1/* 2 * Frontend driver for mobile DVB-T demodulator DiBcom 3000M-B 3 * DiBcom (http://www.dibcom.fr/) 4 * 5 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de) 6 * 7 * based on GPL code from DibCom, which has 8 * 9 * Copyright (C) 2004 Amaury Demol for DiBcom (ademol@dibcom.fr) 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation, version 2. 14 * 15 * Acknowledgements 16 * 17 * Amaury Demol (ademol@dibcom.fr) from DiBcom for providing specs and driver 18 * sources, on which this driver (and the dvb-dibusb) are based. 19 * 20 * see Documentation/dvb/README.dvb-usb for more information 21 * 22 */ 23 24#include <linux/kernel.h> 25#include <linux/module.h> 26#include <linux/init.h> 27#include <linux/delay.h> 28#include <linux/string.h> 29#include <linux/slab.h> 30 31#include "dvb_frontend.h" 32 33#include "dib3000.h" 34#include "dib3000mb_priv.h" 35 36/* Version information */ 37#define DRIVER_VERSION "0.1" 38#define DRIVER_DESC "DiBcom 3000M-B DVB-T demodulator" 39#define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@desy.de" 40 41static int debug; 42module_param(debug, int, 0644); 43MODULE_PARM_DESC(debug, "set debugging level (1=info,2=xfer,4=setfe,8=getfe (|-able))."); 44 45#define deb_info(args...) dprintk(0x01,args) 46#define deb_i2c(args...) dprintk(0x02,args) 47#define deb_srch(args...) dprintk(0x04,args) 48#define deb_info(args...) dprintk(0x01,args) 49#define deb_xfer(args...) dprintk(0x02,args) 50#define deb_setf(args...) dprintk(0x04,args) 51#define deb_getf(args...) dprintk(0x08,args) 52 53static int dib3000_read_reg(struct dib3000_state *state, u16 reg) 54{ 55 u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff }; 56 u8 rb[2]; 57 struct i2c_msg msg[] = { 58 { .addr = state->config.demod_address, .flags = 0, .buf = wb, .len = 2 }, 59 { .addr = state->config.demod_address, .flags = I2C_M_RD, .buf = rb, .len = 2 }, 60 }; 61 62 if (i2c_transfer(state->i2c, msg, 2) != 2) 63 deb_i2c("i2c read error\n"); 64 65 deb_i2c("reading i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg, 66 (rb[0] << 8) | rb[1],(rb[0] << 8) | rb[1]); 67 68 return (rb[0] << 8) | rb[1]; 69} 70 71static int dib3000_write_reg(struct dib3000_state *state, u16 reg, u16 val) 72{ 73 u8 b[] = { 74 (reg >> 8) & 0xff, reg & 0xff, 75 (val >> 8) & 0xff, val & 0xff, 76 }; 77 struct i2c_msg msg[] = { 78 { .addr = state->config.demod_address, .flags = 0, .buf = b, .len = 4 } 79 }; 80 deb_i2c("writing i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,val,val); 81 82 return i2c_transfer(state->i2c,msg, 1) != 1 ? -EREMOTEIO : 0; 83} 84 85static int dib3000_search_status(u16 irq,u16 lock) 86{ 87 if (irq & 0x02) { 88 if (lock & 0x01) { 89 deb_srch("auto search succeeded\n"); 90 return 1; // auto search succeeded 91 } else { 92 deb_srch("auto search not successful\n"); 93 return 0; // auto search failed 94 } 95 } else if (irq & 0x01) { 96 deb_srch("auto search failed\n"); 97 return 0; // auto search failed 98 } 99 return -1; // try again 100} 101 102/* for auto search */ 103static u16 dib3000_seq[2][2][2] = /* fft,gua, inv */ 104 { /* fft */ 105 { /* gua */ 106 { 0, 1 }, /* 0 0 { 0,1 } */ 107 { 3, 9 }, /* 0 1 { 0,1 } */ 108 }, 109 { 110 { 2, 5 }, /* 1 0 { 0,1 } */ 111 { 6, 11 }, /* 1 1 { 0,1 } */ 112 } 113 }; 114 115static int dib3000mb_get_frontend(struct dvb_frontend* fe); 116 117static int dib3000mb_set_frontend(struct dvb_frontend *fe, int tuner) 118{ 119 struct dib3000_state* state = fe->demodulator_priv; 120 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 121 fe_code_rate_t fe_cr = FEC_NONE; 122 int search_state, seq; 123 124 if (tuner && fe->ops.tuner_ops.set_params) { 125 fe->ops.tuner_ops.set_params(fe); 126 if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); 127 128 deb_setf("bandwidth: "); 129 switch (c->bandwidth_hz) { 130 case 8000000: 131 deb_setf("8 MHz\n"); 132 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]); 133 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz); 134 break; 135 case 7000000: 136 deb_setf("7 MHz\n"); 137 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]); 138 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz); 139 break; 140 case 6000000: 141 deb_setf("6 MHz\n"); 142 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]); 143 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz); 144 break; 145 case 0: 146 return -EOPNOTSUPP; 147 default: 148 err("unknown bandwidth value."); 149 return -EINVAL; 150 } 151 } 152 wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4); 153 154 deb_setf("transmission mode: "); 155 switch (c->transmission_mode) { 156 case TRANSMISSION_MODE_2K: 157 deb_setf("2k\n"); 158 wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K); 159 break; 160 case TRANSMISSION_MODE_8K: 161 deb_setf("8k\n"); 162 wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K); 163 break; 164 case TRANSMISSION_MODE_AUTO: 165 deb_setf("auto\n"); 166 break; 167 default: 168 return -EINVAL; 169 } 170 171 deb_setf("guard: "); 172 switch (c->guard_interval) { 173 case GUARD_INTERVAL_1_32: 174 deb_setf("1_32\n"); 175 wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32); 176 break; 177 case GUARD_INTERVAL_1_16: 178 deb_setf("1_16\n"); 179 wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16); 180 break; 181 case GUARD_INTERVAL_1_8: 182 deb_setf("1_8\n"); 183 wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8); 184 break; 185 case GUARD_INTERVAL_1_4: 186 deb_setf("1_4\n"); 187 wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4); 188 break; 189 case GUARD_INTERVAL_AUTO: 190 deb_setf("auto\n"); 191 break; 192 default: 193 return -EINVAL; 194 } 195 196 deb_setf("inversion: "); 197 switch (c->inversion) { 198 case INVERSION_OFF: 199 deb_setf("off\n"); 200 wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF); 201 break; 202 case INVERSION_AUTO: 203 deb_setf("auto "); 204 break; 205 case INVERSION_ON: 206 deb_setf("on\n"); 207 wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON); 208 break; 209 default: 210 return -EINVAL; 211 } 212 213 deb_setf("modulation: "); 214 switch (c->modulation) { 215 case QPSK: 216 deb_setf("qpsk\n"); 217 wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK); 218 break; 219 case QAM_16: 220 deb_setf("qam16\n"); 221 wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM); 222 break; 223 case QAM_64: 224 deb_setf("qam64\n"); 225 wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM); 226 break; 227 case QAM_AUTO: 228 break; 229 default: 230 return -EINVAL; 231 } 232 deb_setf("hierarchy: "); 233 switch (c->hierarchy) { 234 case HIERARCHY_NONE: 235 deb_setf("none "); 236 /* fall through */ 237 case HIERARCHY_1: 238 deb_setf("alpha=1\n"); 239 wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1); 240 break; 241 case HIERARCHY_2: 242 deb_setf("alpha=2\n"); 243 wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2); 244 break; 245 case HIERARCHY_4: 246 deb_setf("alpha=4\n"); 247 wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4); 248 break; 249 case HIERARCHY_AUTO: 250 deb_setf("alpha=auto\n"); 251 break; 252 default: 253 return -EINVAL; 254 } 255 256 deb_setf("hierarchy: "); 257 if (c->hierarchy == HIERARCHY_NONE) { 258 deb_setf("none\n"); 259 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF); 260 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP); 261 fe_cr = c->code_rate_HP; 262 } else if (c->hierarchy != HIERARCHY_AUTO) { 263 deb_setf("on\n"); 264 wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON); 265 wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP); 266 fe_cr = c->code_rate_LP; 267 } 268 deb_setf("fec: "); 269 switch (fe_cr) { 270 case FEC_1_2: 271 deb_setf("1_2\n"); 272 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2); 273 break; 274 case FEC_2_3: 275 deb_setf("2_3\n"); 276 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3); 277 break; 278 case FEC_3_4: 279 deb_setf("3_4\n"); 280 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4); 281 break; 282 case FEC_5_6: 283 deb_setf("5_6\n"); 284 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6); 285 break; 286 case FEC_7_8: 287 deb_setf("7_8\n"); 288 wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8); 289 break; 290 case FEC_NONE: 291 deb_setf("none "); 292 break; 293 case FEC_AUTO: 294 deb_setf("auto\n"); 295 break; 296 default: 297 return -EINVAL; 298 } 299 300 seq = dib3000_seq 301 [c->transmission_mode == TRANSMISSION_MODE_AUTO] 302 [c->guard_interval == GUARD_INTERVAL_AUTO] 303 [c->inversion == INVERSION_AUTO]; 304 305 deb_setf("seq? %d\n", seq); 306 307 wr(DIB3000MB_REG_SEQ, seq); 308 309 wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE); 310 311 if (c->transmission_mode == TRANSMISSION_MODE_2K) { 312 if (c->guard_interval == GUARD_INTERVAL_1_8) { 313 wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8); 314 } else { 315 wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT); 316 } 317 318 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K); 319 } else { 320 wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT); 321 } 322 323 wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF); 324 wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF); 325 wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF); 326 327 wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high); 328 329 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE); 330 331 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL); 332 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF); 333 334 /* wait for AGC lock */ 335 msleep(70); 336 337 wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low); 338 339 /* something has to be auto searched */ 340 if (c->modulation == QAM_AUTO || 341 c->hierarchy == HIERARCHY_AUTO || 342 fe_cr == FEC_AUTO || 343 c->inversion == INVERSION_AUTO) { 344 int as_count=0; 345 346 deb_setf("autosearch enabled.\n"); 347 348 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT); 349 350 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH); 351 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF); 352 353 while ((search_state = 354 dib3000_search_status( 355 rd(DIB3000MB_REG_AS_IRQ_PENDING), 356 rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100) 357 msleep(1); 358 359 deb_setf("search_state after autosearch %d after %d checks\n",search_state,as_count); 360 361 if (search_state == 1) { 362 if (dib3000mb_get_frontend(fe) == 0) { 363 deb_setf("reading tuning data from frontend succeeded.\n"); 364 return dib3000mb_set_frontend(fe, 0); 365 } 366 } 367 368 } else { 369 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL); 370 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF); 371 } 372 373 return 0; 374} 375 376static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode) 377{ 378 struct dib3000_state* state = fe->demodulator_priv; 379 380 deb_info("dib3000mb is getting up.\n"); 381 wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP); 382 383 wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC); 384 385 wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE); 386 wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST); 387 388 wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT); 389 390 wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON); 391 392 wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB); 393 wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB); 394 395 wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]); 396 397 wr_foreach(dib3000mb_reg_impulse_noise, 398 dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]); 399 400 wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain); 401 402 wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT); 403 404 wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase); 405 406 wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration); 407 408 wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low); 409 410 wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT); 411 wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4); 412 wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT); 413 wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]); 414 415 wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz); 416 417 wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68); 418 wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69); 419 wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71); 420 wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77); 421 wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78); 422 wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT); 423 wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92); 424 wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96); 425 wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97); 426 wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106); 427 wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107); 428 wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108); 429 wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122); 430 wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF); 431 wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT); 432 433 wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs); 434 435 wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON); 436 wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB); 437 wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB); 438 439 wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE); 440 441 wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142); 442 wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188); 443 wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE); 444 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT); 445 wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146); 446 wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147); 447 448 wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF); 449 450 return 0; 451} 452 453static int dib3000mb_get_frontend(struct dvb_frontend* fe) 454{ 455 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 456 struct dib3000_state* state = fe->demodulator_priv; 457 fe_code_rate_t *cr; 458 u16 tps_val; 459 int inv_test1,inv_test2; 460 u32 dds_val, threshold = 0x800000; 461 462 if (!rd(DIB3000MB_REG_TPS_LOCK)) 463 return 0; 464 465 dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB); 466 deb_getf("DDS_VAL: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB)); 467 if (dds_val < threshold) 468 inv_test1 = 0; 469 else if (dds_val == threshold) 470 inv_test1 = 1; 471 else 472 inv_test1 = 2; 473 474 dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB); 475 deb_getf("DDS_FREQ: %x %x %x",dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB)); 476 if (dds_val < threshold) 477 inv_test2 = 0; 478 else if (dds_val == threshold) 479 inv_test2 = 1; 480 else 481 inv_test2 = 2; 482 483 c->inversion = 484 ((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) || 485 ((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ? 486 INVERSION_ON : INVERSION_OFF; 487 488 deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, c->inversion); 489 490 switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) { 491 case DIB3000_CONSTELLATION_QPSK: 492 deb_getf("QPSK "); 493 c->modulation = QPSK; 494 break; 495 case DIB3000_CONSTELLATION_16QAM: 496 deb_getf("QAM16 "); 497 c->modulation = QAM_16; 498 break; 499 case DIB3000_CONSTELLATION_64QAM: 500 deb_getf("QAM64 "); 501 c->modulation = QAM_64; 502 break; 503 default: 504 err("Unexpected constellation returned by TPS (%d)", tps_val); 505 break; 506 } 507 deb_getf("TPS: %d\n", tps_val); 508 509 if (rd(DIB3000MB_REG_TPS_HRCH)) { 510 deb_getf("HRCH ON\n"); 511 cr = &c->code_rate_LP; 512 c->code_rate_HP = FEC_NONE; 513 switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) { 514 case DIB3000_ALPHA_0: 515 deb_getf("HIERARCHY_NONE "); 516 c->hierarchy = HIERARCHY_NONE; 517 break; 518 case DIB3000_ALPHA_1: 519 deb_getf("HIERARCHY_1 "); 520 c->hierarchy = HIERARCHY_1; 521 break; 522 case DIB3000_ALPHA_2: 523 deb_getf("HIERARCHY_2 "); 524 c->hierarchy = HIERARCHY_2; 525 break; 526 case DIB3000_ALPHA_4: 527 deb_getf("HIERARCHY_4 "); 528 c->hierarchy = HIERARCHY_4; 529 break; 530 default: 531 err("Unexpected ALPHA value returned by TPS (%d)", tps_val); 532 break; 533 } 534 deb_getf("TPS: %d\n", tps_val); 535 536 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP); 537 } else { 538 deb_getf("HRCH OFF\n"); 539 cr = &c->code_rate_HP; 540 c->code_rate_LP = FEC_NONE; 541 c->hierarchy = HIERARCHY_NONE; 542 543 tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP); 544 } 545 546 switch (tps_val) { 547 case DIB3000_FEC_1_2: 548 deb_getf("FEC_1_2 "); 549 *cr = FEC_1_2; 550 break; 551 case DIB3000_FEC_2_3: 552 deb_getf("FEC_2_3 "); 553 *cr = FEC_2_3; 554 break; 555 case DIB3000_FEC_3_4: 556 deb_getf("FEC_3_4 "); 557 *cr = FEC_3_4; 558 break; 559 case DIB3000_FEC_5_6: 560 deb_getf("FEC_5_6 "); 561 *cr = FEC_4_5; 562 break; 563 case DIB3000_FEC_7_8: 564 deb_getf("FEC_7_8 "); 565 *cr = FEC_7_8; 566 break; 567 default: 568 err("Unexpected FEC returned by TPS (%d)", tps_val); 569 break; 570 } 571 deb_getf("TPS: %d\n",tps_val); 572 573 switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) { 574 case DIB3000_GUARD_TIME_1_32: 575 deb_getf("GUARD_INTERVAL_1_32 "); 576 c->guard_interval = GUARD_INTERVAL_1_32; 577 break; 578 case DIB3000_GUARD_TIME_1_16: 579 deb_getf("GUARD_INTERVAL_1_16 "); 580 c->guard_interval = GUARD_INTERVAL_1_16; 581 break; 582 case DIB3000_GUARD_TIME_1_8: 583 deb_getf("GUARD_INTERVAL_1_8 "); 584 c->guard_interval = GUARD_INTERVAL_1_8; 585 break; 586 case DIB3000_GUARD_TIME_1_4: 587 deb_getf("GUARD_INTERVAL_1_4 "); 588 c->guard_interval = GUARD_INTERVAL_1_4; 589 break; 590 default: 591 err("Unexpected Guard Time returned by TPS (%d)", tps_val); 592 break; 593 } 594 deb_getf("TPS: %d\n", tps_val); 595 596 switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) { 597 case DIB3000_TRANSMISSION_MODE_2K: 598 deb_getf("TRANSMISSION_MODE_2K "); 599 c->transmission_mode = TRANSMISSION_MODE_2K; 600 break; 601 case DIB3000_TRANSMISSION_MODE_8K: 602 deb_getf("TRANSMISSION_MODE_8K "); 603 c->transmission_mode = TRANSMISSION_MODE_8K; 604 break; 605 default: 606 err("unexpected transmission mode return by TPS (%d)", tps_val); 607 break; 608 } 609 deb_getf("TPS: %d\n", tps_val); 610 611 return 0; 612} 613 614static int dib3000mb_read_status(struct dvb_frontend* fe, fe_status_t *stat) 615{ 616 struct dib3000_state* state = fe->demodulator_priv; 617 618 *stat = 0; 619 620 if (rd(DIB3000MB_REG_AGC_LOCK)) 621 *stat |= FE_HAS_SIGNAL; 622 if (rd(DIB3000MB_REG_CARRIER_LOCK)) 623 *stat |= FE_HAS_CARRIER; 624 if (rd(DIB3000MB_REG_VIT_LCK)) 625 *stat |= FE_HAS_VITERBI; 626 if (rd(DIB3000MB_REG_TS_SYNC_LOCK)) 627 *stat |= (FE_HAS_SYNC | FE_HAS_LOCK); 628 629 deb_getf("actual status is %2x\n",*stat); 630 631 deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n", 632 rd(DIB3000MB_REG_TPS_LOCK), 633 rd(DIB3000MB_REG_TPS_QAM), 634 rd(DIB3000MB_REG_TPS_HRCH), 635 rd(DIB3000MB_REG_TPS_VIT_ALPHA), 636 rd(DIB3000MB_REG_TPS_CODE_RATE_HP), 637 rd(DIB3000MB_REG_TPS_CODE_RATE_LP), 638 rd(DIB3000MB_REG_TPS_GUARD_TIME), 639 rd(DIB3000MB_REG_TPS_FFT), 640 rd(DIB3000MB_REG_TPS_CELL_ID)); 641 642 //*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; 643 return 0; 644} 645 646static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber) 647{ 648 struct dib3000_state* state = fe->demodulator_priv; 649 650 *ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB)); 651 return 0; 652} 653 654/* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */ 655static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength) 656{ 657 struct dib3000_state* state = fe->demodulator_priv; 658 659 *strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170; 660 return 0; 661} 662 663static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr) 664{ 665 struct dib3000_state* state = fe->demodulator_priv; 666 short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER); 667 int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) | 668 rd(DIB3000MB_REG_NOISE_POWER_LSB); 669 *snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1); 670 return 0; 671} 672 673static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc) 674{ 675 struct dib3000_state* state = fe->demodulator_priv; 676 677 *unc = rd(DIB3000MB_REG_PACKET_ERROR_RATE); 678 return 0; 679} 680 681static int dib3000mb_sleep(struct dvb_frontend* fe) 682{ 683 struct dib3000_state* state = fe->demodulator_priv; 684 deb_info("dib3000mb is going to bed.\n"); 685 wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN); 686 return 0; 687} 688 689static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) 690{ 691 tune->min_delay_ms = 800; 692 return 0; 693} 694 695static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe) 696{ 697 return dib3000mb_fe_init(fe, 0); 698} 699 700static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend *fe) 701{ 702 return dib3000mb_set_frontend(fe, 1); 703} 704 705static void dib3000mb_release(struct dvb_frontend* fe) 706{ 707 struct dib3000_state *state = fe->demodulator_priv; 708 kfree(state); 709} 710 711/* pid filter and transfer stuff */ 712static int dib3000mb_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff) 713{ 714 struct dib3000_state *state = fe->demodulator_priv; 715 pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0); 716 wr(index+DIB3000MB_REG_FIRST_PID,pid); 717 return 0; 718} 719 720static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff) 721{ 722 struct dib3000_state *state = fe->demodulator_priv; 723 724 deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling"); 725 if (onoff) { 726 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE); 727 } else { 728 wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT); 729 } 730 return 0; 731} 732 733static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff) 734{ 735 struct dib3000_state *state = fe->demodulator_priv; 736 deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling"); 737 wr(DIB3000MB_REG_PID_PARSE,onoff); 738 return 0; 739} 740 741static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr) 742{ 743 struct dib3000_state *state = fe->demodulator_priv; 744 if (onoff) { 745 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr)); 746 } else { 747 wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr)); 748 } 749 return 0; 750} 751 752static struct dvb_frontend_ops dib3000mb_ops; 753 754struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config, 755 struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops) 756{ 757 struct dib3000_state* state = NULL; 758 759 /* allocate memory for the internal state */ 760 state = kzalloc(sizeof(struct dib3000_state), GFP_KERNEL); 761 if (state == NULL) 762 goto error; 763 764 /* setup the state */ 765 state->i2c = i2c; 766 memcpy(&state->config,config,sizeof(struct dib3000_config)); 767 768 /* check for the correct demod */ 769 if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM) 770 goto error; 771 772 if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID) 773 goto error; 774 775 /* create dvb_frontend */ 776 memcpy(&state->frontend.ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops)); 777 state->frontend.demodulator_priv = state; 778 779 /* set the xfer operations */ 780 xfer_ops->pid_parse = dib3000mb_pid_parse; 781 xfer_ops->fifo_ctrl = dib3000mb_fifo_control; 782 xfer_ops->pid_ctrl = dib3000mb_pid_control; 783 xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl; 784 785 return &state->frontend; 786 787error: 788 kfree(state); 789 return NULL; 790} 791 792static struct dvb_frontend_ops dib3000mb_ops = { 793 .delsys = { SYS_DVBT }, 794 .info = { 795 .name = "DiBcom 3000M-B DVB-T", 796 .frequency_min = 44250000, 797 .frequency_max = 867250000, 798 .frequency_stepsize = 62500, 799 .caps = FE_CAN_INVERSION_AUTO | 800 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 801 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 802 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | 803 FE_CAN_TRANSMISSION_MODE_AUTO | 804 FE_CAN_GUARD_INTERVAL_AUTO | 805 FE_CAN_RECOVER | 806 FE_CAN_HIERARCHY_AUTO, 807 }, 808 809 .release = dib3000mb_release, 810 811 .init = dib3000mb_fe_init_nonmobile, 812 .sleep = dib3000mb_sleep, 813 814 .set_frontend = dib3000mb_set_frontend_and_tuner, 815 .get_frontend = dib3000mb_get_frontend, 816 .get_tune_settings = dib3000mb_fe_get_tune_settings, 817 818 .read_status = dib3000mb_read_status, 819 .read_ber = dib3000mb_read_ber, 820 .read_signal_strength = dib3000mb_read_signal_strength, 821 .read_snr = dib3000mb_read_snr, 822 .read_ucblocks = dib3000mb_read_unc_blocks, 823}; 824 825MODULE_AUTHOR(DRIVER_AUTHOR); 826MODULE_DESCRIPTION(DRIVER_DESC); 827MODULE_LICENSE("GPL"); 828 829EXPORT_SYMBOL(dib3000mb_attach); 830