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[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb-core / dvb_frontend.c
CommitLineData
1da177e4
LT		 1/*
2 * dvb_frontend.c: DVB frontend tuning interface/thread
3 *
4 *
5 * Copyright (C) 1999-2001 Ralph Metzler
6 * Marcus Metzler
7 * Holger Waechtler
8 * for convergence integrated media GmbH
9 *
10 * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
26 */
27
8de8594a
MCC		 28/* Enables DVBv3 compatibility bits at the headers */
29#define __DVB_CORE__
30
1da177e4
LT		 31#include <linux/string.h>
32#include <linux/kernel.h>
33#include <linux/sched.h>
34#include <linux/wait.h>
35#include <linux/slab.h>
36#include <linux/poll.h>
4c4cb1b1 37#include <linux/semaphore.h>
1da177e4 38#include <linux/module.h>
1da177e4 39#include <linux/list.h>
7dfb7103 40#include <linux/freezer.h>
cc89c229 41#include <linux/jiffies.h>
8eec1429 42#include <linux/kthread.h>
1da177e4 43#include <asm/processor.h>
1da177e4
LT		 44
45#include "dvb_frontend.h"
46#include "dvbdev.h"
eacf8d8d 47#include <linux/dvb/version.h>
1da177e4
LT		 48
49static int dvb_frontend_debug;
849be2cd 50static int dvb_shutdown_timeout;
1da177e4
LT		 51static int dvb_force_auto_inversion;
52static int dvb_override_tune_delay;
53static int dvb_powerdown_on_sleep = 1;
59b1842d 54static int dvb_mfe_wait_time = 5;
1da177e4
LT		 55
56module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 57MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 58module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 59MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 60module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 61MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 62module_param(dvb_override_tune_delay, int, 0644);
1da177e4 63MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 64module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 65MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 66module_param(dvb_mfe_wait_time, int, 0644);
67MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
1da177e4 68
1da177e4
LT		 69#define FESTATE_IDLE 1
70#define FESTATE_RETUNE 2
71#define FESTATE_TUNING_FAST 4
72#define FESTATE_TUNING_SLOW 8
73#define FESTATE_TUNED 16
74#define FESTATE_ZIGZAG_FAST 32
75#define FESTATE_ZIGZAG_SLOW 64
76#define FESTATE_DISEQC 128
01886255 77#define FESTATE_ERROR 256
1da177e4
LT		 78#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
79#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
80#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
81#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16
MA		 82
83#define FE_ALGO_HW 1
1da177e4
LT		 84/*
85 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
86 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
87 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
88 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
89 * FESTATE_TUNED. The frontend has successfully locked on.
90 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
91 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
92 * FESTATE_DISEQC. A DISEQC command has just been issued.
93 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
94 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
95 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
96 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
97 */
98
3593cab5 99static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 100
101struct dvb_frontend_private {
102
36cb557a 103 /* thread/frontend values */
1da177e4 104 struct dvb_device *dvbdev;
a5959dbe 105 struct dvb_frontend_parameters parameters_out;
1da177e4
LT		 106 struct dvb_fe_events events;
107 struct semaphore sem;
108 struct list_head list_head;
109 wait_queue_head_t wait_queue;
8eec1429 110 struct task_struct *thread;
1da177e4 111 unsigned long release_jiffies;
36cb557a 112 unsigned int wakeup;
0df289a2 113 enum fe_status status;
400b7083 114 unsigned long tune_mode_flags;
36cb557a 115 unsigned int delay;
86f40cc3 116 unsigned int reinitialise;
64454016
AQ		 117 int tone;
118 int voltage;
36cb557a
AQ		 119
120 /* swzigzag values */
121 unsigned int state;
122 unsigned int bending;
123 int lnb_drift;
124 unsigned int inversion;
125 unsigned int auto_step;
126 unsigned int auto_sub_step;
127 unsigned int started_auto_step;
128 unsigned int min_delay;
129 unsigned int max_drift;
130 unsigned int step_size;
131 int quality;
132 unsigned int check_wrapped;
c59e7870 133 enum dvbfe_search algo_status;
135f9be9
MCC		 134
135#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
136 struct media_pipeline pipe;
137 struct media_entity *pipe_start_entity;
138#endif
1da177e4
LT		 139};
140
86f40cc3 141static void dvb_frontend_wakeup(struct dvb_frontend *fe);
a689e365 142static int dtv_get_frontend(struct dvb_frontend *fe,
a689e365 143 struct dvb_frontend_parameters *p_out);
556a0442
CR		 144static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
145 struct dvb_frontend_parameters *p);
a689e365
MCC		 146
147static bool has_get_frontend(struct dvb_frontend *fe)
148{
c065f5b4 149 return fe->ops.get_frontend != NULL;
a689e365 150}
1da177e4 151
5bfaadde
MCC		 152/*
153 * Due to DVBv3 API calls, a delivery system should be mapped into one of
154 * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
155 * otherwise, a DVBv3 call will fail.
156 */
157enum dvbv3_emulation_type {
158 DVBV3_UNKNOWN,
159 DVBV3_QPSK,
160 DVBV3_QAM,
161 DVBV3_OFDM,
162 DVBV3_ATSC,
163};
164
165static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system)
166{
167 switch (delivery_system) {
168 case SYS_DVBC_ANNEX_A:
169 case SYS_DVBC_ANNEX_C:
170 return DVBV3_QAM;
171 case SYS_DVBS:
172 case SYS_DVBS2:
173 case SYS_TURBO:
174 case SYS_ISDBS:
175 case SYS_DSS:
176 return DVBV3_QPSK;
177 case SYS_DVBT:
178 case SYS_DVBT2:
179 case SYS_ISDBT:
224b6642 180 case SYS_DTMB:
5bfaadde
MCC		 181 return DVBV3_OFDM;
182 case SYS_ATSC:
ca689488 183 case SYS_ATSCMH:
5bfaadde
MCC		 184 case SYS_DVBC_ANNEX_B:
185 return DVBV3_ATSC;
186 case SYS_UNDEFINED:
187 case SYS_ISDBC:
188 case SYS_DVBH:
189 case SYS_DAB:
5bfaadde
MCC		 190 default:
191 /*
192 * Doesn't know how to emulate those types and/or
193 * there's no frontend driver from this type yet
194 * with some emulation code, so, we're not sure yet how
195 * to handle them, or they're not compatible with a DVBv3 call.
196 */
197 return DVBV3_UNKNOWN;
198 }
199}
200
0df289a2
MCC		 201static void dvb_frontend_add_event(struct dvb_frontend *fe,
202 enum fe_status status)
1da177e4 203{
0c53c70f 204 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 205 struct dvb_fe_events *events = &fepriv->events;
206 struct dvb_frontend_event *e;
207 int wp;
208
36bdbc3f 209 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 210
a689e365 211 if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
7c61d80a 212 dtv_get_frontend(fe, &fepriv->parameters_out);
1da177e4 213
77b1e2fb 214 mutex_lock(&events->mtx);
1da177e4 215
77b1e2fb 216 wp = (events->eventw + 1) % MAX_EVENT;
1da177e4
LT		 217 if (wp == events->eventr) {
218 events->overflow = 1;
219 events->eventr = (events->eventr + 1) % MAX_EVENT;
220 }
221
222 e = &events->events[events->eventw];
77b1e2fb 223 e->status = status;
a5959dbe 224 e->parameters = fepriv->parameters_out;
1da177e4
LT		 225
226 events->eventw = wp;
227
03b76123 228 mutex_unlock(&events->mtx);
1da177e4 229
1da177e4
LT		 230 wake_up_interruptible (&events->wait_queue);
231}
232
233static int dvb_frontend_get_event(struct dvb_frontend *fe,
234 struct dvb_frontend_event *event, int flags)
235{
0c53c70f 236 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 237 struct dvb_fe_events *events = &fepriv->events;
238
36bdbc3f 239 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 240
241 if (events->overflow) {
242 events->overflow = 0;
243 return -EOVERFLOW;
244 }
245
246 if (events->eventw == events->eventr) {
247 int ret;
248
249 if (flags & O_NONBLOCK)
250 return -EWOULDBLOCK;
251
252 up(&fepriv->sem);
253
254 ret = wait_event_interruptible (events->wait_queue,
255 events->eventw != events->eventr);
256
257 if (down_interruptible (&fepriv->sem))
258 return -ERESTARTSYS;
259
260 if (ret < 0)
261 return ret;
262 }
263
77b1e2fb
AO		 264 mutex_lock(&events->mtx);
265 *event = events->events[events->eventr];
1da177e4 266 events->eventr = (events->eventr + 1) % MAX_EVENT;
03b76123 267 mutex_unlock(&events->mtx);
1da177e4
LT		 268
269 return 0;
270}
271
20640bea
AO		 272static void dvb_frontend_clear_events(struct dvb_frontend *fe)
273{
274 struct dvb_frontend_private *fepriv = fe->frontend_priv;
275 struct dvb_fe_events *events = &fepriv->events;
276
277 mutex_lock(&events->mtx);
278 events->eventr = events->eventw;
279 mutex_unlock(&events->mtx);
280}
281
1da177e4
LT		 282static void dvb_frontend_init(struct dvb_frontend *fe)
283{
36bdbc3f
AP		 284 dev_dbg(fe->dvb->device,
285 "%s: initialising adapter %i frontend %i (%s)...\n",
286 __func__, fe->dvb->num, fe->id, fe->ops.info.name);
dea74869
PB		 287
288 if (fe->ops.init)
289 fe->ops.init(fe);
290 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 291 if (fe->ops.i2c_gate_ctrl)
292 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 293 fe->ops.tuner_ops.init(fe);
294 if (fe->ops.i2c_gate_ctrl)
295 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 296 }
1da177e4
LT		 297}
298
86f40cc3
AQ		 299void dvb_frontend_reinitialise(struct dvb_frontend *fe)
300{
301 struct dvb_frontend_private *fepriv = fe->frontend_priv;
302
303 fepriv->reinitialise = 1;
304 dvb_frontend_wakeup(fe);
305}
306EXPORT_SYMBOL(dvb_frontend_reinitialise);
307
36cb557a 308static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 309{
36cb557a 310 int q2;
36bdbc3f 311 struct dvb_frontend *fe = fepriv->dvbdev->priv;
1da177e4 312
36bdbc3f 313 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 314
36cb557a
AQ		 315 if (locked)
316 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
317 else
318 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 319
36cb557a
AQ		 320 q2 = fepriv->quality - 128;
321 q2 *= q2;
1da177e4 322
36cb557a 323 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 324}
325
326/**
327 * Performs automatic twiddling of frontend parameters.
328 *
329 * @param fe The frontend concerned.
330 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
331 * @returns Number of complete iterations that have been performed.
332 */
36cb557a 333static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 334{
335 int autoinversion;
336 int ready = 0;
01886255 337 int fe_set_err = 0;
0c53c70f 338 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4
MCC		 339 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
340 int original_inversion = c->inversion;
341 u32 original_frequency = c->frequency;
1da177e4
LT		 342
343 /* are we using autoinversion? */
dea74869 344 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4 345 (c->inversion == INVERSION_AUTO));
1da177e4
LT		 346
347 /* setup parameters correctly */
348 while(!ready) {
349 /* calculate the lnb_drift */
350 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
351
352 /* wrap the auto_step if we've exceeded the maximum drift */
353 if (fepriv->lnb_drift > fepriv->max_drift) {
354 fepriv->auto_step = 0;
355 fepriv->auto_sub_step = 0;
356 fepriv->lnb_drift = 0;
357 }
358
359 /* perform inversion and +/- zigzag */
360 switch(fepriv->auto_sub_step) {
361 case 0:
362 /* try with the current inversion and current drift setting */
363 ready = 1;
364 break;
365
366 case 1:
367 if (!autoinversion) break;
368
369 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
370 ready = 1;
371 break;
372
373 case 2:
374 if (fepriv->lnb_drift == 0) break;
375
376 fepriv->lnb_drift = -fepriv->lnb_drift;
377 ready = 1;
378 break;
379
380 case 3:
381 if (fepriv->lnb_drift == 0) break;
382 if (!autoinversion) break;
383
384 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
385 fepriv->lnb_drift = -fepriv->lnb_drift;
386 ready = 1;
387 break;
388
389 default:
390 fepriv->auto_step++;
391 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
392 break;
393 }
394
395 if (!ready) fepriv->auto_sub_step++;
396 }
397
398 /* if this attempt would hit where we started, indicate a complete
399 * iteration has occurred */
400 if ((fepriv->auto_step == fepriv->started_auto_step) &&
401 (fepriv->auto_sub_step == 0) && check_wrapped) {
402 return 1;
403 }
404
36bdbc3f
AP		 405 dev_dbg(fe->dvb->device, "%s: drift:%i inversion:%i auto_step:%i " \
406 "auto_sub_step:%i started_auto_step:%i\n",
407 __func__, fepriv->lnb_drift, fepriv->inversion,
408 fepriv->auto_step, fepriv->auto_sub_step,
409 fepriv->started_auto_step);
1da177e4
LT		 410
411 /* set the frontend itself */
ac3852c4 412 c->frequency += fepriv->lnb_drift;
1da177e4 413 if (autoinversion)
ac3852c4
MCC		 414 c->inversion = fepriv->inversion;
415 tmp = *c;
dea74869 416 if (fe->ops.set_frontend)
bc9cd273 417 fe_set_err = fe->ops.set_frontend(fe);
ac3852c4 418 *c = tmp;
01886255
JG		 419 if (fe_set_err < 0) {
420 fepriv->state = FESTATE_ERROR;
421 return fe_set_err;
422 }
1da177e4 423
ac3852c4
MCC		 424 c->frequency = original_frequency;
425 c->inversion = original_inversion;
1da177e4
LT		 426
427 fepriv->auto_sub_step++;
428 return 0;
429}
430
36cb557a
AQ		 431static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
432{
0df289a2 433 enum fe_status s = 0;
01886255 434 int retval = 0;
36cb557a 435 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4 436 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
36cb557a
AQ		 437
438 /* if we've got no parameters, just keep idling */
439 if (fepriv->state & FESTATE_IDLE) {
440 fepriv->delay = 3*HZ;
441 fepriv->quality = 0;
442 return;
443 }
444
445 /* in SCAN mode, we just set the frontend when asked and leave it alone */
446 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
447 if (fepriv->state & FESTATE_RETUNE) {
ac3852c4 448 tmp = *c;
dea74869 449 if (fe->ops.set_frontend)
bc9cd273 450 retval = fe->ops.set_frontend(fe);
ac3852c4 451 *c = tmp;
01886255
JG		 452 if (retval < 0)
453 fepriv->state = FESTATE_ERROR;
454 else
455 fepriv->state = FESTATE_TUNED;
36cb557a
AQ		 456 }
457 fepriv->delay = 3*HZ;
458 fepriv->quality = 0;
459 return;
460 }
461
462 /* get the frontend status */
463 if (fepriv->state & FESTATE_RETUNE) {
464 s = 0;
465 } else {
dea74869
PB		 466 if (fe->ops.read_status)
467 fe->ops.read_status(fe, &s);
36cb557a
AQ		 468 if (s != fepriv->status) {
469 dvb_frontend_add_event(fe, s);
470 fepriv->status = s;
471 }
472 }
473
474 /* if we're not tuned, and we have a lock, move to the TUNED state */
475 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
476 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
477 fepriv->state = FESTATE_TUNED;
478
479 /* if we're tuned, then we have determined the correct inversion */
dea74869 480 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4
MCC		 481 (c->inversion == INVERSION_AUTO)) {
482 c->inversion = fepriv->inversion;
36cb557a
AQ		 483 }
484 return;
485 }
486
487 /* if we are tuned already, check we're still locked */
488 if (fepriv->state & FESTATE_TUNED) {
489 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
490
491 /* we're tuned, and the lock is still good... */
492 if (s & FE_HAS_LOCK) {
493 return;
494 } else { /* if we _WERE_ tuned, but now don't have a lock */
495 fepriv->state = FESTATE_ZIGZAG_FAST;
496 fepriv->started_auto_step = fepriv->auto_step;
497 fepriv->check_wrapped = 0;
498 }
499 }
500
501 /* don't actually do anything if we're in the LOSTLOCK state,
502 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
503 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 504 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 505 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
506 return;
507 }
508
509 /* don't do anything if we're in the DISEQC state, since this
510 * might be someone with a motorized dish controlled by DISEQC.
511 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
512 if (fepriv->state & FESTATE_DISEQC) {
513 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
514 return;
515 }
516
517 /* if we're in the RETUNE state, set everything up for a brand
518 * new scan, keeping the current inversion setting, as the next
519 * tune is _very_ likely to require the same */
520 if (fepriv->state & FESTATE_RETUNE) {
521 fepriv->lnb_drift = 0;
522 fepriv->auto_step = 0;
523 fepriv->auto_sub_step = 0;
524 fepriv->started_auto_step = 0;
525 fepriv->check_wrapped = 0;
526 }
527
528 /* fast zigzag. */
529 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
530 fepriv->delay = fepriv->min_delay;
531
2030c032 532 /* perform a tune */
01886255
JG		 533 retval = dvb_frontend_swzigzag_autotune(fe,
534 fepriv->check_wrapped);
535 if (retval < 0) {
536 return;
537 } else if (retval) {
36cb557a
AQ		 538 /* OK, if we've run out of trials at the fast speed.
539 * Drop back to slow for the _next_ attempt */
540 fepriv->state = FESTATE_SEARCHING_SLOW;
541 fepriv->started_auto_step = fepriv->auto_step;
542 return;
543 }
544 fepriv->check_wrapped = 1;
545
546 /* if we've just retuned, enter the ZIGZAG_FAST state.
547 * This ensures we cannot return from an
548 * FE_SET_FRONTEND ioctl before the first frontend tune
549 * occurs */
550 if (fepriv->state & FESTATE_RETUNE) {
551 fepriv->state = FESTATE_TUNING_FAST;
552 }
553 }
554
555 /* slow zigzag */
556 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
557 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
558
559 /* Note: don't bother checking for wrapping; we stay in this
560 * state until we get a lock */
561 dvb_frontend_swzigzag_autotune(fe, 0);
562 }
563}
564
1da177e4
LT		 565static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
566{
0c53c70f 567 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 568
18ed2860 569 if (fe->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 570 return 1;
571
572 if (fepriv->dvbdev->writers == 1)
b9d5efcc 573 if (time_after_eq(jiffies, fepriv->release_jiffies +
36cb557a 574 dvb_shutdown_timeout * HZ))
1da177e4
LT		 575 return 1;
576
577 return 0;
578}
579
580static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
581{
0c53c70f 582 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 583
584 if (fepriv->wakeup) {
585 fepriv->wakeup = 0;
586 return 1;
587 }
588 return dvb_frontend_is_exiting(fe);
589}
590
591static void dvb_frontend_wakeup(struct dvb_frontend *fe)
592{
0c53c70f 593 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 594
595 fepriv->wakeup = 1;
596 wake_up_interruptible(&fepriv->wait_queue);
597}
598
9239effd
MCC		 599/**
600 * dvb_enable_media_tuner() - tries to enable the DVB tuner
601 *
602 * @fe: struct dvb_frontend pointer
603 *
604 * This function ensures that just one media tuner is enabled for a given
605 * frontend. It has two different behaviors:
606 * - For trivial devices with just one tuner:
607 * it just enables the existing tuner->fe link
608 * - For devices with more than one tuner:
609 * It is up to the driver to implement the logic that will enable one tuner
610 * and disable the other ones. However, if more than one tuner is enabled for
611 * the same frontend, it will print an error message and return -EINVAL.
612 *
613 * At return, it will return the error code returned by media_entity_setup_link,
614 * or 0 if everything is OK, if no tuner is linked to the frontend or if the
615 * mdev is NULL.
616 */
135f9be9 617#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd
MCC		 618static int dvb_enable_media_tuner(struct dvb_frontend *fe)
619{
9239effd
MCC		 620 struct dvb_frontend_private *fepriv = fe->frontend_priv;
621 struct dvb_adapter *adapter = fe->dvb;
622 struct media_device *mdev = adapter->mdev;
623 struct media_entity *entity, *source;
624 struct media_link *link, *found_link = NULL;
625 int i, ret, n_links = 0, active_links = 0;
626
135f9be9
MCC		 627 fepriv->pipe_start_entity = NULL;
628
9239effd
MCC		 629 if (!mdev)
630 return 0;
631
632 entity = fepriv->dvbdev->entity;
135f9be9
MCC		 633 fepriv->pipe_start_entity = entity;
634
9239effd
MCC		 635 for (i = 0; i < entity->num_links; i++) {
636 link = &entity->links[i];
637 if (link->sink->entity == entity) {
638 found_link = link;
639 n_links++;
640 if (link->flags & MEDIA_LNK_FL_ENABLED)
641 active_links++;
642 }
643 }
644
645 if (!n_links || active_links == 1 || !found_link)
646 return 0;
647
648 /*
649 * If a frontend has more than one tuner linked, it is up to the driver
650 * to select with one will be the active one, as the frontend core can't
651 * guess. If the driver doesn't do that, it is a bug.
652 */
653 if (n_links > 1 && active_links != 1) {
654 dev_err(fe->dvb->device,
655 "WARNING: there are %d active links among %d tuners. This is a driver's bug!\n",
656 active_links, n_links);
657 return -EINVAL;
658 }
659
660 source = found_link->source->entity;
135f9be9 661 fepriv->pipe_start_entity = source;
9239effd
MCC		 662 for (i = 0; i < source->num_links; i++) {
663 struct media_entity *sink;
664 int flags = 0;
665
666 link = &source->links[i];
667 sink = link->sink->entity;
668
669 if (sink == entity)
670 flags = MEDIA_LNK_FL_ENABLED;
671
672 ret = media_entity_setup_link(link, flags);
673 if (ret) {
674 dev_err(fe->dvb->device,
675 "Couldn't change link %s->%s to %s. Error %d\n",
676 source->name, sink->name,
677 flags ? "enabled" : "disabled",
678 ret);
679 return ret;
680 } else
681 dev_dbg(fe->dvb->device,
682 "link %s->%s was %s\n",
683 source->name, sink->name,
684 flags ? "ENABLED" : "disabled");
685 }
9239effd
MCC		 686 return 0;
687}
135f9be9 688#endif
9239effd 689
1da177e4
LT		 690static int dvb_frontend_thread(void *data)
691{
0c53c70f
JS		 692 struct dvb_frontend *fe = data;
693 struct dvb_frontend_private *fepriv = fe->frontend_priv;
0df289a2 694 enum fe_status s;
c59e7870 695 enum dvbfe_algo algo;
c1bd57d3 696#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd 697 int ret;
c1bd57d3 698#endif
c59e7870 699
7e072221 700 bool re_tune = false;
6ae23224 701 bool semheld = false;
1da177e4 702
36bdbc3f 703 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 704
36cb557a
AQ		 705 fepriv->check_wrapped = 0;
706 fepriv->quality = 0;
707 fepriv->delay = 3*HZ;
1da177e4 708 fepriv->status = 0;
1da177e4 709 fepriv->wakeup = 0;
04c56d0e
AQ		 710 fepriv->reinitialise = 0;
711
135f9be9 712#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd
MCC		 713 ret = dvb_enable_media_tuner(fe);
714 if (ret) {
715 /* FIXME: return an error if it fails */
716 dev_info(fe->dvb->device,
717 "proceeding with FE task\n");
8a26a258 718 } else if (fepriv->pipe_start_entity) {
135f9be9
MCC		 719 ret = media_entity_pipeline_start(fepriv->pipe_start_entity,
720 &fepriv->pipe);
721 if (ret)
722 return ret;
9239effd 723 }
135f9be9 724#endif
9239effd 725
04c56d0e 726 dvb_frontend_init(fe);
1da177e4 727
83144186 728 set_freezable();
1da177e4
LT		 729 while (1) {
730 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 731restart:
94238e9b 732 wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 733 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
734 || freezing(current),
8eec1429
HP		 735 fepriv->delay);
736
737 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4 738 /* got signal or quitting */
6ae23224
JL		 739 if (!down_interruptible(&fepriv->sem))
740 semheld = true;
18ed2860 741 fe->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 742 break;
743 }
744
8eec1429 745 if (try_to_freeze())
6591691b 746 goto restart;
1da177e4
LT		 747
748 if (down_interruptible(&fepriv->sem))
749 break;
750
86f40cc3
AQ		 751 if (fepriv->reinitialise) {
752 dvb_frontend_init(fe);
42f4e774 753 if (fe->ops.set_tone && fepriv->tone != -1)
dea74869 754 fe->ops.set_tone(fe, fepriv->tone);
42f4e774 755 if (fe->ops.set_voltage && fepriv->voltage != -1)
dea74869 756 fe->ops.set_voltage(fe, fepriv->voltage);
86f40cc3
AQ		 757 fepriv->reinitialise = 0;
758 }
759
36cb557a 760 /* do an iteration of the tuning loop */
d772bd03 761 if (fe->ops.get_frontend_algo) {
c59e7870
MA		 762 algo = fe->ops.get_frontend_algo(fe);
763 switch (algo) {
764 case DVBFE_ALGO_HW:
36bdbc3f 765 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
c59e7870 766
d772bd03 767 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 768 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTATE_RETUNE\n", __func__);
7e072221 769 re_tune = true;
d772bd03 770 fepriv->state = FESTATE_TUNED;
45145b67
SA		 771 } else {
772 re_tune = false;
d772bd03
MA		 773 }
774
c59e7870 775 if (fe->ops.tune)
7e072221 776 fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s);
c59e7870 777
2fac9a0f 778 if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
36bdbc3f 779 dev_dbg(fe->dvb->device, "%s: state changed, adding current state\n", __func__);
d772bd03
MA		 780 dvb_frontend_add_event(fe, s);
781 fepriv->status = s;
782 }
c59e7870
MA		 783 break;
784 case DVBFE_ALGO_SW:
36bdbc3f 785 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
70d90635 786 dvb_frontend_swzigzag(fe);
c59e7870
MA		 787 break;
788 case DVBFE_ALGO_CUSTOM:
36bdbc3f 789 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
c59e7870 790 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 791 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTAT_RETUNE\n", __func__);
c59e7870
MA		 792 fepriv->state = FESTATE_TUNED;
793 }
794 /* Case where we are going to search for a carrier
795 * User asked us to retune again for some reason, possibly
796 * requesting a search with a new set of parameters
797 */
798 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
7bcbdf38 799 if (fe->ops.search) {
41da5320 800 fepriv->algo_status = fe->ops.search(fe);
c59e7870
MA		 801 /* We did do a search as was requested, the flags are
802 * now unset as well and has the flags wrt to search.
803 */
7bcbdf38
AJ		 804 } else {
805 fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
806 }
c59e7870
MA		 807 }
808 /* Track the carrier if the search was successful */
1b5d8716 809 if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) {
7bcbdf38
AJ		 810 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
811 fepriv->delay = HZ / 2;
812 }
556a0442 813 dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
7bcbdf38
AJ		 814 fe->ops.read_status(fe, &s);
815 if (s != fepriv->status) {
816 dvb_frontend_add_event(fe, s); /* update event list */
817 fepriv->status = s;
818 if (!(s & FE_HAS_LOCK)) {
819 fepriv->delay = HZ / 10;
820 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
821 } else {
822 fepriv->delay = 60 * HZ;
823 }
c59e7870
MA		 824 }
825 break;
826 default:
36bdbc3f 827 dev_dbg(fe->dvb->device, "%s: UNDEFINED ALGO !\n", __func__);
c59e7870
MA		 828 break;
829 }
830 } else {
4a4edcca 831 dvb_frontend_swzigzag(fe);
c59e7870 832 }
1da177e4
LT		 833 }
834
135f9be9 835#ifdef CONFIG_MEDIA_CONTROLLER_DVB
8a26a258
MCC		 836 if (fepriv->pipe_start_entity)
837 media_entity_pipeline_stop(fepriv->pipe_start_entity);
135f9be9
MCC		 838 fepriv->pipe_start_entity = NULL;
839#endif
840
608f62d6
OE		 841 if (dvb_powerdown_on_sleep) {
842 if (fe->ops.set_voltage)
843 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869 844 if (fe->ops.tuner_ops.sleep) {
41286d97
DH		 845 if (fe->ops.i2c_gate_ctrl)
846 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 847 fe->ops.tuner_ops.sleep(fe);
848 if (fe->ops.i2c_gate_ctrl)
849 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 850 }
dea74869
PB		 851 if (fe->ops.sleep)
852 fe->ops.sleep(fe);
1da177e4
LT		 853 }
854
8eec1429 855 fepriv->thread = NULL;
e36309f5 856 if (kthread_should_stop())
18ed2860 857 fe->exit = DVB_FE_DEVICE_REMOVED;
e36309f5 858 else
18ed2860 859 fe->exit = DVB_FE_NO_EXIT;
1da177e4
LT		 860 mb();
861
6ae23224
JL		 862 if (semheld)
863 up(&fepriv->sem);
1da177e4
LT		 864 dvb_frontend_wakeup(fe);
865 return 0;
866}
867
868static void dvb_frontend_stop(struct dvb_frontend *fe)
869{
0c53c70f 870 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 871
36bdbc3f 872 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 873
18ed2860
SK		 874 if (fe->exit != DVB_FE_DEVICE_REMOVED)
875 fe->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 876 mb();
877
8eec1429 878 if (!fepriv->thread)
1da177e4
LT		 879 return;
880
8eec1429 881 kthread_stop(fepriv->thread);
ca5be9cd 882
a0a4714c 883 sema_init(&fepriv->sem, 1);
1da177e4
LT		 884 fepriv->state = FESTATE_IDLE;
885
886 /* paranoia check in case a signal arrived */
8eec1429 887 if (fepriv->thread)
36bdbc3f
AP		 888 dev_warn(fe->dvb->device,
889 "dvb_frontend_stop: warning: thread %p won't exit\n",
8eec1429 890 fepriv->thread);
1da177e4
LT		 891}
892
83b75b04
N		 893s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
894{
895 return ((curtime.tv_usec < lasttime.tv_usec) ?
896 1000000 - lasttime.tv_usec + curtime.tv_usec :
897 curtime.tv_usec - lasttime.tv_usec);
898}
899EXPORT_SYMBOL(timeval_usec_diff);
900
901static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
902{
903 curtime->tv_usec += add_usec;
904 if (curtime->tv_usec >= 1000000) {
905 curtime->tv_usec -= 1000000;
906 curtime->tv_sec++;
907 }
908}
909
910/*
911 * Sleep until gettimeofday() > waketime + add_usec
912 * This needs to be as precise as possible, but as the delay is
913 * usually between 2ms and 32ms, it is done using a scheduled msleep
914 * followed by usleep (normally a busy-wait loop) for the remainder
915 */
916void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
917{
918 struct timeval lasttime;
919 s32 delta, newdelta;
920
921 timeval_usec_add(waketime, add_usec);
922
923 do_gettimeofday(&lasttime);
924 delta = timeval_usec_diff(lasttime, *waketime);
925 if (delta > 2500) {
926 msleep((delta - 1500) / 1000);
927 do_gettimeofday(&lasttime);
928 newdelta = timeval_usec_diff(lasttime, *waketime);
929 delta = (newdelta > delta) ? 0 : newdelta;
930 }
931 if (delta > 0)
932 udelay(delta);
933}
934EXPORT_SYMBOL(dvb_frontend_sleep_until);
935
1da177e4
LT		 936static int dvb_frontend_start(struct dvb_frontend *fe)
937{
938 int ret;
0c53c70f 939 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 940 struct task_struct *fe_thread;
1da177e4 941
36bdbc3f 942 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 943
8eec1429 944 if (fepriv->thread) {
18ed2860 945 if (fe->exit == DVB_FE_NO_EXIT)
1da177e4
LT		 946 return 0;
947 else
948 dvb_frontend_stop (fe);
949 }
950
951 if (signal_pending(current))
952 return -EINTR;
953 if (down_interruptible (&fepriv->sem))
954 return -EINTR;
955
956 fepriv->state = FESTATE_IDLE;
18ed2860 957 fe->exit = DVB_FE_NO_EXIT;
8eec1429 958 fepriv->thread = NULL;
1da177e4
LT		 959 mb();
960
8eec1429 961 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 962 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 963 if (IS_ERR(fe_thread)) {
964 ret = PTR_ERR(fe_thread);
36bdbc3f
AP		 965 dev_warn(fe->dvb->device,
966 "dvb_frontend_start: failed to start kthread (%d)\n",
967 ret);
1da177e4
LT		 968 up(&fepriv->sem);
969 return ret;
970 }
8eec1429 971 fepriv->thread = fe_thread;
1da177e4
LT		 972 return 0;
973}
974
2030c032 975static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
c471b331
OE		 976 u32 *freq_min, u32 *freq_max)
977{
978 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
979
980 if (fe->ops.info.frequency_max == 0)
981 *freq_max = fe->ops.tuner_ops.info.frequency_max;
982 else if (fe->ops.tuner_ops.info.frequency_max == 0)
983 *freq_max = fe->ops.info.frequency_max;
984 else
985 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
986
987 if (*freq_min == 0 || *freq_max == 0)
36bdbc3f
AP		 988 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
989 fe->dvb->num, fe->id);
c471b331
OE		 990}
991
5bfaadde 992static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
1fab46f0 993{
5bfaadde 994 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c471b331
OE		 995 u32 freq_min;
996 u32 freq_max;
997
1fab46f0 998 /* range check: frequency */
2030c032 999 dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
5bfaadde
MCC		 1000 if ((freq_min && c->frequency < freq_min) ||
1001 (freq_max && c->frequency > freq_max)) {
36bdbc3f
AP		 1002 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
1003 fe->dvb->num, fe->id, c->frequency,
1004 freq_min, freq_max);
1fab46f0
OE		 1005 return -EINVAL;
1006 }
1007
1008 /* range check: symbol rate */
5bfaadde
MCC		 1009 switch (c->delivery_system) {
1010 case SYS_DVBS:
1011 case SYS_DVBS2:
1012 case SYS_TURBO:
1013 case SYS_DVBC_ANNEX_A:
1014 case SYS_DVBC_ANNEX_C:
1fab46f0 1015 if ((fe->ops.info.symbol_rate_min &&
5bfaadde 1016 c->symbol_rate < fe->ops.info.symbol_rate_min) ||
1fab46f0 1017 (fe->ops.info.symbol_rate_max &&
5bfaadde 1018 c->symbol_rate > fe->ops.info.symbol_rate_max)) {
36bdbc3f
AP		 1019 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
1020 fe->dvb->num, fe->id, c->symbol_rate,
1021 fe->ops.info.symbol_rate_min,
1022 fe->ops.info.symbol_rate_max);
1fab46f0
OE		 1023 return -EINVAL;
1024 }
5bfaadde
MCC		 1025 default:
1026 break;
1fab46f0
OE		 1027 }
1028
1029 return 0;
1030}
1031
b6e760f3
PB		 1032static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
1033{
50727719 1034 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
b6e760f3 1035 int i;
149709f5 1036 u32 delsys;
b6e760f3 1037
149709f5 1038 delsys = c->delivery_system;
808d24d6 1039 memset(c, 0, offsetof(struct dtv_frontend_properties, strength));
149709f5 1040 c->delivery_system = delsys;
50727719
AO		 1041
1042 c->state = DTV_CLEAR;
26c924fe 1043
36bdbc3f
AP		 1044 dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n",
1045 __func__, c->delivery_system);
26c924fe 1046
50727719 1047 c->transmission_mode = TRANSMISSION_MODE_AUTO;
26c924fe 1048 c->bandwidth_hz = 0; /* AUTO */
50727719
AO		 1049 c->guard_interval = GUARD_INTERVAL_AUTO;
1050 c->hierarchy = HIERARCHY_AUTO;
26c924fe 1051 c->symbol_rate = 0;
50727719
AO		 1052 c->code_rate_HP = FEC_AUTO;
1053 c->code_rate_LP = FEC_AUTO;
26c924fe 1054 c->fec_inner = FEC_AUTO;
39ce61a8 1055 c->rolloff = ROLLOFF_AUTO;
26c924fe 1056 c->voltage = SEC_VOLTAGE_OFF;
26c924fe
MCC		 1057 c->sectone = SEC_TONE_OFF;
1058 c->pilot = PILOT_AUTO;
50727719 1059
a520ca97
MCC		 1060 c->isdbt_partial_reception = 0;
1061 c->isdbt_sb_mode = 0;
1062 c->isdbt_sb_subchannel = 0;
1063 c->isdbt_sb_segment_idx = 0;
1064 c->isdbt_sb_segment_count = 0;
1065 c->isdbt_layer_enabled = 0;
b6e760f3 1066 for (i = 0; i < 3; i++) {
50727719
AO		 1067 c->layer[i].fec = FEC_AUTO;
1068 c->layer[i].modulation = QAM_AUTO;
a520ca97
MCC		 1069 c->layer[i].interleaving = 0;
1070 c->layer[i].segment_count = 0;
b6e760f3
PB		 1071 }
1072
287cefd0 1073 c->stream_id = NO_STREAM_ID_FILTER;
26c924fe 1074
5bfaadde
MCC		 1075 switch (c->delivery_system) {
1076 case SYS_DVBS:
1077 case SYS_DVBS2:
1078 case SYS_TURBO:
1079 c->modulation = QPSK; /* implied for DVB-S in legacy API */
1080 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
1081 break;
1082 case SYS_ATSC:
1083 c->modulation = VSB_8;
1084 break;
8e281faf
AT		 1085 case SYS_ISDBS:
1086 c->symbol_rate = 28860000;
1087 c->rolloff = ROLLOFF_35;
1088 c->bandwidth_hz = c->symbol_rate / 100 * 135;
1089 break;
5bfaadde
MCC		 1090 default:
1091 c->modulation = QAM_AUTO;
1092 break;
1093 }
1094
33eebec5
AP		 1095 c->lna = LNA_AUTO;
1096
b6e760f3
PB		 1097 return 0;
1098}
1099
1100#define _DTV_CMD(n, s, b) \
1101[n] = { \
1102 .name = #n, \
1103 .cmd = n, \
1104 .set = s,\
1105 .buffer = b \
1106}
1107
ec05a642 1108static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
06d3a396
MCC		 1109 _DTV_CMD(DTV_TUNE, 1, 0),
1110 _DTV_CMD(DTV_CLEAR, 1, 0),
6b73eeaf
ST		 1111
1112 /* Set */
06d3a396
MCC		 1113 _DTV_CMD(DTV_FREQUENCY, 1, 0),
1114 _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
1115 _DTV_CMD(DTV_MODULATION, 1, 0),
1116 _DTV_CMD(DTV_INVERSION, 1, 0),
1117 _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
1118 _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
1119 _DTV_CMD(DTV_INNER_FEC, 1, 0),
1120 _DTV_CMD(DTV_VOLTAGE, 1, 0),
1121 _DTV_CMD(DTV_TONE, 1, 0),
1122 _DTV_CMD(DTV_PILOT, 1, 0),
1123 _DTV_CMD(DTV_ROLLOFF, 1, 0),
1124 _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
1125 _DTV_CMD(DTV_HIERARCHY, 1, 0),
1126 _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
1127 _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
1128 _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
1129 _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
224b6642 1130 _DTV_CMD(DTV_INTERLEAVING, 1, 0),
b6e760f3
PB		 1131
1132 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
1133 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
1134 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
1135 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
1136 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
e7b7949a 1137 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
b6e760f3
PB		 1138 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
1139 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
1140 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
1141 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
1142 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
1143 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
1144 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
1145 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
1146 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
1147 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
1148 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
1149 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
1150
287cefd0
EP		 1151 _DTV_CMD(DTV_STREAM_ID, 1, 0),
1152 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
8a2697ab 1153 _DTV_CMD(DTV_LNA, 1, 0),
98293ef3 1154
6b73eeaf 1155 /* Get */
06d3a396
MCC		 1156 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
1157 _DTV_CMD(DTV_API_VERSION, 0, 0),
ba2780c7
MA		 1158
1159 _DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
ca689488
MK		 1160
1161 _DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
1162 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
1163
1164 _DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
ca689488
MK		 1165 _DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
1166 _DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
1167 _DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
1168 _DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
1169 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
ca689488
MK		 1170 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
1171 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
1172 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
1173 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
1174 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
1175 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
1176 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
7cd4ece5
MCC		 1177
1178 /* Statistics API */
1179 _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH, 0, 0),
1180 _DTV_CMD(DTV_STAT_CNR, 0, 0),
1181 _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0, 0),
1182 _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0, 0),
1183 _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0, 0),
1184 _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0, 0),
1185 _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT, 0, 0),
1186 _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
6b73eeaf
ST		 1187};
1188
36bdbc3f 1189static void dtv_property_dump(struct dvb_frontend *fe, struct dtv_property *tvp)
6b73eeaf
ST		 1190{
1191 int i;
1192
106ff9e0 1193 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
36bdbc3f
AP		 1194 dev_warn(fe->dvb->device, "%s: tvp.cmd = 0x%08x undefined\n",
1195 __func__, tvp->cmd);
4aae8efb
DB		 1196 return;
1197 }
1198
36bdbc3f
AP		 1199 dev_dbg(fe->dvb->device, "%s: tvp.cmd = 0x%08x (%s)\n", __func__,
1200 tvp->cmd, dtv_cmds[tvp->cmd].name);
6b73eeaf 1201
36bdbc3f
AP		 1202 if (dtv_cmds[tvp->cmd].buffer) {
1203 dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
1204 __func__, tvp->u.buffer.len);
6b73eeaf
ST		 1205
1206 for(i = 0; i < tvp->u.buffer.len; i++)
36bdbc3f
AP		 1207 dev_dbg(fe->dvb->device,
1208 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1209 __func__, i, tvp->u.buffer.data[i]);
1210 } else {
1211 dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__,
1212 tvp->u.data);
1213 }
6b73eeaf
ST		 1214}
1215
ee33c525
ST		 1216/* Synchronise the legacy tuning parameters into the cache, so that demodulator
1217 * drivers can use a single set_frontend tuning function, regardless of whether
1218 * it's being used for the legacy or new API, reducing code and complexity.
1219 */
5bfaadde
MCC		 1220static int dtv_property_cache_sync(struct dvb_frontend *fe,
1221 struct dtv_frontend_properties *c,
1222 const struct dvb_frontend_parameters *p)
ee33c525 1223{
ee33c525
ST		 1224 c->frequency = p->frequency;
1225 c->inversion = p->inversion;
1226
5bfaadde
MCC		 1227 switch (dvbv3_type(c->delivery_system)) {
1228 case DVBV3_QPSK:
36bdbc3f 1229 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
ee33c525
ST		 1230 c->symbol_rate = p->u.qpsk.symbol_rate;
1231 c->fec_inner = p->u.qpsk.fec_inner;
1232 break;
5bfaadde 1233 case DVBV3_QAM:
36bdbc3f 1234 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
ee33c525
ST		 1235 c->symbol_rate = p->u.qam.symbol_rate;
1236 c->fec_inner = p->u.qam.fec_inner;
1237 c->modulation = p->u.qam.modulation;
1238 break;
5bfaadde 1239 case DVBV3_OFDM:
36bdbc3f
AP		 1240 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
1241
9a27e6a0
MCC		 1242 switch (p->u.ofdm.bandwidth) {
1243 case BANDWIDTH_10_MHZ:
1244 c->bandwidth_hz = 10000000;
1245 break;
1246 case BANDWIDTH_8_MHZ:
75b7f943 1247 c->bandwidth_hz = 8000000;
9a27e6a0
MCC		 1248 break;
1249 case BANDWIDTH_7_MHZ:
1250 c->bandwidth_hz = 7000000;
1251 break;
1252 case BANDWIDTH_6_MHZ:
1253 c->bandwidth_hz = 6000000;
1254 break;
1255 case BANDWIDTH_5_MHZ:
1256 c->bandwidth_hz = 5000000;
1257 break;
1258 case BANDWIDTH_1_712_MHZ:
1259 c->bandwidth_hz = 1712000;
1260 break;
1261 case BANDWIDTH_AUTO:
75b7f943 1262 c->bandwidth_hz = 0;
9a27e6a0
MCC		 1263 }
1264
ee33c525
ST		 1265 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1266 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1267 c->modulation = p->u.ofdm.constellation;
1268 c->transmission_mode = p->u.ofdm.transmission_mode;
1269 c->guard_interval = p->u.ofdm.guard_interval;
1270 c->hierarchy = p->u.ofdm.hierarchy_information;
1271 break;
5bfaadde 1272 case DVBV3_ATSC:
36bdbc3f 1273 dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__);
ee33c525 1274 c->modulation = p->u.vsb.modulation;
ca689488
MK		 1275 if (c->delivery_system == SYS_ATSCMH)
1276 break;
80a773c9
ST		 1277 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1278 c->delivery_system = SYS_ATSC;
1279 else
1280 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525 1281 break;
5bfaadde 1282 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1283 dev_err(fe->dvb->device,
1284 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1285 __func__, c->delivery_system);
5bfaadde 1286 return -EINVAL;
ee33c525 1287 }
5bfaadde
MCC		 1288
1289 return 0;
ee33c525
ST		 1290}
1291
d5748f10
ST		 1292/* Ensure the cached values are set correctly in the frontend
1293 * legacy tuning structures, for the advanced tuning API.
1294 */
5bfaadde 1295static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
a689e365 1296 struct dvb_frontend_parameters *p)
6b73eeaf 1297{
15cc2bb3 1298 const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1299
d5748f10
ST		 1300 p->frequency = c->frequency;
1301 p->inversion = c->inversion;
6b73eeaf 1302
5bfaadde
MCC		 1303 switch (dvbv3_type(c->delivery_system)) {
1304 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1305 dev_err(fe->dvb->device,
1306 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1307 __func__, c->delivery_system);
5bfaadde
MCC		 1308 return -EINVAL;
1309 case DVBV3_QPSK:
36bdbc3f 1310 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
d5748f10
ST		 1311 p->u.qpsk.symbol_rate = c->symbol_rate;
1312 p->u.qpsk.fec_inner = c->fec_inner;
1313 break;
5bfaadde 1314 case DVBV3_QAM:
36bdbc3f 1315 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
d5748f10
ST		 1316 p->u.qam.symbol_rate = c->symbol_rate;
1317 p->u.qam.fec_inner = c->fec_inner;
1318 p->u.qam.modulation = c->modulation;
1319 break;
5bfaadde 1320 case DVBV3_OFDM:
36bdbc3f 1321 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
9a27e6a0
MCC		 1322 switch (c->bandwidth_hz) {
1323 case 10000000:
1324 p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
1325 break;
1326 case 8000000:
75b7f943 1327 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
9a27e6a0
MCC		 1328 break;
1329 case 7000000:
1330 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1331 break;
1332 case 6000000:
1333 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1334 break;
1335 case 5000000:
1336 p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
1337 break;
1338 case 1712000:
1339 p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
1340 break;
1341 case 0:
1342 default:
75b7f943 1343 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
9a27e6a0 1344 }
d5748f10
ST		 1345 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1346 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1347 p->u.ofdm.constellation = c->modulation;
1348 p->u.ofdm.transmission_mode = c->transmission_mode;
1349 p->u.ofdm.guard_interval = c->guard_interval;
1350 p->u.ofdm.hierarchy_information = c->hierarchy;
1351 break;
5bfaadde 1352 case DVBV3_ATSC:
36bdbc3f 1353 dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__);
d5748f10
ST		 1354 p->u.vsb.modulation = c->modulation;
1355 break;
1356 }
5bfaadde 1357 return 0;
6b73eeaf
ST		 1358}
1359
a689e365
MCC		 1360/**
1361 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1362 * @fe: struct dvb_frontend pointer
1363 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1364 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1365 *
1366 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1367 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1368 * If p_out is not null, it will update the DVBv3 params pointed by it.
1369 */
1370static int dtv_get_frontend(struct dvb_frontend *fe,
a689e365
MCC		 1371 struct dvb_frontend_parameters *p_out)
1372{
a689e365
MCC		 1373 int r;
1374
a689e365 1375 if (fe->ops.get_frontend) {
7c61d80a 1376 r = fe->ops.get_frontend(fe);
a689e365
MCC		 1377 if (unlikely(r < 0))
1378 return r;
7c61d80a 1379 if (p_out)
a689e365
MCC		 1380 dtv_property_legacy_params_sync(fe, p_out);
1381 return 0;
1382 }
1383
7c61d80a 1384 /* As everything is in cache, get_frontend fops are always supported */
b1e9a650 1385 return 0;
a689e365
MCC		 1386}
1387
16ef8def 1388static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5 1389 unsigned int cmd, void *parg);
16ef8def 1390static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1391 unsigned int cmd, void *parg);
1392
072ce0c5 1393static int dtv_property_process_get(struct dvb_frontend *fe,
a689e365 1394 const struct dtv_frontend_properties *c,
072ce0c5 1395 struct dtv_property *tvp,
16ef8def 1396 struct file *file)
363429a0 1397{
5bfaadde 1398 int r, ncaps;
bfbf2dae 1399
363429a0 1400 switch(tvp->cmd) {
ba2780c7 1401 case DTV_ENUM_DELSYS:
5bfaadde 1402 ncaps = 0;
0123f29c 1403 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
5bfaadde
MCC		 1404 tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
1405 ncaps++;
1406 }
1407 tvp->u.buffer.len = ncaps;
ba2780c7 1408 break;
363429a0 1409 case DTV_FREQUENCY:
50727719 1410 tvp->u.data = c->frequency;
363429a0
ST		 1411 break;
1412 case DTV_MODULATION:
50727719 1413 tvp->u.data = c->modulation;
363429a0 1414 break;
75b7f943 1415 case DTV_BANDWIDTH_HZ:
50727719 1416 tvp->u.data = c->bandwidth_hz;
363429a0
ST		 1417 break;
1418 case DTV_INVERSION:
50727719 1419 tvp->u.data = c->inversion;
363429a0
ST		 1420 break;
1421 case DTV_SYMBOL_RATE:
50727719 1422 tvp->u.data = c->symbol_rate;
363429a0
ST		 1423 break;
1424 case DTV_INNER_FEC:
50727719 1425 tvp->u.data = c->fec_inner;
363429a0
ST		 1426 break;
1427 case DTV_PILOT:
50727719 1428 tvp->u.data = c->pilot;
363429a0
ST		 1429 break;
1430 case DTV_ROLLOFF:
50727719 1431 tvp->u.data = c->rolloff;
363429a0
ST		 1432 break;
1433 case DTV_DELIVERY_SYSTEM:
50727719 1434 tvp->u.data = c->delivery_system;
363429a0 1435 break;
363429a0 1436 case DTV_VOLTAGE:
50727719 1437 tvp->u.data = c->voltage;
363429a0
ST		 1438 break;
1439 case DTV_TONE:
50727719 1440 tvp->u.data = c->sectone;
363429a0 1441 break;
eacf8d8d
ST		 1442 case DTV_API_VERSION:
1443 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1444 break;
a4de91be 1445 case DTV_CODE_RATE_HP:
50727719 1446 tvp->u.data = c->code_rate_HP;
a4de91be
ST		 1447 break;
1448 case DTV_CODE_RATE_LP:
50727719 1449 tvp->u.data = c->code_rate_LP;
a4de91be 1450 break;
b87625f0 1451 case DTV_GUARD_INTERVAL:
50727719 1452 tvp->u.data = c->guard_interval;
b87625f0
ST		 1453 break;
1454 case DTV_TRANSMISSION_MODE:
50727719 1455 tvp->u.data = c->transmission_mode;
b87625f0 1456 break;
ef526f42 1457 case DTV_HIERARCHY:
50727719 1458 tvp->u.data = c->hierarchy;
ef526f42 1459 break;
224b6642
AP		 1460 case DTV_INTERLEAVING:
1461 tvp->u.data = c->interleaving;
1462 break;
b6e760f3
PB		 1463
1464 /* ISDB-T Support here */
1465 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1466 tvp->u.data = c->isdbt_partial_reception;
b6e760f3
PB		 1467 break;
1468 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1469 tvp->u.data = c->isdbt_sb_mode;
b6e760f3
PB		 1470 break;
1471 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1472 tvp->u.data = c->isdbt_sb_subchannel;
b6e760f3
PB		 1473 break;
1474 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1475 tvp->u.data = c->isdbt_sb_segment_idx;
b6e760f3
PB		 1476 break;
1477 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1478 tvp->u.data = c->isdbt_sb_segment_count;
b6e760f3 1479 break;
e7b7949a 1480 case DTV_ISDBT_LAYER_ENABLED:
50727719 1481 tvp->u.data = c->isdbt_layer_enabled;
e7b7949a 1482 break;
b6e760f3 1483 case DTV_ISDBT_LAYERA_FEC:
50727719 1484 tvp->u.data = c->layer[0].fec;
b6e760f3
PB		 1485 break;
1486 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1487 tvp->u.data = c->layer[0].modulation;
b6e760f3
PB		 1488 break;
1489 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1490 tvp->u.data = c->layer[0].segment_count;
b6e760f3
PB		 1491 break;
1492 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1493 tvp->u.data = c->layer[0].interleaving;
b6e760f3
PB		 1494 break;
1495 case DTV_ISDBT_LAYERB_FEC:
50727719 1496 tvp->u.data = c->layer[1].fec;
b6e760f3
PB		 1497 break;
1498 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1499 tvp->u.data = c->layer[1].modulation;
b6e760f3
PB		 1500 break;
1501 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1502 tvp->u.data = c->layer[1].segment_count;
b6e760f3
PB		 1503 break;
1504 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1505 tvp->u.data = c->layer[1].interleaving;
b6e760f3
PB		 1506 break;
1507 case DTV_ISDBT_LAYERC_FEC:
50727719 1508 tvp->u.data = c->layer[2].fec;
b6e760f3
PB		 1509 break;
1510 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1511 tvp->u.data = c->layer[2].modulation;
b6e760f3
PB		 1512 break;
1513 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1514 tvp->u.data = c->layer[2].segment_count;
b6e760f3
PB		 1515 break;
1516 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1517 tvp->u.data = c->layer[2].interleaving;
b6e760f3 1518 break;
287cefd0
EP		 1519
1520 /* Multistream support */
1521 case DTV_STREAM_ID:
1522 case DTV_DVBT2_PLP_ID_LEGACY:
1523 tvp->u.data = c->stream_id;
94d56ffa 1524 break;
ca689488
MK		 1525
1526 /* ATSC-MH */
1527 case DTV_ATSCMH_FIC_VER:
1528 tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
1529 break;
1530 case DTV_ATSCMH_PARADE_ID:
1531 tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
1532 break;
1533 case DTV_ATSCMH_NOG:
1534 tvp->u.data = fe->dtv_property_cache.atscmh_nog;
1535 break;
1536 case DTV_ATSCMH_TNOG:
1537 tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
1538 break;
1539 case DTV_ATSCMH_SGN:
1540 tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
1541 break;
1542 case DTV_ATSCMH_PRC:
1543 tvp->u.data = fe->dtv_property_cache.atscmh_prc;
1544 break;
1545 case DTV_ATSCMH_RS_FRAME_MODE:
1546 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
1547 break;
1548 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1549 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
1550 break;
1551 case DTV_ATSCMH_RS_CODE_MODE_PRI:
1552 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
1553 break;
1554 case DTV_ATSCMH_RS_CODE_MODE_SEC:
1555 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
1556 break;
1557 case DTV_ATSCMH_SCCC_BLOCK_MODE:
1558 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
1559 break;
1560 case DTV_ATSCMH_SCCC_CODE_MODE_A:
1561 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
1562 break;
1563 case DTV_ATSCMH_SCCC_CODE_MODE_B:
1564 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
1565 break;
1566 case DTV_ATSCMH_SCCC_CODE_MODE_C:
1567 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
1568 break;
1569 case DTV_ATSCMH_SCCC_CODE_MODE_D:
1570 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
1571 break;
ca689488 1572
33eebec5
AP		 1573 case DTV_LNA:
1574 tvp->u.data = c->lna;
1575 break;
1576
7cd4ece5
MCC		 1577 /* Fill quality measures */
1578 case DTV_STAT_SIGNAL_STRENGTH:
1579 tvp->u.st = c->strength;
1580 break;
1581 case DTV_STAT_CNR:
1582 tvp->u.st = c->cnr;
1583 break;
1584 case DTV_STAT_PRE_ERROR_BIT_COUNT:
1585 tvp->u.st = c->pre_bit_error;
1586 break;
1587 case DTV_STAT_PRE_TOTAL_BIT_COUNT:
1588 tvp->u.st = c->pre_bit_count;
1589 break;
1590 case DTV_STAT_POST_ERROR_BIT_COUNT:
1591 tvp->u.st = c->post_bit_error;
1592 break;
1593 case DTV_STAT_POST_TOTAL_BIT_COUNT:
1594 tvp->u.st = c->post_bit_count;
1595 break;
1596 case DTV_STAT_ERROR_BLOCK_COUNT:
1597 tvp->u.st = c->block_error;
1598 break;
1599 case DTV_STAT_TOTAL_BLOCK_COUNT:
1600 tvp->u.st = c->block_count;
1601 break;
363429a0 1602 default:
94a93e5f
MCC		 1603 dev_dbg(fe->dvb->device,
1604 "%s: FE property %d doesn't exist\n",
1605 __func__, tvp->cmd);
aff8ab5c 1606 return -EINVAL;
363429a0
ST		 1607 }
1608
e23d9ae3
AO		 1609 /* Allow the frontend to override outgoing properties */
1610 if (fe->ops.get_property) {
1611 r = fe->ops.get_property(fe, tvp);
1612 if (r < 0)
1613 return r;
1614 }
1615
36bdbc3f 1616 dtv_property_dump(fe, tvp);
639544d7 1617
aff8ab5c 1618 return 0;
363429a0
ST		 1619}
1620
5bfaadde
MCC		 1621static int dtv_set_frontend(struct dvb_frontend *fe);
1622
04be0f76
MCC		 1623static bool is_dvbv3_delsys(u32 delsys)
1624{
1625 bool status;
1626
1627 status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
1628 (delsys == SYS_DVBS) || (delsys == SYS_ATSC);
1629
1630 return status;
1631}
1632
52dee392
MCC		 1633/**
1634 * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
1635 * @fe: struct frontend;
1636 * @delsys: DVBv5 type that will be used for emulation
1637 *
1638 * Provides emulation for delivery systems that are compatible with the old
1639 * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
1640 * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
1641 * parameters are compatible with DVB-S spec.
1642 */
1643static int emulate_delivery_system(struct dvb_frontend *fe, u32 delsys)
04be0f76 1644{
be431b16 1645 int i;
04be0f76 1646 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
04be0f76 1647
3626479e
MCC		 1648 c->delivery_system = delsys;
1649
04be0f76 1650 /*
52dee392 1651 * If the call is for ISDB-T, put it into full-seg, auto mode, TV
04be0f76 1652 */
52dee392
MCC		 1653 if (c->delivery_system == SYS_ISDBT) {
1654 dev_dbg(fe->dvb->device,
1655 "%s: Using defaults for SYS_ISDBT\n",
1656 __func__);
04be0f76 1657
52dee392
MCC		 1658 if (!c->bandwidth_hz)
1659 c->bandwidth_hz = 6000000;
1660
1661 c->isdbt_partial_reception = 0;
1662 c->isdbt_sb_mode = 0;
1663 c->isdbt_sb_subchannel = 0;
1664 c->isdbt_sb_segment_idx = 0;
1665 c->isdbt_sb_segment_count = 0;
1666 c->isdbt_layer_enabled = 7;
1667 for (i = 0; i < 3; i++) {
1668 c->layer[i].fec = FEC_AUTO;
1669 c->layer[i].modulation = QAM_AUTO;
1670 c->layer[i].interleaving = 0;
1671 c->layer[i].segment_count = 0;
04be0f76
MCC		 1672 }
1673 }
36bdbc3f 1674 dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n",
52dee392 1675 __func__, c->delivery_system);
9474c5e6 1676
04be0f76
MCC		 1677 return 0;
1678}
1679
52dee392
MCC		 1680/**
1681 * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
1682 * @fe: frontend struct
1683 * @desired_system: delivery system requested by the user
1684 *
1685 * A DVBv5 call know what's the desired system it wants. So, set it.
1686 *
1687 * There are, however, a few known issues with early DVBv5 applications that
1688 * are also handled by this logic:
1689 *
1690 * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
1691 * This is an API violation, but, as we don't want to break userspace,
1692 * convert it to the first supported delivery system.
1693 * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
1694 * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
1695 * ISDB-T provided backward compat with DVB-T.
1696 */
be431b16
MCC		 1697static int dvbv5_set_delivery_system(struct dvb_frontend *fe,
1698 u32 desired_system)
1699{
1700 int ncaps;
1701 u32 delsys = SYS_UNDEFINED;
1702 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1703 enum dvbv3_emulation_type type;
1704
1705 /*
1706 * It was reported that some old DVBv5 applications were
1707 * filling delivery_system with SYS_UNDEFINED. If this happens,
1708 * assume that the application wants to use the first supported
1709 * delivery system.
1710 */
52dee392
MCC		 1711 if (desired_system == SYS_UNDEFINED)
1712 desired_system = fe->ops.delsys[0];
be431b16
MCC		 1713
1714 /*
52dee392
MCC		 1715 * This is a DVBv5 call. So, it likely knows the supported
1716 * delivery systems. So, check if the desired delivery system is
1717 * supported
1718 */
be431b16 1719 ncaps = 0;
0123f29c 1720 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
be431b16
MCC		 1721 if (fe->ops.delsys[ncaps] == desired_system) {
1722 c->delivery_system = desired_system;
1723 dev_dbg(fe->dvb->device,
1724 "%s: Changing delivery system to %d\n",
1725 __func__, desired_system);
1726 return 0;
1727 }
1728 ncaps++;
1729 }
1730
1731 /*
52dee392
MCC		 1732 * The requested delivery system isn't supported. Maybe userspace
1733 * is requesting a DVBv3 compatible delivery system.
1734 *
1735 * The emulation only works if the desired system is one of the
1736 * delivery systems supported by DVBv3 API
be431b16 1737 */
be431b16
MCC		 1738 if (!is_dvbv3_delsys(desired_system)) {
1739 dev_dbg(fe->dvb->device,
52dee392
MCC		 1740 "%s: Delivery system %d not supported.\n",
1741 __func__, desired_system);
be431b16
MCC		 1742 return -EINVAL;
1743 }
1744
52dee392
MCC		 1745 type = dvbv3_type(desired_system);
1746
be431b16
MCC		 1747 /*
1748 * Get the last non-DVBv3 delivery system that has the same type
1749 * of the desired system
1750 */
1751 ncaps = 0;
0123f29c 1752 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392 1753 if (dvbv3_type(fe->ops.delsys[ncaps]) == type)
be431b16
MCC		 1754 delsys = fe->ops.delsys[ncaps];
1755 ncaps++;
1756 }
52dee392 1757
be431b16
MCC		 1758 /* There's nothing compatible with the desired delivery system */
1759 if (delsys == SYS_UNDEFINED) {
1760 dev_dbg(fe->dvb->device,
52dee392
MCC		 1761 "%s: Delivery system %d not supported on emulation mode.\n",
1762 __func__, desired_system);
be431b16
MCC		 1763 return -EINVAL;
1764 }
1765
52dee392
MCC		 1766 dev_dbg(fe->dvb->device,
1767 "%s: Using delivery system %d emulated as if it were %d\n",
1768 __func__, delsys, desired_system);
1769
1770 return emulate_delivery_system(fe, desired_system);
be431b16
MCC		 1771}
1772
52dee392
MCC		 1773/**
1774 * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
1775 * @fe: frontend struct
1776 *
1777 * A DVBv3 call doesn't know what's the desired system it wants. It also
1778 * doesn't allow to switch between different types. Due to that, userspace
1779 * should use DVBv5 instead.
1780 * However, in order to avoid breaking userspace API, limited backward
1781 * compatibility support is provided.
1782 *
1783 * There are some delivery systems that are incompatible with DVBv3 calls.
1784 *
1785 * This routine should work fine for frontends that support just one delivery
1786 * system.
1787 *
1788 * For frontends that support multiple frontends:
1789 * 1) It defaults to use the first supported delivery system. There's an
1790 * userspace application that allows changing it at runtime;
1791 *
1792 * 2) If the current delivery system is not compatible with DVBv3, it gets
1793 * the first one that it is compatible.
1794 *
1795 * NOTE: in order for this to work with applications like Kaffeine that
1796 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1797 * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
1798 * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
1799 * to DVB-S.
1800 */
be431b16
MCC		 1801static int dvbv3_set_delivery_system(struct dvb_frontend *fe)
1802{
1803 int ncaps;
be431b16
MCC		 1804 u32 delsys = SYS_UNDEFINED;
1805 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
be431b16
MCC		 1806
1807 /* If not set yet, defaults to the first supported delivery system */
1808 if (c->delivery_system == SYS_UNDEFINED)
1809 c->delivery_system = fe->ops.delsys[0];
1810
be431b16
MCC		 1811 /*
1812 * Trivial case: just use the current one, if it already a DVBv3
1813 * delivery system
1814 */
1815 if (is_dvbv3_delsys(c->delivery_system)) {
1816 dev_dbg(fe->dvb->device,
1817 "%s: Using delivery system to %d\n",
1818 __func__, c->delivery_system);
1819 return 0;
1820 }
1821
be431b16 1822 /*
52dee392
MCC		 1823 * Seek for the first delivery system that it is compatible with a
1824 * DVBv3 standard
be431b16
MCC		 1825 */
1826 ncaps = 0;
0123f29c 1827 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392
MCC		 1828 if (dvbv3_type(fe->ops.delsys[ncaps]) != DVBV3_UNKNOWN) {
1829 delsys = fe->ops.delsys[ncaps];
be431b16
MCC		 1830 break;
1831 }
1832 ncaps++;
1833 }
1834 if (delsys == SYS_UNDEFINED) {
52dee392
MCC		 1835 dev_dbg(fe->dvb->device,
1836 "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
1837 __func__);
1838 return -EINVAL;
be431b16 1839 }
52dee392 1840 return emulate_delivery_system(fe, delsys);
be431b16
MCC		 1841}
1842
072ce0c5
MCC		 1843static int dtv_property_process_set(struct dvb_frontend *fe,
1844 struct dtv_property *tvp,
072ce0c5 1845 struct file *file)
6b73eeaf
ST		 1846{
1847 int r = 0;
50727719 1848 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1849
bfbf2dae 1850 /* Allow the frontend to validate incoming properties */
aff8ab5c 1851 if (fe->ops.set_property) {
bfbf2dae 1852 r = fe->ops.set_property(fe, tvp);
aff8ab5c
AO		 1853 if (r < 0)
1854 return r;
1855 }
bfbf2dae 1856
6b73eeaf 1857 switch(tvp->cmd) {
e7fee0f3 1858 case DTV_CLEAR:
5bfaadde
MCC		 1859 /*
1860 * Reset a cache of data specific to the frontend here. This does
6b73eeaf
ST		 1861 * not effect hardware.
1862 */
b6e760f3 1863 dvb_frontend_clear_cache(fe);
6b73eeaf 1864 break;
e7fee0f3 1865 case DTV_TUNE:
6b73eeaf 1866 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1867 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1868 * ioctl.
6b73eeaf 1869 */
50727719 1870 c->state = tvp->cmd;
36bdbc3f
AP		 1871 dev_dbg(fe->dvb->device, "%s: Finalised property cache\n",
1872 __func__);
d5748f10 1873
5bfaadde 1874 r = dtv_set_frontend(fe);
6b73eeaf 1875 break;
363429a0 1876 case DTV_FREQUENCY:
50727719 1877 c->frequency = tvp->u.data;
6b73eeaf 1878 break;
363429a0 1879 case DTV_MODULATION:
50727719 1880 c->modulation = tvp->u.data;
6b73eeaf 1881 break;
75b7f943 1882 case DTV_BANDWIDTH_HZ:
50727719 1883 c->bandwidth_hz = tvp->u.data;
6b73eeaf 1884 break;
363429a0 1885 case DTV_INVERSION:
50727719 1886 c->inversion = tvp->u.data;
6b73eeaf 1887 break;
363429a0 1888 case DTV_SYMBOL_RATE:
50727719 1889 c->symbol_rate = tvp->u.data;
6b73eeaf 1890 break;
363429a0 1891 case DTV_INNER_FEC:
50727719 1892 c->fec_inner = tvp->u.data;
6b73eeaf 1893 break;
363429a0 1894 case DTV_PILOT:
50727719 1895 c->pilot = tvp->u.data;
6b73eeaf 1896 break;
363429a0 1897 case DTV_ROLLOFF:
50727719 1898 c->rolloff = tvp->u.data;
6b73eeaf 1899 break;
363429a0 1900 case DTV_DELIVERY_SYSTEM:
be431b16 1901 r = dvbv5_set_delivery_system(fe, tvp->u.data);
6b73eeaf 1902 break;
363429a0 1903 case DTV_VOLTAGE:
50727719 1904 c->voltage = tvp->u.data;
16ef8def 1905 r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
50727719 1906 (void *)c->voltage);
13c97bf5 1907 break;
363429a0 1908 case DTV_TONE:
50727719 1909 c->sectone = tvp->u.data;
16ef8def 1910 r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
50727719 1911 (void *)c->sectone);
13c97bf5 1912 break;
a4de91be 1913 case DTV_CODE_RATE_HP:
50727719 1914 c->code_rate_HP = tvp->u.data;
a4de91be
ST		 1915 break;
1916 case DTV_CODE_RATE_LP:
50727719 1917 c->code_rate_LP = tvp->u.data;
a4de91be 1918 break;
b87625f0 1919 case DTV_GUARD_INTERVAL:
50727719 1920 c->guard_interval = tvp->u.data;
b87625f0
ST		 1921 break;
1922 case DTV_TRANSMISSION_MODE:
50727719 1923 c->transmission_mode = tvp->u.data;
b87625f0 1924 break;
ef526f42 1925 case DTV_HIERARCHY:
50727719 1926 c->hierarchy = tvp->u.data;
ef526f42 1927 break;
224b6642
AP		 1928 case DTV_INTERLEAVING:
1929 c->interleaving = tvp->u.data;
1930 break;
b6e760f3
PB		 1931
1932 /* ISDB-T Support here */
1933 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1934 c->isdbt_partial_reception = tvp->u.data;
b6e760f3
PB		 1935 break;
1936 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1937 c->isdbt_sb_mode = tvp->u.data;
b6e760f3
PB		 1938 break;
1939 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1940 c->isdbt_sb_subchannel = tvp->u.data;
b6e760f3
PB		 1941 break;
1942 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1943 c->isdbt_sb_segment_idx = tvp->u.data;
b6e760f3
PB		 1944 break;
1945 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1946 c->isdbt_sb_segment_count = tvp->u.data;
b6e760f3 1947 break;
e7b7949a 1948 case DTV_ISDBT_LAYER_ENABLED:
50727719 1949 c->isdbt_layer_enabled = tvp->u.data;
e7b7949a 1950 break;
b6e760f3 1951 case DTV_ISDBT_LAYERA_FEC:
50727719 1952 c->layer[0].fec = tvp->u.data;
b6e760f3
PB		 1953 break;
1954 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1955 c->layer[0].modulation = tvp->u.data;
b6e760f3
PB		 1956 break;
1957 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1958 c->layer[0].segment_count = tvp->u.data;
b6e760f3
PB		 1959 break;
1960 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1961 c->layer[0].interleaving = tvp->u.data;
b6e760f3
PB		 1962 break;
1963 case DTV_ISDBT_LAYERB_FEC:
50727719 1964 c->layer[1].fec = tvp->u.data;
b6e760f3
PB		 1965 break;
1966 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1967 c->layer[1].modulation = tvp->u.data;
b6e760f3
PB		 1968 break;
1969 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1970 c->layer[1].segment_count = tvp->u.data;
b6e760f3
PB		 1971 break;
1972 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1973 c->layer[1].interleaving = tvp->u.data;
b6e760f3
PB		 1974 break;
1975 case DTV_ISDBT_LAYERC_FEC:
50727719 1976 c->layer[2].fec = tvp->u.data;
b6e760f3
PB		 1977 break;
1978 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1979 c->layer[2].modulation = tvp->u.data;
b6e760f3
PB		 1980 break;
1981 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1982 c->layer[2].segment_count = tvp->u.data;
b6e760f3
PB		 1983 break;
1984 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1985 c->layer[2].interleaving = tvp->u.data;
b6e760f3 1986 break;
287cefd0
EP		 1987
1988 /* Multistream support */
1989 case DTV_STREAM_ID:
1990 case DTV_DVBT2_PLP_ID_LEGACY:
1991 c->stream_id = tvp->u.data;
98293ef3 1992 break;
ca689488
MK		 1993
1994 /* ATSC-MH */
1995 case DTV_ATSCMH_PARADE_ID:
1996 fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
1997 break;
1998 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1999 fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
2000 break;
2001
33eebec5
AP		 2002 case DTV_LNA:
2003 c->lna = tvp->u.data;
2004 if (fe->ops.set_lna)
2005 r = fe->ops.set_lna(fe);
e6876692
MCC		 2006 if (r < 0)
2007 c->lna = LNA_AUTO;
33eebec5
AP		 2008 break;
2009
363429a0 2010 default:
aff8ab5c 2011 return -EINVAL;
6b73eeaf
ST		 2012 }
2013
13c97bf5 2014 return r;
6b73eeaf
ST		 2015}
2016
16ef8def 2017static int dvb_frontend_ioctl(struct file *file,
1da177e4
LT		 2018 unsigned int cmd, void *parg)
2019{
2020 struct dvb_device *dvbdev = file->private_data;
2021 struct dvb_frontend *fe = dvbdev->priv;
50727719 2022 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 2023 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac897586 2024 int err = -EOPNOTSUPP;
1da177e4 2025
36bdbc3f 2026 dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
6ae23224
JL		 2027 if (down_interruptible(&fepriv->sem))
2028 return -ERESTARTSYS;
2029
18ed2860 2030 if (fe->exit != DVB_FE_NO_EXIT) {
6ae23224 2031 up(&fepriv->sem);
1da177e4 2032 return -ENODEV;
6ae23224 2033 }
1da177e4
LT		 2034
2035 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
2036 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
6ae23224
JL		 2037 cmd == FE_DISEQC_RECV_SLAVE_REPLY)) {
2038 up(&fepriv->sem);
1da177e4 2039 return -EPERM;
6ae23224 2040 }
1da177e4 2041
13c97bf5 2042 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
16ef8def 2043 err = dvb_frontend_ioctl_properties(file, cmd, parg);
4dd88bec 2044 else {
50727719 2045 c->state = DTV_UNDEFINED;
16ef8def 2046 err = dvb_frontend_ioctl_legacy(file, cmd, parg);
4dd88bec 2047 }
13c97bf5
ST		 2048
2049 up(&fepriv->sem);
2050 return err;
2051}
2052
16ef8def 2053static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 2054 unsigned int cmd, void *parg)
2055{
2056 struct dvb_device *dvbdev = file->private_data;
2057 struct dvb_frontend *fe = dvbdev->priv;
51dcb19a 2058 struct dvb_frontend_private *fepriv = fe->frontend_priv;
50727719 2059 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
e6f9ec86 2060 int err = 0;
e7fee0f3 2061
71d1b2be 2062 struct dtv_properties *tvps = parg;
e7fee0f3
ST		 2063 struct dtv_property *tvp = NULL;
2064 int i;
13c97bf5 2065
36bdbc3f 2066 dev_dbg(fe->dvb->device, "%s:\n", __func__);
13c97bf5 2067
71d1b2be 2068 if (cmd == FE_SET_PROPERTY) {
36bdbc3f
AP		 2069 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
2070 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 2071
2072 /* Put an arbitrary limit on the number of messages that can
2073 * be sent at once */
6068f506 2074 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 2075 return -EINVAL;
2076
6e3924aa 2077 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
e7fee0f3
ST		 2078 if (!tvp) {
2079 err = -ENOMEM;
2080 goto out;
6b73eeaf
ST		 2081 }
2082
71d1b2be
MCC		 2083 if (copy_from_user(tvp, (void __user *)tvps->props,
2084 tvps->num * sizeof(struct dtv_property))) {
e7fee0f3
ST		 2085 err = -EFAULT;
2086 goto out;
2087 }
2088
d48cb402 2089 for (i = 0; i < tvps->num; i++) {
aff8ab5c
AO		 2090 err = dtv_property_process_set(fe, tvp + i, file);
2091 if (err < 0)
2092 goto out;
2093 (tvp + i)->result = err;
d48cb402 2094 }
e7fee0f3 2095
50727719 2096 if (c->state == DTV_TUNE)
36bdbc3f 2097 dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
bfbf2dae 2098
71d1b2be 2099 } else if (cmd == FE_GET_PROPERTY) {
36bdbc3f
AP		 2100 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
2101 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 2102
2103 /* Put an arbitrary limit on the number of messages that can
2104 * be sent at once */
6068f506 2105 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 2106 return -EINVAL;
2107
6e3924aa 2108 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
363429a0
ST		 2109 if (!tvp) {
2110 err = -ENOMEM;
2111 goto out;
2112 }
2113
71d1b2be
MCC		 2114 if (copy_from_user(tvp, (void __user *)tvps->props,
2115 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2116 err = -EFAULT;
2117 goto out;
2118 }
2119
a689e365
MCC		 2120 /*
2121 * Fills the cache out struct with the cache contents, plus
51dcb19a
MCC		 2122 * the data retrieved from get_frontend, if the frontend
2123 * is not idle. Otherwise, returns the cached content
a689e365 2124 */
51dcb19a
MCC		 2125 if (fepriv->state != FESTATE_IDLE) {
2126 err = dtv_get_frontend(fe, NULL);
2127 if (err < 0)
2128 goto out;
2129 }
d48cb402 2130 for (i = 0; i < tvps->num; i++) {
7c61d80a 2131 err = dtv_property_process_get(fe, c, tvp + i, file);
aff8ab5c
AO		 2132 if (err < 0)
2133 goto out;
2134 (tvp + i)->result = err;
d48cb402 2135 }
363429a0 2136
71d1b2be
MCC		 2137 if (copy_to_user((void __user *)tvps->props, tvp,
2138 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2139 err = -EFAULT;
2140 goto out;
2141 }
2142
363429a0 2143 } else
ac897586 2144 err = -EOPNOTSUPP;
363429a0 2145
e7fee0f3
ST		 2146out:
2147 kfree(tvp);
13c97bf5
ST		 2148 return err;
2149}
2150
5bfaadde 2151static int dtv_set_frontend(struct dvb_frontend *fe)
9682cea2 2152{
9682cea2
MCC		 2153 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2154 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
2155 struct dvb_frontend_tune_settings fetunesettings;
5bfaadde 2156 u32 rolloff = 0;
9682cea2 2157
5bfaadde
MCC		 2158 if (dvb_frontend_check_parameters(fe) < 0)
2159 return -EINVAL;
9682cea2 2160
556a0442
CR		 2161 /*
2162 * Initialize output parameters to match the values given by
2163 * the user. FE_SET_FRONTEND triggers an initial frontend event
2164 * with status = 0, which copies output parameters to userspace.
2165 */
2166 dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
2167
5bfaadde
MCC		 2168 /*
2169 * Be sure that the bandwidth will be filled for all
2170 * non-satellite systems, as tuners need to know what
2171 * low pass/Nyquist half filter should be applied, in
2172 * order to avoid inter-channel noise.
2173 *
2174 * ISDB-T and DVB-T/T2 already sets bandwidth.
2175 * ATSC and DVB-C don't set, so, the core should fill it.
2176 *
2177 * On DVB-C Annex A and C, the bandwidth is a function of
2178 * the roll-off and symbol rate. Annex B defines different
2179 * roll-off factors depending on the modulation. Fortunately,
2180 * Annex B is only used with 6MHz, so there's no need to
2181 * calculate it.
2182 *
2183 * While not officially supported, a side effect of handling it at
2184 * the cache level is that a program could retrieve the bandwidth
2185 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
2186 */
2187 switch (c->delivery_system) {
2188 case SYS_ATSC:
2189 case SYS_DVBC_ANNEX_B:
2190 c->bandwidth_hz = 6000000;
2191 break;
2192 case SYS_DVBC_ANNEX_A:
2193 rolloff = 115;
2194 break;
2195 case SYS_DVBC_ANNEX_C:
2196 rolloff = 113;
2197 break;
c623ed63
MCC		 2198 case SYS_DVBS:
2199 case SYS_TURBO:
8e281faf 2200 case SYS_ISDBS:
c623ed63
MCC		 2201 rolloff = 135;
2202 break;
2203 case SYS_DVBS2:
2204 switch (c->rolloff) {
2205 case ROLLOFF_20:
2206 rolloff = 120;
2207 break;
2208 case ROLLOFF_25:
2209 rolloff = 125;
2210 break;
2211 default:
2212 case ROLLOFF_35:
2213 rolloff = 135;
2214 }
2215 break;
5bfaadde
MCC		 2216 default:
2217 break;
2218 }
2219 if (rolloff)
2a80f296 2220 c->bandwidth_hz = mult_frac(c->symbol_rate, rolloff, 100);
9682cea2
MCC		 2221
2222 /* force auto frequency inversion if requested */
5bfaadde 2223 if (dvb_force_auto_inversion)
9682cea2 2224 c->inversion = INVERSION_AUTO;
5bfaadde
MCC		 2225
2226 /*
2227 * without hierarchical coding code_rate_LP is irrelevant,
2228 * so we tolerate the otherwise invalid FEC_NONE setting
2229 */
2230 if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
2231 c->code_rate_LP = FEC_AUTO;
9682cea2
MCC		 2232
2233 /* get frontend-specific tuning settings */
5bfaadde 2234 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
9682cea2
MCC		 2235 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
2236 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
2237 fepriv->max_drift = fetunesettings.max_drift;
2238 fepriv->step_size = fetunesettings.step_size;
2239 } else {
2240 /* default values */
5bfaadde 2241 switch (c->delivery_system) {
910a5f2e
MCC		 2242 case SYS_DVBS:
2243 case SYS_DVBS2:
2244 case SYS_ISDBS:
2245 case SYS_TURBO:
5bfaadde
MCC		 2246 case SYS_DVBC_ANNEX_A:
2247 case SYS_DVBC_ANNEX_C:
2248 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2249 fepriv->step_size = c->symbol_rate / 16000;
2250 fepriv->max_drift = c->symbol_rate / 2000;
2251 break;
5bfaadde
MCC		 2252 case SYS_DVBT:
2253 case SYS_DVBT2:
2254 case SYS_ISDBT:
224b6642 2255 case SYS_DTMB:
5bfaadde 2256 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2257 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
2258 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
2259 break;
5bfaadde
MCC		 2260 default:
2261 /*
2262 * FIXME: This sounds wrong! if freqency_stepsize is
2263 * defined by the frontend, why not use it???
2264 */
2265 fepriv->min_delay = HZ / 20;
2266 fepriv->step_size = 0; /* no zigzag */
9682cea2
MCC		 2267 fepriv->max_drift = 0;
2268 break;
2269 }
2270 }
2271 if (dvb_override_tune_delay > 0)
2272 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
2273
2274 fepriv->state = FESTATE_RETUNE;
2275
2276 /* Request the search algorithm to search */
2277 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
2278
2279 dvb_frontend_clear_events(fe);
2280 dvb_frontend_add_event(fe, 0);
2281 dvb_frontend_wakeup(fe);
2282 fepriv->status = 0;
2283
2284 return 0;
2285}
2286
2287
16ef8def 2288static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5
ST		 2289 unsigned int cmd, void *parg)
2290{
2291 struct dvb_device *dvbdev = file->private_data;
2292 struct dvb_frontend *fe = dvbdev->priv;
2293 struct dvb_frontend_private *fepriv = fe->frontend_priv;
5bfaadde 2294 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
ac897586 2295 int err = -EOPNOTSUPP;
13c97bf5 2296
1da177e4
LT		 2297 switch (cmd) {
2298 case FE_GET_INFO: {
0c53c70f 2299 struct dvb_frontend_info* info = parg;
9474c5e6 2300
dea74869 2301 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
2030c032 2302 dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4 2303
5bfaadde
MCC		 2304 /*
2305 * Associate the 4 delivery systems supported by DVBv3
2306 * API with their DVBv5 counterpart. For the other standards,
2307 * use the closest type, assuming that it would hopefully
2308 * work with a DVBv3 application.
2309 * It should be noticed that, on multi-frontend devices with
2310 * different types (terrestrial and cable, for example),
2311 * a pure DVBv3 application won't be able to use all delivery
2312 * systems. Yet, changing the DVBv5 cache to the other delivery
2313 * system should be enough for making it work.
2314 */
2315 switch (dvbv3_type(c->delivery_system)) {
2316 case DVBV3_QPSK:
9474c5e6 2317 info->type = FE_QPSK;
5bfaadde
MCC		 2318 break;
2319 case DVBV3_ATSC:
9474c5e6 2320 info->type = FE_ATSC;
5bfaadde
MCC		 2321 break;
2322 case DVBV3_QAM:
9474c5e6 2323 info->type = FE_QAM;
5bfaadde
MCC		 2324 break;
2325 case DVBV3_OFDM:
9474c5e6 2326 info->type = FE_OFDM;
5bfaadde
MCC		 2327 break;
2328 default:
36bdbc3f
AP		 2329 dev_err(fe->dvb->device,
2330 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
2331 __func__, c->delivery_system);
5bfaadde
MCC		 2332 fe->ops.info.type = FE_OFDM;
2333 }
36bdbc3f
AP		 2334 dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
2335 __func__, c->delivery_system, fe->ops.info.type);
5bfaadde 2336
1da177e4
LT		 2337 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
2338 * do it, it is done for it. */
2339 info->caps |= FE_CAN_INVERSION_AUTO;
2340 err = 0;
2341 break;
2342 }
2343
6757ccc5 2344 case FE_READ_STATUS: {
0df289a2 2345 enum fe_status *status = parg;
6757ccc5 2346
25985edc 2347 /* if retune was requested but hasn't occurred yet, prevent
6757ccc5 2348 * that user get signal state from previous tuning */
01886255
JG		 2349 if (fepriv->state == FESTATE_RETUNE ||
2350 fepriv->state == FESTATE_ERROR) {
6757ccc5
PB		 2351 err=0;
2352 *status = 0;
2353 break;
2354 }
2355
dea74869
PB		 2356 if (fe->ops.read_status)
2357 err = fe->ops.read_status(fe, status);
1da177e4 2358 break;
6757ccc5 2359 }
48caa6f1 2360
1da177e4 2361 case FE_READ_BER:
48caa6f1
AP		 2362 if (fe->ops.read_ber) {
2363 if (fepriv->thread)
2364 err = fe->ops.read_ber(fe, (__u32 *) parg);
2365 else
2366 err = -EAGAIN;
2367 }
1da177e4
LT		 2368 break;
2369
2370 case FE_READ_SIGNAL_STRENGTH:
48caa6f1
AP		 2371 if (fe->ops.read_signal_strength) {
2372 if (fepriv->thread)
2373 err = fe->ops.read_signal_strength(fe, (__u16 *) parg);
2374 else
2375 err = -EAGAIN;
2376 }
1da177e4
LT		 2377 break;
2378
2379 case FE_READ_SNR:
48caa6f1
AP		 2380 if (fe->ops.read_snr) {
2381 if (fepriv->thread)
2382 err = fe->ops.read_snr(fe, (__u16 *) parg);
2383 else
2384 err = -EAGAIN;
2385 }
1da177e4
LT		 2386 break;
2387
2388 case FE_READ_UNCORRECTED_BLOCKS:
48caa6f1
AP		 2389 if (fe->ops.read_ucblocks) {
2390 if (fepriv->thread)
2391 err = fe->ops.read_ucblocks(fe, (__u32 *) parg);
2392 else
2393 err = -EAGAIN;
2394 }
1da177e4
LT		 2395 break;
2396
1da177e4 2397 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 2398 if (fe->ops.diseqc_reset_overload) {
2399 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 2400 fepriv->state = FESTATE_DISEQC;
2401 fepriv->status = 0;
2402 }
2403 break;
2404
2405 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 2406 if (fe->ops.diseqc_send_master_cmd) {
2407 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 2408 fepriv->state = FESTATE_DISEQC;
2409 fepriv->status = 0;
2410 }
2411 break;
2412
2413 case FE_DISEQC_SEND_BURST:
dea74869 2414 if (fe->ops.diseqc_send_burst) {
0df289a2
MCC		 2415 err = fe->ops.diseqc_send_burst(fe,
2416 (enum fe_sec_mini_cmd)parg);
1da177e4
LT		 2417 fepriv->state = FESTATE_DISEQC;
2418 fepriv->status = 0;
2419 }
2420 break;
2421
2422 case FE_SET_TONE:
dea74869 2423 if (fe->ops.set_tone) {
0df289a2
MCC		 2424 err = fe->ops.set_tone(fe,
2425 (enum fe_sec_tone_mode)parg);
2426 fepriv->tone = (enum fe_sec_tone_mode)parg;
1da177e4
LT		 2427 fepriv->state = FESTATE_DISEQC;
2428 fepriv->status = 0;
2429 }
2430 break;
2431
2432 case FE_SET_VOLTAGE:
dea74869 2433 if (fe->ops.set_voltage) {
0df289a2
MCC		 2434 err = fe->ops.set_voltage(fe,
2435 (enum fe_sec_voltage)parg);
2436 fepriv->voltage = (enum fe_sec_voltage)parg;
1da177e4
LT		 2437 fepriv->state = FESTATE_DISEQC;
2438 fepriv->status = 0;
2439 }
2440 break;
2441
2442 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869 2443 if (fe->ops.dishnetwork_send_legacy_command) {
0df289a2
MCC		 2444 err = fe->ops.dishnetwork_send_legacy_command(fe,
2445 (unsigned long)parg);
1da177e4
LT		 2446 fepriv->state = FESTATE_DISEQC;
2447 fepriv->status = 0;
dea74869 2448 } else if (fe->ops.set_voltage) {
83b75b04
N		 2449 /*
2450 * NOTE: This is a fallback condition. Some frontends
2451 * (stv0299 for instance) take longer than 8msec to
2452 * respond to a set_voltage command. Those switches
2453 * need custom routines to switch properly. For all
2030c032 2454 * other frontends, the following should work ok.
83b75b04
N		 2455 * Dish network legacy switches (as used by Dish500)
2456 * are controlled by sending 9-bit command words
2457 * spaced 8msec apart.
25985edc 2458 * the actual command word is switch/port dependent
83b75b04
N		 2459 * so it is up to the userspace application to send
2460 * the right command.
2461 * The command must always start with a '0' after
2462 * initialization, so parg is 8 bits and does not
2463 * include the initialization or start bit
2464 */
c6eb8eaf 2465 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 2466 struct timeval nexttime;
2467 struct timeval tv[10];
2468 int i;
2469 u8 last = 1;
2470 if (dvb_frontend_debug)
c6eb8eaf 2471 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 2472 do_gettimeofday(&nexttime);
2473 if (dvb_frontend_debug)
b9b1b3a8 2474 tv[0] = nexttime;
83b75b04
N		 2475 /* before sending a command, initialize by sending
2476 * a 32ms 18V to the switch
2477 */
dea74869 2478 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 2479 dvb_frontend_sleep_until(&nexttime, 32000);
2480
2481 for (i = 0; i < 9; i++) {
2482 if (dvb_frontend_debug)
2483 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 2484 if ((swcmd & 0x01) != last) {
83b75b04 2485 /* set voltage to (last ? 13V : 18V) */
dea74869 2486 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 2487 last = (last) ? 0 : 1;
2488 }
c6eb8eaf 2489 swcmd = swcmd >> 1;
83b75b04
N		 2490 if (i != 8)
2491 dvb_frontend_sleep_until(&nexttime, 8000);
2492 }
2493 if (dvb_frontend_debug) {
2494 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 2495 __func__, fe->dvb->num);
83b75b04
N		 2496 for (i = 1; i < 10; i++)
2497 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
2498 }
2499 err = 0;
2500 fepriv->state = FESTATE_DISEQC;
2501 fepriv->status = 0;
1da177e4
LT		 2502 }
2503 break;
2504
2505 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 2506 if (fe->ops.diseqc_recv_slave_reply)
2507 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 2508 break;
2509
2510 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 2511 if (fe->ops.enable_high_lnb_voltage)
2512 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 2513 break;
2514
9682cea2 2515 case FE_SET_FRONTEND:
be431b16 2516 err = dvbv3_set_delivery_system(fe);
04be0f76
MCC		 2517 if (err)
2518 break;
2519
e399ce77 2520 err = dtv_property_cache_sync(fe, c, parg);
5bfaadde
MCC		 2521 if (err)
2522 break;
2523 err = dtv_set_frontend(fe);
1da177e4 2524 break;
1da177e4
LT		 2525 case FE_GET_EVENT:
2526 err = dvb_frontend_get_event (fe, parg, file->f_flags);
2527 break;
2528
2529 case FE_GET_FRONTEND:
e399ce77 2530 err = dtv_get_frontend(fe, parg);
1da177e4 2531 break;
36cb557a
AQ		 2532
2533 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 2534 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 2535 err = 0;
36cb557a 2536 break;
c2c1b415 2537 }
1da177e4 2538
1da177e4
LT		 2539 return err;
2540}
2541
6b73eeaf 2542
1da177e4
LT		 2543static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
2544{
2545 struct dvb_device *dvbdev = file->private_data;
2546 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2547 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 2548
36bdbc3f 2549 dev_dbg_ratelimited(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 2550
2551 poll_wait (file, &fepriv->events.wait_queue, wait);
2552
2553 if (fepriv->events.eventw != fepriv->events.eventr)
2554 return (POLLIN | POLLRDNORM | POLLPRI);
2555
2556 return 0;
2557}
2558
2559static int dvb_frontend_open(struct inode *inode, struct file *file)
2560{
2561 struct dvb_device *dvbdev = file->private_data;
2562 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2563 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 2564 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 2565 int ret;
2566
36bdbc3f 2567 dev_dbg(fe->dvb->device, "%s:\n", __func__);
18ed2860 2568 if (fe->exit == DVB_FE_DEVICE_REMOVED)
e36309f5 2569 return -ENODEV;
1da177e4 2570
59b1842d
DB		 2571 if (adapter->mfe_shared) {
2572 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 2573
2574 if (adapter->mfe_dvbdev == NULL)
2575 adapter->mfe_dvbdev = dvbdev;
2576
2577 else if (adapter->mfe_dvbdev != dvbdev) {
2578 struct dvb_device
2579 *mfedev = adapter->mfe_dvbdev;
2580 struct dvb_frontend
2581 *mfe = mfedev->priv;
2582 struct dvb_frontend_private
2583 *mfepriv = mfe->frontend_priv;
2584 int mferetry = (dvb_mfe_wait_time << 1);
2585
2586 mutex_unlock (&adapter->mfe_lock);
2587 while (mferetry-- && (mfedev->users != -1 ||
2588 mfepriv->thread != NULL)) {
2589 if(msleep_interruptible(500)) {
2590 if(signal_pending(current))
2591 return -EINTR;
59b1842d 2592 }
6594690b
DB		 2593 }
2594
2595 mutex_lock (&adapter->mfe_lock);
2596 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 2597 mfedev = adapter->mfe_dvbdev;
2598 mfe = mfedev->priv;
2599 mfepriv = mfe->frontend_priv;
6594690b
DB		 2600 if (mfedev->users != -1 ||
2601 mfepriv->thread != NULL) {
2602 mutex_unlock (&adapter->mfe_lock);
2603 return -EBUSY;
59b1842d 2604 }
6594690b 2605 adapter->mfe_dvbdev = dvbdev;
59b1842d 2606 }
59b1842d
DB		 2607 }
2608 }
2609
48136e1e
OE		 2610 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
2611 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 2612 goto err0;
2d196931
DH		 2613
2614 /* If we took control of the bus, we need to force
2615 reinitialization. This is because many ts_bus_ctrl()
2616 functions strobe the RESET pin on the demod, and if the
2617 frontend thread already exists then the dvb_init() routine
2618 won't get called (which is what usually does initial
2619 register configuration). */
2620 fepriv->reinitialise = 1;
ba7e6f3e
ST		 2621 }
2622
48136e1e
OE		 2623 if ((ret = dvb_generic_open (inode, file)) < 0)
2624 goto err1;
04c56d0e 2625
48136e1e 2626 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 2627 /* normal tune mode when opened R/W */
2628 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
2629 fepriv->tone = -1;
2630 fepriv->voltage = -1;
2631
1da177e4
LT		 2632 ret = dvb_frontend_start (fe);
2633 if (ret)
48136e1e 2634 goto err2;
1da177e4
LT		 2635
2636 /* empty event queue */
2637 fepriv->events.eventr = fepriv->events.eventw = 0;
2638 }
2639
59b1842d
DB		 2640 if (adapter->mfe_shared)
2641 mutex_unlock (&adapter->mfe_lock);
1da177e4 2642 return ret;
48136e1e
OE		 2643
2644err2:
2645 dvb_generic_release(inode, file);
2646err1:
2647 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
2648 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 2649err0:
2650 if (adapter->mfe_shared)
2651 mutex_unlock (&adapter->mfe_lock);
48136e1e 2652 return ret;
1da177e4
LT		 2653}
2654
2655static int dvb_frontend_release(struct inode *inode, struct file *file)
2656{
2657 struct dvb_device *dvbdev = file->private_data;
2658 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2659 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 2660 int ret;
1da177e4 2661
36bdbc3f 2662 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2663
b9d5efcc 2664 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1da177e4 2665 fepriv->release_jiffies = jiffies;
b9d5efcc
AO		 2666 mb();
2667 }
1da177e4 2668
ca5be9cd
MR		 2669 ret = dvb_generic_release (inode, file);
2670
48136e1e 2671 if (dvbdev->users == -1) {
b9d5efcc 2672 wake_up(&fepriv->wait_queue);
18ed2860 2673 if (fe->exit != DVB_FE_NO_EXIT)
48136e1e 2674 wake_up(&dvbdev->wait_queue);
48136e1e
OE		 2675 if (fe->ops.ts_bus_ctrl)
2676 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 2677 }
48136e1e 2678
ca5be9cd 2679 return ret;
1da177e4
LT		 2680}
2681
784e29d2 2682static const struct file_operations dvb_frontend_fops = {
1da177e4 2683 .owner = THIS_MODULE,
16ef8def 2684 .unlocked_ioctl = dvb_generic_ioctl,
1da177e4
LT		 2685 .poll = dvb_frontend_poll,
2686 .open = dvb_frontend_open,
6038f373
AB		 2687 .release = dvb_frontend_release,
2688 .llseek = noop_llseek,
1da177e4
LT		 2689};
2690
06bae122
AP		 2691int dvb_frontend_suspend(struct dvb_frontend *fe)
2692{
2693 int ret = 0;
2694
2695 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2696 fe->id);
2697
59d7889a
MCC		 2698 if (fe->ops.tuner_ops.suspend)
2699 ret = fe->ops.tuner_ops.suspend(fe);
2700 else if (fe->ops.tuner_ops.sleep)
06bae122
AP		 2701 ret = fe->ops.tuner_ops.sleep(fe);
2702
2703 if (fe->ops.sleep)
2704 ret = fe->ops.sleep(fe);
2705
2706 return ret;
2707}
2708EXPORT_SYMBOL(dvb_frontend_suspend);
2709
2710int dvb_frontend_resume(struct dvb_frontend *fe)
2711{
2712 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2713 int ret = 0;
2714
2715 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2716 fe->id);
2717
87cd0fa8 2718 fe->exit = DVB_FE_DEVICE_RESUME;
06bae122
AP		 2719 if (fe->ops.init)
2720 ret = fe->ops.init(fe);
2721
59d7889a
MCC		 2722 if (fe->ops.tuner_ops.resume)
2723 ret = fe->ops.tuner_ops.resume(fe);
2724 else if (fe->ops.tuner_ops.init)
06bae122
AP		 2725 ret = fe->ops.tuner_ops.init(fe);
2726
87cd0fa8 2727 fe->exit = DVB_FE_NO_EXIT;
06bae122
AP		 2728 fepriv->state = FESTATE_RETUNE;
2729 dvb_frontend_wakeup(fe);
2730
2731 return ret;
2732}
2733EXPORT_SYMBOL(dvb_frontend_resume);
2734
1da177e4
LT		 2735int dvb_register_frontend(struct dvb_adapter* dvb,
2736 struct dvb_frontend* fe)
2737{
2738 struct dvb_frontend_private *fepriv;
c1b31b1e 2739 const struct dvb_device dvbdev_template = {
1da177e4
LT		 2740 .users = ~0,
2741 .writers = 1,
2742 .readers = (~0)-1,
2743 .fops = &dvb_frontend_fops,
c1b31b1e
MCC		 2744#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
2745 .name = fe->ops.info.name,
2746#endif
1da177e4
LT		 2747 .kernel_ioctl = dvb_frontend_ioctl
2748 };
2749
36bdbc3f 2750 dev_dbg(dvb->device, "%s:\n", __func__);
1da177e4 2751
3593cab5 2752 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 2753 return -ERESTARTSYS;
2754
7408187d 2755 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 2756 if (fe->frontend_priv == NULL) {
3593cab5 2757 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2758 return -ENOMEM;
2759 }
0c53c70f 2760 fepriv = fe->frontend_priv;
1da177e4 2761
a0a4714c 2762 sema_init(&fepriv->sem, 1);
1da177e4
LT		 2763 init_waitqueue_head (&fepriv->wait_queue);
2764 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 2765 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 2766 fe->dvb = dvb;
2767 fepriv->inversion = INVERSION_OFF;
2768
36bdbc3f
AP		 2769 dev_info(fe->dvb->device,
2770 "DVB: registering adapter %i frontend %i (%s)...\n",
2771 fe->dvb->num, fe->id, fe->ops.info.name);
1da177e4
LT		 2772
2773 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
2774 fe, DVB_DEVICE_FRONTEND);
2775
5bfaadde
MCC		 2776 /*
2777 * Initialize the cache to the proper values according with the
2778 * first supported delivery system (ops->delsys[0])
2779 */
240ab508 2780
be431b16 2781 fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
5bfaadde
MCC		 2782 dvb_frontend_clear_cache(fe);
2783
3593cab5 2784 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2785 return 0;
2786}
2787EXPORT_SYMBOL(dvb_register_frontend);
2788
2789int dvb_unregister_frontend(struct dvb_frontend* fe)
2790{
0c53c70f 2791 struct dvb_frontend_private *fepriv = fe->frontend_priv;
36bdbc3f 2792 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2793
57861b43 2794 mutex_lock(&frontend_mutex);
ca5be9cd 2795 dvb_frontend_stop (fe);
57861b43
MR		 2796 mutex_unlock(&frontend_mutex);
2797
2798 if (fepriv->dvbdev->users < -1)
2799 wait_event(fepriv->dvbdev->wait_queue,
2800 fepriv->dvbdev->users==-1);
2801
3593cab5 2802 mutex_lock(&frontend_mutex);
1da177e4 2803 dvb_unregister_device (fepriv->dvbdev);
d9955060 2804
1da177e4
LT		 2805 /* fe is invalid now */
2806 kfree(fepriv);
3593cab5 2807 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2808 return 0;
2809}
2810EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 2811
149ef72d 2812#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 2813void dvb_frontend_detach(struct dvb_frontend* fe)
2814{
2815 void *ptr;
2816
2817 if (fe->ops.release_sec) {
2818 fe->ops.release_sec(fe);
4647f487 2819 dvb_detach(fe->ops.release_sec);
f52a838b
AQ		 2820 }
2821 if (fe->ops.tuner_ops.release) {
2822 fe->ops.tuner_ops.release(fe);
4647f487 2823 dvb_detach(fe->ops.tuner_ops.release);
f52a838b 2824 }
2426a27e
MK		 2825 if (fe->ops.analog_ops.release) {
2826 fe->ops.analog_ops.release(fe);
4647f487 2827 dvb_detach(fe->ops.analog_ops.release);
2426a27e 2828 }
f52a838b
AQ		 2829 ptr = (void*)fe->ops.release;
2830 if (ptr) {
2831 fe->ops.release(fe);
4647f487 2832 dvb_detach(ptr);
f52a838b
AQ		 2833 }
2834}
2835#else
2836void dvb_frontend_detach(struct dvb_frontend* fe)
2837{
2838 if (fe->ops.release_sec)
2839 fe->ops.release_sec(fe);
2840 if (fe->ops.tuner_ops.release)
2841 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 2842 if (fe->ops.analog_ops.release)
2843 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 2844 if (fe->ops.release)
2845 fe->ops.release(fe);
2846}
2847#endif
2848EXPORT_SYMBOL(dvb_frontend_detach);
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