drivers/media/common/siano/smsdvb-main.c

   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, &params, &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");