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

   1 /****************************************************************
   2
   3 Siano Mobile Silicon, Inc.
   4 MDTV receiver kernel modules.
   5 Copyright (C) 2006-2008, Uri Shkolnik
   6
   7 This program is free software: you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation, either version 2 of the License, or
  10 (at your option) any later version.
  11
  12  This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 ****************************************************************/
  21
  22 #include "smscoreapi.h"
  23
  24 #include <linux/module.h>
  25 #include <linux/slab.h>
  26 #include <linux/init.h>
  27 #include <asm/div64.h>
  28
  29 #include "dmxdev.h"
  30 #include "dvbdev.h"
  31 #include "dvb_demux.h"
  32 #include "dvb_frontend.h"
  33
  34 #include "sms-cards.h"
  35
  36 #include "smsdvb.h"
  37
  38 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  39
  40 static struct list_head g_smsdvb_clients;
  41 static struct mutex g_smsdvb_clientslock;
  42
  43 static u32 sms_to_guard_interval_table[] = {
  44         [0] = GUARD_INTERVAL_1_32,
  45         [1] = GUARD_INTERVAL_1_16,
  46         [2] = GUARD_INTERVAL_1_8,
  47         [3] = GUARD_INTERVAL_1_4,
  48 };
  49
  50 static u32 sms_to_code_rate_table[] = {
  51         [0] = FEC_1_2,
  52         [1] = FEC_2_3,
  53         [2] = FEC_3_4,
  54         [3] = FEC_5_6,
  55         [4] = FEC_7_8,
  56 };
  57
  58
  59 static u32 sms_to_hierarchy_table[] = {
  60         [0] = HIERARCHY_NONE,
  61         [1] = HIERARCHY_1,
  62         [2] = HIERARCHY_2,
  63         [3] = HIERARCHY_4,
  64 };
  65
  66 static u32 sms_to_modulation_table[] = {
  67         [0] = QPSK,
  68         [1] = QAM_16,
  69         [2] = QAM_64,
  70         [3] = DQPSK,
  71 };
  72
  73
  74 /* Events that may come from DVB v3 adapter */
  75 static void sms_board_dvb3_event(struct smsdvb_client_t *client,
  76                 enum SMS_DVB3_EVENTS event) {
  77
  78         struct smscore_device_t *coredev = client->coredev;
  79         switch (event) {
  80         case DVB3_EVENT_INIT:
  81                 pr_debug("DVB3_EVENT_INIT\n");
  82                 sms_board_event(coredev, BOARD_EVENT_BIND);
  83                 break;
  84         case DVB3_EVENT_SLEEP:
  85                 pr_debug("DVB3_EVENT_SLEEP\n");
  86                 sms_board_event(coredev, BOARD_EVENT_POWER_SUSPEND);
  87                 break;
  88         case DVB3_EVENT_HOTPLUG:
  89                 pr_debug("DVB3_EVENT_HOTPLUG\n");
  90                 sms_board_event(coredev, BOARD_EVENT_POWER_INIT);
  91                 break;
  92         case DVB3_EVENT_FE_LOCK:
  93                 if (client->event_fe_state != DVB3_EVENT_FE_LOCK) {
  94                         client->event_fe_state = DVB3_EVENT_FE_LOCK;
  95                         pr_debug("DVB3_EVENT_FE_LOCK\n");
  96                         sms_board_event(coredev, BOARD_EVENT_FE_LOCK);
  97                 }
  98                 break;
  99         case DVB3_EVENT_FE_UNLOCK:
 100                 if (client->event_fe_state != DVB3_EVENT_FE_UNLOCK) {
 101                         client->event_fe_state = DVB3_EVENT_FE_UNLOCK;
 102                         pr_debug("DVB3_EVENT_FE_UNLOCK\n");
 103                         sms_board_event(coredev, BOARD_EVENT_FE_UNLOCK);
 104                 }
 105                 break;
 106         case DVB3_EVENT_UNC_OK:
 107                 if (client->event_unc_state != DVB3_EVENT_UNC_OK) {
 108                         client->event_unc_state = DVB3_EVENT_UNC_OK;
 109                         pr_debug("DVB3_EVENT_UNC_OK\n");
 110                         sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_OK);
 111                 }
 112                 break;
 113         case DVB3_EVENT_UNC_ERR:
 114                 if (client->event_unc_state != DVB3_EVENT_UNC_ERR) {
 115                         client->event_unc_state = DVB3_EVENT_UNC_ERR;
 116                         pr_debug("DVB3_EVENT_UNC_ERR\n");
 117                         sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_ERRORS);
 118                 }
 119                 break;
 120
 121         default:
 122                 pr_err("Unknown dvb3 api event\n");
 123                 break;
 124         }
 125 }
 126
 127 static void smsdvb_stats_not_ready(struct dvb_frontend *fe)
 128 {
 129         struct smsdvb_client_t *client =
 130                 container_of(fe, struct smsdvb_client_t, frontend);
 131         struct smscore_device_t *coredev = client->coredev;
 132         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 133         int i, n_layers;
 134
 135         switch (smscore_get_device_mode(coredev)) {
 136         case DEVICE_MODE_ISDBT:
 137         case DEVICE_MODE_ISDBT_BDA:
 138                 n_layers = 4;
 139                 break;
 140         default:
 141                 n_layers = 1;
 142         }
 143
 144         /* Global stats */
 145         c->strength.len = 1;
 146         c->cnr.len = 1;
 147         c->strength.stat[0].scale = FE_SCALE_DECIBEL;
 148         c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 149
 150         /* Per-layer stats */
 151         c->post_bit_error.len = n_layers;
 152         c->post_bit_count.len = n_layers;
 153         c->block_error.len = n_layers;
 154         c->block_count.len = n_layers;
 155
 156         /*
 157          * Put all of them at FE_SCALE_NOT_AVAILABLE. They're dynamically
 158          * changed when the stats become available.
 159          */
 160         for (i = 0; i < n_layers; i++) {
 161                 c->post_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
 162                 c->post_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
 163                 c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
 164                 c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
 165         }
 166 }
 167
 168 static inline int sms_to_mode(u32 mode)
 169 {
 170         switch (mode) {
 171         case 2:
 172                 return TRANSMISSION_MODE_2K;
 173         case 4:
 174                 return TRANSMISSION_MODE_4K;
 175         case 8:
 176                 return TRANSMISSION_MODE_8K;
 177         }
 178         return TRANSMISSION_MODE_AUTO;
 179 }
 180
 181 static inline int sms_to_status(u32 is_demod_locked, u32 is_rf_locked)
 182 {
 183         if (is_demod_locked)
 184                 return FE_HAS_SIGNAL  | FE_HAS_CARRIER | FE_HAS_VITERBI |
 185                        FE_HAS_SYNC    | FE_HAS_LOCK;
 186
 187         if (is_rf_locked)
 188                 return FE_HAS_SIGNAL | FE_HAS_CARRIER;
 189
 190         return 0;
 191 }
 192
 193 static inline u32 sms_to_bw(u32 value)
 194 {
 195         return value * 1000000;
 196 }
 197
 198 #define convert_from_table(value, table, defval) ({                     \
 199         u32 __ret;                                                      \
 200         if (value < ARRAY_SIZE(table))                                  \
 201                 __ret = table[value];                                   \
 202         else                                                            \
 203                 __ret = defval;                                         \
 204         __ret;                                                          \
 205 })
 206
 207 #define sms_to_guard_interval(value)                                    \
 208         convert_from_table(value, sms_to_guard_interval_table,          \
 209                            GUARD_INTERVAL_AUTO);
 210
 211 #define sms_to_code_rate(value)                                         \
 212         convert_from_table(value, sms_to_code_rate_table,               \
 213                            FEC_NONE);
 214
 215 #define sms_to_hierarchy(value)                                         \
 216         convert_from_table(value, sms_to_hierarchy_table,               \
 217                            FEC_NONE);
 218
 219 #define sms_to_modulation(value)                                        \
 220         convert_from_table(value, sms_to_modulation_table,              \
 221                            FEC_NONE);
 222
 223 static void smsdvb_update_tx_params(struct smsdvb_client_t *client,
 224                                     struct sms_tx_stats *p)
 225 {
 226         struct dvb_frontend *fe = &client->frontend;
 227         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 228
 229         c->frequency = p->frequency;
 230         client->fe_status = sms_to_status(p->is_demod_locked, 0);
 231         c->bandwidth_hz = sms_to_bw(p->bandwidth);
 232         c->transmission_mode = sms_to_mode(p->transmission_mode);
 233         c->guard_interval = sms_to_guard_interval(p->guard_interval);
 234         c->code_rate_HP = sms_to_code_rate(p->code_rate);
 235         c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
 236         c->hierarchy = sms_to_hierarchy(p->hierarchy);
 237         c->modulation = sms_to_modulation(p->constellation);
 238 }
 239
 240 static void smsdvb_update_per_slices(struct smsdvb_client_t *client,
 241                                      struct RECEPTION_STATISTICS_PER_SLICES_S *p)
 242 {
 243         struct dvb_frontend *fe = &client->frontend;
 244         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 245         u64 tmp;
 246
 247         client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
 248         c->modulation = sms_to_modulation(p->constellation);
 249
 250         /* signal Strength, in DBm */
 251         c->strength.stat[0].uvalue = p->in_band_power * 1000;
 252
 253         /* Carrier to noise ratio, in DB */
 254         c->cnr.stat[0].svalue = p->snr * 1000;
 255
 256         /* PER/BER requires demod lock */
 257         if (!p->is_demod_locked)
 258                 return;
 259
 260         /* TS PER */
 261         client->last_per = c->block_error.stat[0].uvalue;
 262         c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 263         c->block_count.stat[0].scale = FE_SCALE_COUNTER;
 264         c->block_error.stat[0].uvalue += p->ets_packets;
 265         c->block_count.stat[0].uvalue += p->ets_packets + p->ts_packets;
 266
 267         /* ber */
 268         c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 269         c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 270         c->post_bit_error.stat[0].uvalue += p->ber_error_count;
 271         c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
 272
 273         /* Legacy PER/BER */
 274         tmp = p->ets_packets * 65535;
 275         if (p->ts_packets + p->ets_packets)
 276                 do_div(tmp, p->ts_packets + p->ets_packets);
 277         client->legacy_per = tmp;
 278 }
 279
 280 static void smsdvb_update_dvb_stats(struct smsdvb_client_t *client,
 281                                     struct sms_stats *p)
 282 {
 283         struct dvb_frontend *fe = &client->frontend;
 284         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 285
 286         if (client->prt_dvb_stats)
 287                 client->prt_dvb_stats(client->debug_data, p);
 288
 289         client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
 290
 291         /* Update DVB modulation parameters */
 292         c->frequency = p->frequency;
 293         client->fe_status = sms_to_status(p->is_demod_locked, 0);
 294         c->bandwidth_hz = sms_to_bw(p->bandwidth);
 295         c->transmission_mode = sms_to_mode(p->transmission_mode);
 296         c->guard_interval = sms_to_guard_interval(p->guard_interval);
 297         c->code_rate_HP = sms_to_code_rate(p->code_rate);
 298         c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
 299         c->hierarchy = sms_to_hierarchy(p->hierarchy);
 300         c->modulation = sms_to_modulation(p->constellation);
 301
 302         /* update reception data */
 303         c->lna = p->is_external_lna_on ? 1 : 0;
 304
 305         /* Carrier to noise ratio, in DB */
 306         c->cnr.stat[0].svalue = p->SNR * 1000;
 307
 308         /* signal Strength, in DBm */
 309         c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
 310
 311         /* PER/BER requires demod lock */
 312         if (!p->is_demod_locked)
 313                 return;
 314
 315         /* TS PER */
 316         client->last_per = c->block_error.stat[0].uvalue;
 317         c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 318         c->block_count.stat[0].scale = FE_SCALE_COUNTER;
 319         c->block_error.stat[0].uvalue += p->error_ts_packets;
 320         c->block_count.stat[0].uvalue += p->total_ts_packets;
 321
 322         /* ber */
 323         c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 324         c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 325         c->post_bit_error.stat[0].uvalue += p->ber_error_count;
 326         c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
 327
 328         /* Legacy PER/BER */
 329         client->legacy_ber = p->ber;
 330 };
 331
 332 static void smsdvb_update_isdbt_stats(struct smsdvb_client_t *client,
 333                                       struct sms_isdbt_stats *p)
 334 {
 335         struct dvb_frontend *fe = &client->frontend;
 336         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 337         struct sms_isdbt_layer_stats *lr;
 338         int i, n_layers;
 339
 340         if (client->prt_isdb_stats)
 341                 client->prt_isdb_stats(client->debug_data, p);
 342
 343         client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
 344
 345         /*
 346          * Firmware 2.1 seems to report only lock status and
 347          * signal strength. The signal strength indicator is at the
 348          * wrong field.
 349          */
 350         if (p->statistics_type == 0) {
 351                 c->strength.stat[0].uvalue = ((s32)p->transmission_mode) * 1000;
 352                 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 353                 return;
 354         }
 355
 356         /* Update ISDB-T transmission parameters */
 357         c->frequency = p->frequency;
 358         c->bandwidth_hz = sms_to_bw(p->bandwidth);
 359         c->transmission_mode = sms_to_mode(p->transmission_mode);
 360         c->guard_interval = sms_to_guard_interval(p->guard_interval);
 361         c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
 362         n_layers = p->num_of_layers;
 363         if (n_layers < 1)
 364                 n_layers = 1;
 365         if (n_layers > 3)
 366                 n_layers = 3;
 367         c->isdbt_layer_enabled = 0;
 368
 369         /* update reception data */
 370         c->lna = p->is_external_lna_on ? 1 : 0;
 371
 372         /* Carrier to noise ratio, in DB */
 373         c->cnr.stat[0].svalue = p->SNR * 1000;
 374
 375         /* signal Strength, in DBm */
 376         c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
 377
 378         /* PER/BER and per-layer stats require demod lock */
 379         if (!p->is_demod_locked)
 380                 return;
 381
 382         client->last_per = c->block_error.stat[0].uvalue;
 383
 384         /* Clears global counters, as the code below will sum it again */
 385         c->block_error.stat[0].uvalue = 0;
 386         c->block_count.stat[0].uvalue = 0;
 387         c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 388         c->block_count.stat[0].scale = FE_SCALE_COUNTER;
 389         c->post_bit_error.stat[0].uvalue = 0;
 390         c->post_bit_count.stat[0].uvalue = 0;
 391         c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 392         c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 393
 394         for (i = 0; i < n_layers; i++) {
 395                 lr = &p->layer_info[i];
 396
 397                 /* Update per-layer transmission parameters */
 398                 if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
 399                         c->isdbt_layer_enabled |= 1 << i;
 400                         c->layer[i].segment_count = lr->number_of_segments;
 401                 } else {
 402                         continue;
 403                 }
 404                 c->layer[i].modulation = sms_to_modulation(lr->constellation);
 405
 406                 /* TS PER */
 407                 c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
 408                 c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
 409                 c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
 410                 c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
 411
 412                 /* Update global PER counter */
 413                 c->block_error.stat[0].uvalue += lr->error_ts_packets;
 414                 c->block_count.stat[0].uvalue += lr->total_ts_packets;
 415
 416                 /* BER */
 417                 c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
 418                 c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
 419                 c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
 420                 c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
 421
 422                 /* Update global BER counter */
 423                 c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
 424                 c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
 425         }
 426 }
 427
 428 static void smsdvb_update_isdbt_stats_ex(struct smsdvb_client_t *client,
 429                                          struct sms_isdbt_stats_ex *p)
 430 {
 431         struct dvb_frontend *fe = &client->frontend;
 432         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 433         struct sms_isdbt_layer_stats *lr;
 434         int i, n_layers;
 435
 436         if (client->prt_isdb_stats_ex)
 437                 client->prt_isdb_stats_ex(client->debug_data, p);
 438
 439         /* Update ISDB-T transmission parameters */
 440         c->frequency = p->frequency;
 441         client->fe_status = sms_to_status(p->is_demod_locked, 0);
 442         c->bandwidth_hz = sms_to_bw(p->bandwidth);
 443         c->transmission_mode = sms_to_mode(p->transmission_mode);
 444         c->guard_interval = sms_to_guard_interval(p->guard_interval);
 445         c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
 446         n_layers = p->num_of_layers;
 447         if (n_layers < 1)
 448                 n_layers = 1;
 449         if (n_layers > 3)
 450                 n_layers = 3;
 451         c->isdbt_layer_enabled = 0;
 452
 453         /* update reception data */
 454         c->lna = p->is_external_lna_on ? 1 : 0;
 455
 456         /* Carrier to noise ratio, in DB */
 457         c->cnr.stat[0].svalue = p->SNR * 1000;
 458
 459         /* signal Strength, in DBm */
 460         c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
 461
 462         /* PER/BER and per-layer stats require demod lock */
 463         if (!p->is_demod_locked)
 464                 return;
 465
 466         client->last_per = c->block_error.stat[0].uvalue;
 467
 468         /* Clears global counters, as the code below will sum it again */
 469         c->block_error.stat[0].uvalue = 0;
 470         c->block_count.stat[0].uvalue = 0;
 471         c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 472         c->block_count.stat[0].scale = FE_SCALE_COUNTER;
 473         c->post_bit_error.stat[0].uvalue = 0;
 474         c->post_bit_count.stat[0].uvalue = 0;
 475         c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 476         c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 477
 478         c->post_bit_error.len = n_layers + 1;
 479         c->post_bit_count.len = n_layers + 1;
 480         c->block_error.len = n_layers + 1;
 481         c->block_count.len = n_layers + 1;
 482         for (i = 0; i < n_layers; i++) {
 483                 lr = &p->layer_info[i];
 484
 485                 /* Update per-layer transmission parameters */
 486                 if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
 487                         c->isdbt_layer_enabled |= 1 << i;
 488                         c->layer[i].segment_count = lr->number_of_segments;
 489                 } else {
 490                         continue;
 491                 }
 492                 c->layer[i].modulation = sms_to_modulation(lr->constellation);
 493
 494                 /* TS PER */
 495                 c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
 496                 c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
 497                 c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
 498                 c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
 499
 500                 /* Update global PER counter */
 501                 c->block_error.stat[0].uvalue += lr->error_ts_packets;
 502                 c->block_count.stat[0].uvalue += lr->total_ts_packets;
 503
 504                 /* ber */
 505                 c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
 506                 c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
 507                 c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
 508                 c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
 509
 510                 /* Update global ber counter */
 511                 c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
 512                 c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
 513         }
 514 }
 515
 516 static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
 517 {
 518         struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
 519         struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) (((u8 *) cb->p)
 520                         + cb->offset);
 521         void *p = phdr + 1;
 522         struct dvb_frontend *fe = &client->frontend;
 523         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 524         bool is_status_update = false;
 525
 526         switch (phdr->msg_type) {
 527         case MSG_SMS_DVBT_BDA_DATA:
 528                 /*
 529                  * Only feed data to dvb demux if are there any feed listening
 530                  * to it and if the device has tuned
 531                  */
 532                 if (client->feed_users && client->has_tuned)
 533                         dvb_dmx_swfilter(&client->demux, p,
 534                                          cb->size - sizeof(struct sms_msg_hdr));
 535                 break;
 536
 537         case MSG_SMS_RF_TUNE_RES:
 538         case MSG_SMS_ISDBT_TUNE_RES:
 539                 complete(&client->tune_done);
 540                 break;
 541
 542         case MSG_SMS_SIGNAL_DETECTED_IND:
 543                 client->fe_status = FE_HAS_SIGNAL  | FE_HAS_CARRIER |
 544                                     FE_HAS_VITERBI | FE_HAS_SYNC    |
 545                                     FE_HAS_LOCK;
 546
 547                 is_status_update = true;
 548                 break;
 549
 550         case MSG_SMS_NO_SIGNAL_IND:
 551                 client->fe_status = 0;
 552
 553                 is_status_update = true;
 554                 break;
 555
 556         case MSG_SMS_TRANSMISSION_IND:
 557                 smsdvb_update_tx_params(client, p);
 558
 559                 is_status_update = true;
 560                 break;
 561
 562         case MSG_SMS_HO_PER_SLICES_IND:
 563                 smsdvb_update_per_slices(client, p);
 564
 565                 is_status_update = true;
 566                 break;
 567
 568         case MSG_SMS_GET_STATISTICS_RES:
 569                 switch (smscore_get_device_mode(client->coredev)) {
 570                 case DEVICE_MODE_ISDBT:
 571                 case DEVICE_MODE_ISDBT_BDA:
 572                         smsdvb_update_isdbt_stats(client, p);
 573                         break;
 574                 default:
 575                         /* Skip sms_msg_statistics_info:request_result field */
 576                         smsdvb_update_dvb_stats(client, p + sizeof(u32));
 577                 }
 578
 579                 is_status_update = true;
 580                 break;
 581
 582         /* Only for ISDB-T */
 583         case MSG_SMS_GET_STATISTICS_EX_RES:
 584                 /* Skip sms_msg_statistics_info:request_result field? */
 585                 smsdvb_update_isdbt_stats_ex(client, p + sizeof(u32));
 586                 is_status_update = true;
 587                 break;
 588         default:
 589                 pr_debug("message not handled\n");
 590         }
 591         smscore_putbuffer(client->coredev, cb);
 592
 593         if (is_status_update) {
 594                 if (client->fe_status & FE_HAS_LOCK) {
 595                         sms_board_dvb3_event(client, DVB3_EVENT_FE_LOCK);
 596                         if (client->last_per == c->block_error.stat[0].uvalue)
 597                                 sms_board_dvb3_event(client, DVB3_EVENT_UNC_OK);
 598                         else
 599                                 sms_board_dvb3_event(client, DVB3_EVENT_UNC_ERR);
 600                         client->has_tuned = true;
 601                 } else {
 602                         smsdvb_stats_not_ready(fe);
 603                         client->has_tuned = false;
 604                         sms_board_dvb3_event(client, DVB3_EVENT_FE_UNLOCK);
 605                 }
 606                 complete(&client->stats_done);
 607         }
 608
 609         return 0;
 610 }
 611
 612 static void smsdvb_media_device_unregister(struct smsdvb_client_t *client)
 613 {
 614 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
 615         struct smscore_device_t *coredev = client->coredev;
 616
 617         if (!coredev->media_dev)
 618                 return;
 619         media_device_unregister(coredev->media_dev);
 620         media_device_cleanup(coredev->media_dev);
 621         kfree(coredev->media_dev);
 622         coredev->media_dev = NULL;
 623 #endif
 624 }
 625
 626 static void smsdvb_unregister_client(struct smsdvb_client_t *client)
 627 {
 628         /* must be called under clientslock */
 629
 630         list_del(&client->entry);
 631
 632         smsdvb_debugfs_release(client);
 633         smscore_unregister_client(client->smsclient);
 634         dvb_unregister_frontend(&client->frontend);
 635         dvb_dmxdev_release(&client->dmxdev);
 636         dvb_dmx_release(&client->demux);
 637         smsdvb_media_device_unregister(client);
 638         dvb_unregister_adapter(&client->adapter);
 639         kfree(client);
 640 }
 641
 642 static void smsdvb_onremove(void *context)
 643 {
 644         kmutex_lock(&g_smsdvb_clientslock);
 645
 646         smsdvb_unregister_client((struct smsdvb_client_t *) context);
 647
 648         kmutex_unlock(&g_smsdvb_clientslock);
 649 }
 650
 651 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
 652 {
 653         struct smsdvb_client_t *client =
 654                 container_of(feed->demux, struct smsdvb_client_t, demux);
 655         struct sms_msg_data pid_msg;
 656
 657         pr_debug("add pid %d(%x)\n",
 658                   feed->pid, feed->pid);
 659
 660         client->feed_users++;
 661
 662         pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
 663         pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
 664         pid_msg.x_msg_header.msg_flags = 0;
 665         pid_msg.x_msg_header.msg_type  = MSG_SMS_ADD_PID_FILTER_REQ;
 666         pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
 667         pid_msg.msg_data[0] = feed->pid;
 668
 669         return smsclient_sendrequest(client->smsclient,
 670                                      &pid_msg, sizeof(pid_msg));
 671 }
 672
 673 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
 674 {
 675         struct smsdvb_client_t *client =
 676                 container_of(feed->demux, struct smsdvb_client_t, demux);
 677         struct sms_msg_data pid_msg;
 678
 679         pr_debug("remove pid %d(%x)\n",
 680                   feed->pid, feed->pid);
 681
 682         client->feed_users--;
 683
 684         pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
 685         pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
 686         pid_msg.x_msg_header.msg_flags = 0;
 687         pid_msg.x_msg_header.msg_type  = MSG_SMS_REMOVE_PID_FILTER_REQ;
 688         pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
 689         pid_msg.msg_data[0] = feed->pid;
 690
 691         return smsclient_sendrequest(client->smsclient,
 692                                      &pid_msg, sizeof(pid_msg));
 693 }
 694
 695 static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
 696                                         void *buffer, size_t size,
 697                                         struct completion *completion)
 698 {
 699         int rc;
 700
 701         rc = smsclient_sendrequest(client->smsclient, buffer, size);
 702         if (rc < 0)
 703                 return rc;
 704
 705         return wait_for_completion_timeout(completion,
 706                                            msecs_to_jiffies(2000)) ?
 707                                                 0 : -ETIME;
 708 }
 709
 710 static int smsdvb_send_statistics_request(struct smsdvb_client_t *client)
 711 {
 712         int rc;
 713         struct sms_msg_hdr msg;
 714
 715         /* Don't request stats too fast */
 716         if (client->get_stats_jiffies &&
 717            (!time_after(jiffies, client->get_stats_jiffies)))
 718                 return 0;
 719         client->get_stats_jiffies = jiffies + msecs_to_jiffies(100);
 720
 721         msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
 722         msg.msg_dst_id = HIF_TASK;
 723         msg.msg_flags = 0;
 724         msg.msg_length = sizeof(msg);
 725
 726         switch (smscore_get_device_mode(client->coredev)) {
 727         case DEVICE_MODE_ISDBT:
 728         case DEVICE_MODE_ISDBT_BDA:
 729                 /*
 730                 * Check for firmware version, to avoid breaking for old cards
 731                 */
 732                 if (client->coredev->fw_version >= 0x800)
 733                         msg.msg_type = MSG_SMS_GET_STATISTICS_EX_REQ;
 734                 else
 735                         msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
 736                 break;
 737         default:
 738                 msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
 739         }
 740
 741         rc = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
 742                                          &client->stats_done);
 743
 744         return rc;
 745 }
 746
 747 static inline int led_feedback(struct smsdvb_client_t *client)
 748 {
 749         if (!(client->fe_status & FE_HAS_LOCK))
 750                 return sms_board_led_feedback(client->coredev, SMS_LED_OFF);
 751
 752         return sms_board_led_feedback(client->coredev,
 753                                      (client->legacy_ber == 0) ?
 754                                      SMS_LED_HI : SMS_LED_LO);
 755 }
 756
 757 static int smsdvb_read_status(struct dvb_frontend *fe, enum fe_status *stat)
 758 {
 759         int rc;
 760         struct smsdvb_client_t *client;
 761         client = container_of(fe, struct smsdvb_client_t, frontend);
 762
 763         rc = smsdvb_send_statistics_request(client);
 764
 765         *stat = client->fe_status;
 766
 767         led_feedback(client);
 768
 769         return rc;
 770 }
 771
 772 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
 773 {
 774         int rc;
 775         struct smsdvb_client_t *client;
 776
 777         client = container_of(fe, struct smsdvb_client_t, frontend);
 778
 779         rc = smsdvb_send_statistics_request(client);
 780
 781         *ber = client->legacy_ber;
 782
 783         led_feedback(client);
 784
 785         return rc;
 786 }
 787
 788 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 789 {
 790         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 791         int rc;
 792         s32 power = (s32) c->strength.stat[0].uvalue;
 793         struct smsdvb_client_t *client;
 794
 795         client = container_of(fe, struct smsdvb_client_t, frontend);
 796
 797         rc = smsdvb_send_statistics_request(client);
 798
 799         if (power < -95)
 800                 *strength = 0;
 801                 else if (power > -29)
 802                         *strength = 65535;
 803                 else
 804                         *strength = (power + 95) * 65535 / 66;
 805
 806         led_feedback(client);
 807
 808         return rc;
 809 }
 810
 811 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
 812 {
 813         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 814         int rc;
 815         struct smsdvb_client_t *client;
 816
 817         client = container_of(fe, struct smsdvb_client_t, frontend);
 818
 819         rc = smsdvb_send_statistics_request(client);
 820
 821         /* Preferred scale for SNR with legacy API: 0.1 dB */
 822         *snr = ((u32)c->cnr.stat[0].svalue) / 100;
 823
 824         led_feedback(client);
 825
 826         return rc;
 827 }
 828
 829 static int smsdvb_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
 830 {
 831         int rc;
 832         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 833         struct smsdvb_client_t *client;
 834
 835         client = container_of(fe, struct smsdvb_client_t, frontend);
 836
 837         rc = smsdvb_send_statistics_request(client);
 838
 839         *ucblocks = c->block_error.stat[0].uvalue;
 840
 841         led_feedback(client);
 842
 843         return rc;
 844 }
 845
 846 static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
 847                                     struct dvb_frontend_tune_settings *tune)
 848 {
 849         pr_debug("\n");
 850
 851         tune->min_delay_ms = 400;
 852         tune->step_size = 250000;
 853         tune->max_drift = 0;
 854         return 0;
 855 }
 856
 857 static int smsdvb_dvbt_set_frontend(struct dvb_frontend *fe)
 858 {
 859         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 860         struct smsdvb_client_t *client =
 861                 container_of(fe, struct smsdvb_client_t, frontend);
 862
 863         struct {
 864                 struct sms_msg_hdr      msg;
 865                 u32             Data[3];
 866         } msg;
 867
 868         int ret;
 869
 870         client->fe_status = 0;
 871         client->event_fe_state = -1;
 872         client->event_unc_state = -1;
 873         fe->dtv_property_cache.delivery_system = SYS_DVBT;
 874
 875         msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
 876         msg.msg.msg_dst_id = HIF_TASK;
 877         msg.msg.msg_flags = 0;
 878         msg.msg.msg_type = MSG_SMS_RF_TUNE_REQ;
 879         msg.msg.msg_length = sizeof(msg);
 880         msg.Data[0] = c->frequency;
 881         msg.Data[2] = 12000000;
 882
 883         pr_debug("%s: freq %d band %d\n", __func__, c->frequency,
 884                  c->bandwidth_hz);
 885
 886         switch (c->bandwidth_hz / 1000000) {
 887         case 8:
 888                 msg.Data[1] = BW_8_MHZ;
 889                 break;
 890         case 7:
 891                 msg.Data[1] = BW_7_MHZ;
 892                 break;
 893         case 6:
 894                 msg.Data[1] = BW_6_MHZ;
 895                 break;
 896         case 0:
 897                 return -EOPNOTSUPP;
 898         default:
 899                 return -EINVAL;
 900         }
 901         /* Disable LNA, if any. An error is returned if no LNA is present */
 902         ret = sms_board_lna_control(client->coredev, 0);
 903         if (ret == 0) {
 904                 enum fe_status status;
 905
 906                 /* tune with LNA off at first */
 907                 ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
 908                                                   &client->tune_done);
 909
 910                 smsdvb_read_status(fe, &status);
 911
 912                 if (status & FE_HAS_LOCK)
 913                         return ret;
 914
 915                 /* previous tune didn't lock - enable LNA and tune again */
 916                 sms_board_lna_control(client->coredev, 1);
 917         }
 918
 919         return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
 920                                            &client->tune_done);
 921 }
 922
 923 static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
 924 {
 925         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 926         struct smsdvb_client_t *client =
 927                 container_of(fe, struct smsdvb_client_t, frontend);
 928         int board_id = smscore_get_board_id(client->coredev);
 929         struct sms_board *board = sms_get_board(board_id);
 930         enum sms_device_type_st type = board->type;
 931         int ret;
 932
 933         struct {
 934                 struct sms_msg_hdr      msg;
 935                 u32             Data[4];
 936         } msg;
 937
 938         fe->dtv_property_cache.delivery_system = SYS_ISDBT;
 939
 940         msg.msg.msg_src_id  = DVBT_BDA_CONTROL_MSG_ID;
 941         msg.msg.msg_dst_id  = HIF_TASK;
 942         msg.msg.msg_flags  = 0;
 943         msg.msg.msg_type   = MSG_SMS_ISDBT_TUNE_REQ;
 944         msg.msg.msg_length = sizeof(msg);
 945
 946         if (c->isdbt_sb_segment_idx == -1)
 947                 c->isdbt_sb_segment_idx = 0;
 948
 949         if (!c->isdbt_layer_enabled)
 950                 c->isdbt_layer_enabled = 7;
 951
 952         msg.Data[0] = c->frequency;
 953         msg.Data[1] = BW_ISDBT_1SEG;
 954         msg.Data[2] = 12000000;
 955         msg.Data[3] = c->isdbt_sb_segment_idx;
 956
 957         if (c->isdbt_partial_reception) {
 958                 if ((type == SMS_PELE || type == SMS_RIO) &&
 959                     c->isdbt_sb_segment_count > 3)
 960                         msg.Data[1] = BW_ISDBT_13SEG;
 961                 else if (c->isdbt_sb_segment_count > 1)
 962                         msg.Data[1] = BW_ISDBT_3SEG;
 963         } else if (type == SMS_PELE || type == SMS_RIO)
 964                 msg.Data[1] = BW_ISDBT_13SEG;
 965
 966         c->bandwidth_hz = 6000000;
 967
 968         pr_debug("freq %d segwidth %d segindex %d\n",
 969                  c->frequency, c->isdbt_sb_segment_count,
 970                  c->isdbt_sb_segment_idx);
 971
 972         /* Disable LNA, if any. An error is returned if no LNA is present */
 973         ret = sms_board_lna_control(client->coredev, 0);
 974         if (ret == 0) {
 975                 enum fe_status status;
 976
 977                 /* tune with LNA off at first */
 978                 ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
 979                                                   &client->tune_done);
 980
 981                 smsdvb_read_status(fe, &status);
 982
 983                 if (status & FE_HAS_LOCK)
 984                         return ret;
 985
 986                 /* previous tune didn't lock - enable LNA and tune again */
 987                 sms_board_lna_control(client->coredev, 1);
 988         }
 989         return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
 990                                            &client->tune_done);
 991 }
 992
 993 static int smsdvb_set_frontend(struct dvb_frontend *fe)
 994 {
 995         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 996         struct smsdvb_client_t *client =
 997                 container_of(fe, struct smsdvb_client_t, frontend);
 998         struct smscore_device_t *coredev = client->coredev;
 999
1000         smsdvb_stats_not_ready(fe);
1001         c->strength.stat[0].uvalue = 0;
1002         c->cnr.stat[0].uvalue = 0;
1003
1004         client->has_tuned = false;
1005
1006         switch (smscore_get_device_mode(coredev)) {
1007         case DEVICE_MODE_DVBT:
1008         case DEVICE_MODE_DVBT_BDA:
1009                 return smsdvb_dvbt_set_frontend(fe);
1010         case DEVICE_MODE_ISDBT:
1011         case DEVICE_MODE_ISDBT_BDA:
1012                 return smsdvb_isdbt_set_frontend(fe);
1013         default:
1014                 return -EINVAL;
1015         }
1016 }
1017
1018 static int smsdvb_init(struct dvb_frontend *fe)
1019 {
1020         struct smsdvb_client_t *client =
1021                 container_of(fe, struct smsdvb_client_t, frontend);
1022
1023         sms_board_power(client->coredev, 1);
1024
1025         sms_board_dvb3_event(client, DVB3_EVENT_INIT);
1026         return 0;
1027 }
1028
1029 static int smsdvb_sleep(struct dvb_frontend *fe)
1030 {
1031         struct smsdvb_client_t *client =
1032                 container_of(fe, struct smsdvb_client_t, frontend);
1033
1034         sms_board_led_feedback(client->coredev, SMS_LED_OFF);
1035         sms_board_power(client->coredev, 0);
1036
1037         sms_board_dvb3_event(client, DVB3_EVENT_SLEEP);
1038
1039         return 0;
1040 }
1041
1042 static void smsdvb_release(struct dvb_frontend *fe)
1043 {
1044         /* do nothing */
1045 }
1046
1047 static const struct dvb_frontend_ops smsdvb_fe_ops = {
1048         .info = {
1049                 .name                   = "Siano Mobile Digital MDTV Receiver",
1050                 .frequency_min          = 44250000,
1051                 .frequency_max          = 867250000,
1052                 .frequency_stepsize     = 250000,
1053                 .caps = FE_CAN_INVERSION_AUTO |
1054                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1055                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1056                         FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
1057                         FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
1058                         FE_CAN_GUARD_INTERVAL_AUTO |
1059                         FE_CAN_RECOVER |
1060                         FE_CAN_HIERARCHY_AUTO,
1061         },
1062
1063         .release = smsdvb_release,
1064
1065         .set_frontend = smsdvb_set_frontend,
1066         .get_tune_settings = smsdvb_get_tune_settings,
1067
1068         .read_status = smsdvb_read_status,
1069         .read_ber = smsdvb_read_ber,
1070         .read_signal_strength = smsdvb_read_signal_strength,
1071         .read_snr = smsdvb_read_snr,
1072         .read_ucblocks = smsdvb_read_ucblocks,
1073
1074         .init = smsdvb_init,
1075         .sleep = smsdvb_sleep,
1076 };
1077
1078 static int smsdvb_hotplug(struct smscore_device_t *coredev,
1079                           struct device *device, int arrival)
1080 {
1081         struct smsclient_params_t params;
1082         struct smsdvb_client_t *client;
1083         int rc;
1084
1085         /* device removal handled by onremove callback */
1086         if (!arrival)
1087                 return 0;
1088         client = kzalloc(sizeof(struct smsdvb_client_t), GFP_KERNEL);
1089         if (!client)
1090                 return -ENOMEM;
1091
1092         /* register dvb adapter */
1093         rc = dvb_register_adapter(&client->adapter,
1094                                   sms_get_board(
1095                                         smscore_get_board_id(coredev))->name,
1096                                   THIS_MODULE, device, adapter_nr);
1097         if (rc < 0) {
1098                 pr_err("dvb_register_adapter() failed %d\n", rc);
1099                 goto adapter_error;
1100         }
1101         dvb_register_media_controller(&client->adapter, coredev->media_dev);
1102
1103         /* init dvb demux */
1104         client->demux.dmx.capabilities = DMX_TS_FILTERING;
1105         client->demux.filternum = 32; /* todo: nova ??? */
1106         client->demux.feednum = 32;
1107         client->demux.start_feed = smsdvb_start_feed;
1108         client->demux.stop_feed = smsdvb_stop_feed;
1109
1110         rc = dvb_dmx_init(&client->demux);
1111         if (rc < 0) {
1112                 pr_err("dvb_dmx_init failed %d\n", rc);
1113                 goto dvbdmx_error;
1114         }
1115
1116         /* init dmxdev */
1117         client->dmxdev.filternum = 32;
1118         client->dmxdev.demux = &client->demux.dmx;
1119         client->dmxdev.capabilities = 0;
1120
1121         rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
1122         if (rc < 0) {
1123                 pr_err("dvb_dmxdev_init failed %d\n", rc);
1124                 goto dmxdev_error;
1125         }
1126
1127         /* init and register frontend */
1128         memcpy(&client->frontend.ops, &smsdvb_fe_ops,
1129                sizeof(struct dvb_frontend_ops));
1130
1131         switch (smscore_get_device_mode(coredev)) {
1132         case DEVICE_MODE_DVBT:
1133         case DEVICE_MODE_DVBT_BDA:
1134                 client->frontend.ops.delsys[0] = SYS_DVBT;
1135                 break;
1136         case DEVICE_MODE_ISDBT:
1137         case DEVICE_MODE_ISDBT_BDA:
1138                 client->frontend.ops.delsys[0] = SYS_ISDBT;
1139                 break;
1140         }
1141
1142         rc = dvb_register_frontend(&client->adapter, &client->frontend);
1143         if (rc < 0) {
1144                 pr_err("frontend registration failed %d\n", rc);
1145                 goto frontend_error;
1146         }
1147
1148         params.initial_id = 1;
1149         params.data_type = MSG_SMS_DVBT_BDA_DATA;
1150         params.onresponse_handler = smsdvb_onresponse;
1151         params.onremove_handler = smsdvb_onremove;
1152         params.context = client;
1153
1154         rc = smscore_register_client(coredev, &params, &client->smsclient);
1155         if (rc < 0) {
1156                 pr_err("smscore_register_client() failed %d\n", rc);
1157                 goto client_error;
1158         }
1159
1160         client->coredev = coredev;
1161
1162         init_completion(&client->tune_done);
1163         init_completion(&client->stats_done);
1164
1165         kmutex_lock(&g_smsdvb_clientslock);
1166
1167         list_add(&client->entry, &g_smsdvb_clients);
1168
1169         kmutex_unlock(&g_smsdvb_clientslock);
1170
1171         client->event_fe_state = -1;
1172         client->event_unc_state = -1;
1173         sms_board_dvb3_event(client, DVB3_EVENT_HOTPLUG);
1174
1175         sms_board_setup(coredev);
1176
1177         if (smsdvb_debugfs_create(client) < 0)
1178                 pr_info("failed to create debugfs node\n");
1179
1180         rc = dvb_create_media_graph(&client->adapter, true);
1181         if (rc < 0) {
1182                 pr_err("dvb_create_media_graph failed %d\n", rc);
1183                 goto media_graph_error;
1184         }
1185
1186         pr_info("DVB interface registered.\n");
1187         return 0;
1188
1189 media_graph_error:
1190         mutex_lock(&g_smsdvb_clientslock);
1191         list_del(&client->entry);
1192         mutex_unlock(&g_smsdvb_clientslock);
1193
1194         smsdvb_debugfs_release(client);
1195
1196 client_error:
1197         dvb_unregister_frontend(&client->frontend);
1198
1199 frontend_error:
1200         dvb_dmxdev_release(&client->dmxdev);
1201
1202 dmxdev_error:
1203         dvb_dmx_release(&client->demux);
1204
1205 dvbdmx_error:
1206         smsdvb_media_device_unregister(client);
1207         dvb_unregister_adapter(&client->adapter);
1208
1209 adapter_error:
1210         kfree(client);
1211         return rc;
1212 }
1213
1214 static int __init smsdvb_module_init(void)
1215 {
1216         int rc;
1217
1218         INIT_LIST_HEAD(&g_smsdvb_clients);
1219         kmutex_init(&g_smsdvb_clientslock);
1220
1221         smsdvb_debugfs_register();
1222
1223         rc = smscore_register_hotplug(smsdvb_hotplug);
1224
1225         pr_debug("\n");
1226
1227         return rc;
1228 }
1229
1230 static void __exit smsdvb_module_exit(void)
1231 {
1232         smscore_unregister_hotplug(smsdvb_hotplug);
1233
1234         kmutex_lock(&g_smsdvb_clientslock);
1235
1236         while (!list_empty(&g_smsdvb_clients))
1237                 smsdvb_unregister_client((struct smsdvb_client_t *)g_smsdvb_clients.next);
1238
1239         smsdvb_debugfs_unregister();
1240
1241         kmutex_unlock(&g_smsdvb_clientslock);
1242 }
1243
1244 module_init(smsdvb_module_init);
1245 module_exit(smsdvb_module_exit);
1246
1247 MODULE_DESCRIPTION("SMS DVB subsystem adaptation module");
1248 MODULE_AUTHOR("Siano Mobile Silicon, Inc. (uris@siano-ms.com)");
1249 MODULE_LICENSE("GPL");