1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /**************************************************************** 3 4 Siano Mobile Silicon, Inc. 5 MDTV receiver kernel modules. 6 Copyright (C) 2006-2008, Uri Shkolnik 7 8 9 ****************************************************************/ 10 11 #include "smscoreapi.h" 12 13 #include <linux/module.h> 14 #include <linux/slab.h> 15 #include <linux/init.h> 16 #include <asm/div64.h> 17 18 #include <media/dmxdev.h> 19 #include <media/dvbdev.h> 20 #include <media/dvb_demux.h> 21 #include <media/dvb_frontend.h> 22 23 #include "sms-cards.h" 24 25 #include "smsdvb.h" 26 27 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 28 29 static LIST_HEAD(g_smsdvb_clients); 30 static DEFINE_MUTEX(g_smsdvb_clientslock); 31 32 static u32 sms_to_guard_interval_table[] = { 33 [0] = GUARD_INTERVAL_1_32, 34 [1] = GUARD_INTERVAL_1_16, 35 [2] = GUARD_INTERVAL_1_8, 36 [3] = GUARD_INTERVAL_1_4, 37 }; 38 39 static u32 sms_to_code_rate_table[] = { 40 [0] = FEC_1_2, 41 [1] = FEC_2_3, 42 [2] = FEC_3_4, 43 [3] = FEC_5_6, 44 [4] = FEC_7_8, 45 }; 46 47 48 static u32 sms_to_hierarchy_table[] = { 49 [0] = HIERARCHY_NONE, 50 [1] = HIERARCHY_1, 51 [2] = HIERARCHY_2, 52 [3] = HIERARCHY_4, 53 }; 54 55 static u32 sms_to_modulation_table[] = { 56 [0] = QPSK, 57 [1] = QAM_16, 58 [2] = QAM_64, 59 [3] = DQPSK, 60 }; 61 62 63 /* Events that may come from DVB v3 adapter */ 64 static void sms_board_dvb3_event(struct smsdvb_client_t *client, 65 enum SMS_DVB3_EVENTS event) { 66 67 struct smscore_device_t *coredev = client->coredev; 68 switch (event) { 69 case DVB3_EVENT_INIT: 70 pr_debug("DVB3_EVENT_INIT\n"); 71 sms_board_event(coredev, BOARD_EVENT_BIND); 72 break; 73 case DVB3_EVENT_SLEEP: 74 pr_debug("DVB3_EVENT_SLEEP\n"); 75 sms_board_event(coredev, BOARD_EVENT_POWER_SUSPEND); 76 break; 77 case DVB3_EVENT_HOTPLUG: 78 pr_debug("DVB3_EVENT_HOTPLUG\n"); 79 sms_board_event(coredev, BOARD_EVENT_POWER_INIT); 80 break; 81 case DVB3_EVENT_FE_LOCK: 82 if (client->event_fe_state != DVB3_EVENT_FE_LOCK) { 83 client->event_fe_state = DVB3_EVENT_FE_LOCK; 84 pr_debug("DVB3_EVENT_FE_LOCK\n"); 85 sms_board_event(coredev, BOARD_EVENT_FE_LOCK); 86 } 87 break; 88 case DVB3_EVENT_FE_UNLOCK: 89 if (client->event_fe_state != DVB3_EVENT_FE_UNLOCK) { 90 client->event_fe_state = DVB3_EVENT_FE_UNLOCK; 91 pr_debug("DVB3_EVENT_FE_UNLOCK\n"); 92 sms_board_event(coredev, BOARD_EVENT_FE_UNLOCK); 93 } 94 break; 95 case DVB3_EVENT_UNC_OK: 96 if (client->event_unc_state != DVB3_EVENT_UNC_OK) { 97 client->event_unc_state = DVB3_EVENT_UNC_OK; 98 pr_debug("DVB3_EVENT_UNC_OK\n"); 99 sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_OK); 100 } 101 break; 102 case DVB3_EVENT_UNC_ERR: 103 if (client->event_unc_state != DVB3_EVENT_UNC_ERR) { 104 client->event_unc_state = DVB3_EVENT_UNC_ERR; 105 pr_debug("DVB3_EVENT_UNC_ERR\n"); 106 sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_ERRORS); 107 } 108 break; 109 110 default: 111 pr_err("Unknown dvb3 api event\n"); 112 break; 113 } 114 } 115 116 static void smsdvb_stats_not_ready(struct dvb_frontend *fe) 117 { 118 struct smsdvb_client_t *client = 119 container_of(fe, struct smsdvb_client_t, frontend); 120 struct smscore_device_t *coredev = client->coredev; 121 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 122 int i, n_layers; 123 124 switch (smscore_get_device_mode(coredev)) { 125 case DEVICE_MODE_ISDBT: 126 case DEVICE_MODE_ISDBT_BDA: 127 n_layers = 4; 128 break; 129 default: 130 n_layers = 1; 131 } 132 133 /* Global stats */ 134 c->strength.len = 1; 135 c->cnr.len = 1; 136 c->strength.stat[0].scale = FE_SCALE_DECIBEL; 137 c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 138 139 /* Per-layer stats */ 140 c->post_bit_error.len = n_layers; 141 c->post_bit_count.len = n_layers; 142 c->block_error.len = n_layers; 143 c->block_count.len = n_layers; 144 145 /* 146 * Put all of them at FE_SCALE_NOT_AVAILABLE. They're dynamically 147 * changed when the stats become available. 148 */ 149 for (i = 0; i < n_layers; i++) { 150 c->post_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE; 151 c->post_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE; 152 c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE; 153 c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE; 154 } 155 } 156 157 static inline int sms_to_mode(u32 mode) 158 { 159 switch (mode) { 160 case 2: 161 return TRANSMISSION_MODE_2K; 162 case 4: 163 return TRANSMISSION_MODE_4K; 164 case 8: 165 return TRANSMISSION_MODE_8K; 166 } 167 return TRANSMISSION_MODE_AUTO; 168 } 169 170 static inline int sms_to_isdbt_mode(u32 mode) 171 { 172 switch (mode) { 173 case 1: 174 return TRANSMISSION_MODE_2K; 175 case 2: 176 return TRANSMISSION_MODE_4K; 177 case 3: 178 return TRANSMISSION_MODE_8K; 179 } 180 return TRANSMISSION_MODE_AUTO; 181 } 182 183 static inline int sms_to_isdbt_guard_interval(u32 interval) 184 { 185 switch (interval) { 186 case 4: 187 return GUARD_INTERVAL_1_4; 188 case 8: 189 return GUARD_INTERVAL_1_8; 190 case 16: 191 return GUARD_INTERVAL_1_16; 192 case 32: 193 return GUARD_INTERVAL_1_32; 194 } 195 return GUARD_INTERVAL_AUTO; 196 } 197 198 static inline int sms_to_status(u32 is_demod_locked, u32 is_rf_locked) 199 { 200 if (is_demod_locked) 201 return FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | 202 FE_HAS_SYNC | FE_HAS_LOCK; 203 204 if (is_rf_locked) 205 return FE_HAS_SIGNAL | FE_HAS_CARRIER; 206 207 return 0; 208 } 209 210 static inline u32 sms_to_bw(u32 value) 211 { 212 return value * 1000000; 213 } 214 215 #define convert_from_table(value, table, defval) ({ \ 216 u32 __ret; \ 217 if (value < ARRAY_SIZE(table)) \ 218 __ret = table[value]; \ 219 else \ 220 __ret = defval; \ 221 __ret; \ 222 }) 223 224 #define sms_to_guard_interval(value) \ 225 convert_from_table(value, sms_to_guard_interval_table, \ 226 GUARD_INTERVAL_AUTO); 227 228 #define sms_to_code_rate(value) \ 229 convert_from_table(value, sms_to_code_rate_table, \ 230 FEC_NONE); 231 232 #define sms_to_hierarchy(value) \ 233 convert_from_table(value, sms_to_hierarchy_table, \ 234 FEC_NONE); 235 236 #define sms_to_modulation(value) \ 237 convert_from_table(value, sms_to_modulation_table, \ 238 FEC_NONE); 239 240 static void smsdvb_update_tx_params(struct smsdvb_client_t *client, 241 struct sms_tx_stats *p) 242 { 243 struct dvb_frontend *fe = &client->frontend; 244 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 245 246 c->frequency = p->frequency; 247 client->fe_status = sms_to_status(p->is_demod_locked, 0); 248 c->bandwidth_hz = sms_to_bw(p->bandwidth); 249 c->transmission_mode = sms_to_mode(p->transmission_mode); 250 c->guard_interval = sms_to_guard_interval(p->guard_interval); 251 c->code_rate_HP = sms_to_code_rate(p->code_rate); 252 c->code_rate_LP = sms_to_code_rate(p->lp_code_rate); 253 c->hierarchy = sms_to_hierarchy(p->hierarchy); 254 c->modulation = sms_to_modulation(p->constellation); 255 } 256 257 static void smsdvb_update_per_slices(struct smsdvb_client_t *client, 258 struct RECEPTION_STATISTICS_PER_SLICES_S *p) 259 { 260 struct dvb_frontend *fe = &client->frontend; 261 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 262 u64 tmp; 263 264 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked); 265 c->modulation = sms_to_modulation(p->constellation); 266 267 /* signal Strength, in DBm */ 268 c->strength.stat[0].uvalue = p->in_band_power * 1000; 269 270 /* Carrier to noise ratio, in DB */ 271 c->cnr.stat[0].svalue = p->snr * 1000; 272 273 /* PER/BER requires demod lock */ 274 if (!p->is_demod_locked) 275 return; 276 277 /* TS PER */ 278 client->last_per = c->block_error.stat[0].uvalue; 279 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 280 c->block_count.stat[0].scale = FE_SCALE_COUNTER; 281 c->block_error.stat[0].uvalue += p->ets_packets; 282 c->block_count.stat[0].uvalue += p->ets_packets + p->ts_packets; 283 284 /* ber */ 285 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; 286 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; 287 c->post_bit_error.stat[0].uvalue += p->ber_error_count; 288 c->post_bit_count.stat[0].uvalue += p->ber_bit_count; 289 290 /* Legacy PER/BER */ 291 tmp = p->ets_packets * 65535ULL; 292 if (p->ts_packets + p->ets_packets) 293 do_div(tmp, p->ts_packets + p->ets_packets); 294 client->legacy_per = tmp; 295 } 296 297 static void smsdvb_update_dvb_stats(struct smsdvb_client_t *client, 298 struct sms_stats *p) 299 { 300 struct dvb_frontend *fe = &client->frontend; 301 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 302 303 if (client->prt_dvb_stats) 304 client->prt_dvb_stats(client->debug_data, p); 305 306 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked); 307 308 /* Update DVB modulation parameters */ 309 c->frequency = p->frequency; 310 client->fe_status = sms_to_status(p->is_demod_locked, 0); 311 c->bandwidth_hz = sms_to_bw(p->bandwidth); 312 c->transmission_mode = sms_to_mode(p->transmission_mode); 313 c->guard_interval = sms_to_guard_interval(p->guard_interval); 314 c->code_rate_HP = sms_to_code_rate(p->code_rate); 315 c->code_rate_LP = sms_to_code_rate(p->lp_code_rate); 316 c->hierarchy = sms_to_hierarchy(p->hierarchy); 317 c->modulation = sms_to_modulation(p->constellation); 318 319 /* update reception data */ 320 c->lna = p->is_external_lna_on ? 1 : 0; 321 322 /* Carrier to noise ratio, in DB */ 323 c->cnr.stat[0].svalue = p->SNR * 1000; 324 325 /* signal Strength, in DBm */ 326 c->strength.stat[0].uvalue = p->in_band_pwr * 1000; 327 328 /* PER/BER requires demod lock */ 329 if (!p->is_demod_locked) 330 return; 331 332 /* TS PER */ 333 client->last_per = c->block_error.stat[0].uvalue; 334 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 335 c->block_count.stat[0].scale = FE_SCALE_COUNTER; 336 c->block_error.stat[0].uvalue += p->error_ts_packets; 337 c->block_count.stat[0].uvalue += p->total_ts_packets; 338 339 /* ber */ 340 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; 341 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; 342 c->post_bit_error.stat[0].uvalue += p->ber_error_count; 343 c->post_bit_count.stat[0].uvalue += p->ber_bit_count; 344 345 /* Legacy PER/BER */ 346 client->legacy_ber = p->ber; 347 }; 348 349 static void smsdvb_update_isdbt_stats(struct smsdvb_client_t *client, 350 struct sms_isdbt_stats *p) 351 { 352 struct dvb_frontend *fe = &client->frontend; 353 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 354 struct sms_isdbt_layer_stats *lr; 355 int i, n_layers; 356 357 if (client->prt_isdb_stats) 358 client->prt_isdb_stats(client->debug_data, p); 359 360 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked); 361 362 /* 363 * Firmware 2.1 seems to report only lock status and 364 * signal strength. The signal strength indicator is at the 365 * wrong field. 366 */ 367 if (p->statistics_type == 0) { 368 c->strength.stat[0].uvalue = ((s32)p->transmission_mode) * 1000; 369 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 370 return; 371 } 372 373 /* Update ISDB-T transmission parameters */ 374 c->frequency = p->frequency; 375 c->bandwidth_hz = sms_to_bw(p->bandwidth); 376 c->transmission_mode = sms_to_isdbt_mode(p->transmission_mode); 377 c->guard_interval = sms_to_isdbt_guard_interval(p->guard_interval); 378 c->isdbt_partial_reception = p->partial_reception ? 1 : 0; 379 n_layers = p->num_of_layers; 380 if (n_layers < 1) 381 n_layers = 1; 382 if (n_layers > 3) 383 n_layers = 3; 384 c->isdbt_layer_enabled = 0; 385 386 /* update reception data */ 387 c->lna = p->is_external_lna_on ? 1 : 0; 388 389 /* Carrier to noise ratio, in DB */ 390 c->cnr.stat[0].svalue = p->SNR * 1000; 391 392 /* signal Strength, in DBm */ 393 c->strength.stat[0].uvalue = p->in_band_pwr * 1000; 394 395 /* PER/BER and per-layer stats require demod lock */ 396 if (!p->is_demod_locked) 397 return; 398 399 client->last_per = c->block_error.stat[0].uvalue; 400 401 /* Clears global counters, as the code below will sum it again */ 402 c->block_error.stat[0].uvalue = 0; 403 c->block_count.stat[0].uvalue = 0; 404 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 405 c->block_count.stat[0].scale = FE_SCALE_COUNTER; 406 c->post_bit_error.stat[0].uvalue = 0; 407 c->post_bit_count.stat[0].uvalue = 0; 408 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; 409 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; 410 411 for (i = 0; i < n_layers; i++) { 412 lr = &p->layer_info[i]; 413 414 /* Update per-layer transmission parameters */ 415 if (lr->number_of_segments > 0 && lr->number_of_segments < 13) { 416 c->isdbt_layer_enabled |= 1 << i; 417 c->layer[i].segment_count = lr->number_of_segments; 418 } else { 419 continue; 420 } 421 c->layer[i].modulation = sms_to_modulation(lr->constellation); 422 c->layer[i].fec = sms_to_code_rate(lr->code_rate); 423 424 /* Time interleaving */ 425 c->layer[i].interleaving = (u8)lr->ti_ldepth_i; 426 427 /* TS PER */ 428 c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER; 429 c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER; 430 c->block_error.stat[i + 1].uvalue += lr->error_ts_packets; 431 c->block_count.stat[i + 1].uvalue += lr->total_ts_packets; 432 433 /* Update global PER counter */ 434 c->block_error.stat[0].uvalue += lr->error_ts_packets; 435 c->block_count.stat[0].uvalue += lr->total_ts_packets; 436 437 /* BER */ 438 c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER; 439 c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER; 440 c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count; 441 c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count; 442 443 /* Update global BER counter */ 444 c->post_bit_error.stat[0].uvalue += lr->ber_error_count; 445 c->post_bit_count.stat[0].uvalue += lr->ber_bit_count; 446 } 447 } 448 449 static void smsdvb_update_isdbt_stats_ex(struct smsdvb_client_t *client, 450 struct sms_isdbt_stats_ex *p) 451 { 452 struct dvb_frontend *fe = &client->frontend; 453 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 454 struct sms_isdbt_layer_stats *lr; 455 int i, n_layers; 456 457 if (client->prt_isdb_stats_ex) 458 client->prt_isdb_stats_ex(client->debug_data, p); 459 460 /* Update ISDB-T transmission parameters */ 461 c->frequency = p->frequency; 462 client->fe_status = sms_to_status(p->is_demod_locked, 0); 463 c->bandwidth_hz = sms_to_bw(p->bandwidth); 464 c->transmission_mode = sms_to_isdbt_mode(p->transmission_mode); 465 c->guard_interval = sms_to_isdbt_guard_interval(p->guard_interval); 466 c->isdbt_partial_reception = p->partial_reception ? 1 : 0; 467 n_layers = p->num_of_layers; 468 if (n_layers < 1) 469 n_layers = 1; 470 if (n_layers > 3) 471 n_layers = 3; 472 c->isdbt_layer_enabled = 0; 473 474 /* update reception data */ 475 c->lna = p->is_external_lna_on ? 1 : 0; 476 477 /* Carrier to noise ratio, in DB */ 478 c->cnr.stat[0].svalue = p->SNR * 1000; 479 480 /* signal Strength, in DBm */ 481 c->strength.stat[0].uvalue = p->in_band_pwr * 1000; 482 483 /* PER/BER and per-layer stats require demod lock */ 484 if (!p->is_demod_locked) 485 return; 486 487 client->last_per = c->block_error.stat[0].uvalue; 488 489 /* Clears global counters, as the code below will sum it again */ 490 c->block_error.stat[0].uvalue = 0; 491 c->block_count.stat[0].uvalue = 0; 492 c->block_error.stat[0].scale = FE_SCALE_COUNTER; 493 c->block_count.stat[0].scale = FE_SCALE_COUNTER; 494 c->post_bit_error.stat[0].uvalue = 0; 495 c->post_bit_count.stat[0].uvalue = 0; 496 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; 497 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; 498 499 c->post_bit_error.len = n_layers + 1; 500 c->post_bit_count.len = n_layers + 1; 501 c->block_error.len = n_layers + 1; 502 c->block_count.len = n_layers + 1; 503 for (i = 0; i < n_layers; i++) { 504 lr = &p->layer_info[i]; 505 506 /* Update per-layer transmission parameters */ 507 if (lr->number_of_segments > 0 && lr->number_of_segments < 13) { 508 c->isdbt_layer_enabled |= 1 << i; 509 c->layer[i].segment_count = lr->number_of_segments; 510 } else { 511 continue; 512 } 513 c->layer[i].modulation = sms_to_modulation(lr->constellation); 514 c->layer[i].fec = sms_to_code_rate(lr->code_rate); 515 516 /* Time interleaving */ 517 c->layer[i].interleaving = (u8)lr->ti_ldepth_i; 518 519 /* TS PER */ 520 c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER; 521 c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER; 522 c->block_error.stat[i + 1].uvalue += lr->error_ts_packets; 523 c->block_count.stat[i + 1].uvalue += lr->total_ts_packets; 524 525 /* Update global PER counter */ 526 c->block_error.stat[0].uvalue += lr->error_ts_packets; 527 c->block_count.stat[0].uvalue += lr->total_ts_packets; 528 529 /* ber */ 530 c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER; 531 c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER; 532 c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count; 533 c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count; 534 535 /* Update global ber counter */ 536 c->post_bit_error.stat[0].uvalue += lr->ber_error_count; 537 c->post_bit_count.stat[0].uvalue += lr->ber_bit_count; 538 } 539 } 540 541 static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb) 542 { 543 struct smsdvb_client_t *client = (struct smsdvb_client_t *) context; 544 struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) (((u8 *) cb->p) 545 + cb->offset); 546 void *p = phdr + 1; 547 struct dvb_frontend *fe = &client->frontend; 548 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 549 bool is_status_update = false; 550 551 switch (phdr->msg_type) { 552 case MSG_SMS_DVBT_BDA_DATA: 553 /* 554 * Only feed data to dvb demux if are there any feed listening 555 * to it and if the device has tuned 556 */ 557 if (client->feed_users && client->has_tuned) 558 dvb_dmx_swfilter(&client->demux, p, 559 cb->size - sizeof(struct sms_msg_hdr)); 560 break; 561 562 case MSG_SMS_RF_TUNE_RES: 563 case MSG_SMS_ISDBT_TUNE_RES: 564 complete(&client->tune_done); 565 break; 566 567 case MSG_SMS_SIGNAL_DETECTED_IND: 568 client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER | 569 FE_HAS_VITERBI | FE_HAS_SYNC | 570 FE_HAS_LOCK; 571 572 is_status_update = true; 573 break; 574 575 case MSG_SMS_NO_SIGNAL_IND: 576 client->fe_status = 0; 577 578 is_status_update = true; 579 break; 580 581 case MSG_SMS_TRANSMISSION_IND: 582 smsdvb_update_tx_params(client, p); 583 584 is_status_update = true; 585 break; 586 587 case MSG_SMS_HO_PER_SLICES_IND: 588 smsdvb_update_per_slices(client, p); 589 590 is_status_update = true; 591 break; 592 593 case MSG_SMS_GET_STATISTICS_RES: 594 switch (smscore_get_device_mode(client->coredev)) { 595 case DEVICE_MODE_ISDBT: 596 case DEVICE_MODE_ISDBT_BDA: 597 smsdvb_update_isdbt_stats(client, p); 598 break; 599 default: 600 /* Skip sms_msg_statistics_info:request_result field */ 601 smsdvb_update_dvb_stats(client, p + sizeof(u32)); 602 } 603 604 is_status_update = true; 605 break; 606 607 /* Only for ISDB-T */ 608 case MSG_SMS_GET_STATISTICS_EX_RES: 609 /* Skip sms_msg_statistics_info:request_result field? */ 610 smsdvb_update_isdbt_stats_ex(client, p + sizeof(u32)); 611 is_status_update = true; 612 break; 613 default: 614 pr_debug("message not handled\n"); 615 } 616 smscore_putbuffer(client->coredev, cb); 617 618 if (is_status_update) { 619 if (client->fe_status & FE_HAS_LOCK) { 620 sms_board_dvb3_event(client, DVB3_EVENT_FE_LOCK); 621 if (client->last_per == c->block_error.stat[0].uvalue) 622 sms_board_dvb3_event(client, DVB3_EVENT_UNC_OK); 623 else 624 sms_board_dvb3_event(client, DVB3_EVENT_UNC_ERR); 625 client->has_tuned = true; 626 } else { 627 smsdvb_stats_not_ready(fe); 628 client->has_tuned = false; 629 sms_board_dvb3_event(client, DVB3_EVENT_FE_UNLOCK); 630 } 631 complete(&client->stats_done); 632 } 633 634 return 0; 635 } 636 637 static void smsdvb_media_device_unregister(struct smsdvb_client_t *client) 638 { 639 #ifdef CONFIG_MEDIA_CONTROLLER_DVB 640 struct smscore_device_t *coredev = client->coredev; 641 642 if (!coredev->media_dev) 643 return; 644 media_device_unregister(coredev->media_dev); 645 media_device_cleanup(coredev->media_dev); 646 kfree(coredev->media_dev); 647 coredev->media_dev = NULL; 648 #endif 649 } 650 651 static void smsdvb_unregister_client(struct smsdvb_client_t *client) 652 { 653 /* must be called under clientslock */ 654 655 list_del(&client->entry); 656 657 smsdvb_debugfs_release(client); 658 smscore_unregister_client(client->smsclient); 659 dvb_unregister_frontend(&client->frontend); 660 dvb_dmxdev_release(&client->dmxdev); 661 dvb_dmx_release(&client->demux); 662 smsdvb_media_device_unregister(client); 663 dvb_unregister_adapter(&client->adapter); 664 kfree(client); 665 } 666 667 static void smsdvb_onremove(void *context) 668 { 669 mutex_lock(&g_smsdvb_clientslock); 670 671 smsdvb_unregister_client((struct smsdvb_client_t *) context); 672 673 mutex_unlock(&g_smsdvb_clientslock); 674 } 675 676 static int smsdvb_start_feed(struct dvb_demux_feed *feed) 677 { 678 struct smsdvb_client_t *client = 679 container_of(feed->demux, struct smsdvb_client_t, demux); 680 struct sms_msg_data pid_msg; 681 682 pr_debug("add pid %d(%x)\n", 683 feed->pid, feed->pid); 684 685 client->feed_users++; 686 687 pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID; 688 pid_msg.x_msg_header.msg_dst_id = HIF_TASK; 689 pid_msg.x_msg_header.msg_flags = 0; 690 pid_msg.x_msg_header.msg_type = MSG_SMS_ADD_PID_FILTER_REQ; 691 pid_msg.x_msg_header.msg_length = sizeof(pid_msg); 692 pid_msg.msg_data[0] = feed->pid; 693 694 return smsclient_sendrequest(client->smsclient, 695 &pid_msg, sizeof(pid_msg)); 696 } 697 698 static int smsdvb_stop_feed(struct dvb_demux_feed *feed) 699 { 700 struct smsdvb_client_t *client = 701 container_of(feed->demux, struct smsdvb_client_t, demux); 702 struct sms_msg_data pid_msg; 703 704 pr_debug("remove pid %d(%x)\n", 705 feed->pid, feed->pid); 706 707 client->feed_users--; 708 709 pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID; 710 pid_msg.x_msg_header.msg_dst_id = HIF_TASK; 711 pid_msg.x_msg_header.msg_flags = 0; 712 pid_msg.x_msg_header.msg_type = MSG_SMS_REMOVE_PID_FILTER_REQ; 713 pid_msg.x_msg_header.msg_length = sizeof(pid_msg); 714 pid_msg.msg_data[0] = feed->pid; 715 716 return smsclient_sendrequest(client->smsclient, 717 &pid_msg, sizeof(pid_msg)); 718 } 719 720 static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client, 721 void *buffer, size_t size, 722 struct completion *completion) 723 { 724 int rc; 725 726 rc = smsclient_sendrequest(client->smsclient, buffer, size); 727 if (rc < 0) 728 return rc; 729 730 return wait_for_completion_timeout(completion, 731 msecs_to_jiffies(2000)) ? 732 0 : -ETIME; 733 } 734 735 static int smsdvb_send_statistics_request(struct smsdvb_client_t *client) 736 { 737 int rc; 738 struct sms_msg_hdr msg; 739 740 /* Don't request stats too fast */ 741 if (client->get_stats_jiffies && 742 (!time_after(jiffies, client->get_stats_jiffies))) 743 return 0; 744 client->get_stats_jiffies = jiffies + msecs_to_jiffies(100); 745 746 msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID; 747 msg.msg_dst_id = HIF_TASK; 748 msg.msg_flags = 0; 749 msg.msg_length = sizeof(msg); 750 751 switch (smscore_get_device_mode(client->coredev)) { 752 case DEVICE_MODE_ISDBT: 753 case DEVICE_MODE_ISDBT_BDA: 754 /* 755 * Check for firmware version, to avoid breaking for old cards 756 */ 757 if (client->coredev->fw_version >= 0x800) 758 msg.msg_type = MSG_SMS_GET_STATISTICS_EX_REQ; 759 else 760 msg.msg_type = MSG_SMS_GET_STATISTICS_REQ; 761 break; 762 default: 763 msg.msg_type = MSG_SMS_GET_STATISTICS_REQ; 764 } 765 766 rc = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg), 767 &client->stats_done); 768 769 return rc; 770 } 771 772 static inline int led_feedback(struct smsdvb_client_t *client) 773 { 774 if (!(client->fe_status & FE_HAS_LOCK)) 775 return sms_board_led_feedback(client->coredev, SMS_LED_OFF); 776 777 return sms_board_led_feedback(client->coredev, 778 (client->legacy_ber == 0) ? 779 SMS_LED_HI : SMS_LED_LO); 780 } 781 782 static int smsdvb_read_status(struct dvb_frontend *fe, enum fe_status *stat) 783 { 784 int rc; 785 struct smsdvb_client_t *client; 786 client = container_of(fe, struct smsdvb_client_t, frontend); 787 788 rc = smsdvb_send_statistics_request(client); 789 790 *stat = client->fe_status; 791 792 led_feedback(client); 793 794 return rc; 795 } 796 797 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber) 798 { 799 int rc; 800 struct smsdvb_client_t *client; 801 802 client = container_of(fe, struct smsdvb_client_t, frontend); 803 804 rc = smsdvb_send_statistics_request(client); 805 806 *ber = client->legacy_ber; 807 808 led_feedback(client); 809 810 return rc; 811 } 812 813 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength) 814 { 815 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 816 int rc; 817 s32 power = (s32) c->strength.stat[0].uvalue; 818 struct smsdvb_client_t *client; 819 820 client = container_of(fe, struct smsdvb_client_t, frontend); 821 822 rc = smsdvb_send_statistics_request(client); 823 824 if (power < -95) 825 *strength = 0; 826 else if (power > -29) 827 *strength = 65535; 828 else 829 *strength = (power + 95) * 65535 / 66; 830 831 led_feedback(client); 832 833 return rc; 834 } 835 836 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr) 837 { 838 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 839 int rc; 840 struct smsdvb_client_t *client; 841 842 client = container_of(fe, struct smsdvb_client_t, frontend); 843 844 rc = smsdvb_send_statistics_request(client); 845 846 /* Preferred scale for SNR with legacy API: 0.1 dB */ 847 *snr = ((u32)c->cnr.stat[0].svalue) / 100; 848 849 led_feedback(client); 850 851 return rc; 852 } 853 854 static int smsdvb_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) 855 { 856 int rc; 857 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 858 struct smsdvb_client_t *client; 859 860 client = container_of(fe, struct smsdvb_client_t, frontend); 861 862 rc = smsdvb_send_statistics_request(client); 863 864 *ucblocks = c->block_error.stat[0].uvalue; 865 866 led_feedback(client); 867 868 return rc; 869 } 870 871 static int smsdvb_get_tune_settings(struct dvb_frontend *fe, 872 struct dvb_frontend_tune_settings *tune) 873 { 874 pr_debug("\n"); 875 876 tune->min_delay_ms = 400; 877 tune->step_size = 250000; 878 tune->max_drift = 0; 879 return 0; 880 } 881 882 static int smsdvb_dvbt_set_frontend(struct dvb_frontend *fe) 883 { 884 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 885 struct smsdvb_client_t *client = 886 container_of(fe, struct smsdvb_client_t, frontend); 887 888 struct { 889 struct sms_msg_hdr msg; 890 u32 Data[3]; 891 } msg; 892 893 int ret; 894 895 client->fe_status = 0; 896 client->event_fe_state = -1; 897 client->event_unc_state = -1; 898 fe->dtv_property_cache.delivery_system = SYS_DVBT; 899 900 msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID; 901 msg.msg.msg_dst_id = HIF_TASK; 902 msg.msg.msg_flags = 0; 903 msg.msg.msg_type = MSG_SMS_RF_TUNE_REQ; 904 msg.msg.msg_length = sizeof(msg); 905 msg.Data[0] = c->frequency; 906 msg.Data[2] = 12000000; 907 908 pr_debug("%s: freq %d band %d\n", __func__, c->frequency, 909 c->bandwidth_hz); 910 911 switch (c->bandwidth_hz / 1000000) { 912 case 8: 913 msg.Data[1] = BW_8_MHZ; 914 break; 915 case 7: 916 msg.Data[1] = BW_7_MHZ; 917 break; 918 case 6: 919 msg.Data[1] = BW_6_MHZ; 920 break; 921 case 0: 922 return -EOPNOTSUPP; 923 default: 924 return -EINVAL; 925 } 926 /* Disable LNA, if any. An error is returned if no LNA is present */ 927 ret = sms_board_lna_control(client->coredev, 0); 928 if (ret == 0) { 929 enum fe_status status; 930 931 /* tune with LNA off at first */ 932 ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg), 933 &client->tune_done); 934 935 smsdvb_read_status(fe, &status); 936 937 if (status & FE_HAS_LOCK) 938 return ret; 939 940 /* previous tune didn't lock - enable LNA and tune again */ 941 sms_board_lna_control(client->coredev, 1); 942 } 943 944 return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg), 945 &client->tune_done); 946 } 947 948 static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe) 949 { 950 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 951 struct smsdvb_client_t *client = 952 container_of(fe, struct smsdvb_client_t, frontend); 953 int board_id = smscore_get_board_id(client->coredev); 954 struct sms_board *board = sms_get_board(board_id); 955 enum sms_device_type_st type = board->type; 956 int ret; 957 958 struct { 959 struct sms_msg_hdr msg; 960 u32 Data[4]; 961 } msg; 962 963 fe->dtv_property_cache.delivery_system = SYS_ISDBT; 964 965 msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID; 966 msg.msg.msg_dst_id = HIF_TASK; 967 msg.msg.msg_flags = 0; 968 msg.msg.msg_type = MSG_SMS_ISDBT_TUNE_REQ; 969 msg.msg.msg_length = sizeof(msg); 970 971 if (c->isdbt_sb_segment_idx == -1) 972 c->isdbt_sb_segment_idx = 0; 973 974 if (!c->isdbt_layer_enabled) 975 c->isdbt_layer_enabled = 7; 976 977 msg.Data[0] = c->frequency; 978 msg.Data[1] = BW_ISDBT_1SEG; 979 msg.Data[2] = 12000000; 980 msg.Data[3] = c->isdbt_sb_segment_idx; 981 982 if (c->isdbt_partial_reception) { 983 if ((type == SMS_PELE || type == SMS_RIO) && 984 c->isdbt_sb_segment_count > 3) 985 msg.Data[1] = BW_ISDBT_13SEG; 986 else if (c->isdbt_sb_segment_count > 1) 987 msg.Data[1] = BW_ISDBT_3SEG; 988 } else if (type == SMS_PELE || type == SMS_RIO) 989 msg.Data[1] = BW_ISDBT_13SEG; 990 991 c->bandwidth_hz = 6000000; 992 993 pr_debug("freq %d segwidth %d segindex %d\n", 994 c->frequency, c->isdbt_sb_segment_count, 995 c->isdbt_sb_segment_idx); 996 997 /* Disable LNA, if any. An error is returned if no LNA is present */ 998 ret = sms_board_lna_control(client->coredev, 0); 999 if (ret == 0) { 1000 enum fe_status status; 1001 1002 /* tune with LNA off at first */ 1003 ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg), 1004 &client->tune_done); 1005 1006 smsdvb_read_status(fe, &status); 1007 1008 if (status & FE_HAS_LOCK) 1009 return ret; 1010 1011 /* previous tune didn't lock - enable LNA and tune again */ 1012 sms_board_lna_control(client->coredev, 1); 1013 } 1014 return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg), 1015 &client->tune_done); 1016 } 1017 1018 static int smsdvb_set_frontend(struct dvb_frontend *fe) 1019 { 1020 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 1021 struct smsdvb_client_t *client = 1022 container_of(fe, struct smsdvb_client_t, frontend); 1023 struct smscore_device_t *coredev = client->coredev; 1024 1025 smsdvb_stats_not_ready(fe); 1026 c->strength.stat[0].uvalue = 0; 1027 c->cnr.stat[0].uvalue = 0; 1028 1029 client->has_tuned = false; 1030 1031 switch (smscore_get_device_mode(coredev)) { 1032 case DEVICE_MODE_DVBT: 1033 case DEVICE_MODE_DVBT_BDA: 1034 return smsdvb_dvbt_set_frontend(fe); 1035 case DEVICE_MODE_ISDBT: 1036 case DEVICE_MODE_ISDBT_BDA: 1037 return smsdvb_isdbt_set_frontend(fe); 1038 default: 1039 return -EINVAL; 1040 } 1041 } 1042 1043 static int smsdvb_init(struct dvb_frontend *fe) 1044 { 1045 struct smsdvb_client_t *client = 1046 container_of(fe, struct smsdvb_client_t, frontend); 1047 1048 sms_board_power(client->coredev, 1); 1049 1050 sms_board_dvb3_event(client, DVB3_EVENT_INIT); 1051 return 0; 1052 } 1053 1054 static int smsdvb_sleep(struct dvb_frontend *fe) 1055 { 1056 struct smsdvb_client_t *client = 1057 container_of(fe, struct smsdvb_client_t, frontend); 1058 1059 sms_board_led_feedback(client->coredev, SMS_LED_OFF); 1060 sms_board_power(client->coredev, 0); 1061 1062 sms_board_dvb3_event(client, DVB3_EVENT_SLEEP); 1063 1064 return 0; 1065 } 1066 1067 static void smsdvb_release(struct dvb_frontend *fe) 1068 { 1069 /* do nothing */ 1070 } 1071 1072 static const struct dvb_frontend_ops smsdvb_fe_ops = { 1073 .info = { 1074 .name = "Siano Mobile Digital MDTV Receiver", 1075 .frequency_min_hz = 44250 * kHz, 1076 .frequency_max_hz = 867250 * kHz, 1077 .frequency_stepsize_hz = 250 * kHz, 1078 .caps = FE_CAN_INVERSION_AUTO | 1079 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 1080 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 1081 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | 1082 FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | 1083 FE_CAN_GUARD_INTERVAL_AUTO | 1084 FE_CAN_RECOVER | 1085 FE_CAN_HIERARCHY_AUTO, 1086 }, 1087 1088 .release = smsdvb_release, 1089 1090 .set_frontend = smsdvb_set_frontend, 1091 .get_tune_settings = smsdvb_get_tune_settings, 1092 1093 .read_status = smsdvb_read_status, 1094 .read_ber = smsdvb_read_ber, 1095 .read_signal_strength = smsdvb_read_signal_strength, 1096 .read_snr = smsdvb_read_snr, 1097 .read_ucblocks = smsdvb_read_ucblocks, 1098 1099 .init = smsdvb_init, 1100 .sleep = smsdvb_sleep, 1101 }; 1102 1103 static int smsdvb_hotplug(struct smscore_device_t *coredev, 1104 struct device *device, int arrival) 1105 { 1106 struct smsclient_params_t params; 1107 struct smsdvb_client_t *client; 1108 int rc; 1109 1110 /* device removal handled by onremove callback */ 1111 if (!arrival) 1112 return 0; 1113 client = kzalloc(sizeof(struct smsdvb_client_t), GFP_KERNEL); 1114 if (!client) 1115 return -ENOMEM; 1116 1117 /* register dvb adapter */ 1118 rc = dvb_register_adapter(&client->adapter, 1119 sms_get_board( 1120 smscore_get_board_id(coredev))->name, 1121 THIS_MODULE, device, adapter_nr); 1122 if (rc < 0) { 1123 pr_err("dvb_register_adapter() failed %d\n", rc); 1124 goto adapter_error; 1125 } 1126 dvb_register_media_controller(&client->adapter, coredev->media_dev); 1127 1128 /* init dvb demux */ 1129 client->demux.dmx.capabilities = DMX_TS_FILTERING; 1130 client->demux.filternum = 32; /* todo: nova ??? */ 1131 client->demux.feednum = 32; 1132 client->demux.start_feed = smsdvb_start_feed; 1133 client->demux.stop_feed = smsdvb_stop_feed; 1134 1135 rc = dvb_dmx_init(&client->demux); 1136 if (rc < 0) { 1137 pr_err("dvb_dmx_init failed %d\n", rc); 1138 goto dvbdmx_error; 1139 } 1140 1141 /* init dmxdev */ 1142 client->dmxdev.filternum = 32; 1143 client->dmxdev.demux = &client->demux.dmx; 1144 client->dmxdev.capabilities = 0; 1145 1146 rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter); 1147 if (rc < 0) { 1148 pr_err("dvb_dmxdev_init failed %d\n", rc); 1149 goto dmxdev_error; 1150 } 1151 1152 /* init and register frontend */ 1153 memcpy(&client->frontend.ops, &smsdvb_fe_ops, 1154 sizeof(struct dvb_frontend_ops)); 1155 1156 switch (smscore_get_device_mode(coredev)) { 1157 case DEVICE_MODE_DVBT: 1158 case DEVICE_MODE_DVBT_BDA: 1159 client->frontend.ops.delsys[0] = SYS_DVBT; 1160 break; 1161 case DEVICE_MODE_ISDBT: 1162 case DEVICE_MODE_ISDBT_BDA: 1163 client->frontend.ops.delsys[0] = SYS_ISDBT; 1164 break; 1165 } 1166 1167 rc = dvb_register_frontend(&client->adapter, &client->frontend); 1168 if (rc < 0) { 1169 pr_err("frontend registration failed %d\n", rc); 1170 goto frontend_error; 1171 } 1172 1173 params.initial_id = 1; 1174 params.data_type = MSG_SMS_DVBT_BDA_DATA; 1175 params.onresponse_handler = smsdvb_onresponse; 1176 params.onremove_handler = smsdvb_onremove; 1177 params.context = client; 1178 1179 rc = smscore_register_client(coredev, ¶ms, &client->smsclient); 1180 if (rc < 0) { 1181 pr_err("smscore_register_client() failed %d\n", rc); 1182 goto client_error; 1183 } 1184 1185 client->coredev = coredev; 1186 1187 init_completion(&client->tune_done); 1188 init_completion(&client->stats_done); 1189 1190 mutex_lock(&g_smsdvb_clientslock); 1191 1192 list_add(&client->entry, &g_smsdvb_clients); 1193 1194 mutex_unlock(&g_smsdvb_clientslock); 1195 1196 client->event_fe_state = -1; 1197 client->event_unc_state = -1; 1198 sms_board_dvb3_event(client, DVB3_EVENT_HOTPLUG); 1199 1200 sms_board_setup(coredev); 1201 1202 if (smsdvb_debugfs_create(client) < 0) 1203 pr_info("failed to create debugfs node\n"); 1204 1205 rc = dvb_create_media_graph(&client->adapter, true); 1206 if (rc < 0) { 1207 pr_err("dvb_create_media_graph failed %d\n", rc); 1208 goto media_graph_error; 1209 } 1210 1211 pr_info("DVB interface registered.\n"); 1212 return 0; 1213 1214 media_graph_error: 1215 mutex_lock(&g_smsdvb_clientslock); 1216 list_del(&client->entry); 1217 mutex_unlock(&g_smsdvb_clientslock); 1218 1219 smsdvb_debugfs_release(client); 1220 1221 client_error: 1222 dvb_unregister_frontend(&client->frontend); 1223 1224 frontend_error: 1225 dvb_dmxdev_release(&client->dmxdev); 1226 1227 dmxdev_error: 1228 dvb_dmx_release(&client->demux); 1229 1230 dvbdmx_error: 1231 smsdvb_media_device_unregister(client); 1232 dvb_unregister_adapter(&client->adapter); 1233 1234 adapter_error: 1235 kfree(client); 1236 return rc; 1237 } 1238 1239 static int __init smsdvb_module_init(void) 1240 { 1241 int rc; 1242 1243 smsdvb_debugfs_register(); 1244 1245 rc = smscore_register_hotplug(smsdvb_hotplug); 1246 1247 pr_debug("\n"); 1248 1249 return rc; 1250 } 1251 1252 static void __exit smsdvb_module_exit(void) 1253 { 1254 smscore_unregister_hotplug(smsdvb_hotplug); 1255 1256 mutex_lock(&g_smsdvb_clientslock); 1257 1258 while (!list_empty(&g_smsdvb_clients)) 1259 smsdvb_unregister_client((struct smsdvb_client_t *)g_smsdvb_clients.next); 1260 1261 smsdvb_debugfs_unregister(); 1262 1263 mutex_unlock(&g_smsdvb_clientslock); 1264 } 1265 1266 module_init(smsdvb_module_init); 1267 module_exit(smsdvb_module_exit); 1268 1269 MODULE_DESCRIPTION("SMS DVB subsystem adaptation module"); 1270 MODULE_AUTHOR("Siano Mobile Silicon, Inc. (uris@siano-ms.com)"); 1271 MODULE_LICENSE("GPL"); 1272