smsdvb-main.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/****************************************************************
   3
   4Siano Mobile Silicon, Inc.
   5MDTV receiver kernel modules.
   6Copyright (C) 2006-2008, Uri Shkolnik
   7
   8
   9****************************************************************/
  10
  11#include "smscoreapi.h"
  12
  13#include <linux/module.h>
  14#include <linux/slab.h>
  15#include <linux/init.h>
  16#include <asm/div64.h>
  17
  18#include <media/dmxdev.h>
  19#include <media/dvbdev.h>
  20#include <media/dvb_demux.h>
  21#include <media/dvb_frontend.h>
  22
  23#include "sms-cards.h"
  24
  25#include "smsdvb.h"
  26
  27DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  28
  29static LIST_HEAD(g_smsdvb_clients);
  30static DEFINE_MUTEX(g_smsdvb_clientslock);
  31
  32static u32 sms_to_guard_interval_table[] = {
  33	[0] = GUARD_INTERVAL_1_32,
  34	[1] = GUARD_INTERVAL_1_16,
  35	[2] = GUARD_INTERVAL_1_8,
  36	[3] = GUARD_INTERVAL_1_4,
  37};
  38
  39static u32 sms_to_code_rate_table[] = {
  40	[0] = FEC_1_2,
  41	[1] = FEC_2_3,
  42	[2] = FEC_3_4,
  43	[3] = FEC_5_6,
  44	[4] = FEC_7_8,
  45};
  46
  47
  48static u32 sms_to_hierarchy_table[] = {
  49	[0] = HIERARCHY_NONE,
  50	[1] = HIERARCHY_1,
  51	[2] = HIERARCHY_2,
  52	[3] = HIERARCHY_4,
  53};
  54
  55static u32 sms_to_modulation_table[] = {
  56	[0] = QPSK,
  57	[1] = QAM_16,
  58	[2] = QAM_64,
  59	[3] = DQPSK,
  60};
  61
  62
  63/* Events that may come from DVB v3 adapter */
  64static void sms_board_dvb3_event(struct smsdvb_client_t *client,
  65		enum SMS_DVB3_EVENTS event) {
  66
  67	struct smscore_device_t *coredev = client->coredev;
  68	switch (event) {
  69	case DVB3_EVENT_INIT:
  70		pr_debug("DVB3_EVENT_INIT\n");
  71		sms_board_event(coredev, BOARD_EVENT_BIND);
  72		break;
  73	case DVB3_EVENT_SLEEP:
  74		pr_debug("DVB3_EVENT_SLEEP\n");
  75		sms_board_event(coredev, BOARD_EVENT_POWER_SUSPEND);
  76		break;
  77	case DVB3_EVENT_HOTPLUG:
  78		pr_debug("DVB3_EVENT_HOTPLUG\n");
  79		sms_board_event(coredev, BOARD_EVENT_POWER_INIT);
  80		break;
  81	case DVB3_EVENT_FE_LOCK:
  82		if (client->event_fe_state != DVB3_EVENT_FE_LOCK) {
  83			client->event_fe_state = DVB3_EVENT_FE_LOCK;
  84			pr_debug("DVB3_EVENT_FE_LOCK\n");
  85			sms_board_event(coredev, BOARD_EVENT_FE_LOCK);
  86		}
  87		break;
  88	case DVB3_EVENT_FE_UNLOCK:
  89		if (client->event_fe_state != DVB3_EVENT_FE_UNLOCK) {
  90			client->event_fe_state = DVB3_EVENT_FE_UNLOCK;
  91			pr_debug("DVB3_EVENT_FE_UNLOCK\n");
  92			sms_board_event(coredev, BOARD_EVENT_FE_UNLOCK);
  93		}
  94		break;
  95	case DVB3_EVENT_UNC_OK:
  96		if (client->event_unc_state != DVB3_EVENT_UNC_OK) {
  97			client->event_unc_state = DVB3_EVENT_UNC_OK;
  98			pr_debug("DVB3_EVENT_UNC_OK\n");
  99			sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_OK);
 100		}
 101		break;
 102	case DVB3_EVENT_UNC_ERR:
 103		if (client->event_unc_state != DVB3_EVENT_UNC_ERR) {
 104			client->event_unc_state = DVB3_EVENT_UNC_ERR;
 105			pr_debug("DVB3_EVENT_UNC_ERR\n");
 106			sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_ERRORS);
 107		}
 108		break;
 109
 110	default:
 111		pr_err("Unknown dvb3 api event\n");
 112		break;
 113	}
 114}
 115
 116static void smsdvb_stats_not_ready(struct dvb_frontend *fe)
 117{
 118	struct smsdvb_client_t *client =
 119		container_of(fe, struct smsdvb_client_t, frontend);
 120	struct smscore_device_t *coredev = client->coredev;
 121	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 122	int i, n_layers;
 123
 124	switch (smscore_get_device_mode(coredev)) {
 125	case DEVICE_MODE_ISDBT:
 126	case DEVICE_MODE_ISDBT_BDA:
 127		n_layers = 4;
 128		break;
 129	default:
 130		n_layers = 1;
 131	}
 132
 133	/* Global stats */
 134	c->strength.len = 1;
 135	c->cnr.len = 1;
 136	c->strength.stat[0].scale = FE_SCALE_DECIBEL;
 137	c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
 138
 139	/* Per-layer stats */
 140	c->post_bit_error.len = n_layers;
 141	c->post_bit_count.len = n_layers;
 142	c->block_error.len = n_layers;
 143	c->block_count.len = n_layers;
 144
 145	/*
 146	 * Put all of them at FE_SCALE_NOT_AVAILABLE. They're dynamically
 147	 * changed when the stats become available.
 148	 */
 149	for (i = 0; i < n_layers; i++) {
 150		c->post_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
 151		c->post_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
 152		c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
 153		c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
 154	}
 155}
 156
 157static inline int sms_to_mode(u32 mode)
 158{
 159	switch (mode) {
 160	case 2:
 161		return TRANSMISSION_MODE_2K;
 162	case 4:
 163		return TRANSMISSION_MODE_4K;
 164	case 8:
 165		return TRANSMISSION_MODE_8K;
 166	}
 167	return TRANSMISSION_MODE_AUTO;
 168}
 169
 170static inline int sms_to_isdbt_mode(u32 mode)
 171{
 172	switch (mode) {
 173	case 1:
 174		return TRANSMISSION_MODE_2K;
 175	case 2:
 176		return TRANSMISSION_MODE_4K;
 177	case 3:
 178		return TRANSMISSION_MODE_8K;
 179	}
 180	return TRANSMISSION_MODE_AUTO;
 181}
 182
 183static inline int sms_to_isdbt_guard_interval(u32 interval)
 184{
 185	switch (interval) {
 186	case 4:
 187		return GUARD_INTERVAL_1_4;
 188	case 8:
 189		return GUARD_INTERVAL_1_8;
 190	case 16:
 191		return GUARD_INTERVAL_1_16;
 192	case 32:
 193		return GUARD_INTERVAL_1_32;
 194	}
 195	return GUARD_INTERVAL_AUTO;
 196}
 197
 198static inline int sms_to_status(u32 is_demod_locked, u32 is_rf_locked)
 199{
 200	if (is_demod_locked)
 201		return FE_HAS_SIGNAL  | FE_HAS_CARRIER | FE_HAS_VITERBI |
 202		       FE_HAS_SYNC    | FE_HAS_LOCK;
 203
 204	if (is_rf_locked)
 205		return FE_HAS_SIGNAL | FE_HAS_CARRIER;
 206
 207	return 0;
 208}
 209
 210static inline u32 sms_to_bw(u32 value)
 211{
 212	return value * 1000000;
 213}
 214
 215#define convert_from_table(value, table, defval) ({			\
 216	u32 __ret;							\
 217	if (value < ARRAY_SIZE(table))					\
 218		__ret = table[value];					\
 219	else								\
 220		__ret = defval;						\
 221	__ret;								\
 222})
 223
 224#define sms_to_guard_interval(value)					\
 225	convert_from_table(value, sms_to_guard_interval_table,		\
 226			   GUARD_INTERVAL_AUTO);
 227
 228#define sms_to_code_rate(value)						\
 229	convert_from_table(value, sms_to_code_rate_table,		\
 230			   FEC_NONE);
 231
 232#define sms_to_hierarchy(value)						\
 233	convert_from_table(value, sms_to_hierarchy_table,		\
 234			   FEC_NONE);
 235
 236#define sms_to_modulation(value)					\
 237	convert_from_table(value, sms_to_modulation_table,		\
 238			   FEC_NONE);
 239
 240static void smsdvb_update_tx_params(struct smsdvb_client_t *client,
 241				    struct sms_tx_stats *p)
 242{
 243	struct dvb_frontend *fe = &client->frontend;
 244	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 245
 246	c->frequency = p->frequency;
 247	client->fe_status = sms_to_status(p->is_demod_locked, 0);
 248	c->bandwidth_hz = sms_to_bw(p->bandwidth);
 249	c->transmission_mode = sms_to_mode(p->transmission_mode);
 250	c->guard_interval = sms_to_guard_interval(p->guard_interval);
 251	c->code_rate_HP = sms_to_code_rate(p->code_rate);
 252	c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
 253	c->hierarchy = sms_to_hierarchy(p->hierarchy);
 254	c->modulation = sms_to_modulation(p->constellation);
 255}
 256
 257static void smsdvb_update_per_slices(struct smsdvb_client_t *client,
 258				     struct RECEPTION_STATISTICS_PER_SLICES_S *p)
 259{
 260	struct dvb_frontend *fe = &client->frontend;
 261	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 262	u64 tmp;
 263
 264	client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
 265	c->modulation = sms_to_modulation(p->constellation);
 266
 267	/* signal Strength, in DBm */
 268	c->strength.stat[0].uvalue = p->in_band_power * 1000;
 269
 270	/* Carrier to noise ratio, in DB */
 271	c->cnr.stat[0].svalue = p->snr * 1000;
 272
 273	/* PER/BER requires demod lock */
 274	if (!p->is_demod_locked)
 275		return;
 276
 277	/* TS PER */
 278	client->last_per = c->block_error.stat[0].uvalue;
 279	c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 280	c->block_count.stat[0].scale = FE_SCALE_COUNTER;
 281	c->block_error.stat[0].uvalue += p->ets_packets;
 282	c->block_count.stat[0].uvalue += p->ets_packets + p->ts_packets;
 283
 284	/* ber */
 285	c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 286	c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 287	c->post_bit_error.stat[0].uvalue += p->ber_error_count;
 288	c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
 289
 290	/* Legacy PER/BER */
 291	tmp = p->ets_packets * 65535ULL;
 292	if (p->ts_packets + p->ets_packets)
 293		do_div(tmp, p->ts_packets + p->ets_packets);
 294	client->legacy_per = tmp;
 295}
 296
 297static void smsdvb_update_dvb_stats(struct smsdvb_client_t *client,
 298				    struct sms_stats *p)
 299{
 300	struct dvb_frontend *fe = &client->frontend;
 301	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 302
 303	if (client->prt_dvb_stats)
 304		client->prt_dvb_stats(client->debug_data, p);
 305
 306	client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
 307
 308	/* Update DVB modulation parameters */
 309	c->frequency = p->frequency;
 310	client->fe_status = sms_to_status(p->is_demod_locked, 0);
 311	c->bandwidth_hz = sms_to_bw(p->bandwidth);
 312	c->transmission_mode = sms_to_mode(p->transmission_mode);
 313	c->guard_interval = sms_to_guard_interval(p->guard_interval);
 314	c->code_rate_HP = sms_to_code_rate(p->code_rate);
 315	c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
 316	c->hierarchy = sms_to_hierarchy(p->hierarchy);
 317	c->modulation = sms_to_modulation(p->constellation);
 318
 319	/* update reception data */
 320	c->lna = p->is_external_lna_on ? 1 : 0;
 321
 322	/* Carrier to noise ratio, in DB */
 323	c->cnr.stat[0].svalue = p->SNR * 1000;
 324
 325	/* signal Strength, in DBm */
 326	c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
 327
 328	/* PER/BER requires demod lock */
 329	if (!p->is_demod_locked)
 330		return;
 331
 332	/* TS PER */
 333	client->last_per = c->block_error.stat[0].uvalue;
 334	c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 335	c->block_count.stat[0].scale = FE_SCALE_COUNTER;
 336	c->block_error.stat[0].uvalue += p->error_ts_packets;
 337	c->block_count.stat[0].uvalue += p->total_ts_packets;
 338
 339	/* ber */
 340	c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 341	c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 342	c->post_bit_error.stat[0].uvalue += p->ber_error_count;
 343	c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
 344
 345	/* Legacy PER/BER */
 346	client->legacy_ber = p->ber;
 347};
 348
 349static void smsdvb_update_isdbt_stats(struct smsdvb_client_t *client,
 350				      struct sms_isdbt_stats *p)
 351{
 352	struct dvb_frontend *fe = &client->frontend;
 353	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 354	struct sms_isdbt_layer_stats *lr;
 355	int i, n_layers;
 356
 357	if (client->prt_isdb_stats)
 358		client->prt_isdb_stats(client->debug_data, p);
 359
 360	client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
 361
 362	/*
 363	 * Firmware 2.1 seems to report only lock status and
 364	 * signal strength. The signal strength indicator is at the
 365	 * wrong field.
 366	 */
 367	if (p->statistics_type == 0) {
 368		c->strength.stat[0].uvalue = ((s32)p->transmission_mode) * 1000;
 369		c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
 370		return;
 371	}
 372
 373	/* Update ISDB-T transmission parameters */
 374	c->frequency = p->frequency;
 375	c->bandwidth_hz = sms_to_bw(p->bandwidth);
 376	c->transmission_mode = sms_to_isdbt_mode(p->transmission_mode);
 377	c->guard_interval = sms_to_isdbt_guard_interval(p->guard_interval);
 378	c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
 379	n_layers = p->num_of_layers;
 380	if (n_layers < 1)
 381		n_layers = 1;
 382	if (n_layers > 3)
 383		n_layers = 3;
 384	c->isdbt_layer_enabled = 0;
 385
 386	/* update reception data */
 387	c->lna = p->is_external_lna_on ? 1 : 0;
 388
 389	/* Carrier to noise ratio, in DB */
 390	c->cnr.stat[0].svalue = p->SNR * 1000;
 391
 392	/* signal Strength, in DBm */
 393	c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
 394
 395	/* PER/BER and per-layer stats require demod lock */
 396	if (!p->is_demod_locked)
 397		return;
 398
 399	client->last_per = c->block_error.stat[0].uvalue;
 400
 401	/* Clears global counters, as the code below will sum it again */
 402	c->block_error.stat[0].uvalue = 0;
 403	c->block_count.stat[0].uvalue = 0;
 404	c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 405	c->block_count.stat[0].scale = FE_SCALE_COUNTER;
 406	c->post_bit_error.stat[0].uvalue = 0;
 407	c->post_bit_count.stat[0].uvalue = 0;
 408	c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 409	c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 410
 411	for (i = 0; i < n_layers; i++) {
 412		lr = &p->layer_info[i];
 413
 414		/* Update per-layer transmission parameters */
 415		if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
 416			c->isdbt_layer_enabled |= 1 << i;
 417			c->layer[i].segment_count = lr->number_of_segments;
 418		} else {
 419			continue;
 420		}
 421		c->layer[i].modulation = sms_to_modulation(lr->constellation);
 422		c->layer[i].fec = sms_to_code_rate(lr->code_rate);
 423
 424		/* Time interleaving */
 425		c->layer[i].interleaving = (u8)lr->ti_ldepth_i;
 426
 427		/* TS PER */
 428		c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
 429		c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
 430		c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
 431		c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
 432
 433		/* Update global PER counter */
 434		c->block_error.stat[0].uvalue += lr->error_ts_packets;
 435		c->block_count.stat[0].uvalue += lr->total_ts_packets;
 436
 437		/* BER */
 438		c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
 439		c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
 440		c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
 441		c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
 442
 443		/* Update global BER counter */
 444		c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
 445		c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
 446	}
 447}
 448
 449static void smsdvb_update_isdbt_stats_ex(struct smsdvb_client_t *client,
 450					 struct sms_isdbt_stats_ex *p)
 451{
 452	struct dvb_frontend *fe = &client->frontend;
 453	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 454	struct sms_isdbt_layer_stats *lr;
 455	int i, n_layers;
 456
 457	if (client->prt_isdb_stats_ex)
 458		client->prt_isdb_stats_ex(client->debug_data, p);
 459
 460	/* Update ISDB-T transmission parameters */
 461	c->frequency = p->frequency;
 462	client->fe_status = sms_to_status(p->is_demod_locked, 0);
 463	c->bandwidth_hz = sms_to_bw(p->bandwidth);
 464	c->transmission_mode = sms_to_isdbt_mode(p->transmission_mode);
 465	c->guard_interval = sms_to_isdbt_guard_interval(p->guard_interval);
 466	c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
 467	n_layers = p->num_of_layers;
 468	if (n_layers < 1)
 469		n_layers = 1;
 470	if (n_layers > 3)
 471		n_layers = 3;
 472	c->isdbt_layer_enabled = 0;
 473
 474	/* update reception data */
 475	c->lna = p->is_external_lna_on ? 1 : 0;
 476
 477	/* Carrier to noise ratio, in DB */
 478	c->cnr.stat[0].svalue = p->SNR * 1000;
 479
 480	/* signal Strength, in DBm */
 481	c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
 482
 483	/* PER/BER and per-layer stats require demod lock */
 484	if (!p->is_demod_locked)
 485		return;
 486
 487	client->last_per = c->block_error.stat[0].uvalue;
 488
 489	/* Clears global counters, as the code below will sum it again */
 490	c->block_error.stat[0].uvalue = 0;
 491	c->block_count.stat[0].uvalue = 0;
 492	c->block_error.stat[0].scale = FE_SCALE_COUNTER;
 493	c->block_count.stat[0].scale = FE_SCALE_COUNTER;
 494	c->post_bit_error.stat[0].uvalue = 0;
 495	c->post_bit_count.stat[0].uvalue = 0;
 496	c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
 497	c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
 498
 499	c->post_bit_error.len = n_layers + 1;
 500	c->post_bit_count.len = n_layers + 1;
 501	c->block_error.len = n_layers + 1;
 502	c->block_count.len = n_layers + 1;
 503	for (i = 0; i < n_layers; i++) {
 504		lr = &p->layer_info[i];
 505
 506		/* Update per-layer transmission parameters */
 507		if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
 508			c->isdbt_layer_enabled |= 1 << i;
 509			c->layer[i].segment_count = lr->number_of_segments;
 510		} else {
 511			continue;
 512		}
 513		c->layer[i].modulation = sms_to_modulation(lr->constellation);
 514		c->layer[i].fec = sms_to_code_rate(lr->code_rate);
 515
 516		/* Time interleaving */
 517		c->layer[i].interleaving = (u8)lr->ti_ldepth_i;
 518
 519		/* TS PER */
 520		c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
 521		c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
 522		c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
 523		c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
 524
 525		/* Update global PER counter */
 526		c->block_error.stat[0].uvalue += lr->error_ts_packets;
 527		c->block_count.stat[0].uvalue += lr->total_ts_packets;
 528
 529		/* ber */
 530		c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
 531		c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
 532		c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
 533		c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
 534
 535		/* Update global ber counter */
 536		c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
 537		c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
 538	}
 539}
 540
 541static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
 542{
 543	struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
 544	struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) (((u8 *) cb->p)
 545			+ cb->offset);
 546	void *p = phdr + 1;
 547	struct dvb_frontend *fe = &client->frontend;
 548	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 549	bool is_status_update = false;
 550
 551	switch (phdr->msg_type) {
 552	case MSG_SMS_DVBT_BDA_DATA:
 553		/*
 554		 * Only feed data to dvb demux if are there any feed listening
 555		 * to it and if the device has tuned
 556		 */
 557		if (client->feed_users && client->has_tuned)
 558			dvb_dmx_swfilter(&client->demux, p,
 559					 cb->size - sizeof(struct sms_msg_hdr));
 560		break;
 561
 562	case MSG_SMS_RF_TUNE_RES:
 563	case MSG_SMS_ISDBT_TUNE_RES:
 564		complete(&client->tune_done);
 565		break;
 566
 567	case MSG_SMS_SIGNAL_DETECTED_IND:
 568		client->fe_status = FE_HAS_SIGNAL  | FE_HAS_CARRIER |
 569				    FE_HAS_VITERBI | FE_HAS_SYNC    |
 570				    FE_HAS_LOCK;
 571
 572		is_status_update = true;
 573		break;
 574
 575	case MSG_SMS_NO_SIGNAL_IND:
 576		client->fe_status = 0;
 577
 578		is_status_update = true;
 579		break;
 580
 581	case MSG_SMS_TRANSMISSION_IND:
 582		smsdvb_update_tx_params(client, p);
 583
 584		is_status_update = true;
 585		break;
 586
 587	case MSG_SMS_HO_PER_SLICES_IND:
 588		smsdvb_update_per_slices(client, p);
 589
 590		is_status_update = true;
 591		break;
 592
 593	case MSG_SMS_GET_STATISTICS_RES:
 594		switch (smscore_get_device_mode(client->coredev)) {
 595		case DEVICE_MODE_ISDBT:
 596		case DEVICE_MODE_ISDBT_BDA:
 597			smsdvb_update_isdbt_stats(client, p);
 598			break;
 599		default:
 600			/* Skip sms_msg_statistics_info:request_result field */
 601			smsdvb_update_dvb_stats(client, p + sizeof(u32));
 602		}
 603
 604		is_status_update = true;
 605		break;
 606
 607	/* Only for ISDB-T */
 608	case MSG_SMS_GET_STATISTICS_EX_RES:
 609		/* Skip sms_msg_statistics_info:request_result field? */
 610		smsdvb_update_isdbt_stats_ex(client, p + sizeof(u32));
 611		is_status_update = true;
 612		break;
 613	default:
 614		pr_debug("message not handled\n");
 615	}
 616	smscore_putbuffer(client->coredev, cb);
 617
 618	if (is_status_update) {
 619		if (client->fe_status & FE_HAS_LOCK) {
 620			sms_board_dvb3_event(client, DVB3_EVENT_FE_LOCK);
 621			if (client->last_per == c->block_error.stat[0].uvalue)
 622				sms_board_dvb3_event(client, DVB3_EVENT_UNC_OK);
 623			else
 624				sms_board_dvb3_event(client, DVB3_EVENT_UNC_ERR);
 625			client->has_tuned = true;
 626		} else {
 627			smsdvb_stats_not_ready(fe);
 628			client->has_tuned = false;
 629			sms_board_dvb3_event(client, DVB3_EVENT_FE_UNLOCK);
 630		}
 631		complete(&client->stats_done);
 632	}
 633
 634	return 0;
 635}
 636
 637static void smsdvb_media_device_unregister(struct smsdvb_client_t *client)
 638{
 639#ifdef CONFIG_MEDIA_CONTROLLER_DVB
 640	struct smscore_device_t *coredev = client->coredev;
 641
 642	if (!coredev->media_dev)
 643		return;
 644	media_device_unregister(coredev->media_dev);
 645	media_device_cleanup(coredev->media_dev);
 646	kfree(coredev->media_dev);
 647	coredev->media_dev = NULL;
 648#endif
 649}
 650
 651static void smsdvb_unregister_client(struct smsdvb_client_t *client)
 652{
 653	/* must be called under clientslock */
 654
 655	list_del(&client->entry);
 656
 657	smsdvb_debugfs_release(client);
 658	smscore_unregister_client(client->smsclient);
 659	dvb_unregister_frontend(&client->frontend);
 660	dvb_dmxdev_release(&client->dmxdev);
 661	dvb_dmx_release(&client->demux);
 662	smsdvb_media_device_unregister(client);
 663	dvb_unregister_adapter(&client->adapter);
 664	kfree(client);
 665}
 666
 667static void smsdvb_onremove(void *context)
 668{
 669	mutex_lock(&g_smsdvb_clientslock);
 670
 671	smsdvb_unregister_client((struct smsdvb_client_t *) context);
 672
 673	mutex_unlock(&g_smsdvb_clientslock);
 674}
 675
 676static int smsdvb_start_feed(struct dvb_demux_feed *feed)
 677{
 678	struct smsdvb_client_t *client =
 679		container_of(feed->demux, struct smsdvb_client_t, demux);
 680	struct sms_msg_data pid_msg;
 681
 682	pr_debug("add pid %d(%x)\n",
 683		  feed->pid, feed->pid);
 684
 685	client->feed_users++;
 686
 687	pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
 688	pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
 689	pid_msg.x_msg_header.msg_flags = 0;
 690	pid_msg.x_msg_header.msg_type  = MSG_SMS_ADD_PID_FILTER_REQ;
 691	pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
 692	pid_msg.msg_data = feed->pid;
 693
 694	return smsclient_sendrequest(client->smsclient,
 695				     &pid_msg, sizeof(pid_msg));
 696}
 697
 698static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
 699{
 700	struct smsdvb_client_t *client =
 701		container_of(feed->demux, struct smsdvb_client_t, demux);
 702	struct sms_msg_data pid_msg;
 703
 704	pr_debug("remove pid %d(%x)\n",
 705		  feed->pid, feed->pid);
 706
 707	client->feed_users--;
 708
 709	pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
 710	pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
 711	pid_msg.x_msg_header.msg_flags = 0;
 712	pid_msg.x_msg_header.msg_type  = MSG_SMS_REMOVE_PID_FILTER_REQ;
 713	pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
 714	pid_msg.msg_data = feed->pid;
 715
 716	return smsclient_sendrequest(client->smsclient,
 717				     &pid_msg, sizeof(pid_msg));
 718}
 719
 720static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
 721					void *buffer, size_t size,
 722					struct completion *completion)
 723{
 724	int rc;
 725
 726	rc = smsclient_sendrequest(client->smsclient, buffer, size);
 727	if (rc < 0)
 728		return rc;
 729
 730	return wait_for_completion_timeout(completion,
 731					   msecs_to_jiffies(2000)) ?
 732						0 : -ETIME;
 733}
 734
 735static int smsdvb_send_statistics_request(struct smsdvb_client_t *client)
 736{
 737	int rc;
 738	struct sms_msg_hdr msg;
 739
 740	/* Don't request stats too fast */
 741	if (client->get_stats_jiffies &&
 742	   (!time_after(jiffies, client->get_stats_jiffies)))
 743		return 0;
 744	client->get_stats_jiffies = jiffies + msecs_to_jiffies(100);
 745
 746	msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
 747	msg.msg_dst_id = HIF_TASK;
 748	msg.msg_flags = 0;
 749	msg.msg_length = sizeof(msg);
 750
 751	switch (smscore_get_device_mode(client->coredev)) {
 752	case DEVICE_MODE_ISDBT:
 753	case DEVICE_MODE_ISDBT_BDA:
 754		/*
 755		* Check for firmware version, to avoid breaking for old cards
 756		*/
 757		if (client->coredev->fw_version >= 0x800)
 758			msg.msg_type = MSG_SMS_GET_STATISTICS_EX_REQ;
 759		else
 760			msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
 761		break;
 762	default:
 763		msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
 764	}
 765
 766	rc = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
 767					 &client->stats_done);
 768
 769	return rc;
 770}
 771
 772static inline int led_feedback(struct smsdvb_client_t *client)
 773{
 774	if (!(client->fe_status & FE_HAS_LOCK))
 775		return sms_board_led_feedback(client->coredev, SMS_LED_OFF);
 776
 777	return sms_board_led_feedback(client->coredev,
 778				     (client->legacy_ber == 0) ?
 779				     SMS_LED_HI : SMS_LED_LO);
 780}
 781
 782static int smsdvb_read_status(struct dvb_frontend *fe, enum fe_status *stat)
 783{
 784	int rc;
 785	struct smsdvb_client_t *client;
 786	client = container_of(fe, struct smsdvb_client_t, frontend);
 787
 788	rc = smsdvb_send_statistics_request(client);
 789
 790	*stat = client->fe_status;
 791
 792	led_feedback(client);
 793
 794	return rc;
 795}
 796
 797static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
 798{
 799	int rc;
 800	struct smsdvb_client_t *client;
 801
 802	client = container_of(fe, struct smsdvb_client_t, frontend);
 803
 804	rc = smsdvb_send_statistics_request(client);
 805
 806	*ber = client->legacy_ber;
 807
 808	led_feedback(client);
 809
 810	return rc;
 811}
 812
 813static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 814{
 815	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 816	int rc;
 817	s32 power = (s32) c->strength.stat[0].uvalue;
 818	struct smsdvb_client_t *client;
 819
 820	client = container_of(fe, struct smsdvb_client_t, frontend);
 821
 822	rc = smsdvb_send_statistics_request(client);
 823
 824	if (power < -95)
 825		*strength = 0;
 826		else if (power > -29)
 827			*strength = 65535;
 828		else
 829			*strength = (power + 95) * 65535 / 66;
 830
 831	led_feedback(client);
 832
 833	return rc;
 834}
 835
 836static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
 837{
 838	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 839	int rc;
 840	struct smsdvb_client_t *client;
 841
 842	client = container_of(fe, struct smsdvb_client_t, frontend);
 843
 844	rc = smsdvb_send_statistics_request(client);
 845
 846	/* Preferred scale for SNR with legacy API: 0.1 dB */
 847	*snr = ((u32)c->cnr.stat[0].svalue) / 100;
 848
 849	led_feedback(client);
 850
 851	return rc;
 852}
 853
 854static int smsdvb_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
 855{
 856	int rc;
 857	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 858	struct smsdvb_client_t *client;
 859
 860	client = container_of(fe, struct smsdvb_client_t, frontend);
 861
 862	rc = smsdvb_send_statistics_request(client);
 863
 864	*ucblocks = c->block_error.stat[0].uvalue;
 865
 866	led_feedback(client);
 867
 868	return rc;
 869}
 870
 871static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
 872				    struct dvb_frontend_tune_settings *tune)
 873{
 874	pr_debug("\n");
 875
 876	tune->min_delay_ms = 400;
 877	tune->step_size = 250000;
 878	tune->max_drift = 0;
 879	return 0;
 880}
 881
 882static int smsdvb_dvbt_set_frontend(struct dvb_frontend *fe)
 883{
 884	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 885	struct smsdvb_client_t *client =
 886		container_of(fe, struct smsdvb_client_t, frontend);
 887
 888	struct {
 889		struct sms_msg_hdr	msg;
 890		u32		Data[3];
 891	} msg;
 892
 893	int ret;
 894
 895	client->fe_status = 0;
 896	client->event_fe_state = -1;
 897	client->event_unc_state = -1;
 898	fe->dtv_property_cache.delivery_system = SYS_DVBT;
 899
 900	msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
 901	msg.msg.msg_dst_id = HIF_TASK;
 902	msg.msg.msg_flags = 0;
 903	msg.msg.msg_type = MSG_SMS_RF_TUNE_REQ;
 904	msg.msg.msg_length = sizeof(msg);
 905	msg.Data[0] = c->frequency;
 906	msg.Data[2] = 12000000;
 907
 908	pr_debug("%s: freq %d band %d\n", __func__, c->frequency,
 909		 c->bandwidth_hz);
 910
 911	switch (c->bandwidth_hz / 1000000) {
 912	case 8:
 913		msg.Data[1] = BW_8_MHZ;
 914		break;
 915	case 7:
 916		msg.Data[1] = BW_7_MHZ;
 917		break;
 918	case 6:
 919		msg.Data[1] = BW_6_MHZ;
 920		break;
 921	case 0:
 922		return -EOPNOTSUPP;
 923	default:
 924		return -EINVAL;
 925	}
 926	/* Disable LNA, if any. An error is returned if no LNA is present */
 927	ret = sms_board_lna_control(client->coredev, 0);
 928	if (ret == 0) {
 929		enum fe_status status;
 930
 931		/* tune with LNA off at first */
 932		ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
 933						  &client->tune_done);
 934
 935		smsdvb_read_status(fe, &status);
 936
 937		if (status & FE_HAS_LOCK)
 938			return ret;
 939
 940		/* previous tune didn't lock - enable LNA and tune again */
 941		sms_board_lna_control(client->coredev, 1);
 942	}
 943
 944	return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
 945					   &client->tune_done);
 946}
 947
 948static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
 949{
 950	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 951	struct smsdvb_client_t *client =
 952		container_of(fe, struct smsdvb_client_t, frontend);
 953	int board_id = smscore_get_board_id(client->coredev);
 954	struct sms_board *board = sms_get_board(board_id);
 955	enum sms_device_type_st type = board->type;
 956	int ret;
 957
 958	struct {
 959		struct sms_msg_hdr	msg;
 960		u32		Data[4];
 961	} msg;
 962
 963	fe->dtv_property_cache.delivery_system = SYS_ISDBT;
 964
 965	msg.msg.msg_src_id  = DVBT_BDA_CONTROL_MSG_ID;
 966	msg.msg.msg_dst_id  = HIF_TASK;
 967	msg.msg.msg_flags  = 0;
 968	msg.msg.msg_type   = MSG_SMS_ISDBT_TUNE_REQ;
 969	msg.msg.msg_length = sizeof(msg);
 970
 971	if (c->isdbt_sb_segment_idx == -1)
 972		c->isdbt_sb_segment_idx = 0;
 973
 974	if (!c->isdbt_layer_enabled)
 975		c->isdbt_layer_enabled = 7;
 976
 977	msg.Data[0] = c->frequency;
 978	msg.Data[1] = BW_ISDBT_1SEG;
 979	msg.Data[2] = 12000000;
 980	msg.Data[3] = c->isdbt_sb_segment_idx;
 981
 982	if (c->isdbt_partial_reception) {
 983		if ((type == SMS_PELE || type == SMS_RIO) &&
 984		    c->isdbt_sb_segment_count > 3)
 985			msg.Data[1] = BW_ISDBT_13SEG;
 986		else if (c->isdbt_sb_segment_count > 1)
 987			msg.Data[1] = BW_ISDBT_3SEG;
 988	} else if (type == SMS_PELE || type == SMS_RIO)
 989		msg.Data[1] = BW_ISDBT_13SEG;
 990
 991	c->bandwidth_hz = 6000000;
 992
 993	pr_debug("freq %d segwidth %d segindex %d\n",
 994		 c->frequency, c->isdbt_sb_segment_count,
 995		 c->isdbt_sb_segment_idx);
 996
 997	/* Disable LNA, if any. An error is returned if no LNA is present */
 998	ret = sms_board_lna_control(client->coredev, 0);
 999	if (ret == 0) {
1000		enum fe_status status;
1001
1002		/* tune with LNA off at first */
1003		ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
1004						  &client->tune_done);
1005
1006		smsdvb_read_status(fe, &status);
1007
1008		if (status & FE_HAS_LOCK)
1009			return ret;
1010
1011		/* previous tune didn't lock - enable LNA and tune again */
1012		sms_board_lna_control(client->coredev, 1);
1013	}
1014	return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
1015					   &client->tune_done);
1016}
1017
1018static 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
1043static 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
1054static 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
1067static void smsdvb_release(struct dvb_frontend *fe)
1068{
1069	/* do nothing */
1070}
1071
1072static 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
1103static 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
1214media_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
1221client_error:
1222	dvb_unregister_frontend(&client->frontend);
1223
1224frontend_error:
1225	dvb_dmxdev_release(&client->dmxdev);
1226
1227dmxdev_error:
1228	dvb_dmx_release(&client->demux);
1229
1230dvbdmx_error:
1231	smsdvb_media_device_unregister(client);
1232	dvb_unregister_adapter(&client->adapter);
1233
1234adapter_error:
1235	kfree(client);
1236	return rc;
1237}
1238
1239static int __init smsdvb_module_init(void)
1240{
1241	int rc;
1242
1243	smsdvb_debugfs_register();
1244
1245	rc = smscore_register_hotplug(smsdvb_hotplug);
1246	if (rc)
1247		smsdvb_debugfs_unregister();
1248
1249	pr_debug("\n");
1250
1251	return rc;
1252}
1253
1254static void __exit smsdvb_module_exit(void)
1255{
1256	smscore_unregister_hotplug(smsdvb_hotplug);
1257
1258	mutex_lock(&g_smsdvb_clientslock);
1259
1260	while (!list_empty(&g_smsdvb_clients))
1261		smsdvb_unregister_client((struct smsdvb_client_t *)g_smsdvb_clients.next);
1262
1263	smsdvb_debugfs_unregister();
1264
1265	mutex_unlock(&g_smsdvb_clientslock);
1266}
1267
1268module_init(smsdvb_module_init);
1269module_exit(smsdvb_module_exit);
1270
1271MODULE_DESCRIPTION("SMS DVB subsystem adaptation module");
1272MODULE_AUTHOR("Siano Mobile Silicon, Inc. <uris@siano-ms.com>");
1273MODULE_LICENSE("GPL");