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/jiffies.h>
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/slab.h>
  27 #include <linux/string.h>
  28
  29 #include <linux/dvb/frontend.h>
  30 #include "dvb_frontend.h"
  31
  32 #include "stb0899_drv.h"
  33 #include "stb0899_priv.h"
  34 #include "stb0899_reg.h"
  35
  36 /* Max transfer size done by I2C transfer functions */
  37 #define MAX_XFER_SIZE  64
  38
  39 static unsigned int verbose = 0;//1;
  40 module_param(verbose, int, 0644);
  41
  42 /* C/N in dB/10, NIRM/NIRL */
  43 static const struct stb0899_tab stb0899_cn_tab[] = {
  44         { 200,  2600 },
  45         { 190,  2700 },
  46         { 180,  2860 },
  47         { 170,  3020 },
  48         { 160,  3210 },
  49         { 150,  3440 },
  50         { 140,  3710 },
  51         { 130,  4010 },
  52         { 120,  4360 },
  53         { 110,  4740 },
  54         { 100,  5190 },
  55         { 90,   5670 },
  56         { 80,   6200 },
  57         { 70,   6770 },
  58         { 60,   7360 },
  59         { 50,   7970 },
  60         { 40,   8250 },
  61         { 30,   9000 },
  62         { 20,   9450 },
  63         { 15,   9600 },
  64 };
  65
  66 /* DVB-S AGCIQ_VALUE vs. signal level in dBm/10.
  67  * As measured, connected to a modulator.
  68  * -8.0 to -50.0 dBm directly connected,
  69  * -52.0 to -74.8 with extra attenuation.
  70  * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm.
  71  * Crude linear extrapolation below -84.8dBm and above -8.0dBm.
  72  */
  73 static const struct stb0899_tab stb0899_dvbsrf_tab[] = {
  74         { -750, -128 },
  75         { -748,  -94 },
  76         { -745,  -92 },
  77         { -735,  -90 },
  78         { -720,  -87 },
  79         { -670,  -77 },
  80         { -640,  -70 },
  81         { -610,  -62 },
  82         { -600,  -60 },
  83         { -590,  -56 },
  84         { -560,  -41 },
  85         { -540,  -25 },
  86         { -530,  -17 },
  87         { -520,  -11 },
  88         { -500,    1 },
  89         { -490,    6 },
  90         { -480,   10 },
  91         { -440,   22 },
  92         { -420,   27 },
  93         { -400,   31 },
  94         { -380,   34 },
  95         { -340,   40 },
  96         { -320,   43 },
  97         { -280,   48 },
  98         { -250,   52 },
  99         { -230,   55 },
 100         { -180,   61 },
 101         { -140,   66 },
 102         {  -90,   73 },
 103         {  -80,   74 },
 104         {  500,  127 }
 105 };
 106
 107 /* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10.
 108  * As measured, connected to a modulator.
 109  * -8.0 to -50.1 dBm directly connected,
 110  * -53.0 to -76.6 with extra attenuation.
 111  * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm.
 112  * Crude linear extrapolation below -76.6dBm and above -8.0dBm.
 113  */
 114 static const struct stb0899_tab stb0899_dvbs2rf_tab[] = {
 115         {  700,     0 },
 116         {  -80,  3217 },
 117         { -150,  3893 },
 118         { -190,  4217 },
 119         { -240,  4621 },
 120         { -280,  4945 },
 121         { -320,  5273 },
 122         { -350,  5545 },
 123         { -370,  5741 },
 124         { -410,  6147 },
 125         { -450,  6671 },
 126         { -490,  7413 },
 127         { -501,  7665 },
 128         { -530,  8767 },
 129         { -560, 10219 },
 130         { -580, 10939 },
 131         { -590, 11518 },
 132         { -600, 11723 },
 133         { -650, 12659 },
 134         { -690, 13219 },
 135         { -730, 13645 },
 136         { -750, 13909 },
 137         { -766, 14153 },
 138         { -950, 16383 }
 139 };
 140
 141 /* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/
 142 static struct stb0899_tab stb0899_quant_tab[] = {
 143         {    0,     0 },
 144         {    0,   100 },
 145         {  600,   200 },
 146         {  950,   299 },
 147         { 1200,   398 },
 148         { 1400,   501 },
 149         { 1560,   603 },
 150         { 1690,   700 },
 151         { 1810,   804 },
 152         { 1910,   902 },
 153         { 2000,  1000 },
 154         { 2080,  1096 },
 155         { 2160,  1202 },
 156         { 2230,  1303 },
 157         { 2350,  1496 },
 158         { 2410,  1603 },
 159         { 2460,  1698 },
 160         { 2510,  1799 },
 161         { 2600,  1995 },
 162         { 2650,  2113 },
 163         { 2690,  2213 },
 164         { 2720,  2291 },
 165         { 2760,  2399 },
 166         { 2800,  2512 },
 167         { 2860,  2692 },
 168         { 2930,  2917 },
 169         { 2960,  3020 },
 170         { 3010,  3199 },
 171         { 3040,  3311 },
 172         { 3060,  3388 },
 173         { 3120,  3631 },
 174         { 3190,  3936 },
 175         { 3400,  5012 },
 176         { 3610,  6383 },
 177         { 3800,  7943 },
 178         { 4210, 12735 },
 179         { 4500, 17783 },
 180         { 4690, 22131 },
 181         { 4810, 25410 }
 182 };
 183
 184 /* DVB-S2 Es/N0 estimate in dB/100 vs read value */
 185 static struct stb0899_tab stb0899_est_tab[] = {
 186         {    0,      0 },
 187         {    0,      1 },
 188         {  301,      2 },
 189         { 1204,     16 },
 190         { 1806,     64 },
 191         { 2408,    256 },
 192         { 2709,    512 },
 193         { 3010,   1023 },
 194         { 3311,   2046 },
 195         { 3612,   4093 },
 196         { 3823,   6653 },
 197         { 3913,   8185 },
 198         { 4010,  10233 },
 199         { 4107,  12794 },
 200         { 4214,  16368 },
 201         { 4266,  18450 },
 202         { 4311,  20464 },
 203         { 4353,  22542 },
 204         { 4391,  24604 },
 205         { 4425,  26607 },
 206         { 4457,  28642 },
 207         { 4487,  30690 },
 208         { 4515,  32734 },
 209         { 4612,  40926 },
 210         { 4692,  49204 },
 211         { 4816,  65464 },
 212         { 4913,  81846 },
 213         { 4993,  98401 },
 214         { 5060, 114815 },
 215         { 5118, 131220 },
 216         { 5200, 158489 },
 217         { 5300, 199526 },
 218         { 5400, 251189 },
 219         { 5500, 316228 },
 220         { 5600, 398107 },
 221         { 5720, 524807 },
 222         { 5721, 526017 },
 223 };
 224
 225 static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
 226 {
 227         int ret;
 228
 229         u8 b0[] = { reg >> 8, reg & 0xff };
 230         u8 buf;
 231
 232         struct i2c_msg msg[] = {
 233                 {
 234                         .addr   = state->config->demod_address,
 235                         .flags  = 0,
 236                         .buf    = b0,
 237                         .len    = 2
 238                 },{
 239                         .addr   = state->config->demod_address,
 240                         .flags  = I2C_M_RD,
 241                         .buf    = &buf,
 242                         .len    = 1
 243                 }
 244         };
 245
 246         ret = i2c_transfer(state->i2c, msg, 2);
 247         if (ret != 2) {
 248                 if (ret != -ERESTARTSYS)
 249                         dprintk(state->verbose, FE_ERROR, 1,
 250                                 "Read error, Reg=[0x%02x], Status=%d",
 251                                 reg, ret);
 252
 253                 return ret < 0 ? ret : -EREMOTEIO;
 254         }
 255         if (unlikely(*state->verbose >= FE_DEBUGREG))
 256                 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x",
 257                         reg, buf);
 258
 259         return (unsigned int)buf;
 260 }
 261
 262 int stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
 263 {
 264         int result;
 265
 266         result = _stb0899_read_reg(state, reg);
 267         /*
 268          * Bug ID 9:
 269          * access to 0xf2xx/0xf6xx
 270          * must be followed by read from 0xf2ff/0xf6ff.
 271          */
 272         if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
 273             (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
 274                 _stb0899_read_reg(state, (reg | 0x00ff));
 275
 276         return result;
 277 }
 278
 279 u32 _stb0899_read_s2reg(struct stb0899_state *state,
 280                         u32 stb0899_i2cdev,
 281                         u32 stb0899_base_addr,
 282                         u16 stb0899_reg_offset)
 283 {
 284         int status;
 285         u32 data;
 286         u8 buf[7] = { 0 };
 287         u16 tmpaddr;
 288
 289         u8 buf_0[] = {
 290                 GETBYTE(stb0899_i2cdev, BYTE1),         /* 0xf3 S2 Base Address (MSB)   */
 291                 GETBYTE(stb0899_i2cdev, BYTE0),         /* 0xfc S2 Base Address (LSB)   */
 292                 GETBYTE(stb0899_base_addr, BYTE0),      /* 0x00 Base Address (LSB)      */
 293                 GETBYTE(stb0899_base_addr, BYTE1),      /* 0x04 Base Address (LSB)      */
 294                 GETBYTE(stb0899_base_addr, BYTE2),      /* 0x00 Base Address (MSB)      */
 295                 GETBYTE(stb0899_base_addr, BYTE3),      /* 0x00 Base Address (MSB)      */
 296         };
 297         u8 buf_1[] = {
 298                 0x00,   /* 0xf3 Reg Offset      */
 299                 0x00,   /* 0x44 Reg Offset      */
 300         };
 301
 302         struct i2c_msg msg_0 = {
 303                 .addr   = state->config->demod_address,
 304                 .flags  = 0,
 305                 .buf    = buf_0,
 306                 .len    = 6
 307         };
 308
 309         struct i2c_msg msg_1 = {
 310                 .addr   = state->config->demod_address,
 311                 .flags  = 0,
 312                 .buf    = buf_1,
 313                 .len    = 2
 314         };
 315
 316         struct i2c_msg msg_r = {
 317                 .addr   = state->config->demod_address,
 318                 .flags  = I2C_M_RD,
 319                 .buf    = buf,
 320                 .len    = 4
 321         };
 322
 323         tmpaddr = stb0899_reg_offset & 0xff00;
 324         if (!(stb0899_reg_offset & 0x8))
 325                 tmpaddr = stb0899_reg_offset | 0x20;
 326
 327         buf_1[0] = GETBYTE(tmpaddr, BYTE1);
 328         buf_1[1] = GETBYTE(tmpaddr, BYTE0);
 329
 330         status = i2c_transfer(state->i2c, &msg_0, 1);
 331         if (status < 1) {
 332                 if (status != -ERESTARTSYS)
 333                         printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
 334                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
 335
 336                 goto err;
 337         }
 338
 339         /* Dummy        */
 340         status = i2c_transfer(state->i2c, &msg_1, 1);
 341         if (status < 1)
 342                 goto err;
 343
 344         status = i2c_transfer(state->i2c, &msg_r, 1);
 345         if (status < 1)
 346                 goto err;
 347
 348         buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
 349         buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
 350
 351         /* Actual       */
 352         status = i2c_transfer(state->i2c, &msg_1, 1);
 353         if (status < 1) {
 354                 if (status != -ERESTARTSYS)
 355                         printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
 356                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
 357                 goto err;
 358         }
 359
 360         status = i2c_transfer(state->i2c, &msg_r, 1);
 361         if (status < 1) {
 362                 if (status != -ERESTARTSYS)
 363                         printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
 364                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
 365                 return status < 0 ? status : -EREMOTEIO;
 366         }
 367
 368         data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]);
 369         if (unlikely(*state->verbose >= FE_DEBUGREG))
 370                 printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
 371                        __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data);
 372
 373         return data;
 374
 375 err:
 376         return status < 0 ? status : -EREMOTEIO;
 377 }
 378
 379 int stb0899_write_s2reg(struct stb0899_state *state,
 380                         u32 stb0899_i2cdev,
 381                         u32 stb0899_base_addr,
 382                         u16 stb0899_reg_offset,
 383                         u32 stb0899_data)
 384 {
 385         int status;
 386
 387         /* Base Address Setup   */
 388         u8 buf_0[] = {
 389                 GETBYTE(stb0899_i2cdev, BYTE1),         /* 0xf3 S2 Base Address (MSB)   */
 390                 GETBYTE(stb0899_i2cdev, BYTE0),         /* 0xfc S2 Base Address (LSB)   */
 391                 GETBYTE(stb0899_base_addr, BYTE0),      /* 0x00 Base Address (LSB)      */
 392                 GETBYTE(stb0899_base_addr, BYTE1),      /* 0x04 Base Address (LSB)      */
 393                 GETBYTE(stb0899_base_addr, BYTE2),      /* 0x00 Base Address (MSB)      */
 394                 GETBYTE(stb0899_base_addr, BYTE3),      /* 0x00 Base Address (MSB)      */
 395         };
 396         u8 buf_1[] = {
 397                 0x00,   /* 0xf3 Reg Offset      */
 398                 0x00,   /* 0x44 Reg Offset      */
 399                 0x00,   /* data                 */
 400                 0x00,   /* data                 */
 401                 0x00,   /* data                 */
 402                 0x00,   /* data                 */
 403         };
 404
 405         struct i2c_msg msg_0 = {
 406                 .addr   = state->config->demod_address,
 407                 .flags  = 0,
 408                 .buf    = buf_0,
 409                 .len    = 6
 410         };
 411
 412         struct i2c_msg msg_1 = {
 413                 .addr   = state->config->demod_address,
 414                 .flags  = 0,
 415                 .buf    = buf_1,
 416                 .len    = 6
 417         };
 418
 419         buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
 420         buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
 421         buf_1[2] = GETBYTE(stb0899_data, BYTE0);
 422         buf_1[3] = GETBYTE(stb0899_data, BYTE1);
 423         buf_1[4] = GETBYTE(stb0899_data, BYTE2);
 424         buf_1[5] = GETBYTE(stb0899_data, BYTE3);
 425
 426         if (unlikely(*state->verbose >= FE_DEBUGREG))
 427                 printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
 428                        __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data);
 429
 430         status = i2c_transfer(state->i2c, &msg_0, 1);
 431         if (unlikely(status < 1)) {
 432                 if (status != -ERESTARTSYS)
 433                         printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
 434                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
 435                 goto err;
 436         }
 437         status = i2c_transfer(state->i2c, &msg_1, 1);
 438         if (unlikely(status < 1)) {
 439                 if (status != -ERESTARTSYS)
 440                         printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
 441                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
 442
 443                 return status < 0 ? status : -EREMOTEIO;
 444         }
 445
 446         return 0;
 447
 448 err:
 449         return status < 0 ? status : -EREMOTEIO;
 450 }
 451
 452 int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count)
 453 {
 454         int status;
 455
 456         u8 b0[] = { reg >> 8, reg & 0xff };
 457
 458         struct i2c_msg msg[] = {
 459                 {
 460                         .addr   = state->config->demod_address,
 461                         .flags  = 0,
 462                         .buf    = b0,
 463                         .len    = 2
 464                 },{
 465                         .addr   = state->config->demod_address,
 466                         .flags  = I2C_M_RD,
 467                         .buf    = buf,
 468                         .len    = count
 469                 }
 470         };
 471
 472         status = i2c_transfer(state->i2c, msg, 2);
 473         if (status != 2) {
 474                 if (status != -ERESTARTSYS)
 475                         printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n",
 476                                __func__, reg, count, status);
 477                 goto err;
 478         }
 479         /*
 480          * Bug ID 9:
 481          * access to 0xf2xx/0xf6xx
 482          * must be followed by read from 0xf2ff/0xf6ff.
 483          */
 484         if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
 485             (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
 486                 _stb0899_read_reg(state, (reg | 0x00ff));
 487
 488         dprintk(state->verbose, FE_DEBUGREG, 1,
 489                 "%s [0x%04x]: %*ph", __func__, reg, count, buf);
 490
 491         return 0;
 492 err:
 493         return status < 0 ? status : -EREMOTEIO;
 494 }
 495
 496 int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count)
 497 {
 498         int ret;
 499         u8 buf[MAX_XFER_SIZE];
 500         struct i2c_msg i2c_msg = {
 501                 .addr   = state->config->demod_address,
 502                 .flags  = 0,
 503                 .buf    = buf,
 504                 .len    = 2 + count
 505         };
 506
 507         if (2 + count > sizeof(buf)) {
 508                 printk(KERN_WARNING
 509                        "%s: i2c wr reg=%04x: len=%d is too big!\n",
 510                        KBUILD_MODNAME, reg, count);
 511                 return -EINVAL;
 512         }
 513
 514         buf[0] = reg >> 8;
 515         buf[1] = reg & 0xff;
 516         memcpy(&buf[2], data, count);
 517
 518         dprintk(state->verbose, FE_DEBUGREG, 1,
 519                 "%s [0x%04x]: %*ph", __func__, reg, count, data);
 520         ret = i2c_transfer(state->i2c, &i2c_msg, 1);
 521
 522         /*
 523          * Bug ID 9:
 524          * access to 0xf2xx/0xf6xx
 525          * must be followed by read from 0xf2ff/0xf6ff.
 526          */
 527         if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
 528                 stb0899_read_reg(state, (reg | 0x00ff));
 529
 530         if (ret != 1) {
 531                 if (ret != -ERESTARTSYS)
 532                         dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d",
 533                                 reg, data[0], count, ret);
 534                 return ret < 0 ? ret : -EREMOTEIO;
 535         }
 536
 537         return 0;
 538 }
 539
 540 int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data)
 541 {
 542         u8 tmp = data;
 543         return stb0899_write_regs(state, reg, &tmp, 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_detach(struct dvb_frontend *fe)
 606 {
 607         struct stb0899_state *state = fe->demodulator_priv;
 608
 609         /* post process event */
 610         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
 611 }
 612
 613 static void stb0899_release(struct dvb_frontend *fe)
 614 {
 615         struct stb0899_state *state = fe->demodulator_priv;
 616
 617         dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend");
 618         kfree(state);
 619 }
 620
 621 /*
 622  * stb0899_get_alpha
 623  * return: rolloff
 624  */
 625 static int stb0899_get_alpha(struct stb0899_state *state)
 626 {
 627         u8 mode_coeff;
 628
 629         mode_coeff = stb0899_read_reg(state, STB0899_DEMOD);
 630
 631         if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1)
 632                 return 20;
 633         else
 634                 return 35;
 635 }
 636
 637 /*
 638  * stb0899_init_calc
 639  */
 640 static void stb0899_init_calc(struct stb0899_state *state)
 641 {
 642         struct stb0899_internal *internal = &state->internal;
 643         int master_clk;
 644         u8 agc[2];
 645         u32 reg;
 646
 647         /* Read registers (in burst mode)       */
 648         stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O   */
 649
 650         /* Initial calculations */
 651         master_clk                      = stb0899_get_mclk(state);
 652         internal->t_agc1                = 0;
 653         internal->t_agc2                = 0;
 654         internal->master_clk            = master_clk;
 655         internal->mclk                  = master_clk / 65536L;
 656         internal->rolloff               = stb0899_get_alpha(state);
 657
 658         /* DVBS2 Initial calculations   */
 659         /* Set AGC value to the middle  */
 660         internal->agc_gain              = 8154;
 661         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL);
 662         STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain);
 663         stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg);
 664
 665         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA);
 666         internal->rrc_alpha             = STB0899_GETFIELD(RRC_ALPHA, reg);
 667
 668         internal->center_freq           = 0;
 669         internal->av_frame_coarse       = 10;
 670         internal->av_frame_fine         = 20;
 671         internal->step_size             = 2;
 672 /*
 673         if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO))
 674                 pParams->IQLocked = 0;
 675         else
 676                 pParams->IQLocked = 1;
 677 */
 678 }
 679
 680 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout)
 681 {
 682         u8 reg = 0;
 683         unsigned long start = jiffies;
 684
 685         while (1) {
 686                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
 687                 if (!STB0899_GETFIELD(FIFOFULL, reg))
 688                         break;
 689                 if (time_after(jiffies, start + timeout)) {
 690                         dprintk(state->verbose, FE_ERROR, 1, "timed out !!");
 691                         return -ETIMEDOUT;
 692                 }
 693         }
 694
 695         return 0;
 696 }
 697
 698 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
 699 {
 700         struct stb0899_state *state = fe->demodulator_priv;
 701         u8 reg, i;
 702
 703         if (cmd->msg_len > sizeof(cmd->msg))
 704                 return -EINVAL;
 705
 706         /* enable FIFO precharge        */
 707         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 708         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1);
 709         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 710         for (i = 0; i < cmd->msg_len; i++) {
 711                 /* wait for FIFO empty  */
 712                 if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0)
 713                         return -ETIMEDOUT;
 714
 715                 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]);
 716         }
 717         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 718         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);
 719         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 720         msleep(100);
 721         return 0;
 722 }
 723
 724 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout)
 725 {
 726         u8 reg = 0;
 727         unsigned long start = jiffies;
 728
 729         while (!STB0899_GETFIELD(RXEND, reg)) {
 730                 reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
 731                 if (time_after(jiffies, start + timeout)) {
 732                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
 733                         return -ETIMEDOUT;
 734                 }
 735                 msleep(10);
 736         }
 737
 738         return 0;
 739 }
 740
 741 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)
 742 {
 743         struct stb0899_state *state = fe->demodulator_priv;
 744         u8 reg, length = 0, i;
 745         int result;
 746
 747         if (stb0899_wait_diseqc_rxidle(state, 100) < 0)
 748                 return -ETIMEDOUT;
 749
 750         reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
 751         if (STB0899_GETFIELD(RXEND, reg)) {
 752
 753                 reg = stb0899_read_reg(state, STB0899_DISRX_ST1);
 754                 length = STB0899_GETFIELD(FIFOBYTENBR, reg);
 755
 756                 if (length > sizeof (reply->msg)) {
 757                         result = -EOVERFLOW;
 758                         goto exit;
 759                 }
 760                 reply->msg_len = length;
 761
 762                 /* extract data */
 763                 for (i = 0; i < length; i++)
 764                         reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO);
 765         }
 766
 767         return 0;
 768 exit:
 769
 770         return result;
 771 }
 772
 773 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout)
 774 {
 775         u8 reg = 0;
 776         unsigned long start = jiffies;
 777
 778         while (!STB0899_GETFIELD(TXIDLE, reg)) {
 779                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
 780                 if (time_after(jiffies, start + timeout)) {
 781                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
 782                         return -ETIMEDOUT;
 783                 }
 784                 msleep(10);
 785         }
 786         return 0;
 787 }
 788
 789 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe,
 790                                      enum fe_sec_mini_cmd burst)
 791 {
 792         struct stb0899_state *state = fe->demodulator_priv;
 793         u8 reg, old_state;
 794
 795         /* wait for diseqc idle */
 796         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
 797                 return -ETIMEDOUT;
 798
 799         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 800         old_state = reg;
 801         /* set to burst mode    */
 802         STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03);
 803         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01);
 804         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 805         switch (burst) {
 806         case SEC_MINI_A:
 807                 /* unmodulated  */
 808                 stb0899_write_reg(state, STB0899_DISFIFO, 0x00);
 809                 break;
 810         case SEC_MINI_B:
 811                 /* modulated    */
 812                 stb0899_write_reg(state, STB0899_DISFIFO, 0xff);
 813                 break;
 814         }
 815         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 816         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00);
 817         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 818         /* wait for diseqc idle */
 819         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
 820                 return -ETIMEDOUT;
 821
 822         /* restore state        */
 823         stb0899_write_reg(state, STB0899_DISCNTRL1, old_state);
 824
 825         return 0;
 826 }
 827
 828 static int stb0899_diseqc_init(struct stb0899_state *state)
 829 {
 830 /*
 831         struct dvb_diseqc_slave_reply rx_data;
 832 */
 833         u8 f22_tx, reg;
 834
 835         u32 mclk, tx_freq = 22000;/* count = 0, i; */
 836         reg = stb0899_read_reg(state, STB0899_DISCNTRL2);
 837         STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0);
 838         stb0899_write_reg(state, STB0899_DISCNTRL2, reg);
 839
 840         /* disable Tx spy       */
 841         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 842         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1);
 843         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 844
 845         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
 846         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0);
 847         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
 848
 849         mclk = stb0899_get_mclk(state);
 850         f22_tx = mclk / (tx_freq * 32);
 851         stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq     */
 852         state->rx_freq = 20000;
 853
 854         return 0;
 855 }
 856
 857 static int stb0899_sleep(struct dvb_frontend *fe)
 858 {
 859         struct stb0899_state *state = fe->demodulator_priv;
 860 /*
 861         u8 reg;
 862 */
 863         dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))");
 864         /* post process event */
 865         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
 866
 867         return 0;
 868 }
 869
 870 static int stb0899_wakeup(struct dvb_frontend *fe)
 871 {
 872         int rc;
 873         struct stb0899_state *state = fe->demodulator_priv;
 874
 875         if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI)))
 876                 return rc;
 877         /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */
 878         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00)))
 879                 return rc;
 880         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00)))
 881                 return rc;
 882
 883         /* post process event */
 884         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1);
 885
 886         return 0;
 887 }
 888
 889 static int stb0899_init(struct dvb_frontend *fe)
 890 {
 891         int i;
 892         struct stb0899_state *state = fe->demodulator_priv;
 893         struct stb0899_config *config = state->config;
 894
 895         dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... ");
 896
 897         /* init device          */
 898         dprintk(state->verbose, FE_DEBUG, 1, "init device");
 899         for (i = 0; config->init_dev[i].address != 0xffff; i++)
 900                 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data);
 901
 902         dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod");
 903         /* init S2 demod        */
 904         for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++)
 905                 stb0899_write_s2reg(state, STB0899_S2DEMOD,
 906                                     config->init_s2_demod[i].base_address,
 907                                     config->init_s2_demod[i].offset,
 908                                     config->init_s2_demod[i].data);
 909
 910         dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod");
 911         /* init S1 demod        */
 912         for (i = 0; config->init_s1_demod[i].address != 0xffff; i++)
 913                 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data);
 914
 915         dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC");
 916         /* init S2 fec          */
 917         for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++)
 918                 stb0899_write_s2reg(state, STB0899_S2FEC,
 919                                     config->init_s2_fec[i].base_address,
 920                                     config->init_s2_fec[i].offset,
 921                                     config->init_s2_fec[i].data);
 922
 923         dprintk(state->verbose, FE_DEBUG, 1, "init TST");
 924         /* init test            */
 925         for (i = 0; config->init_tst[i].address != 0xffff; i++)
 926                 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data);
 927
 928         stb0899_init_calc(state);
 929         stb0899_diseqc_init(state);
 930
 931         return 0;
 932 }
 933
 934 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val)
 935 {
 936         int res = 0;
 937         int min = 0, med;
 938
 939         if (val < tab[min].read)
 940                 res = tab[min].real;
 941         else if (val >= tab[max].read)
 942                 res = tab[max].real;
 943         else {
 944                 while ((max - min) > 1) {
 945                         med = (max + min) / 2;
 946                         if (val >= tab[min].read && val < tab[med].read)
 947                                 max = med;
 948                         else
 949                                 min = med;
 950                 }
 951                 res = ((val - tab[min].read) *
 952                        (tab[max].real - tab[min].real) /
 953                        (tab[max].read - tab[min].read)) +
 954                         tab[min].real;
 955         }
 956
 957         return res;
 958 }
 959
 960 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 961 {
 962         struct stb0899_state *state             = fe->demodulator_priv;
 963         struct stb0899_internal *internal       = &state->internal;
 964
 965         int val;
 966         u32 reg;
 967         *strength = 0;
 968         switch (state->delsys) {
 969         case SYS_DVBS:
 970         case SYS_DSS:
 971                 if (internal->lock) {
 972                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
 973                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
 974
 975                                 reg = stb0899_read_reg(state, STB0899_AGCIQIN);
 976                                 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg);
 977
 978                                 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val);
 979                                 *strength += 750;
 980                                 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm",
 981                                         val & 0xff, *strength);
 982                         }
 983                 }
 984                 break;
 985         case SYS_DVBS2:
 986                 if (internal->lock) {
 987                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN);
 988                         val = STB0899_GETFIELD(IF_AGC_GAIN, reg);
 989
 990                         *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val);
 991                         *strength += 950;
 992                         dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm",
 993                                 val & 0x3fff, *strength);
 994                 }
 995                 break;
 996         default:
 997                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
 998                 return -EINVAL;
 999         }
1000
1001         return 0;
1002 }
1003
1004 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr)
1005 {
1006         struct stb0899_state *state             = fe->demodulator_priv;
1007         struct stb0899_internal *internal       = &state->internal;
1008
1009         unsigned int val, quant, quantn = -1, est, estn = -1;
1010         u8 buf[2];
1011         u32 reg;
1012
1013         *snr = 0;
1014         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1015         switch (state->delsys) {
1016         case SYS_DVBS:
1017         case SYS_DSS:
1018                 if (internal->lock) {
1019                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1020
1021                                 stb0899_read_regs(state, STB0899_NIRM, buf, 2);
1022                                 val = MAKEWORD16(buf[0], buf[1]);
1023
1024                                 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val);
1025                                 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n",
1026                                         buf[0], buf[1], val, *snr);
1027                         }
1028                 }
1029                 break;
1030         case SYS_DVBS2:
1031                 if (internal->lock) {
1032                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1);
1033                         quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg);
1034                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2);
1035                         est = STB0899_GETFIELD(ESN0_EST, reg);
1036                         if (est == 1)
1037                                 val = 301; /* C/N = 30.1 dB */
1038                         else if (est == 2)
1039                                 val = 270; /* C/N = 27.0 dB */
1040                         else {
1041                                 /* quantn = 100 * log(quant^2) */
1042                                 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100);
1043                                 /* estn = 100 * log(est) */
1044                                 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est);
1045                                 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */
1046                                 val = (quantn - estn) / 10;
1047                         }
1048                         *snr = val;
1049                         dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm",
1050                                 quant, quantn, est, estn, val);
1051                 }
1052                 break;
1053         default:
1054                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1055                 return -EINVAL;
1056         }
1057
1058         return 0;
1059 }
1060
1061 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status)
1062 {
1063         struct stb0899_state *state             = fe->demodulator_priv;
1064         struct stb0899_internal *internal       = &state->internal;
1065         u8 reg;
1066         *status = 0;
1067
1068         switch (state->delsys) {
1069         case SYS_DVBS:
1070         case SYS_DSS:
1071                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS");
1072                 if (internal->lock) {
1073                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1074                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1075                                 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK");
1076                                 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
1077
1078                                 reg = stb0899_read_reg(state, STB0899_PLPARM);
1079                                 if (STB0899_GETFIELD(VITCURPUN, reg)) {
1080                                         dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC");
1081                                         *status |= FE_HAS_VITERBI | FE_HAS_SYNC;
1082                                         /* post process event */
1083                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1084                                 }
1085                         }
1086                 }
1087                 break;
1088         case SYS_DVBS2:
1089                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2");
1090                 if (internal->lock) {
1091                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2);
1092                         if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) {
1093                                 *status |= FE_HAS_CARRIER;
1094                                 dprintk(state->verbose, FE_DEBUG, 1,
1095                                         "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER");
1096
1097                                 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1);
1098                                 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) {
1099                                         *status |= FE_HAS_LOCK;
1100                                         dprintk(state->verbose, FE_DEBUG, 1,
1101                                                 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK");
1102
1103                                 }
1104                                 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) {
1105                                         *status |= FE_HAS_VITERBI;
1106                                         dprintk(state->verbose, FE_DEBUG, 1,
1107                                                 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI");
1108                                 }
1109                                 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) {
1110                                         *status |= FE_HAS_SYNC;
1111                                         dprintk(state->verbose, FE_DEBUG, 1,
1112                                                 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC");
1113                                         /* post process event */
1114                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1115                                 }
1116                         }
1117                 }
1118                 break;
1119         default:
1120                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1121                 return -EINVAL;
1122         }
1123         return 0;
1124 }
1125
1126 /*
1127  * stb0899_get_error
1128  * viterbi error for DVB-S/DSS
1129  * packet error for DVB-S2
1130  * Bit Error Rate or Packet Error Rate * 10 ^ 7
1131  */
1132 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber)
1133 {
1134         struct stb0899_state *state             = fe->demodulator_priv;
1135         struct stb0899_internal *internal       = &state->internal;
1136
1137         u8  lsb, msb;
1138
1139         *ber = 0;
1140
1141         switch (state->delsys) {
1142         case SYS_DVBS:
1143         case SYS_DSS:
1144                 if (internal->lock) {
1145                         lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1146                         msb = stb0899_read_reg(state, STB0899_ECNT1M);
1147                         *ber = MAKEWORD16(msb, lsb);
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                         lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1161                         msb = stb0899_read_reg(state, STB0899_ECNT1M);
1162                         *ber = MAKEWORD16(msb, lsb);
1163                         /* ber = ber * 10 ^ 7   */
1164                         *ber *= 10000000;
1165                         *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1166                 }
1167                 break;
1168         default:
1169                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1170                 return -EINVAL;
1171         }
1172
1173         return 0;
1174 }
1175
1176 static int stb0899_set_voltage(struct dvb_frontend *fe,
1177                                enum fe_sec_voltage voltage)
1178 {
1179         struct stb0899_state *state = fe->demodulator_priv;
1180
1181         switch (voltage) {
1182         case SEC_VOLTAGE_13:
1183                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1184                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1185                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00);
1186                 break;
1187         case SEC_VOLTAGE_18:
1188                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02);
1189                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1190                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1191                 break;
1192         case SEC_VOLTAGE_OFF:
1193                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1194                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82);
1195                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1196                 break;
1197         default:
1198                 return -EINVAL;
1199         }
1200
1201         return 0;
1202 }
1203
1204 static int stb0899_set_tone(struct dvb_frontend *fe, enum fe_sec_tone_mode tone)
1205 {
1206         struct stb0899_state *state = fe->demodulator_priv;
1207         struct stb0899_internal *internal = &state->internal;
1208
1209         u8 div, reg;
1210
1211         /* wait for diseqc idle */
1212         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
1213                 return -ETIMEDOUT;
1214
1215         switch (tone) {
1216         case SEC_TONE_ON:
1217                 div = (internal->master_clk / 100) / 5632;
1218                 div = (div + 5) / 10;
1219                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66);
1220                 reg = stb0899_read_reg(state, STB0899_ACRPRESC);
1221                 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03);
1222                 stb0899_write_reg(state, STB0899_ACRPRESC, reg);
1223                 stb0899_write_reg(state, STB0899_ACRDIV1, div);
1224                 break;
1225         case SEC_TONE_OFF:
1226                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20);
1227                 break;
1228         default:
1229                 return -EINVAL;
1230         }
1231         return 0;
1232 }
1233
1234 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
1235 {
1236         int i2c_stat;
1237         struct stb0899_state *state = fe->demodulator_priv;
1238
1239         i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT);
1240         if (i2c_stat < 0)
1241                 goto err;
1242
1243         if (enable) {
1244                 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ...");
1245                 i2c_stat |=  STB0899_I2CTON;
1246                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1247                         goto err;
1248         } else {
1249                 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ...");
1250                 i2c_stat &= ~STB0899_I2CTON;
1251                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1252                         goto err;
1253         }
1254         return 0;
1255 err:
1256         dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed");
1257         return -EREMOTEIO;
1258 }
1259
1260
1261 static inline void CONVERT32(u32 x, char *str)
1262 {
1263         *str++  = (x >> 24) & 0xff;
1264         *str++  = (x >> 16) & 0xff;
1265         *str++  = (x >>  8) & 0xff;
1266         *str++  = (x >>  0) & 0xff;
1267         *str    = '\0';
1268 }
1269
1270 static int stb0899_get_dev_id(struct stb0899_state *state)
1271 {
1272         u8 chip_id, release;
1273         u16 id;
1274         u32 demod_ver = 0, fec_ver = 0;
1275         char demod_str[5] = { 0 };
1276         char fec_str[5] = { 0 };
1277
1278         id = stb0899_read_reg(state, STB0899_DEV_ID);
1279         dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id);
1280         chip_id = STB0899_GETFIELD(CHIP_ID, id);
1281         release = STB0899_GETFIELD(CHIP_REL, id);
1282
1283         dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]",
1284                 chip_id, release);
1285
1286         CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str);
1287
1288         demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID);
1289         dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);
1290         CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);
1291         fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);
1292         if (! (chip_id > 0)) {
1293                 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");
1294
1295                 return -ENODEV;
1296         }
1297         dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver);
1298
1299         return 0;
1300 }
1301
1302 static void stb0899_set_delivery(struct stb0899_state *state)
1303 {
1304         u8 reg;
1305         u8 stop_clk[2];
1306
1307         stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1);
1308         stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2);
1309
1310         switch (state->delsys) {
1311         case SYS_DVBS:
1312                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S");
1313                 /* FECM/Viterbi ON      */
1314                 reg = stb0899_read_reg(state, STB0899_FECM);
1315                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1316                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1317                 stb0899_write_reg(state, STB0899_FECM, reg);
1318
1319                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1320                 stb0899_write_reg(state, STB0899_TSULC, 0x40);
1321                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1322                 stb0899_write_reg(state, STB0899_TSLPL, 0x12);
1323
1324                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1325                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1326                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1327
1328                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1329                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1330                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1331
1332                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1333                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1334
1335                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1);
1336                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1337
1338                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1339                 break;
1340         case SYS_DVBS2:
1341                 /* FECM/Viterbi OFF     */
1342                 reg = stb0899_read_reg(state, STB0899_FECM);
1343                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1344                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0);
1345                 stb0899_write_reg(state, STB0899_FECM, reg);
1346
1347                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1348                 stb0899_write_reg(state, STB0899_TSULC, 0x42);
1349                 stb0899_write_reg(state, STB0899_RSLLC, 0x40);
1350                 stb0899_write_reg(state, STB0899_TSLPL, 0x02);
1351
1352                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1353                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0);
1354                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1355
1356                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1357                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0);
1358                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0);
1359
1360                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0);
1361                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0);
1362
1363                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0);
1364                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1365
1366                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0);
1367                 break;
1368         case SYS_DSS:
1369                 /* FECM/Viterbi ON      */
1370                 reg = stb0899_read_reg(state, STB0899_FECM);
1371                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1);
1372                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1373                 stb0899_write_reg(state, STB0899_FECM, reg);
1374
1375                 stb0899_write_reg(state, STB0899_RSULC, 0xa1);
1376                 stb0899_write_reg(state, STB0899_TSULC, 0x61);
1377                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1378
1379                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1380                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1381                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1382
1383                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1384                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1385                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1386
1387                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1388                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1389
1390                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1391
1392                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1393                 break;
1394         default:
1395                 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1396                 break;
1397         }
1398         STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0);
1399         stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2);
1400 }
1401
1402 /*
1403  * stb0899_set_iterations
1404  * set the LDPC iteration scale function
1405  */
1406 static void stb0899_set_iterations(struct stb0899_state *state)
1407 {
1408         struct stb0899_internal *internal = &state->internal;
1409         struct stb0899_config *config = state->config;
1410
1411         s32 iter_scale;
1412         u32 reg;
1413
1414         iter_scale = 17 * (internal->master_clk / 1000);
1415         iter_scale += 410000;
1416         iter_scale /= (internal->srate / 1000000);
1417         iter_scale /= 1000;
1418
1419         if (iter_scale > config->ldpc_max_iter)
1420                 iter_scale = config->ldpc_max_iter;
1421
1422         reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER);
1423         STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
1424         stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
1425 }
1426
1427 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe)
1428 {
1429         struct stb0899_state *state = fe->demodulator_priv;
1430         struct stb0899_params *i_params = &state->params;
1431         struct stb0899_internal *internal = &state->internal;
1432         struct stb0899_config *config = state->config;
1433         struct dtv_frontend_properties *props = &fe->dtv_property_cache;
1434
1435         u32 SearchRange, gain;
1436
1437         i_params->freq  = props->frequency;
1438         i_params->srate = props->symbol_rate;
1439         state->delsys = props->delivery_system;
1440         dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys);
1441
1442         SearchRange = 10000000;
1443         dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate);
1444         /* checking Search Range is meaningless for a fixed 3 Mhz                       */
1445         if (INRANGE(i_params->srate, 1000000, 45000000)) {
1446                 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE");
1447                 stb0899_set_delivery(state);
1448
1449                 if (state->config->tuner_set_rfsiggain) {
1450                         if (internal->srate > 15000000)
1451                                 gain =  8; /* 15Mb < srate < 45Mb, gain = 8dB   */
1452                         else if (internal->srate > 5000000)
1453                                 gain = 12; /*  5Mb < srate < 15Mb, gain = 12dB  */
1454                         else
1455                                 gain = 14; /*  1Mb < srate <  5Mb, gain = 14db  */
1456                         state->config->tuner_set_rfsiggain(fe, gain);
1457                 }
1458
1459                 if (i_params->srate <= 5000000)
1460                         stb0899_set_mclk(state, config->lo_clk);
1461                 else
1462                         stb0899_set_mclk(state, config->hi_clk);
1463
1464                 switch (state->delsys) {
1465                 case SYS_DVBS:
1466                 case SYS_DSS:
1467                         dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system");
1468                         internal->freq  = i_params->freq;
1469                         internal->srate = i_params->srate;
1470                         /*
1471                          * search = user search range +
1472                          *          500Khz +
1473                          *          2 * Tuner_step_size +
1474                          *          10% of the symbol rate
1475                          */
1476                         internal->srch_range    = SearchRange + 1500000 + (i_params->srate / 5);
1477                         internal->derot_percent = 30;
1478
1479                         /* What to do for tuners having no bandwidth setup ?    */
1480                         /* enable tuner I/O */
1481                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1482
1483                         if (state->config->tuner_set_bandwidth)
1484                                 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10);
1485                         if (state->config->tuner_get_bandwidth)
1486                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1487
1488                         /* disable tuner I/O */
1489                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1490
1491                         /* Set DVB-S1 AGC               */
1492                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11);
1493
1494                         /* Run the search algorithm     */
1495                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo ..");
1496                         if (stb0899_dvbs_algo(state)    == RANGEOK) {
1497                                 internal->lock          = 1;
1498                                 dprintk(state->verbose, FE_DEBUG, 1,
1499                                         "-------------------------------------> DVB-S LOCK !");
1500
1501 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors     */
1502 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1503 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1504 //                              dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status);
1505 //                              dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl);
1506
1507                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1508                         } else {
1509                                 internal->lock          = 0;
1510
1511                                 return DVBFE_ALGO_SEARCH_FAILED;
1512                         }
1513                         break;
1514                 case SYS_DVBS2:
1515                         internal->freq                  = i_params->freq;
1516                         internal->srate                 = i_params->srate;
1517                         internal->srch_range            = SearchRange;
1518
1519                         /* enable tuner I/O */
1520                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1521
1522                         if (state->config->tuner_set_bandwidth)
1523                                 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange));
1524                         if (state->config->tuner_get_bandwidth)
1525                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1526
1527                         /* disable tuner I/O */
1528                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1529
1530 //                      pParams->SpectralInv            = pSearch->IQ_Inversion;
1531
1532                         /* Set DVB-S2 AGC               */
1533                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c);
1534
1535                         /* Set IterScale =f(MCLK,SYMB)  */
1536                         stb0899_set_iterations(state);
1537
1538                         /* Run the search algorithm     */
1539                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo ..");
1540                         if (stb0899_dvbs2_algo(state)   == DVBS2_FEC_LOCK) {
1541                                 internal->lock          = 1;
1542                                 dprintk(state->verbose, FE_DEBUG, 1,
1543                                         "-------------------------------------> DVB-S2 LOCK !");
1544
1545 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors      */
1546 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1547 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1548
1549                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1550                         } else {
1551                                 internal->lock          = 0;
1552
1553                                 return DVBFE_ALGO_SEARCH_FAILED;
1554                         }
1555                         break;
1556                 default:
1557                         dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1558                         return DVBFE_ALGO_SEARCH_INVALID;
1559                 }
1560         }
1561
1562         return DVBFE_ALGO_SEARCH_ERROR;
1563 }
1564
1565 static int stb0899_get_frontend(struct dvb_frontend *fe,
1566                                 struct dtv_frontend_properties *p)
1567 {
1568         struct stb0899_state *state             = fe->demodulator_priv;
1569         struct stb0899_internal *internal       = &state->internal;
1570
1571         dprintk(state->verbose, FE_DEBUG, 1, "Get params");
1572         p->symbol_rate = internal->srate;
1573         p->frequency = internal->freq;
1574
1575         return 0;
1576 }
1577
1578 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe)
1579 {
1580         return DVBFE_ALGO_CUSTOM;
1581 }
1582
1583 static const struct dvb_frontend_ops stb0899_ops = {
1584         .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS },
1585         .info = {
1586                 .name                   = "STB0899 Multistandard",
1587                 .frequency_min          = 950000,
1588                 .frequency_max          = 2150000,
1589                 .frequency_stepsize     = 0,
1590                 .frequency_tolerance    = 0,
1591                 .symbol_rate_min        =  5000000,
1592                 .symbol_rate_max        = 45000000,
1593
1594                 .caps                   = FE_CAN_INVERSION_AUTO |
1595                                           FE_CAN_FEC_AUTO       |
1596                                           FE_CAN_2G_MODULATION  |
1597                                           FE_CAN_QPSK
1598         },
1599
1600         .detach                         = stb0899_detach,
1601         .release                        = stb0899_release,
1602         .init                           = stb0899_init,
1603         .sleep                          = stb0899_sleep,
1604 //      .wakeup                         = stb0899_wakeup,
1605
1606         .i2c_gate_ctrl                  = stb0899_i2c_gate_ctrl,
1607
1608         .get_frontend_algo              = stb0899_frontend_algo,
1609         .search                         = stb0899_search,
1610         .get_frontend                   = stb0899_get_frontend,
1611
1612
1613         .read_status                    = stb0899_read_status,
1614         .read_snr                       = stb0899_read_snr,
1615         .read_signal_strength           = stb0899_read_signal_strength,
1616         .read_ber                       = stb0899_read_ber,
1617
1618         .set_voltage                    = stb0899_set_voltage,
1619         .set_tone                       = stb0899_set_tone,
1620
1621         .diseqc_send_master_cmd         = stb0899_send_diseqc_msg,
1622         .diseqc_recv_slave_reply        = stb0899_recv_slave_reply,
1623         .diseqc_send_burst              = stb0899_send_diseqc_burst,
1624 };
1625
1626 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c)
1627 {
1628         struct stb0899_state *state = NULL;
1629
1630         state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);
1631         if (state == NULL)
1632                 goto error;
1633
1634         state->verbose                          = &verbose;
1635         state->config                           = config;
1636         state->i2c                              = i2c;
1637         state->frontend.ops                     = stb0899_ops;
1638         state->frontend.demodulator_priv        = state;
1639         /* use configured inversion as default -- we'll later autodetect inversion */
1640         state->internal.inversion               = config->inversion;
1641
1642         stb0899_wakeup(&state->frontend);
1643         if (stb0899_get_dev_id(state) == -ENODEV) {
1644                 printk("%s: Exiting .. !\n", __func__);
1645                 goto error;
1646         }
1647
1648         printk("%s: Attaching STB0899 \n", __func__);
1649         return &state->frontend;
1650
1651 error:
1652         kfree(state);
1653         return NULL;
1654 }
1655 EXPORT_SYMBOL(stb0899_attach);
1656 MODULE_PARM_DESC(verbose, "Set Verbosity level");
1657 MODULE_AUTHOR("Manu Abraham");
1658 MODULE_DESCRIPTION("STB0899 Multi-Std frontend");
1659 MODULE_LICENSE("GPL");