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WIP FPC-III support
[linux/fpc-iii.git] / drivers / media / common / siano / smsdvb-main.c
blobae17407e477a49f1b8977d2de34e35e57a4980cd
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /****************************************************************
3
4 Siano Mobile Silicon, Inc.
5 MDTV receiver kernel modules.
6 Copyright (C) 2006-2008, Uri Shkolnik
7
8
9 ****************************************************************/
10
11 #include "smscoreapi.h"
12
13 #include <linux/module.h>
14 #include <linux/slab.h>
15 #include <linux/init.h>
16 #include <asm/div64.h>
17
18 #include <media/dmxdev.h>
19 #include <media/dvbdev.h>
20 #include <media/dvb_demux.h>
21 #include <media/dvb_frontend.h>
22
23 #include "sms-cards.h"
24
25 #include "smsdvb.h"
26
27 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
28
29 static struct list_head g_smsdvb_clients;
30 static struct mutex g_smsdvb_clientslock;
31
32 static u32 sms_to_guard_interval_table[] = {
33 [0] = GUARD_INTERVAL_1_32,
34 [1] = GUARD_INTERVAL_1_16,
35 [2] = GUARD_INTERVAL_1_8,
36 [3] = GUARD_INTERVAL_1_4,
37 };
38
39 static u32 sms_to_code_rate_table[] = {
40 [0] = FEC_1_2,
41 [1] = FEC_2_3,
42 [2] = FEC_3_4,
43 [3] = FEC_5_6,
44 [4] = FEC_7_8,
45 };
46
47
48 static u32 sms_to_hierarchy_table[] = {
49 [0] = HIERARCHY_NONE,
50 [1] = HIERARCHY_1,
51 [2] = HIERARCHY_2,
52 [3] = HIERARCHY_4,
53 };
54
55 static u32 sms_to_modulation_table[] = {
56 [0] = QPSK,
57 [1] = QAM_16,
58 [2] = QAM_64,
59 [3] = DQPSK,
60 };
61
62
63 /* Events that may come from DVB v3 adapter */
64 static void sms_board_dvb3_event(struct smsdvb_client_t *client,
65 enum SMS_DVB3_EVENTS event) {
66
67 struct smscore_device_t *coredev = client->coredev;
68 switch (event) {
69 case DVB3_EVENT_INIT:
70 pr_debug("DVB3_EVENT_INIT\n");
71 sms_board_event(coredev, BOARD_EVENT_BIND);
72 break;
73 case DVB3_EVENT_SLEEP:
74 pr_debug("DVB3_EVENT_SLEEP\n");
75 sms_board_event(coredev, BOARD_EVENT_POWER_SUSPEND);
76 break;
77 case DVB3_EVENT_HOTPLUG:
78 pr_debug("DVB3_EVENT_HOTPLUG\n");
79 sms_board_event(coredev, BOARD_EVENT_POWER_INIT);
80 break;
81 case DVB3_EVENT_FE_LOCK:
82 if (client->event_fe_state != DVB3_EVENT_FE_LOCK) {
83 client->event_fe_state = DVB3_EVENT_FE_LOCK;
84 pr_debug("DVB3_EVENT_FE_LOCK\n");
85 sms_board_event(coredev, BOARD_EVENT_FE_LOCK);
86 }
87 break;
88 case DVB3_EVENT_FE_UNLOCK:
89 if (client->event_fe_state != DVB3_EVENT_FE_UNLOCK) {
90 client->event_fe_state = DVB3_EVENT_FE_UNLOCK;
91 pr_debug("DVB3_EVENT_FE_UNLOCK\n");
92 sms_board_event(coredev, BOARD_EVENT_FE_UNLOCK);
93 }
94 break;
95 case DVB3_EVENT_UNC_OK:
96 if (client->event_unc_state != DVB3_EVENT_UNC_OK) {
97 client->event_unc_state = DVB3_EVENT_UNC_OK;
98 pr_debug("DVB3_EVENT_UNC_OK\n");
99 sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_OK);
100 }
101 break;
102 case DVB3_EVENT_UNC_ERR:
103 if (client->event_unc_state != DVB3_EVENT_UNC_ERR) {
104 client->event_unc_state = DVB3_EVENT_UNC_ERR;
105 pr_debug("DVB3_EVENT_UNC_ERR\n");
106 sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_ERRORS);
107 }
108 break;
109
110 default:
111 pr_err("Unknown dvb3 api event\n");
112 break;
113 }
114 }
115
116 static void smsdvb_stats_not_ready(struct dvb_frontend *fe)
117 {
118 struct smsdvb_client_t *client =
119 container_of(fe, struct smsdvb_client_t, frontend);
120 struct smscore_device_t *coredev = client->coredev;
121 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
122 int i, n_layers;
123
124 switch (smscore_get_device_mode(coredev)) {
125 case DEVICE_MODE_ISDBT:
126 case DEVICE_MODE_ISDBT_BDA:
127 n_layers = 4;
128 break;
129 default:
130 n_layers = 1;
131 }
132
133 /* Global stats */
134 c->strength.len = 1;
135 c->cnr.len = 1;
136 c->strength.stat[0].scale = FE_SCALE_DECIBEL;
137 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
138
139 /* Per-layer stats */
140 c->post_bit_error.len = n_layers;
141 c->post_bit_count.len = n_layers;
142 c->block_error.len = n_layers;
143 c->block_count.len = n_layers;
144
145 /*
146 * Put all of them at FE_SCALE_NOT_AVAILABLE. They're dynamically
147 * changed when the stats become available.
148 */
149 for (i = 0; i < n_layers; i++) {
150 c->post_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
151 c->post_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
152 c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
153 c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
154 }
155 }
156
157 static inline int sms_to_mode(u32 mode)
158 {
159 switch (mode) {
160 case 2:
161 return TRANSMISSION_MODE_2K;
162 case 4:
163 return TRANSMISSION_MODE_4K;
164 case 8:
165 return TRANSMISSION_MODE_8K;
166 }
167 return TRANSMISSION_MODE_AUTO;
168 }
169
170 static inline int sms_to_status(u32 is_demod_locked, u32 is_rf_locked)
171 {
172 if (is_demod_locked)
173 return FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
174 FE_HAS_SYNC | FE_HAS_LOCK;
175
176 if (is_rf_locked)
177 return FE_HAS_SIGNAL | FE_HAS_CARRIER;
178
179 return 0;
180 }
181
182 static inline u32 sms_to_bw(u32 value)
183 {
184 return value * 1000000;
185 }
186
187 #define convert_from_table(value, table, defval) ({ \
188 u32 __ret; \
189 if (value < ARRAY_SIZE(table)) \
190 __ret = table[value]; \
191 else \
192 __ret = defval; \
193 __ret; \
194 })
195
196 #define sms_to_guard_interval(value) \
197 convert_from_table(value, sms_to_guard_interval_table, \
198 GUARD_INTERVAL_AUTO);
199
200 #define sms_to_code_rate(value) \
201 convert_from_table(value, sms_to_code_rate_table, \
202 FEC_NONE);
203
204 #define sms_to_hierarchy(value) \
205 convert_from_table(value, sms_to_hierarchy_table, \
206 FEC_NONE);
207
208 #define sms_to_modulation(value) \
209 convert_from_table(value, sms_to_modulation_table, \
210 FEC_NONE);
211
212 static void smsdvb_update_tx_params(struct smsdvb_client_t *client,
213 struct sms_tx_stats *p)
214 {
215 struct dvb_frontend *fe = &client->frontend;
216 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
217
218 c->frequency = p->frequency;
219 client->fe_status = sms_to_status(p->is_demod_locked, 0);
220 c->bandwidth_hz = sms_to_bw(p->bandwidth);
221 c->transmission_mode = sms_to_mode(p->transmission_mode);
222 c->guard_interval = sms_to_guard_interval(p->guard_interval);
223 c->code_rate_HP = sms_to_code_rate(p->code_rate);
224 c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
225 c->hierarchy = sms_to_hierarchy(p->hierarchy);
226 c->modulation = sms_to_modulation(p->constellation);
227 }
228
229 static void smsdvb_update_per_slices(struct smsdvb_client_t *client,
230 struct RECEPTION_STATISTICS_PER_SLICES_S *p)
231 {
232 struct dvb_frontend *fe = &client->frontend;
233 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
234 u64 tmp;
235
236 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
237 c->modulation = sms_to_modulation(p->constellation);
238
239 /* signal Strength, in DBm */
240 c->strength.stat[0].uvalue = p->in_band_power * 1000;
241
242 /* Carrier to noise ratio, in DB */
243 c->cnr.stat[0].svalue = p->snr * 1000;
244
245 /* PER/BER requires demod lock */
246 if (!p->is_demod_locked)
247 return;
248
249 /* TS PER */
250 client->last_per = c->block_error.stat[0].uvalue;
251 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
252 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
253 c->block_error.stat[0].uvalue += p->ets_packets;
254 c->block_count.stat[0].uvalue += p->ets_packets + p->ts_packets;
255
256 /* ber */
257 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
258 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
259 c->post_bit_error.stat[0].uvalue += p->ber_error_count;
260 c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
261
262 /* Legacy PER/BER */
263 tmp = p->ets_packets * 65535ULL;
264 if (p->ts_packets + p->ets_packets)
265 do_div(tmp, p->ts_packets + p->ets_packets);
266 client->legacy_per = tmp;
267 }
268
269 static void smsdvb_update_dvb_stats(struct smsdvb_client_t *client,
270 struct sms_stats *p)
271 {
272 struct dvb_frontend *fe = &client->frontend;
273 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
274
275 if (client->prt_dvb_stats)
276 client->prt_dvb_stats(client->debug_data, p);
277
278 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
279
280 /* Update DVB modulation parameters */
281 c->frequency = p->frequency;
282 client->fe_status = sms_to_status(p->is_demod_locked, 0);
283 c->bandwidth_hz = sms_to_bw(p->bandwidth);
284 c->transmission_mode = sms_to_mode(p->transmission_mode);
285 c->guard_interval = sms_to_guard_interval(p->guard_interval);
286 c->code_rate_HP = sms_to_code_rate(p->code_rate);
287 c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
288 c->hierarchy = sms_to_hierarchy(p->hierarchy);
289 c->modulation = sms_to_modulation(p->constellation);
290
291 /* update reception data */
292 c->lna = p->is_external_lna_on ? 1 : 0;
293
294 /* Carrier to noise ratio, in DB */
295 c->cnr.stat[0].svalue = p->SNR * 1000;
296
297 /* signal Strength, in DBm */
298 c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
299
300 /* PER/BER requires demod lock */
301 if (!p->is_demod_locked)
302 return;
303
304 /* TS PER */
305 client->last_per = c->block_error.stat[0].uvalue;
306 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
307 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
308 c->block_error.stat[0].uvalue += p->error_ts_packets;
309 c->block_count.stat[0].uvalue += p->total_ts_packets;
310
311 /* ber */
312 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
313 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
314 c->post_bit_error.stat[0].uvalue += p->ber_error_count;
315 c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
316
317 /* Legacy PER/BER */
318 client->legacy_ber = p->ber;
319 };
320
321 static void smsdvb_update_isdbt_stats(struct smsdvb_client_t *client,
322 struct sms_isdbt_stats *p)
323 {
324 struct dvb_frontend *fe = &client->frontend;
325 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
326 struct sms_isdbt_layer_stats *lr;
327 int i, n_layers;
328
329 if (client->prt_isdb_stats)
330 client->prt_isdb_stats(client->debug_data, p);
331
332 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
333
334 /*
335 * Firmware 2.1 seems to report only lock status and
336 * signal strength. The signal strength indicator is at the
337 * wrong field.
338 */
339 if (p->statistics_type == 0) {
340 c->strength.stat[0].uvalue = ((s32)p->transmission_mode) * 1000;
341 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
342 return;
343 }
344
345 /* Update ISDB-T transmission parameters */
346 c->frequency = p->frequency;
347 c->bandwidth_hz = sms_to_bw(p->bandwidth);
348 c->transmission_mode = sms_to_mode(p->transmission_mode);
349 c->guard_interval = sms_to_guard_interval(p->guard_interval);
350 c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
351 n_layers = p->num_of_layers;
352 if (n_layers < 1)
353 n_layers = 1;
354 if (n_layers > 3)
355 n_layers = 3;
356 c->isdbt_layer_enabled = 0;
357
358 /* update reception data */
359 c->lna = p->is_external_lna_on ? 1 : 0;
360
361 /* Carrier to noise ratio, in DB */
362 c->cnr.stat[0].svalue = p->SNR * 1000;
363
364 /* signal Strength, in DBm */
365 c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
366
367 /* PER/BER and per-layer stats require demod lock */
368 if (!p->is_demod_locked)
369 return;
370
371 client->last_per = c->block_error.stat[0].uvalue;
372
373 /* Clears global counters, as the code below will sum it again */
374 c->block_error.stat[0].uvalue = 0;
375 c->block_count.stat[0].uvalue = 0;
376 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
377 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
378 c->post_bit_error.stat[0].uvalue = 0;
379 c->post_bit_count.stat[0].uvalue = 0;
380 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
381 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
382
383 for (i = 0; i < n_layers; i++) {
384 lr = &p->layer_info[i];
385
386 /* Update per-layer transmission parameters */
387 if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
388 c->isdbt_layer_enabled |= 1 << i;
389 c->layer[i].segment_count = lr->number_of_segments;
390 } else {
391 continue;
392 }
393 c->layer[i].modulation = sms_to_modulation(lr->constellation);
394
395 /* TS PER */
396 c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
397 c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
398 c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
399 c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
400
401 /* Update global PER counter */
402 c->block_error.stat[0].uvalue += lr->error_ts_packets;
403 c->block_count.stat[0].uvalue += lr->total_ts_packets;
404
405 /* BER */
406 c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
407 c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
408 c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
409 c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
410
411 /* Update global BER counter */
412 c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
413 c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
414 }
415 }
416
417 static void smsdvb_update_isdbt_stats_ex(struct smsdvb_client_t *client,
418 struct sms_isdbt_stats_ex *p)
419 {
420 struct dvb_frontend *fe = &client->frontend;
421 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
422 struct sms_isdbt_layer_stats *lr;
423 int i, n_layers;
424
425 if (client->prt_isdb_stats_ex)
426 client->prt_isdb_stats_ex(client->debug_data, p);
427
428 /* Update ISDB-T transmission parameters */
429 c->frequency = p->frequency;
430 client->fe_status = sms_to_status(p->is_demod_locked, 0);
431 c->bandwidth_hz = sms_to_bw(p->bandwidth);
432 c->transmission_mode = sms_to_mode(p->transmission_mode);
433 c->guard_interval = sms_to_guard_interval(p->guard_interval);
434 c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
435 n_layers = p->num_of_layers;
436 if (n_layers < 1)
437 n_layers = 1;
438 if (n_layers > 3)
439 n_layers = 3;
440 c->isdbt_layer_enabled = 0;
441
442 /* update reception data */
443 c->lna = p->is_external_lna_on ? 1 : 0;
444
445 /* Carrier to noise ratio, in DB */
446 c->cnr.stat[0].svalue = p->SNR * 1000;
447
448 /* signal Strength, in DBm */
449 c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
450
451 /* PER/BER and per-layer stats require demod lock */
452 if (!p->is_demod_locked)
453 return;
454
455 client->last_per = c->block_error.stat[0].uvalue;
456
457 /* Clears global counters, as the code below will sum it again */
458 c->block_error.stat[0].uvalue = 0;
459 c->block_count.stat[0].uvalue = 0;
460 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
461 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
462 c->post_bit_error.stat[0].uvalue = 0;
463 c->post_bit_count.stat[0].uvalue = 0;
464 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
465 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
466
467 c->post_bit_error.len = n_layers + 1;
468 c->post_bit_count.len = n_layers + 1;
469 c->block_error.len = n_layers + 1;
470 c->block_count.len = n_layers + 1;
471 for (i = 0; i < n_layers; i++) {
472 lr = &p->layer_info[i];
473
474 /* Update per-layer transmission parameters */
475 if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
476 c->isdbt_layer_enabled |= 1 << i;
477 c->layer[i].segment_count = lr->number_of_segments;
478 } else {
479 continue;
480 }
481 c->layer[i].modulation = sms_to_modulation(lr->constellation);
482
483 /* TS PER */
484 c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
485 c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
486 c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
487 c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
488
489 /* Update global PER counter */
490 c->block_error.stat[0].uvalue += lr->error_ts_packets;
491 c->block_count.stat[0].uvalue += lr->total_ts_packets;
492
493 /* ber */
494 c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
495 c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
496 c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
497 c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
498
499 /* Update global ber counter */
500 c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
501 c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
502 }
503 }
504
505 static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
506 {
507 struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
508 struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) (((u8 *) cb->p)
509 + cb->offset);
510 void *p = phdr + 1;
511 struct dvb_frontend *fe = &client->frontend;
512 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
513 bool is_status_update = false;
514
515 switch (phdr->msg_type) {
516 case MSG_SMS_DVBT_BDA_DATA:
517 /*
518 * Only feed data to dvb demux if are there any feed listening
519 * to it and if the device has tuned
520 */
521 if (client->feed_users && client->has_tuned)
522 dvb_dmx_swfilter(&client->demux, p,
523 cb->size - sizeof(struct sms_msg_hdr));
524 break;
525
526 case MSG_SMS_RF_TUNE_RES:
527 case MSG_SMS_ISDBT_TUNE_RES:
528 complete(&client->tune_done);
529 break;
530
531 case MSG_SMS_SIGNAL_DETECTED_IND:
532 client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
533 FE_HAS_VITERBI | FE_HAS_SYNC |
534 FE_HAS_LOCK;
535
536 is_status_update = true;
537 break;
538
539 case MSG_SMS_NO_SIGNAL_IND:
540 client->fe_status = 0;
541
542 is_status_update = true;
543 break;
544
545 case MSG_SMS_TRANSMISSION_IND:
546 smsdvb_update_tx_params(client, p);
547
548 is_status_update = true;
549 break;
550
551 case MSG_SMS_HO_PER_SLICES_IND:
552 smsdvb_update_per_slices(client, p);
553
554 is_status_update = true;
555 break;
556
557 case MSG_SMS_GET_STATISTICS_RES:
558 switch (smscore_get_device_mode(client->coredev)) {
559 case DEVICE_MODE_ISDBT:
560 case DEVICE_MODE_ISDBT_BDA:
561 smsdvb_update_isdbt_stats(client, p);
562 break;
563 default:
564 /* Skip sms_msg_statistics_info:request_result field */
565 smsdvb_update_dvb_stats(client, p + sizeof(u32));
566 }
567
568 is_status_update = true;
569 break;
570
571 /* Only for ISDB-T */
572 case MSG_SMS_GET_STATISTICS_EX_RES:
573 /* Skip sms_msg_statistics_info:request_result field? */
574 smsdvb_update_isdbt_stats_ex(client, p + sizeof(u32));
575 is_status_update = true;
576 break;
577 default:
578 pr_debug("message not handled\n");
579 }
580 smscore_putbuffer(client->coredev, cb);
581
582 if (is_status_update) {
583 if (client->fe_status & FE_HAS_LOCK) {
584 sms_board_dvb3_event(client, DVB3_EVENT_FE_LOCK);
585 if (client->last_per == c->block_error.stat[0].uvalue)
586 sms_board_dvb3_event(client, DVB3_EVENT_UNC_OK);
587 else
588 sms_board_dvb3_event(client, DVB3_EVENT_UNC_ERR);
589 client->has_tuned = true;
590 } else {
591 smsdvb_stats_not_ready(fe);
592 client->has_tuned = false;
593 sms_board_dvb3_event(client, DVB3_EVENT_FE_UNLOCK);
594 }
595 complete(&client->stats_done);
596 }
597
598 return 0;
599 }
600
601 static void smsdvb_media_device_unregister(struct smsdvb_client_t *client)
602 {
603 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
604 struct smscore_device_t *coredev = client->coredev;
605
606 if (!coredev->media_dev)
607 return;
608 media_device_unregister(coredev->media_dev);
609 media_device_cleanup(coredev->media_dev);
610 kfree(coredev->media_dev);
611 coredev->media_dev = NULL;
612 #endif
613 }
614
615 static void smsdvb_unregister_client(struct smsdvb_client_t *client)
616 {
617 /* must be called under clientslock */
618
619 list_del(&client->entry);
620
621 smsdvb_debugfs_release(client);
622 smscore_unregister_client(client->smsclient);
623 dvb_unregister_frontend(&client->frontend);
624 dvb_dmxdev_release(&client->dmxdev);
625 dvb_dmx_release(&client->demux);
626 smsdvb_media_device_unregister(client);
627 dvb_unregister_adapter(&client->adapter);
628 kfree(client);
629 }
630
631 static void smsdvb_onremove(void *context)
632 {
633 kmutex_lock(&g_smsdvb_clientslock);
634
635 smsdvb_unregister_client((struct smsdvb_client_t *) context);
636
637 kmutex_unlock(&g_smsdvb_clientslock);
638 }
639
640 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
641 {
642 struct smsdvb_client_t *client =
643 container_of(feed->demux, struct smsdvb_client_t, demux);
644 struct sms_msg_data pid_msg;
645
646 pr_debug("add pid %d(%x)\n",
647 feed->pid, feed->pid);
648
649 client->feed_users++;
650
651 pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
652 pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
653 pid_msg.x_msg_header.msg_flags = 0;
654 pid_msg.x_msg_header.msg_type = MSG_SMS_ADD_PID_FILTER_REQ;
655 pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
656 pid_msg.msg_data[0] = feed->pid;
657
658 return smsclient_sendrequest(client->smsclient,
659 &pid_msg, sizeof(pid_msg));
660 }
661
662 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
663 {
664 struct smsdvb_client_t *client =
665 container_of(feed->demux, struct smsdvb_client_t, demux);
666 struct sms_msg_data pid_msg;
667
668 pr_debug("remove pid %d(%x)\n",
669 feed->pid, feed->pid);
670
671 client->feed_users--;
672
673 pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
674 pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
675 pid_msg.x_msg_header.msg_flags = 0;
676 pid_msg.x_msg_header.msg_type = MSG_SMS_REMOVE_PID_FILTER_REQ;
677 pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
678 pid_msg.msg_data[0] = feed->pid;
679
680 return smsclient_sendrequest(client->smsclient,
681 &pid_msg, sizeof(pid_msg));
682 }
683
684 static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
685 void *buffer, size_t size,
686 struct completion *completion)
687 {
688 int rc;
689
690 rc = smsclient_sendrequest(client->smsclient, buffer, size);
691 if (rc < 0)
692 return rc;
693
694 return wait_for_completion_timeout(completion,
695 msecs_to_jiffies(2000)) ?
696 0 : -ETIME;
697 }
698
699 static int smsdvb_send_statistics_request(struct smsdvb_client_t *client)
700 {
701 int rc;
702 struct sms_msg_hdr msg;
703
704 /* Don't request stats too fast */
705 if (client->get_stats_jiffies &&
706 (!time_after(jiffies, client->get_stats_jiffies)))
707 return 0;
708 client->get_stats_jiffies = jiffies + msecs_to_jiffies(100);
709
710 msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
711 msg.msg_dst_id = HIF_TASK;
712 msg.msg_flags = 0;
713 msg.msg_length = sizeof(msg);
714
715 switch (smscore_get_device_mode(client->coredev)) {
716 case DEVICE_MODE_ISDBT:
717 case DEVICE_MODE_ISDBT_BDA:
718 /*
719 * Check for firmware version, to avoid breaking for old cards
720 */
721 if (client->coredev->fw_version >= 0x800)
722 msg.msg_type = MSG_SMS_GET_STATISTICS_EX_REQ;
723 else
724 msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
725 break;
726 default:
727 msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
728 }
729
730 rc = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
731 &client->stats_done);
732
733 return rc;
734 }
735
736 static inline int led_feedback(struct smsdvb_client_t *client)
737 {
738 if (!(client->fe_status & FE_HAS_LOCK))
739 return sms_board_led_feedback(client->coredev, SMS_LED_OFF);
740
741 return sms_board_led_feedback(client->coredev,
742 (client->legacy_ber == 0) ?
743 SMS_LED_HI : SMS_LED_LO);
744 }
745
746 static int smsdvb_read_status(struct dvb_frontend *fe, enum fe_status *stat)
747 {
748 int rc;
749 struct smsdvb_client_t *client;
750 client = container_of(fe, struct smsdvb_client_t, frontend);
751
752 rc = smsdvb_send_statistics_request(client);
753
754 *stat = client->fe_status;
755
756 led_feedback(client);
757
758 return rc;
759 }
760
761 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
762 {
763 int rc;
764 struct smsdvb_client_t *client;
765
766 client = container_of(fe, struct smsdvb_client_t, frontend);
767
768 rc = smsdvb_send_statistics_request(client);
769
770 *ber = client->legacy_ber;
771
772 led_feedback(client);
773
774 return rc;
775 }
776
777 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
778 {
779 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
780 int rc;
781 s32 power = (s32) c->strength.stat[0].uvalue;
782 struct smsdvb_client_t *client;
783
784 client = container_of(fe, struct smsdvb_client_t, frontend);
785
786 rc = smsdvb_send_statistics_request(client);
787
788 if (power < -95)
789 *strength = 0;
790 else if (power > -29)
791 *strength = 65535;
792 else
793 *strength = (power + 95) * 65535 / 66;
794
795 led_feedback(client);
796
797 return rc;
798 }
799
800 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
801 {
802 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
803 int rc;
804 struct smsdvb_client_t *client;
805
806 client = container_of(fe, struct smsdvb_client_t, frontend);
807
808 rc = smsdvb_send_statistics_request(client);
809
810 /* Preferred scale for SNR with legacy API: 0.1 dB */
811 *snr = ((u32)c->cnr.stat[0].svalue) / 100;
812
813 led_feedback(client);
814
815 return rc;
816 }
817
818 static int smsdvb_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
819 {
820 int rc;
821 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
822 struct smsdvb_client_t *client;
823
824 client = container_of(fe, struct smsdvb_client_t, frontend);
825
826 rc = smsdvb_send_statistics_request(client);
827
828 *ucblocks = c->block_error.stat[0].uvalue;
829
830 led_feedback(client);
831
832 return rc;
833 }
834
835 static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
836 struct dvb_frontend_tune_settings *tune)
837 {
838 pr_debug("\n");
839
840 tune->min_delay_ms = 400;
841 tune->step_size = 250000;
842 tune->max_drift = 0;
843 return 0;
844 }
845
846 static int smsdvb_dvbt_set_frontend(struct dvb_frontend *fe)
847 {
848 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
849 struct smsdvb_client_t *client =
850 container_of(fe, struct smsdvb_client_t, frontend);
851
852 struct {
853 struct sms_msg_hdr msg;
854 u32 Data[3];
855 } msg;
856
857 int ret;
858
859 client->fe_status = 0;
860 client->event_fe_state = -1;
861 client->event_unc_state = -1;
862 fe->dtv_property_cache.delivery_system = SYS_DVBT;
863
864 msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
865 msg.msg.msg_dst_id = HIF_TASK;
866 msg.msg.msg_flags = 0;
867 msg.msg.msg_type = MSG_SMS_RF_TUNE_REQ;
868 msg.msg.msg_length = sizeof(msg);
869 msg.Data[0] = c->frequency;
870 msg.Data[2] = 12000000;
871
872 pr_debug("%s: freq %d band %d\n", __func__, c->frequency,
873 c->bandwidth_hz);
874
875 switch (c->bandwidth_hz / 1000000) {
876 case 8:
877 msg.Data[1] = BW_8_MHZ;
878 break;
879 case 7:
880 msg.Data[1] = BW_7_MHZ;
881 break;
882 case 6:
883 msg.Data[1] = BW_6_MHZ;
884 break;
885 case 0:
886 return -EOPNOTSUPP;
887 default:
888 return -EINVAL;
889 }
890 /* Disable LNA, if any. An error is returned if no LNA is present */
891 ret = sms_board_lna_control(client->coredev, 0);
892 if (ret == 0) {
893 enum fe_status status;
894
895 /* tune with LNA off at first */
896 ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
897 &client->tune_done);
898
899 smsdvb_read_status(fe, &status);
900
901 if (status & FE_HAS_LOCK)
902 return ret;
903
904 /* previous tune didn't lock - enable LNA and tune again */
905 sms_board_lna_control(client->coredev, 1);
906 }
907
908 return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
909 &client->tune_done);
910 }
911
912 static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
913 {
914 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
915 struct smsdvb_client_t *client =
916 container_of(fe, struct smsdvb_client_t, frontend);
917 int board_id = smscore_get_board_id(client->coredev);
918 struct sms_board *board = sms_get_board(board_id);
919 enum sms_device_type_st type = board->type;
920 int ret;
921
922 struct {
923 struct sms_msg_hdr msg;
924 u32 Data[4];
925 } msg;
926
927 fe->dtv_property_cache.delivery_system = SYS_ISDBT;
928
929 msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
930 msg.msg.msg_dst_id = HIF_TASK;
931 msg.msg.msg_flags = 0;
932 msg.msg.msg_type = MSG_SMS_ISDBT_TUNE_REQ;
933 msg.msg.msg_length = sizeof(msg);
934
935 if (c->isdbt_sb_segment_idx == -1)
936 c->isdbt_sb_segment_idx = 0;
937
938 if (!c->isdbt_layer_enabled)
939 c->isdbt_layer_enabled = 7;
940
941 msg.Data[0] = c->frequency;
942 msg.Data[1] = BW_ISDBT_1SEG;
943 msg.Data[2] = 12000000;
944 msg.Data[3] = c->isdbt_sb_segment_idx;
945
946 if (c->isdbt_partial_reception) {
947 if ((type == SMS_PELE || type == SMS_RIO) &&
948 c->isdbt_sb_segment_count > 3)
949 msg.Data[1] = BW_ISDBT_13SEG;
950 else if (c->isdbt_sb_segment_count > 1)
951 msg.Data[1] = BW_ISDBT_3SEG;
952 } else if (type == SMS_PELE || type == SMS_RIO)
953 msg.Data[1] = BW_ISDBT_13SEG;
954
955 c->bandwidth_hz = 6000000;
956
957 pr_debug("freq %d segwidth %d segindex %d\n",
958 c->frequency, c->isdbt_sb_segment_count,
959 c->isdbt_sb_segment_idx);
960
961 /* Disable LNA, if any. An error is returned if no LNA is present */
962 ret = sms_board_lna_control(client->coredev, 0);
963 if (ret == 0) {
964 enum fe_status status;
965
966 /* tune with LNA off at first */
967 ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
968 &client->tune_done);
969
970 smsdvb_read_status(fe, &status);
971
972 if (status & FE_HAS_LOCK)
973 return ret;
974
975 /* previous tune didn't lock - enable LNA and tune again */
976 sms_board_lna_control(client->coredev, 1);
977 }
978 return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
979 &client->tune_done);
980 }
981
982 static int smsdvb_set_frontend(struct dvb_frontend *fe)
983 {
984 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
985 struct smsdvb_client_t *client =
986 container_of(fe, struct smsdvb_client_t, frontend);
987 struct smscore_device_t *coredev = client->coredev;
988
989 smsdvb_stats_not_ready(fe);
990 c->strength.stat[0].uvalue = 0;
991 c->cnr.stat[0].uvalue = 0;
992
993 client->has_tuned = false;
994
995 switch (smscore_get_device_mode(coredev)) {
996 case DEVICE_MODE_DVBT:
997 case DEVICE_MODE_DVBT_BDA:
998 return smsdvb_dvbt_set_frontend(fe);
999 case DEVICE_MODE_ISDBT:
1000 case DEVICE_MODE_ISDBT_BDA:
1001 return smsdvb_isdbt_set_frontend(fe);
1002 default:
1003 return -EINVAL;
1004 }
1005 }
1006
1007 static int smsdvb_init(struct dvb_frontend *fe)
1008 {
1009 struct smsdvb_client_t *client =
1010 container_of(fe, struct smsdvb_client_t, frontend);
1011
1012 sms_board_power(client->coredev, 1);
1013
1014 sms_board_dvb3_event(client, DVB3_EVENT_INIT);
1015 return 0;
1016 }
1017
1018 static int smsdvb_sleep(struct dvb_frontend *fe)
1019 {
1020 struct smsdvb_client_t *client =
1021 container_of(fe, struct smsdvb_client_t, frontend);
1022
1023 sms_board_led_feedback(client->coredev, SMS_LED_OFF);
1024 sms_board_power(client->coredev, 0);
1025
1026 sms_board_dvb3_event(client, DVB3_EVENT_SLEEP);
1027
1028 return 0;
1029 }
1030
1031 static void smsdvb_release(struct dvb_frontend *fe)
1032 {
1033 /* do nothing */
1034 }
1035
1036 static const struct dvb_frontend_ops smsdvb_fe_ops = {
1037 .info = {
1038 .name = "Siano Mobile Digital MDTV Receiver",
1039 .frequency_min_hz = 44250 * kHz,
1040 .frequency_max_hz = 867250 * kHz,
1041 .frequency_stepsize_hz = 250 * kHz,
1042 .caps = FE_CAN_INVERSION_AUTO |
1043 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1044 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1045 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
1046 FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
1047 FE_CAN_GUARD_INTERVAL_AUTO |
1048 FE_CAN_RECOVER |
1049 FE_CAN_HIERARCHY_AUTO,
1050 },
1051
1052 .release = smsdvb_release,
1053
1054 .set_frontend = smsdvb_set_frontend,
1055 .get_tune_settings = smsdvb_get_tune_settings,
1056
1057 .read_status = smsdvb_read_status,
1058 .read_ber = smsdvb_read_ber,
1059 .read_signal_strength = smsdvb_read_signal_strength,
1060 .read_snr = smsdvb_read_snr,
1061 .read_ucblocks = smsdvb_read_ucblocks,
1062
1063 .init = smsdvb_init,
1064 .sleep = smsdvb_sleep,
1065 };
1066
1067 static int smsdvb_hotplug(struct smscore_device_t *coredev,
1068 struct device *device, int arrival)
1069 {
1070 struct smsclient_params_t params;
1071 struct smsdvb_client_t *client;
1072 int rc;
1073
1074 /* device removal handled by onremove callback */
1075 if (!arrival)
1076 return 0;
1077 client = kzalloc(sizeof(struct smsdvb_client_t), GFP_KERNEL);
1078 if (!client)
1079 return -ENOMEM;
1080
1081 /* register dvb adapter */
1082 rc = dvb_register_adapter(&client->adapter,
1083 sms_get_board(
1084 smscore_get_board_id(coredev))->name,
1085 THIS_MODULE, device, adapter_nr);
1086 if (rc < 0) {
1087 pr_err("dvb_register_adapter() failed %d\n", rc);
1088 goto adapter_error;
1089 }
1090 dvb_register_media_controller(&client->adapter, coredev->media_dev);
1091
1092 /* init dvb demux */
1093 client->demux.dmx.capabilities = DMX_TS_FILTERING;
1094 client->demux.filternum = 32; /* todo: nova ??? */
1095 client->demux.feednum = 32;
1096 client->demux.start_feed = smsdvb_start_feed;
1097 client->demux.stop_feed = smsdvb_stop_feed;
1098
1099 rc = dvb_dmx_init(&client->demux);
1100 if (rc < 0) {
1101 pr_err("dvb_dmx_init failed %d\n", rc);
1102 goto dvbdmx_error;
1103 }
1104
1105 /* init dmxdev */
1106 client->dmxdev.filternum = 32;
1107 client->dmxdev.demux = &client->demux.dmx;
1108 client->dmxdev.capabilities = 0;
1109
1110 rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
1111 if (rc < 0) {
1112 pr_err("dvb_dmxdev_init failed %d\n", rc);
1113 goto dmxdev_error;
1114 }
1115
1116 /* init and register frontend */
1117 memcpy(&client->frontend.ops, &smsdvb_fe_ops,
1118 sizeof(struct dvb_frontend_ops));
1119
1120 switch (smscore_get_device_mode(coredev)) {
1121 case DEVICE_MODE_DVBT:
1122 case DEVICE_MODE_DVBT_BDA:
1123 client->frontend.ops.delsys[0] = SYS_DVBT;
1124 break;
1125 case DEVICE_MODE_ISDBT:
1126 case DEVICE_MODE_ISDBT_BDA:
1127 client->frontend.ops.delsys[0] = SYS_ISDBT;
1128 break;
1129 }
1130
1131 rc = dvb_register_frontend(&client->adapter, &client->frontend);
1132 if (rc < 0) {
1133 pr_err("frontend registration failed %d\n", rc);
1134 goto frontend_error;
1135 }
1136
1137 params.initial_id = 1;
1138 params.data_type = MSG_SMS_DVBT_BDA_DATA;
1139 params.onresponse_handler = smsdvb_onresponse;
1140 params.onremove_handler = smsdvb_onremove;
1141 params.context = client;
1142
1143 rc = smscore_register_client(coredev, &params, &client->smsclient);
1144 if (rc < 0) {
1145 pr_err("smscore_register_client() failed %d\n", rc);
1146 goto client_error;
1147 }
1148
1149 client->coredev = coredev;
1150
1151 init_completion(&client->tune_done);
1152 init_completion(&client->stats_done);
1153
1154 kmutex_lock(&g_smsdvb_clientslock);
1155
1156 list_add(&client->entry, &g_smsdvb_clients);
1157
1158 kmutex_unlock(&g_smsdvb_clientslock);
1159
1160 client->event_fe_state = -1;
1161 client->event_unc_state = -1;
1162 sms_board_dvb3_event(client, DVB3_EVENT_HOTPLUG);
1163
1164 sms_board_setup(coredev);
1165
1166 if (smsdvb_debugfs_create(client) < 0)
1167 pr_info("failed to create debugfs node\n");
1168
1169 rc = dvb_create_media_graph(&client->adapter, true);
1170 if (rc < 0) {
1171 pr_err("dvb_create_media_graph failed %d\n", rc);
1172 goto media_graph_error;
1173 }
1174
1175 pr_info("DVB interface registered.\n");
1176 return 0;
1177
1178 media_graph_error:
1179 smsdvb_debugfs_release(client);
1180
1181 client_error:
1182 dvb_unregister_frontend(&client->frontend);
1183
1184 frontend_error:
1185 dvb_dmxdev_release(&client->dmxdev);
1186
1187 dmxdev_error:
1188 dvb_dmx_release(&client->demux);
1189
1190 dvbdmx_error:
1191 smsdvb_media_device_unregister(client);
1192 dvb_unregister_adapter(&client->adapter);
1193
1194 adapter_error:
1195 kfree(client);
1196 return rc;
1197 }
1198
1199 static int __init smsdvb_module_init(void)
1200 {
1201 int rc;
1202
1203 INIT_LIST_HEAD(&g_smsdvb_clients);
1204 kmutex_init(&g_smsdvb_clientslock);
1205
1206 smsdvb_debugfs_register();
1207
1208 rc = smscore_register_hotplug(smsdvb_hotplug);
1209
1210 pr_debug("\n");
1211
1212 return rc;
1213 }
1214
1215 static void __exit smsdvb_module_exit(void)
1216 {
1217 smscore_unregister_hotplug(smsdvb_hotplug);
1218
1219 kmutex_lock(&g_smsdvb_clientslock);
1220
1221 while (!list_empty(&g_smsdvb_clients))
1222 smsdvb_unregister_client((struct smsdvb_client_t *)g_smsdvb_clients.next);
1223
1224 smsdvb_debugfs_unregister();
1225
1226 kmutex_unlock(&g_smsdvb_clientslock);
1227 }
1228
1229 module_init(smsdvb_module_init);
1230 module_exit(smsdvb_module_exit);
1231
1232 MODULE_DESCRIPTION("SMS DVB subsystem adaptation module");
1233 MODULE_AUTHOR("Siano Mobile Silicon, Inc. (uris@siano-ms.com)");
1234 MODULE_LICENSE("GPL");
Linux with added FPC-III support