drivers/media/tuners/fc0013.c

   1 /*
   2  * Fitipower FC0013 tuner driver
   3  *
   4  * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net>
   5  * partially based on driver code from Fitipower
   6  * Copyright (C) 2010 Fitipower Integrated Technology Inc
   7  *
   8  *    This program is free software; you can redistribute it and/or modify
   9  *    it under the terms of the GNU General Public License as published by
  10  *    the Free Software Foundation; either version 2 of the License, or
  11  *    (at your option) any later version.
  12  *
  13  *    This program is distributed in the hope that it will be useful,
  14  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *    GNU General Public License for more details.
  17  *
  18  */
  19
  20 #include "fc0013.h"
  21 #include "fc0013-priv.h"
  22
  23 static int fc0013_writereg(struct fc0013_priv *priv, u8 reg, u8 val)
  24 {
  25         u8 buf[2] = {reg, val};
  26         struct i2c_msg msg = {
  27                 .addr = priv->addr, .flags = 0, .buf = buf, .len = 2
  28         };
  29
  30         if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
  31                 err("I2C write reg failed, reg: %02x, val: %02x", reg, val);
  32                 return -EREMOTEIO;
  33         }
  34         return 0;
  35 }
  36
  37 static int fc0013_readreg(struct fc0013_priv *priv, u8 reg, u8 *val)
  38 {
  39         struct i2c_msg msg[2] = {
  40                 { .addr = priv->addr, .flags = 0, .buf = &reg, .len = 1 },
  41                 { .addr = priv->addr, .flags = I2C_M_RD, .buf = val, .len = 1 },
  42         };
  43
  44         if (i2c_transfer(priv->i2c, msg, 2) != 2) {
  45                 err("I2C read reg failed, reg: %02x", reg);
  46                 return -EREMOTEIO;
  47         }
  48         return 0;
  49 }
  50
  51 static void fc0013_release(struct dvb_frontend *fe)
  52 {
  53         kfree(fe->tuner_priv);
  54         fe->tuner_priv = NULL;
  55 }
  56
  57 static int fc0013_init(struct dvb_frontend *fe)
  58 {
  59         struct fc0013_priv *priv = fe->tuner_priv;
  60         int i, ret = 0;
  61         unsigned char reg[] = {
  62                 0x00,   /* reg. 0x00: dummy */
  63                 0x09,   /* reg. 0x01 */
  64                 0x16,   /* reg. 0x02 */
  65                 0x00,   /* reg. 0x03 */
  66                 0x00,   /* reg. 0x04 */
  67                 0x17,   /* reg. 0x05 */
  68                 0x02,   /* reg. 0x06 */
  69                 0x0a,   /* reg. 0x07: CHECK */
  70                 0xff,   /* reg. 0x08: AGC Clock divide by 256, AGC gain 1/256,
  71                            Loop Bw 1/8 */
  72                 0x6f,   /* reg. 0x09: enable LoopThrough */
  73                 0xb8,   /* reg. 0x0a: Disable LO Test Buffer */
  74                 0x82,   /* reg. 0x0b: CHECK */
  75                 0xfc,   /* reg. 0x0c: depending on AGC Up-Down mode, may need 0xf8 */
  76                 0x01,   /* reg. 0x0d: AGC Not Forcing & LNA Forcing, may need 0x02 */
  77                 0x00,   /* reg. 0x0e */
  78                 0x00,   /* reg. 0x0f */
  79                 0x00,   /* reg. 0x10 */
  80                 0x00,   /* reg. 0x11 */
  81                 0x00,   /* reg. 0x12 */
  82                 0x00,   /* reg. 0x13 */
  83                 0x50,   /* reg. 0x14: DVB-t High Gain, UHF.
  84                            Middle Gain: 0x48, Low Gain: 0x40 */
  85                 0x01,   /* reg. 0x15 */
  86         };
  87
  88         switch (priv->xtal_freq) {
  89         case FC_XTAL_27_MHZ:
  90         case FC_XTAL_28_8_MHZ:
  91                 reg[0x07] |= 0x20;
  92                 break;
  93         case FC_XTAL_36_MHZ:
  94         default:
  95                 break;
  96         }
  97
  98         if (priv->dual_master)
  99                 reg[0x0c] |= 0x02;
 100
 101         if (fe->ops.i2c_gate_ctrl)
 102                 fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
 103
 104         for (i = 1; i < sizeof(reg); i++) {
 105                 ret = fc0013_writereg(priv, i, reg[i]);
 106                 if (ret)
 107                         break;
 108         }
 109
 110         if (fe->ops.i2c_gate_ctrl)
 111                 fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
 112
 113         if (ret)
 114                 err("fc0013_writereg failed: %d", ret);
 115
 116         return ret;
 117 }
 118
 119 static int fc0013_sleep(struct dvb_frontend *fe)
 120 {
 121         /* nothing to do here */
 122         return 0;
 123 }
 124
 125 int fc0013_rc_cal_add(struct dvb_frontend *fe, int rc_val)
 126 {
 127         struct fc0013_priv *priv = fe->tuner_priv;
 128         int ret;
 129         u8 rc_cal;
 130         int val;
 131
 132         if (fe->ops.i2c_gate_ctrl)
 133                 fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
 134
 135         /* push rc_cal value, get rc_cal value */
 136         ret = fc0013_writereg(priv, 0x10, 0x00);
 137         if (ret)
 138                 goto error_out;
 139
 140         /* get rc_cal value */
 141         ret = fc0013_readreg(priv, 0x10, &rc_cal);
 142         if (ret)
 143                 goto error_out;
 144
 145         rc_cal &= 0x0f;
 146
 147         val = (int)rc_cal + rc_val;
 148
 149         /* forcing rc_cal */
 150         ret = fc0013_writereg(priv, 0x0d, 0x11);
 151         if (ret)
 152                 goto error_out;
 153
 154         /* modify rc_cal value */
 155         if (val > 15)
 156                 ret = fc0013_writereg(priv, 0x10, 0x0f);
 157         else if (val < 0)
 158                 ret = fc0013_writereg(priv, 0x10, 0x00);
 159         else
 160                 ret = fc0013_writereg(priv, 0x10, (u8)val);
 161
 162 error_out:
 163         if (fe->ops.i2c_gate_ctrl)
 164                 fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
 165
 166         return ret;
 167 }
 168 EXPORT_SYMBOL(fc0013_rc_cal_add);
 169
 170 int fc0013_rc_cal_reset(struct dvb_frontend *fe)
 171 {
 172         struct fc0013_priv *priv = fe->tuner_priv;
 173         int ret;
 174
 175         if (fe->ops.i2c_gate_ctrl)
 176                 fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
 177
 178         ret = fc0013_writereg(priv, 0x0d, 0x01);
 179         if (!ret)
 180                 ret = fc0013_writereg(priv, 0x10, 0x00);
 181
 182         if (fe->ops.i2c_gate_ctrl)
 183                 fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
 184
 185         return ret;
 186 }
 187 EXPORT_SYMBOL(fc0013_rc_cal_reset);
 188
 189 static int fc0013_set_vhf_track(struct fc0013_priv *priv, u32 freq)
 190 {
 191         int ret;
 192         u8 tmp;
 193
 194         ret = fc0013_readreg(priv, 0x1d, &tmp);
 195         if (ret)
 196                 goto error_out;
 197         tmp &= 0xe3;
 198         if (freq <= 177500) {           /* VHF Track: 7 */
 199                 ret = fc0013_writereg(priv, 0x1d, tmp | 0x1c);
 200         } else if (freq <= 184500) {    /* VHF Track: 6 */
 201                 ret = fc0013_writereg(priv, 0x1d, tmp | 0x18);
 202         } else if (freq <= 191500) {    /* VHF Track: 5 */
 203                 ret = fc0013_writereg(priv, 0x1d, tmp | 0x14);
 204         } else if (freq <= 198500) {    /* VHF Track: 4 */
 205                 ret = fc0013_writereg(priv, 0x1d, tmp | 0x10);
 206         } else if (freq <= 205500) {    /* VHF Track: 3 */
 207                 ret = fc0013_writereg(priv, 0x1d, tmp | 0x0c);
 208         } else if (freq <= 219500) {    /* VHF Track: 2 */
 209                 ret = fc0013_writereg(priv, 0x1d, tmp | 0x08);
 210         } else if (freq < 300000) {     /* VHF Track: 1 */
 211                 ret = fc0013_writereg(priv, 0x1d, tmp | 0x04);
 212         } else {                        /* UHF and GPS */
 213                 ret = fc0013_writereg(priv, 0x1d, tmp | 0x1c);
 214         }
 215 error_out:
 216         return ret;
 217 }
 218
 219 static int fc0013_set_params(struct dvb_frontend *fe)
 220 {
 221         struct fc0013_priv *priv = fe->tuner_priv;
 222         int i, ret = 0;
 223         struct dtv_frontend_properties *p = &fe->dtv_property_cache;
 224         u32 freq = p->frequency / 1000;
 225         u32 delsys = p->delivery_system;
 226         unsigned char reg[7], am, pm, multi, tmp;
 227         unsigned long f_vco;
 228         unsigned short xtal_freq_khz_2, xin, xdiv;
 229         bool vco_select = false;
 230
 231         if (fe->callback) {
 232                 ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
 233                         FC_FE_CALLBACK_VHF_ENABLE, (freq > 300000 ? 0 : 1));
 234                 if (ret)
 235                         goto exit;
 236         }
 237
 238         switch (priv->xtal_freq) {
 239         case FC_XTAL_27_MHZ:
 240                 xtal_freq_khz_2 = 27000 / 2;
 241                 break;
 242         case FC_XTAL_36_MHZ:
 243                 xtal_freq_khz_2 = 36000 / 2;
 244                 break;
 245         case FC_XTAL_28_8_MHZ:
 246         default:
 247                 xtal_freq_khz_2 = 28800 / 2;
 248                 break;
 249         }
 250
 251         if (fe->ops.i2c_gate_ctrl)
 252                 fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
 253
 254         /* set VHF track */
 255         ret = fc0013_set_vhf_track(priv, freq);
 256         if (ret)
 257                 goto exit;
 258
 259         if (freq < 300000) {
 260                 /* enable VHF filter */
 261                 ret = fc0013_readreg(priv, 0x07, &tmp);
 262                 if (ret)
 263                         goto exit;
 264                 ret = fc0013_writereg(priv, 0x07, tmp | 0x10);
 265                 if (ret)
 266                         goto exit;
 267
 268                 /* disable UHF & disable GPS */
 269                 ret = fc0013_readreg(priv, 0x14, &tmp);
 270                 if (ret)
 271                         goto exit;
 272                 ret = fc0013_writereg(priv, 0x14, tmp & 0x1f);
 273                 if (ret)
 274                         goto exit;
 275         } else if (freq <= 862000) {
 276                 /* disable VHF filter */
 277                 ret = fc0013_readreg(priv, 0x07, &tmp);
 278                 if (ret)
 279                         goto exit;
 280                 ret = fc0013_writereg(priv, 0x07, tmp & 0xef);
 281                 if (ret)
 282                         goto exit;
 283
 284                 /* enable UHF & disable GPS */
 285                 ret = fc0013_readreg(priv, 0x14, &tmp);
 286                 if (ret)
 287                         goto exit;
 288                 ret = fc0013_writereg(priv, 0x14, (tmp & 0x1f) | 0x40);
 289                 if (ret)
 290                         goto exit;
 291         } else {
 292                 /* disable VHF filter */
 293                 ret = fc0013_readreg(priv, 0x07, &tmp);
 294                 if (ret)
 295                         goto exit;
 296                 ret = fc0013_writereg(priv, 0x07, tmp & 0xef);
 297                 if (ret)
 298                         goto exit;
 299
 300                 /* disable UHF & enable GPS */
 301                 ret = fc0013_readreg(priv, 0x14, &tmp);
 302                 if (ret)
 303                         goto exit;
 304                 ret = fc0013_writereg(priv, 0x14, (tmp & 0x1f) | 0x20);
 305                 if (ret)
 306                         goto exit;
 307         }
 308
 309         /* select frequency divider and the frequency of VCO */
 310         if (freq < 37084) {             /* freq * 96 < 3560000 */
 311                 multi = 96;
 312                 reg[5] = 0x82;
 313                 reg[6] = 0x00;
 314         } else if (freq < 55625) {      /* freq * 64 < 3560000 */
 315                 multi = 64;
 316                 reg[5] = 0x02;
 317                 reg[6] = 0x02;
 318         } else if (freq < 74167) {      /* freq * 48 < 3560000 */
 319                 multi = 48;
 320                 reg[5] = 0x42;
 321                 reg[6] = 0x00;
 322         } else if (freq < 111250) {     /* freq * 32 < 3560000 */
 323                 multi = 32;
 324                 reg[5] = 0x82;
 325                 reg[6] = 0x02;
 326         } else if (freq < 148334) {     /* freq * 24 < 3560000 */
 327                 multi = 24;
 328                 reg[5] = 0x22;
 329                 reg[6] = 0x00;
 330         } else if (freq < 222500) {     /* freq * 16 < 3560000 */
 331                 multi = 16;
 332                 reg[5] = 0x42;
 333                 reg[6] = 0x02;
 334         } else if (freq < 296667) {     /* freq * 12 < 3560000 */
 335                 multi = 12;
 336                 reg[5] = 0x12;
 337                 reg[6] = 0x00;
 338         } else if (freq < 445000) {     /* freq * 8 < 3560000 */
 339                 multi = 8;
 340                 reg[5] = 0x22;
 341                 reg[6] = 0x02;
 342         } else if (freq < 593334) {     /* freq * 6 < 3560000 */
 343                 multi = 6;
 344                 reg[5] = 0x0a;
 345                 reg[6] = 0x00;
 346         } else if (freq < 950000) {     /* freq * 4 < 3800000 */
 347                 multi = 4;
 348                 reg[5] = 0x12;
 349                 reg[6] = 0x02;
 350         } else {
 351                 multi = 2;
 352                 reg[5] = 0x0a;
 353                 reg[6] = 0x02;
 354         }
 355
 356         f_vco = freq * multi;
 357
 358         if (f_vco >= 3060000) {
 359                 reg[6] |= 0x08;
 360                 vco_select = true;
 361         }
 362
 363         if (freq >= 45000) {
 364                 /* From divided value (XDIV) determined the FA and FP value */
 365                 xdiv = (unsigned short)(f_vco / xtal_freq_khz_2);
 366                 if ((f_vco - xdiv * xtal_freq_khz_2) >= (xtal_freq_khz_2 / 2))
 367                         xdiv++;
 368
 369                 pm = (unsigned char)(xdiv / 8);
 370                 am = (unsigned char)(xdiv - (8 * pm));
 371
 372                 if (am < 2) {
 373                         reg[1] = am + 8;
 374                         reg[2] = pm - 1;
 375                 } else {
 376                         reg[1] = am;
 377                         reg[2] = pm;
 378                 }
 379         } else {
 380                 /* fix for frequency less than 45 MHz */
 381                 reg[1] = 0x06;
 382                 reg[2] = 0x11;
 383         }
 384
 385         /* fix clock out */
 386         reg[6] |= 0x20;
 387
 388         /* From VCO frequency determines the XIN ( fractional part of Delta
 389            Sigma PLL) and divided value (XDIV) */
 390         xin = (unsigned short)(f_vco - (f_vco / xtal_freq_khz_2) * xtal_freq_khz_2);
 391         xin = (xin << 15) / xtal_freq_khz_2;
 392         if (xin >= 16384)
 393                 xin += 32768;
 394
 395         reg[3] = xin >> 8;
 396         reg[4] = xin & 0xff;
 397
 398         if (delsys == SYS_DVBT) {
 399                 reg[6] &= 0x3f; /* bits 6 and 7 describe the bandwidth */
 400                 switch (p->bandwidth_hz) {
 401                 case 6000000:
 402                         reg[6] |= 0x80;
 403                         break;
 404                 case 7000000:
 405                         reg[6] |= 0x40;
 406                         break;
 407                 case 8000000:
 408                 default:
 409                         break;
 410                 }
 411         } else {
 412                 err("%s: modulation type not supported!", __func__);
 413                 return -EINVAL;
 414         }
 415
 416         /* modified for Realtek demod */
 417         reg[5] |= 0x07;
 418
 419         for (i = 1; i <= 6; i++) {
 420                 ret = fc0013_writereg(priv, i, reg[i]);
 421                 if (ret)
 422                         goto exit;
 423         }
 424
 425         ret = fc0013_readreg(priv, 0x11, &tmp);
 426         if (ret)
 427                 goto exit;
 428         if (multi == 64)
 429                 ret = fc0013_writereg(priv, 0x11, tmp | 0x04);
 430         else
 431                 ret = fc0013_writereg(priv, 0x11, tmp & 0xfb);
 432         if (ret)
 433                 goto exit;
 434
 435         /* VCO Calibration */
 436         ret = fc0013_writereg(priv, 0x0e, 0x80);
 437         if (!ret)
 438                 ret = fc0013_writereg(priv, 0x0e, 0x00);
 439
 440         /* VCO Re-Calibration if needed */
 441         if (!ret)
 442                 ret = fc0013_writereg(priv, 0x0e, 0x00);
 443
 444         if (!ret) {
 445                 msleep(10);
 446                 ret = fc0013_readreg(priv, 0x0e, &tmp);
 447         }
 448         if (ret)
 449                 goto exit;
 450
 451         /* vco selection */
 452         tmp &= 0x3f;
 453
 454         if (vco_select) {
 455                 if (tmp > 0x3c) {
 456                         reg[6] &= ~0x08;
 457                         ret = fc0013_writereg(priv, 0x06, reg[6]);
 458                         if (!ret)
 459                                 ret = fc0013_writereg(priv, 0x0e, 0x80);
 460                         if (!ret)
 461                                 ret = fc0013_writereg(priv, 0x0e, 0x00);
 462                 }
 463         } else {
 464                 if (tmp < 0x02) {
 465                         reg[6] |= 0x08;
 466                         ret = fc0013_writereg(priv, 0x06, reg[6]);
 467                         if (!ret)
 468                                 ret = fc0013_writereg(priv, 0x0e, 0x80);
 469                         if (!ret)
 470                                 ret = fc0013_writereg(priv, 0x0e, 0x00);
 471                 }
 472         }
 473
 474         priv->frequency = p->frequency;
 475         priv->bandwidth = p->bandwidth_hz;
 476
 477 exit:
 478         if (fe->ops.i2c_gate_ctrl)
 479                 fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
 480         if (ret)
 481                 warn("%s: failed: %d", __func__, ret);
 482         return ret;
 483 }
 484
 485 static int fc0013_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 486 {
 487         struct fc0013_priv *priv = fe->tuner_priv;
 488         *frequency = priv->frequency;
 489         return 0;
 490 }
 491
 492 static int fc0013_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
 493 {
 494         /* always ? */
 495         *frequency = 0;
 496         return 0;
 497 }
 498
 499 static int fc0013_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
 500 {
 501         struct fc0013_priv *priv = fe->tuner_priv;
 502         *bandwidth = priv->bandwidth;
 503         return 0;
 504 }
 505
 506 #define INPUT_ADC_LEVEL -8
 507
 508 static int fc0013_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
 509 {
 510         struct fc0013_priv *priv = fe->tuner_priv;
 511         int ret;
 512         unsigned char tmp;
 513         int int_temp, lna_gain, int_lna, tot_agc_gain, power;
 514         static const int fc0013_lna_gain_table[] = {
 515                 /* low gain */
 516                 -63, -58, -99, -73,
 517                 -63, -65, -54, -60,
 518                 /* middle gain */
 519                  71,  70,  68,  67,
 520                  65,  63,  61,  58,
 521                 /* high gain */
 522                 197, 191, 188, 186,
 523                 184, 182, 181, 179,
 524         };
 525
 526         if (fe->ops.i2c_gate_ctrl)
 527                 fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
 528
 529         ret = fc0013_writereg(priv, 0x13, 0x00);
 530         if (ret)
 531                 goto err;
 532
 533         ret = fc0013_readreg(priv, 0x13, &tmp);
 534         if (ret)
 535                 goto err;
 536         int_temp = tmp;
 537
 538         ret = fc0013_readreg(priv, 0x14, &tmp);
 539         if (ret)
 540                 goto err;
 541         lna_gain = tmp & 0x1f;
 542
 543         if (fe->ops.i2c_gate_ctrl)
 544                 fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
 545
 546         if (lna_gain < ARRAY_SIZE(fc0013_lna_gain_table)) {
 547                 int_lna = fc0013_lna_gain_table[lna_gain];
 548                 tot_agc_gain = (abs((int_temp >> 5) - 7) - 2 +
 549                                 (int_temp & 0x1f)) * 2;
 550                 power = INPUT_ADC_LEVEL - tot_agc_gain - int_lna / 10;
 551
 552                 if (power >= 45)
 553                         *strength = 255;        /* 100% */
 554                 else if (power < -95)
 555                         *strength = 0;
 556                 else
 557                         *strength = (power + 95) * 255 / 140;
 558
 559                 *strength |= *strength << 8;
 560         } else {
 561                 ret = -1;
 562         }
 563
 564         goto exit;
 565
 566 err:
 567         if (fe->ops.i2c_gate_ctrl)
 568                 fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
 569 exit:
 570         if (ret)
 571                 warn("%s: failed: %d", __func__, ret);
 572         return ret;
 573 }
 574
 575 static const struct dvb_tuner_ops fc0013_tuner_ops = {
 576         .info = {
 577                 .name             = "Fitipower FC0013",
 578
 579                 .frequency_min_hz =   37 * MHz, /* estimate */
 580                 .frequency_max_hz = 1680 * MHz, /* CHECK */
 581         },
 582
 583         .release        = fc0013_release,
 584
 585         .init           = fc0013_init,
 586         .sleep          = fc0013_sleep,
 587
 588         .set_params     = fc0013_set_params,
 589
 590         .get_frequency  = fc0013_get_frequency,
 591         .get_if_frequency = fc0013_get_if_frequency,
 592         .get_bandwidth  = fc0013_get_bandwidth,
 593
 594         .get_rf_strength = fc0013_get_rf_strength,
 595 };
 596
 597 struct dvb_frontend *fc0013_attach(struct dvb_frontend *fe,
 598         struct i2c_adapter *i2c, u8 i2c_address, int dual_master,
 599         enum fc001x_xtal_freq xtal_freq)
 600 {
 601         struct fc0013_priv *priv = NULL;
 602
 603         priv = kzalloc(sizeof(struct fc0013_priv), GFP_KERNEL);
 604         if (priv == NULL)
 605                 return NULL;
 606
 607         priv->i2c = i2c;
 608         priv->dual_master = dual_master;
 609         priv->addr = i2c_address;
 610         priv->xtal_freq = xtal_freq;
 611
 612         info("Fitipower FC0013 successfully attached.");
 613
 614         fe->tuner_priv = priv;
 615
 616         memcpy(&fe->ops.tuner_ops, &fc0013_tuner_ops,
 617                 sizeof(struct dvb_tuner_ops));
 618
 619         return fe;
 620 }
 621 EXPORT_SYMBOL(fc0013_attach);
 622
 623 MODULE_DESCRIPTION("Fitipower FC0013 silicon tuner driver");
 624 MODULE_AUTHOR("Hans-Frieder Vogt <hfvogt@gmx.net>");
 625 MODULE_LICENSE("GPL");
 626 MODULE_VERSION("0.2");