1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Driver for DiBcom DiB3000MC/P-demodulator. 4 * 5 * Copyright (C) 2004-7 DiBcom (http://www.dibcom.fr/) 6 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de) 7 * 8 * This code is partially based on the previous dib3000mc.c . 9 */ 10 11 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 12 13 #include <linux/kernel.h> 14 #include <linux/slab.h> 15 #include <linux/i2c.h> 16 17 #include <media/dvb_frontend.h> 18 19 #include "dib3000mc.h" 20 21 static int debug; 22 module_param(debug, int, 0644); 23 MODULE_PARM_DESC(debug, "turn on debugging (default: 0)"); 24 25 static int buggy_sfn_workaround; 26 module_param(buggy_sfn_workaround, int, 0644); 27 MODULE_PARM_DESC(buggy_sfn_workaround, "Enable work-around for buggy SFNs (default: 0)"); 28 29 #define dprintk(fmt, arg...) do { \ 30 if (debug) \ 31 printk(KERN_DEBUG pr_fmt("%s: " fmt), \ 32 __func__, ##arg); \ 33 } while (0) 34 35 struct dib3000mc_state { 36 struct dvb_frontend demod; 37 struct dib3000mc_config *cfg; 38 39 u8 i2c_addr; 40 struct i2c_adapter *i2c_adap; 41 42 struct dibx000_i2c_master i2c_master; 43 44 u32 timf; 45 46 u32 current_bandwidth; 47 48 u16 dev_id; 49 50 u8 sfn_workaround_active :1; 51 }; 52 53 static u16 dib3000mc_read_word(struct dib3000mc_state *state, u16 reg) 54 { 55 struct i2c_msg msg[2] = { 56 { .addr = state->i2c_addr >> 1, .flags = 0, .len = 2 }, 57 { .addr = state->i2c_addr >> 1, .flags = I2C_M_RD, .len = 2 }, 58 }; 59 u16 word; 60 u8 *b; 61 62 b = kmalloc(4, GFP_KERNEL); 63 if (!b) 64 return 0; 65 66 b[0] = (reg >> 8) | 0x80; 67 b[1] = reg; 68 b[2] = 0; 69 b[3] = 0; 70 71 msg[0].buf = b; 72 msg[1].buf = b + 2; 73 74 if (i2c_transfer(state->i2c_adap, msg, 2) != 2) 75 dprintk("i2c read error on %d\n",reg); 76 77 word = (b[2] << 8) | b[3]; 78 kfree(b); 79 80 return word; 81 } 82 83 static int dib3000mc_write_word(struct dib3000mc_state *state, u16 reg, u16 val) 84 { 85 struct i2c_msg msg = { 86 .addr = state->i2c_addr >> 1, .flags = 0, .len = 4 87 }; 88 int rc; 89 u8 *b; 90 91 b = kmalloc(4, GFP_KERNEL); 92 if (!b) 93 return -ENOMEM; 94 95 b[0] = reg >> 8; 96 b[1] = reg; 97 b[2] = val >> 8; 98 b[3] = val; 99 100 msg.buf = b; 101 102 rc = i2c_transfer(state->i2c_adap, &msg, 1) != 1 ? -EREMOTEIO : 0; 103 kfree(b); 104 105 return rc; 106 } 107 108 static int dib3000mc_identify(struct dib3000mc_state *state) 109 { 110 u16 value; 111 if ((value = dib3000mc_read_word(state, 1025)) != 0x01b3) { 112 dprintk("-E- DiB3000MC/P: wrong Vendor ID (read=0x%x)\n",value); 113 return -EREMOTEIO; 114 } 115 116 value = dib3000mc_read_word(state, 1026); 117 if (value != 0x3001 && value != 0x3002) { 118 dprintk("-E- DiB3000MC/P: wrong Device ID (%x)\n",value); 119 return -EREMOTEIO; 120 } 121 state->dev_id = value; 122 123 dprintk("-I- found DiB3000MC/P: %x\n",state->dev_id); 124 125 return 0; 126 } 127 128 static int dib3000mc_set_timing(struct dib3000mc_state *state, s16 nfft, u32 bw, u8 update_offset) 129 { 130 u32 timf; 131 132 if (state->timf == 0) { 133 timf = 1384402; // default value for 8MHz 134 if (update_offset) 135 msleep(200); // first time we do an update 136 } else 137 timf = state->timf; 138 139 timf *= (bw / 1000); 140 141 if (update_offset) { 142 s16 tim_offs = dib3000mc_read_word(state, 416); 143 144 if (tim_offs & 0x2000) 145 tim_offs -= 0x4000; 146 147 if (nfft == TRANSMISSION_MODE_2K) 148 tim_offs *= 4; 149 150 timf += tim_offs; 151 state->timf = timf / (bw / 1000); 152 } 153 154 dprintk("timf: %d\n", timf); 155 156 dib3000mc_write_word(state, 23, (u16) (timf >> 16)); 157 dib3000mc_write_word(state, 24, (u16) (timf ) & 0xffff); 158 159 return 0; 160 } 161 162 static int dib3000mc_setup_pwm_state(struct dib3000mc_state *state) 163 { 164 u16 reg_51, reg_52 = state->cfg->agc->setup & 0xfefb; 165 if (state->cfg->pwm3_inversion) { 166 reg_51 = (2 << 14) | (0 << 10) | (7 << 6) | (2 << 2) | (2 << 0); 167 reg_52 |= (1 << 2); 168 } else { 169 reg_51 = (2 << 14) | (4 << 10) | (7 << 6) | (2 << 2) | (2 << 0); 170 reg_52 |= (1 << 8); 171 } 172 dib3000mc_write_word(state, 51, reg_51); 173 dib3000mc_write_word(state, 52, reg_52); 174 175 if (state->cfg->use_pwm3) 176 dib3000mc_write_word(state, 245, (1 << 3) | (1 << 0)); 177 else 178 dib3000mc_write_word(state, 245, 0); 179 180 dib3000mc_write_word(state, 1040, 0x3); 181 return 0; 182 } 183 184 static int dib3000mc_set_output_mode(struct dib3000mc_state *state, int mode) 185 { 186 int ret = 0; 187 u16 fifo_threshold = 1792; 188 u16 outreg = 0; 189 u16 outmode = 0; 190 u16 elecout = 1; 191 u16 smo_reg = dib3000mc_read_word(state, 206) & 0x0010; /* keep the pid_parse bit */ 192 193 dprintk("-I- Setting output mode for demod %p to %d\n", 194 &state->demod, mode); 195 196 switch (mode) { 197 case OUTMODE_HIGH_Z: // disable 198 elecout = 0; 199 break; 200 case OUTMODE_MPEG2_PAR_GATED_CLK: // STBs with parallel gated clock 201 outmode = 0; 202 break; 203 case OUTMODE_MPEG2_PAR_CONT_CLK: // STBs with parallel continues clock 204 outmode = 1; 205 break; 206 case OUTMODE_MPEG2_SERIAL: // STBs with serial input 207 outmode = 2; 208 break; 209 case OUTMODE_MPEG2_FIFO: // e.g. USB feeding 210 elecout = 3; 211 /*ADDR @ 206 : 212 P_smo_error_discard [1;6:6] = 0 213 P_smo_rs_discard [1;5:5] = 0 214 P_smo_pid_parse [1;4:4] = 0 215 P_smo_fifo_flush [1;3:3] = 0 216 P_smo_mode [2;2:1] = 11 217 P_smo_ovf_prot [1;0:0] = 0 218 */ 219 smo_reg |= 3 << 1; 220 fifo_threshold = 512; 221 outmode = 5; 222 break; 223 case OUTMODE_DIVERSITY: 224 outmode = 4; 225 elecout = 1; 226 break; 227 default: 228 dprintk("Unhandled output_mode passed to be set for demod %p\n",&state->demod); 229 outmode = 0; 230 break; 231 } 232 233 if ((state->cfg->output_mpeg2_in_188_bytes)) 234 smo_reg |= (1 << 5); // P_smo_rs_discard [1;5:5] = 1 235 236 outreg = dib3000mc_read_word(state, 244) & 0x07FF; 237 outreg |= (outmode << 11); 238 ret |= dib3000mc_write_word(state, 244, outreg); 239 ret |= dib3000mc_write_word(state, 206, smo_reg); /*smo_ mode*/ 240 ret |= dib3000mc_write_word(state, 207, fifo_threshold); /* synchronous fread */ 241 ret |= dib3000mc_write_word(state, 1040, elecout); /* P_out_cfg */ 242 return ret; 243 } 244 245 static int dib3000mc_set_bandwidth(struct dib3000mc_state *state, u32 bw) 246 { 247 u16 bw_cfg[6] = { 0 }; 248 u16 imp_bw_cfg[3] = { 0 }; 249 u16 reg; 250 251 /* settings here are for 27.7MHz */ 252 switch (bw) { 253 case 8000: 254 bw_cfg[0] = 0x0019; bw_cfg[1] = 0x5c30; bw_cfg[2] = 0x0054; bw_cfg[3] = 0x88a0; bw_cfg[4] = 0x01a6; bw_cfg[5] = 0xab20; 255 imp_bw_cfg[0] = 0x04db; imp_bw_cfg[1] = 0x00db; imp_bw_cfg[2] = 0x00b7; 256 break; 257 258 case 7000: 259 bw_cfg[0] = 0x001c; bw_cfg[1] = 0xfba5; bw_cfg[2] = 0x0060; bw_cfg[3] = 0x9c25; bw_cfg[4] = 0x01e3; bw_cfg[5] = 0x0cb7; 260 imp_bw_cfg[0] = 0x04c0; imp_bw_cfg[1] = 0x00c0; imp_bw_cfg[2] = 0x00a0; 261 break; 262 263 case 6000: 264 bw_cfg[0] = 0x0021; bw_cfg[1] = 0xd040; bw_cfg[2] = 0x0070; bw_cfg[3] = 0xb62b; bw_cfg[4] = 0x0233; bw_cfg[5] = 0x8ed5; 265 imp_bw_cfg[0] = 0x04a5; imp_bw_cfg[1] = 0x00a5; imp_bw_cfg[2] = 0x0089; 266 break; 267 268 case 5000: 269 bw_cfg[0] = 0x0028; bw_cfg[1] = 0x9380; bw_cfg[2] = 0x0087; bw_cfg[3] = 0x4100; bw_cfg[4] = 0x02a4; bw_cfg[5] = 0x4500; 270 imp_bw_cfg[0] = 0x0489; imp_bw_cfg[1] = 0x0089; imp_bw_cfg[2] = 0x0072; 271 break; 272 273 default: return -EINVAL; 274 } 275 276 for (reg = 6; reg < 12; reg++) 277 dib3000mc_write_word(state, reg, bw_cfg[reg - 6]); 278 dib3000mc_write_word(state, 12, 0x0000); 279 dib3000mc_write_word(state, 13, 0x03e8); 280 dib3000mc_write_word(state, 14, 0x0000); 281 dib3000mc_write_word(state, 15, 0x03f2); 282 dib3000mc_write_word(state, 16, 0x0001); 283 dib3000mc_write_word(state, 17, 0xb0d0); 284 // P_sec_len 285 dib3000mc_write_word(state, 18, 0x0393); 286 dib3000mc_write_word(state, 19, 0x8700); 287 288 for (reg = 55; reg < 58; reg++) 289 dib3000mc_write_word(state, reg, imp_bw_cfg[reg - 55]); 290 291 // Timing configuration 292 dib3000mc_set_timing(state, TRANSMISSION_MODE_2K, bw, 0); 293 294 return 0; 295 } 296 297 static u16 impulse_noise_val[29] = 298 299 { 300 0x38, 0x6d9, 0x3f28, 0x7a7, 0x3a74, 0x196, 0x32a, 0x48c, 0x3ffe, 0x7f3, 301 0x2d94, 0x76, 0x53d, 0x3ff8, 0x7e3, 0x3320, 0x76, 0x5b3, 0x3feb, 0x7d2, 302 0x365e, 0x76, 0x48c, 0x3ffe, 0x5b3, 0x3feb, 0x76, 0x0000, 0xd 303 }; 304 305 static void dib3000mc_set_impulse_noise(struct dib3000mc_state *state, u8 mode, s16 nfft) 306 { 307 u16 i; 308 for (i = 58; i < 87; i++) 309 dib3000mc_write_word(state, i, impulse_noise_val[i-58]); 310 311 if (nfft == TRANSMISSION_MODE_8K) { 312 dib3000mc_write_word(state, 58, 0x3b); 313 dib3000mc_write_word(state, 84, 0x00); 314 dib3000mc_write_word(state, 85, 0x8200); 315 } 316 317 dib3000mc_write_word(state, 34, 0x1294); 318 dib3000mc_write_word(state, 35, 0x1ff8); 319 if (mode == 1) 320 dib3000mc_write_word(state, 55, dib3000mc_read_word(state, 55) | (1 << 10)); 321 } 322 323 static int dib3000mc_init(struct dvb_frontend *demod) 324 { 325 struct dib3000mc_state *state = demod->demodulator_priv; 326 struct dibx000_agc_config *agc = state->cfg->agc; 327 328 // Restart Configuration 329 dib3000mc_write_word(state, 1027, 0x8000); 330 dib3000mc_write_word(state, 1027, 0x0000); 331 332 // power up the demod + mobility configuration 333 dib3000mc_write_word(state, 140, 0x0000); 334 dib3000mc_write_word(state, 1031, 0); 335 336 if (state->cfg->mobile_mode) { 337 dib3000mc_write_word(state, 139, 0x0000); 338 dib3000mc_write_word(state, 141, 0x0000); 339 dib3000mc_write_word(state, 175, 0x0002); 340 dib3000mc_write_word(state, 1032, 0x0000); 341 } else { 342 dib3000mc_write_word(state, 139, 0x0001); 343 dib3000mc_write_word(state, 141, 0x0000); 344 dib3000mc_write_word(state, 175, 0x0000); 345 dib3000mc_write_word(state, 1032, 0x012C); 346 } 347 dib3000mc_write_word(state, 1033, 0x0000); 348 349 // P_clk_cfg 350 dib3000mc_write_word(state, 1037, 0x3130); 351 352 // other configurations 353 354 // P_ctrl_sfreq 355 dib3000mc_write_word(state, 33, (5 << 0)); 356 dib3000mc_write_word(state, 88, (1 << 10) | (0x10 << 0)); 357 358 // Phase noise control 359 // P_fft_phacor_inh, P_fft_phacor_cpe, P_fft_powrange 360 dib3000mc_write_word(state, 99, (1 << 9) | (0x20 << 0)); 361 362 if (state->cfg->phase_noise_mode == 0) 363 dib3000mc_write_word(state, 111, 0x00); 364 else 365 dib3000mc_write_word(state, 111, 0x02); 366 367 // P_agc_global 368 dib3000mc_write_word(state, 50, 0x8000); 369 370 // agc setup misc 371 dib3000mc_setup_pwm_state(state); 372 373 // P_agc_counter_lock 374 dib3000mc_write_word(state, 53, 0x87); 375 // P_agc_counter_unlock 376 dib3000mc_write_word(state, 54, 0x87); 377 378 /* agc */ 379 dib3000mc_write_word(state, 36, state->cfg->max_time); 380 dib3000mc_write_word(state, 37, (state->cfg->agc_command1 << 13) | (state->cfg->agc_command2 << 12) | (0x1d << 0)); 381 dib3000mc_write_word(state, 38, state->cfg->pwm3_value); 382 dib3000mc_write_word(state, 39, state->cfg->ln_adc_level); 383 384 // set_agc_loop_Bw 385 dib3000mc_write_word(state, 40, 0x0179); 386 dib3000mc_write_word(state, 41, 0x03f0); 387 388 dib3000mc_write_word(state, 42, agc->agc1_max); 389 dib3000mc_write_word(state, 43, agc->agc1_min); 390 dib3000mc_write_word(state, 44, agc->agc2_max); 391 dib3000mc_write_word(state, 45, agc->agc2_min); 392 dib3000mc_write_word(state, 46, (agc->agc1_pt1 << 8) | agc->agc1_pt2); 393 dib3000mc_write_word(state, 47, (agc->agc1_slope1 << 8) | agc->agc1_slope2); 394 dib3000mc_write_word(state, 48, (agc->agc2_pt1 << 8) | agc->agc2_pt2); 395 dib3000mc_write_word(state, 49, (agc->agc2_slope1 << 8) | agc->agc2_slope2); 396 397 // Begin: TimeOut registers 398 // P_pha3_thres 399 dib3000mc_write_word(state, 110, 3277); 400 // P_timf_alpha = 6, P_corm_alpha = 6, P_corm_thres = 0x80 401 dib3000mc_write_word(state, 26, 0x6680); 402 // lock_mask0 403 dib3000mc_write_word(state, 1, 4); 404 // lock_mask1 405 dib3000mc_write_word(state, 2, 4); 406 // lock_mask2 407 dib3000mc_write_word(state, 3, 0x1000); 408 // P_search_maxtrial=1 409 dib3000mc_write_word(state, 5, 1); 410 411 dib3000mc_set_bandwidth(state, 8000); 412 413 // div_lock_mask 414 dib3000mc_write_word(state, 4, 0x814); 415 416 dib3000mc_write_word(state, 21, (1 << 9) | 0x164); 417 dib3000mc_write_word(state, 22, 0x463d); 418 419 // Spurious rm cfg 420 // P_cspu_regul, P_cspu_win_cut 421 dib3000mc_write_word(state, 120, 0x200f); 422 // P_adp_selec_monit 423 dib3000mc_write_word(state, 134, 0); 424 425 // Fec cfg 426 dib3000mc_write_word(state, 195, 0x10); 427 428 // diversity register: P_dvsy_sync_wait.. 429 dib3000mc_write_word(state, 180, 0x2FF0); 430 431 // Impulse noise configuration 432 dib3000mc_set_impulse_noise(state, 0, TRANSMISSION_MODE_8K); 433 434 // output mode set-up 435 dib3000mc_set_output_mode(state, OUTMODE_HIGH_Z); 436 437 /* close the i2c-gate */ 438 dib3000mc_write_word(state, 769, (1 << 7) ); 439 440 return 0; 441 } 442 443 static int dib3000mc_sleep(struct dvb_frontend *demod) 444 { 445 struct dib3000mc_state *state = demod->demodulator_priv; 446 447 dib3000mc_write_word(state, 1031, 0xFFFF); 448 dib3000mc_write_word(state, 1032, 0xFFFF); 449 dib3000mc_write_word(state, 1033, 0xFFF0); 450 451 return 0; 452 } 453 454 static void dib3000mc_set_adp_cfg(struct dib3000mc_state *state, s16 qam) 455 { 456 u16 cfg[4] = { 0 },reg; 457 switch (qam) { 458 case QPSK: 459 cfg[0] = 0x099a; cfg[1] = 0x7fae; cfg[2] = 0x0333; cfg[3] = 0x7ff0; 460 break; 461 case QAM_16: 462 cfg[0] = 0x023d; cfg[1] = 0x7fdf; cfg[2] = 0x00a4; cfg[3] = 0x7ff0; 463 break; 464 case QAM_64: 465 cfg[0] = 0x0148; cfg[1] = 0x7ff0; cfg[2] = 0x00a4; cfg[3] = 0x7ff8; 466 break; 467 } 468 for (reg = 129; reg < 133; reg++) 469 dib3000mc_write_word(state, reg, cfg[reg - 129]); 470 } 471 472 static void dib3000mc_set_channel_cfg(struct dib3000mc_state *state, 473 struct dtv_frontend_properties *ch, u16 seq) 474 { 475 u16 value; 476 u32 bw = BANDWIDTH_TO_KHZ(ch->bandwidth_hz); 477 478 dib3000mc_set_bandwidth(state, bw); 479 dib3000mc_set_timing(state, ch->transmission_mode, bw, 0); 480 481 #if 1 482 dib3000mc_write_word(state, 100, (16 << 6) + 9); 483 #else 484 if (boost) 485 dib3000mc_write_word(state, 100, (11 << 6) + 6); 486 else 487 dib3000mc_write_word(state, 100, (16 << 6) + 9); 488 #endif 489 490 dib3000mc_write_word(state, 1027, 0x0800); 491 dib3000mc_write_word(state, 1027, 0x0000); 492 493 //Default cfg isi offset adp 494 dib3000mc_write_word(state, 26, 0x6680); 495 dib3000mc_write_word(state, 29, 0x1273); 496 dib3000mc_write_word(state, 33, 5); 497 dib3000mc_set_adp_cfg(state, QAM_16); 498 dib3000mc_write_word(state, 133, 15564); 499 500 dib3000mc_write_word(state, 12 , 0x0); 501 dib3000mc_write_word(state, 13 , 0x3e8); 502 dib3000mc_write_word(state, 14 , 0x0); 503 dib3000mc_write_word(state, 15 , 0x3f2); 504 505 dib3000mc_write_word(state, 93,0); 506 dib3000mc_write_word(state, 94,0); 507 dib3000mc_write_word(state, 95,0); 508 dib3000mc_write_word(state, 96,0); 509 dib3000mc_write_word(state, 97,0); 510 dib3000mc_write_word(state, 98,0); 511 512 dib3000mc_set_impulse_noise(state, 0, ch->transmission_mode); 513 514 value = 0; 515 switch (ch->transmission_mode) { 516 case TRANSMISSION_MODE_2K: value |= (0 << 7); break; 517 default: 518 case TRANSMISSION_MODE_8K: value |= (1 << 7); break; 519 } 520 switch (ch->guard_interval) { 521 case GUARD_INTERVAL_1_32: value |= (0 << 5); break; 522 case GUARD_INTERVAL_1_16: value |= (1 << 5); break; 523 case GUARD_INTERVAL_1_4: value |= (3 << 5); break; 524 default: 525 case GUARD_INTERVAL_1_8: value |= (2 << 5); break; 526 } 527 switch (ch->modulation) { 528 case QPSK: value |= (0 << 3); break; 529 case QAM_16: value |= (1 << 3); break; 530 default: 531 case QAM_64: value |= (2 << 3); break; 532 } 533 switch (HIERARCHY_1) { 534 case HIERARCHY_2: value |= 2; break; 535 case HIERARCHY_4: value |= 4; break; 536 default: 537 case HIERARCHY_1: value |= 1; break; 538 } 539 dib3000mc_write_word(state, 0, value); 540 dib3000mc_write_word(state, 5, (1 << 8) | ((seq & 0xf) << 4)); 541 542 value = 0; 543 if (ch->hierarchy == 1) 544 value |= (1 << 4); 545 if (1 == 1) 546 value |= 1; 547 switch ((ch->hierarchy == 0 || 1 == 1) ? ch->code_rate_HP : ch->code_rate_LP) { 548 case FEC_2_3: value |= (2 << 1); break; 549 case FEC_3_4: value |= (3 << 1); break; 550 case FEC_5_6: value |= (5 << 1); break; 551 case FEC_7_8: value |= (7 << 1); break; 552 default: 553 case FEC_1_2: value |= (1 << 1); break; 554 } 555 dib3000mc_write_word(state, 181, value); 556 557 // diversity synchro delay add 50% SFN margin 558 switch (ch->transmission_mode) { 559 case TRANSMISSION_MODE_8K: value = 256; break; 560 case TRANSMISSION_MODE_2K: 561 default: value = 64; break; 562 } 563 switch (ch->guard_interval) { 564 case GUARD_INTERVAL_1_16: value *= 2; break; 565 case GUARD_INTERVAL_1_8: value *= 4; break; 566 case GUARD_INTERVAL_1_4: value *= 8; break; 567 default: 568 case GUARD_INTERVAL_1_32: value *= 1; break; 569 } 570 value <<= 4; 571 value |= dib3000mc_read_word(state, 180) & 0x000f; 572 dib3000mc_write_word(state, 180, value); 573 574 // restart demod 575 value = dib3000mc_read_word(state, 0); 576 dib3000mc_write_word(state, 0, value | (1 << 9)); 577 dib3000mc_write_word(state, 0, value); 578 579 msleep(30); 580 581 dib3000mc_set_impulse_noise(state, state->cfg->impulse_noise_mode, ch->transmission_mode); 582 } 583 584 static int dib3000mc_autosearch_start(struct dvb_frontend *demod) 585 { 586 struct dtv_frontend_properties *chan = &demod->dtv_property_cache; 587 struct dib3000mc_state *state = demod->demodulator_priv; 588 u16 reg; 589 // u32 val; 590 struct dtv_frontend_properties schan; 591 592 schan = *chan; 593 594 /* TODO what is that ? */ 595 596 /* a channel for autosearch */ 597 schan.transmission_mode = TRANSMISSION_MODE_8K; 598 schan.guard_interval = GUARD_INTERVAL_1_32; 599 schan.modulation = QAM_64; 600 schan.code_rate_HP = FEC_2_3; 601 schan.code_rate_LP = FEC_2_3; 602 schan.hierarchy = 0; 603 604 dib3000mc_set_channel_cfg(state, &schan, 11); 605 606 reg = dib3000mc_read_word(state, 0); 607 dib3000mc_write_word(state, 0, reg | (1 << 8)); 608 dib3000mc_read_word(state, 511); 609 dib3000mc_write_word(state, 0, reg); 610 611 return 0; 612 } 613 614 static int dib3000mc_autosearch_is_irq(struct dvb_frontend *demod) 615 { 616 struct dib3000mc_state *state = demod->demodulator_priv; 617 u16 irq_pending = dib3000mc_read_word(state, 511); 618 619 if (irq_pending & 0x1) // failed 620 return 1; 621 622 if (irq_pending & 0x2) // succeeded 623 return 2; 624 625 return 0; // still pending 626 } 627 628 static int dib3000mc_tune(struct dvb_frontend *demod) 629 { 630 struct dtv_frontend_properties *ch = &demod->dtv_property_cache; 631 struct dib3000mc_state *state = demod->demodulator_priv; 632 633 // ** configure demod ** 634 dib3000mc_set_channel_cfg(state, ch, 0); 635 636 // activates isi 637 if (state->sfn_workaround_active) { 638 dprintk("SFN workaround is active\n"); 639 dib3000mc_write_word(state, 29, 0x1273); 640 dib3000mc_write_word(state, 108, 0x4000); // P_pha3_force_pha_shift 641 } else { 642 dib3000mc_write_word(state, 29, 0x1073); 643 dib3000mc_write_word(state, 108, 0x0000); // P_pha3_force_pha_shift 644 } 645 646 dib3000mc_set_adp_cfg(state, (u8)ch->modulation); 647 if (ch->transmission_mode == TRANSMISSION_MODE_8K) { 648 dib3000mc_write_word(state, 26, 38528); 649 dib3000mc_write_word(state, 33, 8); 650 } else { 651 dib3000mc_write_word(state, 26, 30336); 652 dib3000mc_write_word(state, 33, 6); 653 } 654 655 if (dib3000mc_read_word(state, 509) & 0x80) 656 dib3000mc_set_timing(state, ch->transmission_mode, 657 BANDWIDTH_TO_KHZ(ch->bandwidth_hz), 1); 658 659 return 0; 660 } 661 662 struct i2c_adapter * dib3000mc_get_tuner_i2c_master(struct dvb_frontend *demod, int gating) 663 { 664 struct dib3000mc_state *st = demod->demodulator_priv; 665 return dibx000_get_i2c_adapter(&st->i2c_master, DIBX000_I2C_INTERFACE_TUNER, gating); 666 } 667 668 EXPORT_SYMBOL(dib3000mc_get_tuner_i2c_master); 669 670 static int dib3000mc_get_frontend(struct dvb_frontend* fe, 671 struct dtv_frontend_properties *fep) 672 { 673 struct dib3000mc_state *state = fe->demodulator_priv; 674 u16 tps = dib3000mc_read_word(state,458); 675 676 fep->inversion = INVERSION_AUTO; 677 678 fep->bandwidth_hz = state->current_bandwidth; 679 680 switch ((tps >> 8) & 0x1) { 681 case 0: fep->transmission_mode = TRANSMISSION_MODE_2K; break; 682 case 1: fep->transmission_mode = TRANSMISSION_MODE_8K; break; 683 } 684 685 switch (tps & 0x3) { 686 case 0: fep->guard_interval = GUARD_INTERVAL_1_32; break; 687 case 1: fep->guard_interval = GUARD_INTERVAL_1_16; break; 688 case 2: fep->guard_interval = GUARD_INTERVAL_1_8; break; 689 case 3: fep->guard_interval = GUARD_INTERVAL_1_4; break; 690 } 691 692 switch ((tps >> 13) & 0x3) { 693 case 0: fep->modulation = QPSK; break; 694 case 1: fep->modulation = QAM_16; break; 695 case 2: 696 default: fep->modulation = QAM_64; break; 697 } 698 699 /* as long as the frontend_param structure is fixed for hierarchical transmission I refuse to use it */ 700 /* (tps >> 12) & 0x1 == hrch is used, (tps >> 9) & 0x7 == alpha */ 701 702 fep->hierarchy = HIERARCHY_NONE; 703 switch ((tps >> 5) & 0x7) { 704 case 1: fep->code_rate_HP = FEC_1_2; break; 705 case 2: fep->code_rate_HP = FEC_2_3; break; 706 case 3: fep->code_rate_HP = FEC_3_4; break; 707 case 5: fep->code_rate_HP = FEC_5_6; break; 708 case 7: 709 default: fep->code_rate_HP = FEC_7_8; break; 710 711 } 712 713 switch ((tps >> 2) & 0x7) { 714 case 1: fep->code_rate_LP = FEC_1_2; break; 715 case 2: fep->code_rate_LP = FEC_2_3; break; 716 case 3: fep->code_rate_LP = FEC_3_4; break; 717 case 5: fep->code_rate_LP = FEC_5_6; break; 718 case 7: 719 default: fep->code_rate_LP = FEC_7_8; break; 720 } 721 722 return 0; 723 } 724 725 static int dib3000mc_set_frontend(struct dvb_frontend *fe) 726 { 727 struct dtv_frontend_properties *fep = &fe->dtv_property_cache; 728 struct dib3000mc_state *state = fe->demodulator_priv; 729 int ret; 730 731 dib3000mc_set_output_mode(state, OUTMODE_HIGH_Z); 732 733 state->current_bandwidth = fep->bandwidth_hz; 734 dib3000mc_set_bandwidth(state, BANDWIDTH_TO_KHZ(fep->bandwidth_hz)); 735 736 /* maybe the parameter has been changed */ 737 state->sfn_workaround_active = buggy_sfn_workaround; 738 739 if (fe->ops.tuner_ops.set_params) { 740 fe->ops.tuner_ops.set_params(fe); 741 msleep(100); 742 } 743 744 if (fep->transmission_mode == TRANSMISSION_MODE_AUTO || 745 fep->guard_interval == GUARD_INTERVAL_AUTO || 746 fep->modulation == QAM_AUTO || 747 fep->code_rate_HP == FEC_AUTO) { 748 int i = 1000, found; 749 750 dib3000mc_autosearch_start(fe); 751 do { 752 msleep(1); 753 found = dib3000mc_autosearch_is_irq(fe); 754 } while (found == 0 && i--); 755 756 dprintk("autosearch returns: %d\n",found); 757 if (found == 0 || found == 1) 758 return 0; // no channel found 759 760 dib3000mc_get_frontend(fe, fep); 761 } 762 763 ret = dib3000mc_tune(fe); 764 765 /* make this a config parameter */ 766 dib3000mc_set_output_mode(state, OUTMODE_MPEG2_FIFO); 767 return ret; 768 } 769 770 static int dib3000mc_read_status(struct dvb_frontend *fe, enum fe_status *stat) 771 { 772 struct dib3000mc_state *state = fe->demodulator_priv; 773 u16 lock = dib3000mc_read_word(state, 509); 774 775 *stat = 0; 776 777 if (lock & 0x8000) 778 *stat |= FE_HAS_SIGNAL; 779 if (lock & 0x3000) 780 *stat |= FE_HAS_CARRIER; 781 if (lock & 0x0100) 782 *stat |= FE_HAS_VITERBI; 783 if (lock & 0x0010) 784 *stat |= FE_HAS_SYNC; 785 if (lock & 0x0008) 786 *stat |= FE_HAS_LOCK; 787 788 return 0; 789 } 790 791 static int dib3000mc_read_ber(struct dvb_frontend *fe, u32 *ber) 792 { 793 struct dib3000mc_state *state = fe->demodulator_priv; 794 *ber = (dib3000mc_read_word(state, 500) << 16) | dib3000mc_read_word(state, 501); 795 return 0; 796 } 797 798 static int dib3000mc_read_unc_blocks(struct dvb_frontend *fe, u32 *unc) 799 { 800 struct dib3000mc_state *state = fe->demodulator_priv; 801 *unc = dib3000mc_read_word(state, 508); 802 return 0; 803 } 804 805 static int dib3000mc_read_signal_strength(struct dvb_frontend *fe, u16 *strength) 806 { 807 struct dib3000mc_state *state = fe->demodulator_priv; 808 u16 val = dib3000mc_read_word(state, 392); 809 *strength = 65535 - val; 810 return 0; 811 } 812 813 static int dib3000mc_read_snr(struct dvb_frontend* fe, u16 *snr) 814 { 815 *snr = 0x0000; 816 return 0; 817 } 818 819 static int dib3000mc_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) 820 { 821 tune->min_delay_ms = 1000; 822 return 0; 823 } 824 825 static void dib3000mc_release(struct dvb_frontend *fe) 826 { 827 struct dib3000mc_state *state = fe->demodulator_priv; 828 dibx000_exit_i2c_master(&state->i2c_master); 829 kfree(state); 830 } 831 832 int dib3000mc_pid_control(struct dvb_frontend *fe, int index, int pid,int onoff) 833 { 834 struct dib3000mc_state *state = fe->demodulator_priv; 835 dib3000mc_write_word(state, 212 + index, onoff ? (1 << 13) | pid : 0); 836 return 0; 837 } 838 EXPORT_SYMBOL(dib3000mc_pid_control); 839 840 int dib3000mc_pid_parse(struct dvb_frontend *fe, int onoff) 841 { 842 struct dib3000mc_state *state = fe->demodulator_priv; 843 u16 tmp = dib3000mc_read_word(state, 206) & ~(1 << 4); 844 tmp |= (onoff << 4); 845 return dib3000mc_write_word(state, 206, tmp); 846 } 847 EXPORT_SYMBOL(dib3000mc_pid_parse); 848 849 void dib3000mc_set_config(struct dvb_frontend *fe, struct dib3000mc_config *cfg) 850 { 851 struct dib3000mc_state *state = fe->demodulator_priv; 852 state->cfg = cfg; 853 } 854 EXPORT_SYMBOL(dib3000mc_set_config); 855 856 int dib3000mc_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 default_addr, struct dib3000mc_config cfg[]) 857 { 858 struct dib3000mc_state *dmcst; 859 int k; 860 u8 new_addr; 861 862 static const u8 DIB3000MC_I2C_ADDRESS[] = { 20, 22, 24, 26 }; 863 864 dmcst = kzalloc(sizeof(struct dib3000mc_state), GFP_KERNEL); 865 if (dmcst == NULL) 866 return -ENOMEM; 867 868 dmcst->i2c_adap = i2c; 869 870 for (k = no_of_demods-1; k >= 0; k--) { 871 dmcst->cfg = &cfg[k]; 872 873 /* designated i2c address */ 874 new_addr = DIB3000MC_I2C_ADDRESS[k]; 875 dmcst->i2c_addr = new_addr; 876 if (dib3000mc_identify(dmcst) != 0) { 877 dmcst->i2c_addr = default_addr; 878 if (dib3000mc_identify(dmcst) != 0) { 879 dprintk("-E- DiB3000P/MC #%d: not identified\n", k); 880 kfree(dmcst); 881 return -ENODEV; 882 } 883 } 884 885 dib3000mc_set_output_mode(dmcst, OUTMODE_MPEG2_PAR_CONT_CLK); 886 887 // set new i2c address and force divstr (Bit 1) to value 0 (Bit 0) 888 dib3000mc_write_word(dmcst, 1024, (new_addr << 3) | 0x1); 889 dmcst->i2c_addr = new_addr; 890 } 891 892 for (k = 0; k < no_of_demods; k++) { 893 dmcst->cfg = &cfg[k]; 894 dmcst->i2c_addr = DIB3000MC_I2C_ADDRESS[k]; 895 896 dib3000mc_write_word(dmcst, 1024, dmcst->i2c_addr << 3); 897 898 /* turn off data output */ 899 dib3000mc_set_output_mode(dmcst, OUTMODE_HIGH_Z); 900 } 901 902 kfree(dmcst); 903 return 0; 904 } 905 EXPORT_SYMBOL(dib3000mc_i2c_enumeration); 906 907 static const struct dvb_frontend_ops dib3000mc_ops; 908 909 struct dvb_frontend * dib3000mc_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib3000mc_config *cfg) 910 { 911 struct dvb_frontend *demod; 912 struct dib3000mc_state *st; 913 st = kzalloc(sizeof(struct dib3000mc_state), GFP_KERNEL); 914 if (st == NULL) 915 return NULL; 916 917 st->cfg = cfg; 918 st->i2c_adap = i2c_adap; 919 st->i2c_addr = i2c_addr; 920 921 demod = &st->demod; 922 demod->demodulator_priv = st; 923 memcpy(&st->demod.ops, &dib3000mc_ops, sizeof(struct dvb_frontend_ops)); 924 925 if (dib3000mc_identify(st) != 0) 926 goto error; 927 928 dibx000_init_i2c_master(&st->i2c_master, DIB3000MC, st->i2c_adap, st->i2c_addr); 929 930 dib3000mc_write_word(st, 1037, 0x3130); 931 932 return demod; 933 934 error: 935 kfree(st); 936 return NULL; 937 } 938 EXPORT_SYMBOL(dib3000mc_attach); 939 940 static const struct dvb_frontend_ops dib3000mc_ops = { 941 .delsys = { SYS_DVBT }, 942 .info = { 943 .name = "DiBcom 3000MC/P", 944 .frequency_min_hz = 44250 * kHz, 945 .frequency_max_hz = 867250 * kHz, 946 .frequency_stepsize_hz = 62500, 947 .caps = FE_CAN_INVERSION_AUTO | 948 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 949 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 950 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | 951 FE_CAN_TRANSMISSION_MODE_AUTO | 952 FE_CAN_GUARD_INTERVAL_AUTO | 953 FE_CAN_RECOVER | 954 FE_CAN_HIERARCHY_AUTO, 955 }, 956 957 .release = dib3000mc_release, 958 959 .init = dib3000mc_init, 960 .sleep = dib3000mc_sleep, 961 962 .set_frontend = dib3000mc_set_frontend, 963 .get_tune_settings = dib3000mc_fe_get_tune_settings, 964 .get_frontend = dib3000mc_get_frontend, 965 966 .read_status = dib3000mc_read_status, 967 .read_ber = dib3000mc_read_ber, 968 .read_signal_strength = dib3000mc_read_signal_strength, 969 .read_snr = dib3000mc_read_snr, 970 .read_ucblocks = dib3000mc_read_unc_blocks, 971 }; 972 973 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>"); 974 MODULE_DESCRIPTION("Driver for the DiBcom 3000MC/P COFDM demodulator"); 975 MODULE_LICENSE("GPL"); 976