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0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /****************************************************************
0003 
0004 Siano Mobile Silicon, Inc.
0005 MDTV receiver kernel modules.
0006 Copyright (C) 2006-2008, Uri Shkolnik
0007 
0008 
0009 ****************************************************************/
0010 
0011 #include "smscoreapi.h"
0012 
0013 #include <linux/module.h>
0014 #include <linux/slab.h>
0015 #include <linux/init.h>
0016 #include <asm/div64.h>
0017 
0018 #include <media/dmxdev.h>
0019 #include <media/dvbdev.h>
0020 #include <media/dvb_demux.h>
0021 #include <media/dvb_frontend.h>
0022 
0023 #include "sms-cards.h"
0024 
0025 #include "smsdvb.h"
0026 
0027 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
0028 
0029 static LIST_HEAD(g_smsdvb_clients);
0030 static DEFINE_MUTEX(g_smsdvb_clientslock);
0031 
0032 static u32 sms_to_guard_interval_table[] = {
0033     [0] = GUARD_INTERVAL_1_32,
0034     [1] = GUARD_INTERVAL_1_16,
0035     [2] = GUARD_INTERVAL_1_8,
0036     [3] = GUARD_INTERVAL_1_4,
0037 };
0038 
0039 static u32 sms_to_code_rate_table[] = {
0040     [0] = FEC_1_2,
0041     [1] = FEC_2_3,
0042     [2] = FEC_3_4,
0043     [3] = FEC_5_6,
0044     [4] = FEC_7_8,
0045 };
0046 
0047 
0048 static u32 sms_to_hierarchy_table[] = {
0049     [0] = HIERARCHY_NONE,
0050     [1] = HIERARCHY_1,
0051     [2] = HIERARCHY_2,
0052     [3] = HIERARCHY_4,
0053 };
0054 
0055 static u32 sms_to_modulation_table[] = {
0056     [0] = QPSK,
0057     [1] = QAM_16,
0058     [2] = QAM_64,
0059     [3] = DQPSK,
0060 };
0061 
0062 
0063 /* Events that may come from DVB v3 adapter */
0064 static void sms_board_dvb3_event(struct smsdvb_client_t *client,
0065         enum SMS_DVB3_EVENTS event) {
0066 
0067     struct smscore_device_t *coredev = client->coredev;
0068     switch (event) {
0069     case DVB3_EVENT_INIT:
0070         pr_debug("DVB3_EVENT_INIT\n");
0071         sms_board_event(coredev, BOARD_EVENT_BIND);
0072         break;
0073     case DVB3_EVENT_SLEEP:
0074         pr_debug("DVB3_EVENT_SLEEP\n");
0075         sms_board_event(coredev, BOARD_EVENT_POWER_SUSPEND);
0076         break;
0077     case DVB3_EVENT_HOTPLUG:
0078         pr_debug("DVB3_EVENT_HOTPLUG\n");
0079         sms_board_event(coredev, BOARD_EVENT_POWER_INIT);
0080         break;
0081     case DVB3_EVENT_FE_LOCK:
0082         if (client->event_fe_state != DVB3_EVENT_FE_LOCK) {
0083             client->event_fe_state = DVB3_EVENT_FE_LOCK;
0084             pr_debug("DVB3_EVENT_FE_LOCK\n");
0085             sms_board_event(coredev, BOARD_EVENT_FE_LOCK);
0086         }
0087         break;
0088     case DVB3_EVENT_FE_UNLOCK:
0089         if (client->event_fe_state != DVB3_EVENT_FE_UNLOCK) {
0090             client->event_fe_state = DVB3_EVENT_FE_UNLOCK;
0091             pr_debug("DVB3_EVENT_FE_UNLOCK\n");
0092             sms_board_event(coredev, BOARD_EVENT_FE_UNLOCK);
0093         }
0094         break;
0095     case DVB3_EVENT_UNC_OK:
0096         if (client->event_unc_state != DVB3_EVENT_UNC_OK) {
0097             client->event_unc_state = DVB3_EVENT_UNC_OK;
0098             pr_debug("DVB3_EVENT_UNC_OK\n");
0099             sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_OK);
0100         }
0101         break;
0102     case DVB3_EVENT_UNC_ERR:
0103         if (client->event_unc_state != DVB3_EVENT_UNC_ERR) {
0104             client->event_unc_state = DVB3_EVENT_UNC_ERR;
0105             pr_debug("DVB3_EVENT_UNC_ERR\n");
0106             sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_ERRORS);
0107         }
0108         break;
0109 
0110     default:
0111         pr_err("Unknown dvb3 api event\n");
0112         break;
0113     }
0114 }
0115 
0116 static void smsdvb_stats_not_ready(struct dvb_frontend *fe)
0117 {
0118     struct smsdvb_client_t *client =
0119         container_of(fe, struct smsdvb_client_t, frontend);
0120     struct smscore_device_t *coredev = client->coredev;
0121     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0122     int i, n_layers;
0123 
0124     switch (smscore_get_device_mode(coredev)) {
0125     case DEVICE_MODE_ISDBT:
0126     case DEVICE_MODE_ISDBT_BDA:
0127         n_layers = 4;
0128         break;
0129     default:
0130         n_layers = 1;
0131     }
0132 
0133     /* Global stats */
0134     c->strength.len = 1;
0135     c->cnr.len = 1;
0136     c->strength.stat[0].scale = FE_SCALE_DECIBEL;
0137     c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
0138 
0139     /* Per-layer stats */
0140     c->post_bit_error.len = n_layers;
0141     c->post_bit_count.len = n_layers;
0142     c->block_error.len = n_layers;
0143     c->block_count.len = n_layers;
0144 
0145     /*
0146      * Put all of them at FE_SCALE_NOT_AVAILABLE. They're dynamically
0147      * changed when the stats become available.
0148      */
0149     for (i = 0; i < n_layers; i++) {
0150         c->post_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
0151         c->post_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
0152         c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
0153         c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
0154     }
0155 }
0156 
0157 static inline int sms_to_mode(u32 mode)
0158 {
0159     switch (mode) {
0160     case 2:
0161         return TRANSMISSION_MODE_2K;
0162     case 4:
0163         return TRANSMISSION_MODE_4K;
0164     case 8:
0165         return TRANSMISSION_MODE_8K;
0166     }
0167     return TRANSMISSION_MODE_AUTO;
0168 }
0169 
0170 static inline int sms_to_isdbt_mode(u32 mode)
0171 {
0172     switch (mode) {
0173     case 1:
0174         return TRANSMISSION_MODE_2K;
0175     case 2:
0176         return TRANSMISSION_MODE_4K;
0177     case 3:
0178         return TRANSMISSION_MODE_8K;
0179     }
0180     return TRANSMISSION_MODE_AUTO;
0181 }
0182 
0183 static inline int sms_to_isdbt_guard_interval(u32 interval)
0184 {
0185     switch (interval) {
0186     case 4:
0187         return GUARD_INTERVAL_1_4;
0188     case 8:
0189         return GUARD_INTERVAL_1_8;
0190     case 16:
0191         return GUARD_INTERVAL_1_16;
0192     case 32:
0193         return GUARD_INTERVAL_1_32;
0194     }
0195     return GUARD_INTERVAL_AUTO;
0196 }
0197 
0198 static inline int sms_to_status(u32 is_demod_locked, u32 is_rf_locked)
0199 {
0200     if (is_demod_locked)
0201         return FE_HAS_SIGNAL  | FE_HAS_CARRIER | FE_HAS_VITERBI |
0202                FE_HAS_SYNC    | FE_HAS_LOCK;
0203 
0204     if (is_rf_locked)
0205         return FE_HAS_SIGNAL | FE_HAS_CARRIER;
0206 
0207     return 0;
0208 }
0209 
0210 static inline u32 sms_to_bw(u32 value)
0211 {
0212     return value * 1000000;
0213 }
0214 
0215 #define convert_from_table(value, table, defval) ({         \
0216     u32 __ret;                          \
0217     if (value < ARRAY_SIZE(table))                  \
0218         __ret = table[value];                   \
0219     else                                \
0220         __ret = defval;                     \
0221     __ret;                              \
0222 })
0223 
0224 #define sms_to_guard_interval(value)                    \
0225     convert_from_table(value, sms_to_guard_interval_table,      \
0226                GUARD_INTERVAL_AUTO);
0227 
0228 #define sms_to_code_rate(value)                     \
0229     convert_from_table(value, sms_to_code_rate_table,       \
0230                FEC_NONE);
0231 
0232 #define sms_to_hierarchy(value)                     \
0233     convert_from_table(value, sms_to_hierarchy_table,       \
0234                FEC_NONE);
0235 
0236 #define sms_to_modulation(value)                    \
0237     convert_from_table(value, sms_to_modulation_table,      \
0238                FEC_NONE);
0239 
0240 static void smsdvb_update_tx_params(struct smsdvb_client_t *client,
0241                     struct sms_tx_stats *p)
0242 {
0243     struct dvb_frontend *fe = &client->frontend;
0244     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0245 
0246     c->frequency = p->frequency;
0247     client->fe_status = sms_to_status(p->is_demod_locked, 0);
0248     c->bandwidth_hz = sms_to_bw(p->bandwidth);
0249     c->transmission_mode = sms_to_mode(p->transmission_mode);
0250     c->guard_interval = sms_to_guard_interval(p->guard_interval);
0251     c->code_rate_HP = sms_to_code_rate(p->code_rate);
0252     c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
0253     c->hierarchy = sms_to_hierarchy(p->hierarchy);
0254     c->modulation = sms_to_modulation(p->constellation);
0255 }
0256 
0257 static void smsdvb_update_per_slices(struct smsdvb_client_t *client,
0258                      struct RECEPTION_STATISTICS_PER_SLICES_S *p)
0259 {
0260     struct dvb_frontend *fe = &client->frontend;
0261     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0262     u64 tmp;
0263 
0264     client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
0265     c->modulation = sms_to_modulation(p->constellation);
0266 
0267     /* signal Strength, in DBm */
0268     c->strength.stat[0].uvalue = p->in_band_power * 1000;
0269 
0270     /* Carrier to noise ratio, in DB */
0271     c->cnr.stat[0].svalue = p->snr * 1000;
0272 
0273     /* PER/BER requires demod lock */
0274     if (!p->is_demod_locked)
0275         return;
0276 
0277     /* TS PER */
0278     client->last_per = c->block_error.stat[0].uvalue;
0279     c->block_error.stat[0].scale = FE_SCALE_COUNTER;
0280     c->block_count.stat[0].scale = FE_SCALE_COUNTER;
0281     c->block_error.stat[0].uvalue += p->ets_packets;
0282     c->block_count.stat[0].uvalue += p->ets_packets + p->ts_packets;
0283 
0284     /* ber */
0285     c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
0286     c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
0287     c->post_bit_error.stat[0].uvalue += p->ber_error_count;
0288     c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
0289 
0290     /* Legacy PER/BER */
0291     tmp = p->ets_packets * 65535ULL;
0292     if (p->ts_packets + p->ets_packets)
0293         do_div(tmp, p->ts_packets + p->ets_packets);
0294     client->legacy_per = tmp;
0295 }
0296 
0297 static void smsdvb_update_dvb_stats(struct smsdvb_client_t *client,
0298                     struct sms_stats *p)
0299 {
0300     struct dvb_frontend *fe = &client->frontend;
0301     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0302 
0303     if (client->prt_dvb_stats)
0304         client->prt_dvb_stats(client->debug_data, p);
0305 
0306     client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
0307 
0308     /* Update DVB modulation parameters */
0309     c->frequency = p->frequency;
0310     client->fe_status = sms_to_status(p->is_demod_locked, 0);
0311     c->bandwidth_hz = sms_to_bw(p->bandwidth);
0312     c->transmission_mode = sms_to_mode(p->transmission_mode);
0313     c->guard_interval = sms_to_guard_interval(p->guard_interval);
0314     c->code_rate_HP = sms_to_code_rate(p->code_rate);
0315     c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
0316     c->hierarchy = sms_to_hierarchy(p->hierarchy);
0317     c->modulation = sms_to_modulation(p->constellation);
0318 
0319     /* update reception data */
0320     c->lna = p->is_external_lna_on ? 1 : 0;
0321 
0322     /* Carrier to noise ratio, in DB */
0323     c->cnr.stat[0].svalue = p->SNR * 1000;
0324 
0325     /* signal Strength, in DBm */
0326     c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
0327 
0328     /* PER/BER requires demod lock */
0329     if (!p->is_demod_locked)
0330         return;
0331 
0332     /* TS PER */
0333     client->last_per = c->block_error.stat[0].uvalue;
0334     c->block_error.stat[0].scale = FE_SCALE_COUNTER;
0335     c->block_count.stat[0].scale = FE_SCALE_COUNTER;
0336     c->block_error.stat[0].uvalue += p->error_ts_packets;
0337     c->block_count.stat[0].uvalue += p->total_ts_packets;
0338 
0339     /* ber */
0340     c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
0341     c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
0342     c->post_bit_error.stat[0].uvalue += p->ber_error_count;
0343     c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
0344 
0345     /* Legacy PER/BER */
0346     client->legacy_ber = p->ber;
0347 };
0348 
0349 static void smsdvb_update_isdbt_stats(struct smsdvb_client_t *client,
0350                       struct sms_isdbt_stats *p)
0351 {
0352     struct dvb_frontend *fe = &client->frontend;
0353     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0354     struct sms_isdbt_layer_stats *lr;
0355     int i, n_layers;
0356 
0357     if (client->prt_isdb_stats)
0358         client->prt_isdb_stats(client->debug_data, p);
0359 
0360     client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
0361 
0362     /*
0363      * Firmware 2.1 seems to report only lock status and
0364      * signal strength. The signal strength indicator is at the
0365      * wrong field.
0366      */
0367     if (p->statistics_type == 0) {
0368         c->strength.stat[0].uvalue = ((s32)p->transmission_mode) * 1000;
0369         c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
0370         return;
0371     }
0372 
0373     /* Update ISDB-T transmission parameters */
0374     c->frequency = p->frequency;
0375     c->bandwidth_hz = sms_to_bw(p->bandwidth);
0376     c->transmission_mode = sms_to_isdbt_mode(p->transmission_mode);
0377     c->guard_interval = sms_to_isdbt_guard_interval(p->guard_interval);
0378     c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
0379     n_layers = p->num_of_layers;
0380     if (n_layers < 1)
0381         n_layers = 1;
0382     if (n_layers > 3)
0383         n_layers = 3;
0384     c->isdbt_layer_enabled = 0;
0385 
0386     /* update reception data */
0387     c->lna = p->is_external_lna_on ? 1 : 0;
0388 
0389     /* Carrier to noise ratio, in DB */
0390     c->cnr.stat[0].svalue = p->SNR * 1000;
0391 
0392     /* signal Strength, in DBm */
0393     c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
0394 
0395     /* PER/BER and per-layer stats require demod lock */
0396     if (!p->is_demod_locked)
0397         return;
0398 
0399     client->last_per = c->block_error.stat[0].uvalue;
0400 
0401     /* Clears global counters, as the code below will sum it again */
0402     c->block_error.stat[0].uvalue = 0;
0403     c->block_count.stat[0].uvalue = 0;
0404     c->block_error.stat[0].scale = FE_SCALE_COUNTER;
0405     c->block_count.stat[0].scale = FE_SCALE_COUNTER;
0406     c->post_bit_error.stat[0].uvalue = 0;
0407     c->post_bit_count.stat[0].uvalue = 0;
0408     c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
0409     c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
0410 
0411     for (i = 0; i < n_layers; i++) {
0412         lr = &p->layer_info[i];
0413 
0414         /* Update per-layer transmission parameters */
0415         if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
0416             c->isdbt_layer_enabled |= 1 << i;
0417             c->layer[i].segment_count = lr->number_of_segments;
0418         } else {
0419             continue;
0420         }
0421         c->layer[i].modulation = sms_to_modulation(lr->constellation);
0422         c->layer[i].fec = sms_to_code_rate(lr->code_rate);
0423 
0424         /* Time interleaving */
0425         c->layer[i].interleaving = (u8)lr->ti_ldepth_i;
0426 
0427         /* TS PER */
0428         c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
0429         c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
0430         c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
0431         c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
0432 
0433         /* Update global PER counter */
0434         c->block_error.stat[0].uvalue += lr->error_ts_packets;
0435         c->block_count.stat[0].uvalue += lr->total_ts_packets;
0436 
0437         /* BER */
0438         c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
0439         c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
0440         c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
0441         c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
0442 
0443         /* Update global BER counter */
0444         c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
0445         c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
0446     }
0447 }
0448 
0449 static void smsdvb_update_isdbt_stats_ex(struct smsdvb_client_t *client,
0450                      struct sms_isdbt_stats_ex *p)
0451 {
0452     struct dvb_frontend *fe = &client->frontend;
0453     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0454     struct sms_isdbt_layer_stats *lr;
0455     int i, n_layers;
0456 
0457     if (client->prt_isdb_stats_ex)
0458         client->prt_isdb_stats_ex(client->debug_data, p);
0459 
0460     /* Update ISDB-T transmission parameters */
0461     c->frequency = p->frequency;
0462     client->fe_status = sms_to_status(p->is_demod_locked, 0);
0463     c->bandwidth_hz = sms_to_bw(p->bandwidth);
0464     c->transmission_mode = sms_to_isdbt_mode(p->transmission_mode);
0465     c->guard_interval = sms_to_isdbt_guard_interval(p->guard_interval);
0466     c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
0467     n_layers = p->num_of_layers;
0468     if (n_layers < 1)
0469         n_layers = 1;
0470     if (n_layers > 3)
0471         n_layers = 3;
0472     c->isdbt_layer_enabled = 0;
0473 
0474     /* update reception data */
0475     c->lna = p->is_external_lna_on ? 1 : 0;
0476 
0477     /* Carrier to noise ratio, in DB */
0478     c->cnr.stat[0].svalue = p->SNR * 1000;
0479 
0480     /* signal Strength, in DBm */
0481     c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
0482 
0483     /* PER/BER and per-layer stats require demod lock */
0484     if (!p->is_demod_locked)
0485         return;
0486 
0487     client->last_per = c->block_error.stat[0].uvalue;
0488 
0489     /* Clears global counters, as the code below will sum it again */
0490     c->block_error.stat[0].uvalue = 0;
0491     c->block_count.stat[0].uvalue = 0;
0492     c->block_error.stat[0].scale = FE_SCALE_COUNTER;
0493     c->block_count.stat[0].scale = FE_SCALE_COUNTER;
0494     c->post_bit_error.stat[0].uvalue = 0;
0495     c->post_bit_count.stat[0].uvalue = 0;
0496     c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
0497     c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
0498 
0499     c->post_bit_error.len = n_layers + 1;
0500     c->post_bit_count.len = n_layers + 1;
0501     c->block_error.len = n_layers + 1;
0502     c->block_count.len = n_layers + 1;
0503     for (i = 0; i < n_layers; i++) {
0504         lr = &p->layer_info[i];
0505 
0506         /* Update per-layer transmission parameters */
0507         if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
0508             c->isdbt_layer_enabled |= 1 << i;
0509             c->layer[i].segment_count = lr->number_of_segments;
0510         } else {
0511             continue;
0512         }
0513         c->layer[i].modulation = sms_to_modulation(lr->constellation);
0514         c->layer[i].fec = sms_to_code_rate(lr->code_rate);
0515 
0516         /* Time interleaving */
0517         c->layer[i].interleaving = (u8)lr->ti_ldepth_i;
0518 
0519         /* TS PER */
0520         c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
0521         c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
0522         c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
0523         c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
0524 
0525         /* Update global PER counter */
0526         c->block_error.stat[0].uvalue += lr->error_ts_packets;
0527         c->block_count.stat[0].uvalue += lr->total_ts_packets;
0528 
0529         /* ber */
0530         c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
0531         c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
0532         c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
0533         c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
0534 
0535         /* Update global ber counter */
0536         c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
0537         c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
0538     }
0539 }
0540 
0541 static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
0542 {
0543     struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
0544     struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) (((u8 *) cb->p)
0545             + cb->offset);
0546     void *p = phdr + 1;
0547     struct dvb_frontend *fe = &client->frontend;
0548     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0549     bool is_status_update = false;
0550 
0551     switch (phdr->msg_type) {
0552     case MSG_SMS_DVBT_BDA_DATA:
0553         /*
0554          * Only feed data to dvb demux if are there any feed listening
0555          * to it and if the device has tuned
0556          */
0557         if (client->feed_users && client->has_tuned)
0558             dvb_dmx_swfilter(&client->demux, p,
0559                      cb->size - sizeof(struct sms_msg_hdr));
0560         break;
0561 
0562     case MSG_SMS_RF_TUNE_RES:
0563     case MSG_SMS_ISDBT_TUNE_RES:
0564         complete(&client->tune_done);
0565         break;
0566 
0567     case MSG_SMS_SIGNAL_DETECTED_IND:
0568         client->fe_status = FE_HAS_SIGNAL  | FE_HAS_CARRIER |
0569                     FE_HAS_VITERBI | FE_HAS_SYNC    |
0570                     FE_HAS_LOCK;
0571 
0572         is_status_update = true;
0573         break;
0574 
0575     case MSG_SMS_NO_SIGNAL_IND:
0576         client->fe_status = 0;
0577 
0578         is_status_update = true;
0579         break;
0580 
0581     case MSG_SMS_TRANSMISSION_IND:
0582         smsdvb_update_tx_params(client, p);
0583 
0584         is_status_update = true;
0585         break;
0586 
0587     case MSG_SMS_HO_PER_SLICES_IND:
0588         smsdvb_update_per_slices(client, p);
0589 
0590         is_status_update = true;
0591         break;
0592 
0593     case MSG_SMS_GET_STATISTICS_RES:
0594         switch (smscore_get_device_mode(client->coredev)) {
0595         case DEVICE_MODE_ISDBT:
0596         case DEVICE_MODE_ISDBT_BDA:
0597             smsdvb_update_isdbt_stats(client, p);
0598             break;
0599         default:
0600             /* Skip sms_msg_statistics_info:request_result field */
0601             smsdvb_update_dvb_stats(client, p + sizeof(u32));
0602         }
0603 
0604         is_status_update = true;
0605         break;
0606 
0607     /* Only for ISDB-T */
0608     case MSG_SMS_GET_STATISTICS_EX_RES:
0609         /* Skip sms_msg_statistics_info:request_result field? */
0610         smsdvb_update_isdbt_stats_ex(client, p + sizeof(u32));
0611         is_status_update = true;
0612         break;
0613     default:
0614         pr_debug("message not handled\n");
0615     }
0616     smscore_putbuffer(client->coredev, cb);
0617 
0618     if (is_status_update) {
0619         if (client->fe_status & FE_HAS_LOCK) {
0620             sms_board_dvb3_event(client, DVB3_EVENT_FE_LOCK);
0621             if (client->last_per == c->block_error.stat[0].uvalue)
0622                 sms_board_dvb3_event(client, DVB3_EVENT_UNC_OK);
0623             else
0624                 sms_board_dvb3_event(client, DVB3_EVENT_UNC_ERR);
0625             client->has_tuned = true;
0626         } else {
0627             smsdvb_stats_not_ready(fe);
0628             client->has_tuned = false;
0629             sms_board_dvb3_event(client, DVB3_EVENT_FE_UNLOCK);
0630         }
0631         complete(&client->stats_done);
0632     }
0633 
0634     return 0;
0635 }
0636 
0637 static void smsdvb_media_device_unregister(struct smsdvb_client_t *client)
0638 {
0639 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
0640     struct smscore_device_t *coredev = client->coredev;
0641 
0642     if (!coredev->media_dev)
0643         return;
0644     media_device_unregister(coredev->media_dev);
0645     media_device_cleanup(coredev->media_dev);
0646     kfree(coredev->media_dev);
0647     coredev->media_dev = NULL;
0648 #endif
0649 }
0650 
0651 static void smsdvb_unregister_client(struct smsdvb_client_t *client)
0652 {
0653     /* must be called under clientslock */
0654 
0655     list_del(&client->entry);
0656 
0657     smsdvb_debugfs_release(client);
0658     smscore_unregister_client(client->smsclient);
0659     dvb_unregister_frontend(&client->frontend);
0660     dvb_dmxdev_release(&client->dmxdev);
0661     dvb_dmx_release(&client->demux);
0662     smsdvb_media_device_unregister(client);
0663     dvb_unregister_adapter(&client->adapter);
0664     kfree(client);
0665 }
0666 
0667 static void smsdvb_onremove(void *context)
0668 {
0669     mutex_lock(&g_smsdvb_clientslock);
0670 
0671     smsdvb_unregister_client((struct smsdvb_client_t *) context);
0672 
0673     mutex_unlock(&g_smsdvb_clientslock);
0674 }
0675 
0676 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
0677 {
0678     struct smsdvb_client_t *client =
0679         container_of(feed->demux, struct smsdvb_client_t, demux);
0680     struct sms_msg_data pid_msg;
0681 
0682     pr_debug("add pid %d(%x)\n",
0683           feed->pid, feed->pid);
0684 
0685     client->feed_users++;
0686 
0687     pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
0688     pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
0689     pid_msg.x_msg_header.msg_flags = 0;
0690     pid_msg.x_msg_header.msg_type  = MSG_SMS_ADD_PID_FILTER_REQ;
0691     pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
0692     pid_msg.msg_data[0] = feed->pid;
0693 
0694     return smsclient_sendrequest(client->smsclient,
0695                      &pid_msg, sizeof(pid_msg));
0696 }
0697 
0698 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
0699 {
0700     struct smsdvb_client_t *client =
0701         container_of(feed->demux, struct smsdvb_client_t, demux);
0702     struct sms_msg_data pid_msg;
0703 
0704     pr_debug("remove pid %d(%x)\n",
0705           feed->pid, feed->pid);
0706 
0707     client->feed_users--;
0708 
0709     pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
0710     pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
0711     pid_msg.x_msg_header.msg_flags = 0;
0712     pid_msg.x_msg_header.msg_type  = MSG_SMS_REMOVE_PID_FILTER_REQ;
0713     pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
0714     pid_msg.msg_data[0] = feed->pid;
0715 
0716     return smsclient_sendrequest(client->smsclient,
0717                      &pid_msg, sizeof(pid_msg));
0718 }
0719 
0720 static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
0721                     void *buffer, size_t size,
0722                     struct completion *completion)
0723 {
0724     int rc;
0725 
0726     rc = smsclient_sendrequest(client->smsclient, buffer, size);
0727     if (rc < 0)
0728         return rc;
0729 
0730     return wait_for_completion_timeout(completion,
0731                        msecs_to_jiffies(2000)) ?
0732                         0 : -ETIME;
0733 }
0734 
0735 static int smsdvb_send_statistics_request(struct smsdvb_client_t *client)
0736 {
0737     int rc;
0738     struct sms_msg_hdr msg;
0739 
0740     /* Don't request stats too fast */
0741     if (client->get_stats_jiffies &&
0742        (!time_after(jiffies, client->get_stats_jiffies)))
0743         return 0;
0744     client->get_stats_jiffies = jiffies + msecs_to_jiffies(100);
0745 
0746     msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
0747     msg.msg_dst_id = HIF_TASK;
0748     msg.msg_flags = 0;
0749     msg.msg_length = sizeof(msg);
0750 
0751     switch (smscore_get_device_mode(client->coredev)) {
0752     case DEVICE_MODE_ISDBT:
0753     case DEVICE_MODE_ISDBT_BDA:
0754         /*
0755         * Check for firmware version, to avoid breaking for old cards
0756         */
0757         if (client->coredev->fw_version >= 0x800)
0758             msg.msg_type = MSG_SMS_GET_STATISTICS_EX_REQ;
0759         else
0760             msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
0761         break;
0762     default:
0763         msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
0764     }
0765 
0766     rc = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
0767                      &client->stats_done);
0768 
0769     return rc;
0770 }
0771 
0772 static inline int led_feedback(struct smsdvb_client_t *client)
0773 {
0774     if (!(client->fe_status & FE_HAS_LOCK))
0775         return sms_board_led_feedback(client->coredev, SMS_LED_OFF);
0776 
0777     return sms_board_led_feedback(client->coredev,
0778                      (client->legacy_ber == 0) ?
0779                      SMS_LED_HI : SMS_LED_LO);
0780 }
0781 
0782 static int smsdvb_read_status(struct dvb_frontend *fe, enum fe_status *stat)
0783 {
0784     int rc;
0785     struct smsdvb_client_t *client;
0786     client = container_of(fe, struct smsdvb_client_t, frontend);
0787 
0788     rc = smsdvb_send_statistics_request(client);
0789 
0790     *stat = client->fe_status;
0791 
0792     led_feedback(client);
0793 
0794     return rc;
0795 }
0796 
0797 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
0798 {
0799     int rc;
0800     struct smsdvb_client_t *client;
0801 
0802     client = container_of(fe, struct smsdvb_client_t, frontend);
0803 
0804     rc = smsdvb_send_statistics_request(client);
0805 
0806     *ber = client->legacy_ber;
0807 
0808     led_feedback(client);
0809 
0810     return rc;
0811 }
0812 
0813 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
0814 {
0815     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0816     int rc;
0817     s32 power = (s32) c->strength.stat[0].uvalue;
0818     struct smsdvb_client_t *client;
0819 
0820     client = container_of(fe, struct smsdvb_client_t, frontend);
0821 
0822     rc = smsdvb_send_statistics_request(client);
0823 
0824     if (power < -95)
0825         *strength = 0;
0826         else if (power > -29)
0827             *strength = 65535;
0828         else
0829             *strength = (power + 95) * 65535 / 66;
0830 
0831     led_feedback(client);
0832 
0833     return rc;
0834 }
0835 
0836 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
0837 {
0838     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0839     int rc;
0840     struct smsdvb_client_t *client;
0841 
0842     client = container_of(fe, struct smsdvb_client_t, frontend);
0843 
0844     rc = smsdvb_send_statistics_request(client);
0845 
0846     /* Preferred scale for SNR with legacy API: 0.1 dB */
0847     *snr = ((u32)c->cnr.stat[0].svalue) / 100;
0848 
0849     led_feedback(client);
0850 
0851     return rc;
0852 }
0853 
0854 static int smsdvb_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
0855 {
0856     int rc;
0857     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0858     struct smsdvb_client_t *client;
0859 
0860     client = container_of(fe, struct smsdvb_client_t, frontend);
0861 
0862     rc = smsdvb_send_statistics_request(client);
0863 
0864     *ucblocks = c->block_error.stat[0].uvalue;
0865 
0866     led_feedback(client);
0867 
0868     return rc;
0869 }
0870 
0871 static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
0872                     struct dvb_frontend_tune_settings *tune)
0873 {
0874     pr_debug("\n");
0875 
0876     tune->min_delay_ms = 400;
0877     tune->step_size = 250000;
0878     tune->max_drift = 0;
0879     return 0;
0880 }
0881 
0882 static int smsdvb_dvbt_set_frontend(struct dvb_frontend *fe)
0883 {
0884     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0885     struct smsdvb_client_t *client =
0886         container_of(fe, struct smsdvb_client_t, frontend);
0887 
0888     struct {
0889         struct sms_msg_hdr  msg;
0890         u32     Data[3];
0891     } msg;
0892 
0893     int ret;
0894 
0895     client->fe_status = 0;
0896     client->event_fe_state = -1;
0897     client->event_unc_state = -1;
0898     fe->dtv_property_cache.delivery_system = SYS_DVBT;
0899 
0900     msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
0901     msg.msg.msg_dst_id = HIF_TASK;
0902     msg.msg.msg_flags = 0;
0903     msg.msg.msg_type = MSG_SMS_RF_TUNE_REQ;
0904     msg.msg.msg_length = sizeof(msg);
0905     msg.Data[0] = c->frequency;
0906     msg.Data[2] = 12000000;
0907 
0908     pr_debug("%s: freq %d band %d\n", __func__, c->frequency,
0909          c->bandwidth_hz);
0910 
0911     switch (c->bandwidth_hz / 1000000) {
0912     case 8:
0913         msg.Data[1] = BW_8_MHZ;
0914         break;
0915     case 7:
0916         msg.Data[1] = BW_7_MHZ;
0917         break;
0918     case 6:
0919         msg.Data[1] = BW_6_MHZ;
0920         break;
0921     case 0:
0922         return -EOPNOTSUPP;
0923     default:
0924         return -EINVAL;
0925     }
0926     /* Disable LNA, if any. An error is returned if no LNA is present */
0927     ret = sms_board_lna_control(client->coredev, 0);
0928     if (ret == 0) {
0929         enum fe_status status;
0930 
0931         /* tune with LNA off at first */
0932         ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
0933                           &client->tune_done);
0934 
0935         smsdvb_read_status(fe, &status);
0936 
0937         if (status & FE_HAS_LOCK)
0938             return ret;
0939 
0940         /* previous tune didn't lock - enable LNA and tune again */
0941         sms_board_lna_control(client->coredev, 1);
0942     }
0943 
0944     return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
0945                        &client->tune_done);
0946 }
0947 
0948 static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
0949 {
0950     struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0951     struct smsdvb_client_t *client =
0952         container_of(fe, struct smsdvb_client_t, frontend);
0953     int board_id = smscore_get_board_id(client->coredev);
0954     struct sms_board *board = sms_get_board(board_id);
0955     enum sms_device_type_st type = board->type;
0956     int ret;
0957 
0958     struct {
0959         struct sms_msg_hdr  msg;
0960         u32     Data[4];
0961     } msg;
0962 
0963     fe->dtv_property_cache.delivery_system = SYS_ISDBT;
0964 
0965     msg.msg.msg_src_id  = DVBT_BDA_CONTROL_MSG_ID;
0966     msg.msg.msg_dst_id  = HIF_TASK;
0967     msg.msg.msg_flags  = 0;
0968     msg.msg.msg_type   = MSG_SMS_ISDBT_TUNE_REQ;
0969     msg.msg.msg_length = sizeof(msg);
0970 
0971     if (c->isdbt_sb_segment_idx == -1)
0972         c->isdbt_sb_segment_idx = 0;
0973 
0974     if (!c->isdbt_layer_enabled)
0975         c->isdbt_layer_enabled = 7;
0976 
0977     msg.Data[0] = c->frequency;
0978     msg.Data[1] = BW_ISDBT_1SEG;
0979     msg.Data[2] = 12000000;
0980     msg.Data[3] = c->isdbt_sb_segment_idx;
0981 
0982     if (c->isdbt_partial_reception) {
0983         if ((type == SMS_PELE || type == SMS_RIO) &&
0984             c->isdbt_sb_segment_count > 3)
0985             msg.Data[1] = BW_ISDBT_13SEG;
0986         else if (c->isdbt_sb_segment_count > 1)
0987             msg.Data[1] = BW_ISDBT_3SEG;
0988     } else if (type == SMS_PELE || type == SMS_RIO)
0989         msg.Data[1] = BW_ISDBT_13SEG;
0990 
0991     c->bandwidth_hz = 6000000;
0992 
0993     pr_debug("freq %d segwidth %d segindex %d\n",
0994          c->frequency, c->isdbt_sb_segment_count,
0995          c->isdbt_sb_segment_idx);
0996 
0997     /* Disable LNA, if any. An error is returned if no LNA is present */
0998     ret = sms_board_lna_control(client->coredev, 0);
0999     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");
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