]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blame - drivers/media/dvb-core/dvb_frontend.c
projects / mirror_ubuntu-artful-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[media] s5c73m3: Export OF module alias information
[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>
9056a23b 43#include <linux/ktime.h>
1da177e4 44#include <asm/processor.h>
1da177e4
LT		 45
46#include "dvb_frontend.h"
47#include "dvbdev.h"
eacf8d8d 48#include <linux/dvb/version.h>
1da177e4
LT		 49
50static int dvb_frontend_debug;
849be2cd 51static int dvb_shutdown_timeout;
1da177e4
LT		 52static int dvb_force_auto_inversion;
53static int dvb_override_tune_delay;
54static int dvb_powerdown_on_sleep = 1;
59b1842d 55static int dvb_mfe_wait_time = 5;
1da177e4
LT		 56
57module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 58MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 59module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 60MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 61module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 62MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 63module_param(dvb_override_tune_delay, int, 0644);
1da177e4 64MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 65module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 66MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 67module_param(dvb_mfe_wait_time, int, 0644);
68MODULE_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 69
1da177e4
LT		 70#define FESTATE_IDLE 1
71#define FESTATE_RETUNE 2
72#define FESTATE_TUNING_FAST 4
73#define FESTATE_TUNING_SLOW 8
74#define FESTATE_TUNED 16
75#define FESTATE_ZIGZAG_FAST 32
76#define FESTATE_ZIGZAG_SLOW 64
77#define FESTATE_DISEQC 128
01886255 78#define FESTATE_ERROR 256
1da177e4
LT		 79#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
80#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
81#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
82#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16 83
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 893/*
4deea4cb
MCC		 894 * Sleep for the amount of time given by add_usec parameter
895 *
896 * This needs to be as precise as possible, as it affects the detection of
897 * the dish tone command at the satellite subsystem. The precision is improved
898 * by using a scheduled msleep followed by udelay for the remainder.
83b75b04 899 */
9056a23b 900void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec)
83b75b04 901{
83b75b04
N		 902 s32 delta, newdelta;
903
9056a23b
TR		 904 ktime_add_us(*waketime, add_usec);
905 delta = ktime_us_delta(ktime_get_real(), *waketime);
83b75b04
N		 906 if (delta > 2500) {
907 msleep((delta - 1500) / 1000);
9056a23b 908 newdelta = ktime_us_delta(ktime_get_real(), *waketime);
83b75b04
N		 909 delta = (newdelta > delta) ? 0 : newdelta;
910 }
911 if (delta > 0)
912 udelay(delta);
913}
914EXPORT_SYMBOL(dvb_frontend_sleep_until);
915
1da177e4
LT		 916static int dvb_frontend_start(struct dvb_frontend *fe)
917{
918 int ret;
0c53c70f 919 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 920 struct task_struct *fe_thread;
1da177e4 921
36bdbc3f 922 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 923
8eec1429 924 if (fepriv->thread) {
18ed2860 925 if (fe->exit == DVB_FE_NO_EXIT)
1da177e4
LT		 926 return 0;
927 else
928 dvb_frontend_stop (fe);
929 }
930
931 if (signal_pending(current))
932 return -EINTR;
933 if (down_interruptible (&fepriv->sem))
934 return -EINTR;
935
936 fepriv->state = FESTATE_IDLE;
18ed2860 937 fe->exit = DVB_FE_NO_EXIT;
8eec1429 938 fepriv->thread = NULL;
1da177e4
LT		 939 mb();
940
8eec1429 941 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 942 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 943 if (IS_ERR(fe_thread)) {
944 ret = PTR_ERR(fe_thread);
36bdbc3f
AP		 945 dev_warn(fe->dvb->device,
946 "dvb_frontend_start: failed to start kthread (%d)\n",
947 ret);
1da177e4
LT		 948 up(&fepriv->sem);
949 return ret;
950 }
8eec1429 951 fepriv->thread = fe_thread;
1da177e4
LT		 952 return 0;
953}
954
2030c032 955static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
c471b331
OE		 956 u32 *freq_min, u32 *freq_max)
957{
958 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
959
960 if (fe->ops.info.frequency_max == 0)
961 *freq_max = fe->ops.tuner_ops.info.frequency_max;
962 else if (fe->ops.tuner_ops.info.frequency_max == 0)
963 *freq_max = fe->ops.info.frequency_max;
964 else
965 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
966
967 if (*freq_min == 0 || *freq_max == 0)
36bdbc3f
AP		 968 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
969 fe->dvb->num, fe->id);
c471b331
OE		 970}
971
5bfaadde 972static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
1fab46f0 973{
5bfaadde 974 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c471b331
OE		 975 u32 freq_min;
976 u32 freq_max;
977
1fab46f0 978 /* range check: frequency */
2030c032 979 dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
5bfaadde
MCC		 980 if ((freq_min && c->frequency < freq_min) ||
981 (freq_max && c->frequency > freq_max)) {
36bdbc3f
AP		 982 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
983 fe->dvb->num, fe->id, c->frequency,
984 freq_min, freq_max);
1fab46f0
OE		 985 return -EINVAL;
986 }
987
988 /* range check: symbol rate */
5bfaadde
MCC		 989 switch (c->delivery_system) {
990 case SYS_DVBS:
991 case SYS_DVBS2:
992 case SYS_TURBO:
993 case SYS_DVBC_ANNEX_A:
994 case SYS_DVBC_ANNEX_C:
1fab46f0 995 if ((fe->ops.info.symbol_rate_min &&
5bfaadde 996 c->symbol_rate < fe->ops.info.symbol_rate_min) ||
1fab46f0 997 (fe->ops.info.symbol_rate_max &&
5bfaadde 998 c->symbol_rate > fe->ops.info.symbol_rate_max)) {
36bdbc3f
AP		 999 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
1000 fe->dvb->num, fe->id, c->symbol_rate,
1001 fe->ops.info.symbol_rate_min,
1002 fe->ops.info.symbol_rate_max);
1fab46f0
OE		 1003 return -EINVAL;
1004 }
5bfaadde
MCC		 1005 default:
1006 break;
1fab46f0
OE		 1007 }
1008
1009 return 0;
1010}
1011
b6e760f3
PB		 1012static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
1013{
50727719 1014 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
b6e760f3 1015 int i;
149709f5 1016 u32 delsys;
b6e760f3 1017
149709f5 1018 delsys = c->delivery_system;
808d24d6 1019 memset(c, 0, offsetof(struct dtv_frontend_properties, strength));
149709f5 1020 c->delivery_system = delsys;
50727719
AO		 1021
1022 c->state = DTV_CLEAR;
26c924fe 1023
36bdbc3f
AP		 1024 dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n",
1025 __func__, c->delivery_system);
26c924fe 1026
50727719 1027 c->transmission_mode = TRANSMISSION_MODE_AUTO;
26c924fe 1028 c->bandwidth_hz = 0; /* AUTO */
50727719
AO		 1029 c->guard_interval = GUARD_INTERVAL_AUTO;
1030 c->hierarchy = HIERARCHY_AUTO;
26c924fe 1031 c->symbol_rate = 0;
50727719
AO		 1032 c->code_rate_HP = FEC_AUTO;
1033 c->code_rate_LP = FEC_AUTO;
26c924fe 1034 c->fec_inner = FEC_AUTO;
39ce61a8 1035 c->rolloff = ROLLOFF_AUTO;
26c924fe 1036 c->voltage = SEC_VOLTAGE_OFF;
26c924fe
MCC		 1037 c->sectone = SEC_TONE_OFF;
1038 c->pilot = PILOT_AUTO;
50727719 1039
a520ca97
MCC		 1040 c->isdbt_partial_reception = 0;
1041 c->isdbt_sb_mode = 0;
1042 c->isdbt_sb_subchannel = 0;
1043 c->isdbt_sb_segment_idx = 0;
1044 c->isdbt_sb_segment_count = 0;
1045 c->isdbt_layer_enabled = 0;
b6e760f3 1046 for (i = 0; i < 3; i++) {
50727719
AO		 1047 c->layer[i].fec = FEC_AUTO;
1048 c->layer[i].modulation = QAM_AUTO;
a520ca97
MCC		 1049 c->layer[i].interleaving = 0;
1050 c->layer[i].segment_count = 0;
b6e760f3
PB		 1051 }
1052
287cefd0 1053 c->stream_id = NO_STREAM_ID_FILTER;
26c924fe 1054
5bfaadde
MCC		 1055 switch (c->delivery_system) {
1056 case SYS_DVBS:
1057 case SYS_DVBS2:
1058 case SYS_TURBO:
1059 c->modulation = QPSK; /* implied for DVB-S in legacy API */
1060 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
1061 break;
1062 case SYS_ATSC:
1063 c->modulation = VSB_8;
1064 break;
8e281faf
AT		 1065 case SYS_ISDBS:
1066 c->symbol_rate = 28860000;
1067 c->rolloff = ROLLOFF_35;
1068 c->bandwidth_hz = c->symbol_rate / 100 * 135;
1069 break;
5bfaadde
MCC		 1070 default:
1071 c->modulation = QAM_AUTO;
1072 break;
1073 }
1074
33eebec5
AP		 1075 c->lna = LNA_AUTO;
1076
b6e760f3
PB		 1077 return 0;
1078}
1079
1080#define _DTV_CMD(n, s, b) \
1081[n] = { \
1082 .name = #n, \
1083 .cmd = n, \
1084 .set = s,\
1085 .buffer = b \
1086}
1087
ec05a642 1088static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
06d3a396
MCC		 1089 _DTV_CMD(DTV_TUNE, 1, 0),
1090 _DTV_CMD(DTV_CLEAR, 1, 0),
6b73eeaf
ST		 1091
1092 /* Set */
06d3a396
MCC		 1093 _DTV_CMD(DTV_FREQUENCY, 1, 0),
1094 _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
1095 _DTV_CMD(DTV_MODULATION, 1, 0),
1096 _DTV_CMD(DTV_INVERSION, 1, 0),
1097 _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
1098 _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
1099 _DTV_CMD(DTV_INNER_FEC, 1, 0),
1100 _DTV_CMD(DTV_VOLTAGE, 1, 0),
1101 _DTV_CMD(DTV_TONE, 1, 0),
1102 _DTV_CMD(DTV_PILOT, 1, 0),
1103 _DTV_CMD(DTV_ROLLOFF, 1, 0),
1104 _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
1105 _DTV_CMD(DTV_HIERARCHY, 1, 0),
1106 _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
1107 _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
1108 _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
1109 _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
224b6642 1110 _DTV_CMD(DTV_INTERLEAVING, 1, 0),
b6e760f3
PB		 1111
1112 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
1113 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
1114 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
1115 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
1116 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
e7b7949a 1117 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
b6e760f3
PB		 1118 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
1119 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
1120 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
1121 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
1122 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
1123 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
1124 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
1125 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
1126 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
1127 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
1128 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
1129 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
1130
287cefd0
EP		 1131 _DTV_CMD(DTV_STREAM_ID, 1, 0),
1132 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
8a2697ab 1133 _DTV_CMD(DTV_LNA, 1, 0),
98293ef3 1134
6b73eeaf 1135 /* Get */
06d3a396
MCC		 1136 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
1137 _DTV_CMD(DTV_API_VERSION, 0, 0),
ba2780c7
MA		 1138
1139 _DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
ca689488
MK		 1140
1141 _DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
1142 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
1143
1144 _DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
ca689488
MK		 1145 _DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
1146 _DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
1147 _DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
1148 _DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
1149 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
ca689488
MK		 1150 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
1151 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
1152 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
1153 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
1154 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
1155 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
1156 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
7cd4ece5
MCC		 1157
1158 /* Statistics API */
1159 _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH, 0, 0),
1160 _DTV_CMD(DTV_STAT_CNR, 0, 0),
1161 _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0, 0),
1162 _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0, 0),
1163 _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0, 0),
1164 _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0, 0),
1165 _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT, 0, 0),
1166 _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
6b73eeaf
ST		 1167};
1168
36bdbc3f 1169static void dtv_property_dump(struct dvb_frontend *fe, struct dtv_property *tvp)
6b73eeaf
ST		 1170{
1171 int i;
1172
106ff9e0 1173 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
36bdbc3f
AP		 1174 dev_warn(fe->dvb->device, "%s: tvp.cmd = 0x%08x undefined\n",
1175 __func__, tvp->cmd);
4aae8efb
DB		 1176 return;
1177 }
1178
36bdbc3f
AP		 1179 dev_dbg(fe->dvb->device, "%s: tvp.cmd = 0x%08x (%s)\n", __func__,
1180 tvp->cmd, dtv_cmds[tvp->cmd].name);
6b73eeaf 1181
36bdbc3f
AP		 1182 if (dtv_cmds[tvp->cmd].buffer) {
1183 dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
1184 __func__, tvp->u.buffer.len);
6b73eeaf
ST		 1185
1186 for(i = 0; i < tvp->u.buffer.len; i++)
36bdbc3f
AP		 1187 dev_dbg(fe->dvb->device,
1188 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1189 __func__, i, tvp->u.buffer.data[i]);
1190 } else {
1191 dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__,
1192 tvp->u.data);
1193 }
6b73eeaf
ST		 1194}
1195
ee33c525
ST		 1196/* Synchronise the legacy tuning parameters into the cache, so that demodulator
1197 * drivers can use a single set_frontend tuning function, regardless of whether
1198 * it's being used for the legacy or new API, reducing code and complexity.
1199 */
5bfaadde
MCC		 1200static int dtv_property_cache_sync(struct dvb_frontend *fe,
1201 struct dtv_frontend_properties *c,
1202 const struct dvb_frontend_parameters *p)
ee33c525 1203{
ee33c525
ST		 1204 c->frequency = p->frequency;
1205 c->inversion = p->inversion;
1206
5bfaadde
MCC		 1207 switch (dvbv3_type(c->delivery_system)) {
1208 case DVBV3_QPSK:
36bdbc3f 1209 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
ee33c525
ST		 1210 c->symbol_rate = p->u.qpsk.symbol_rate;
1211 c->fec_inner = p->u.qpsk.fec_inner;
1212 break;
5bfaadde 1213 case DVBV3_QAM:
36bdbc3f 1214 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
ee33c525
ST		 1215 c->symbol_rate = p->u.qam.symbol_rate;
1216 c->fec_inner = p->u.qam.fec_inner;
1217 c->modulation = p->u.qam.modulation;
1218 break;
5bfaadde 1219 case DVBV3_OFDM:
36bdbc3f
AP		 1220 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
1221
9a27e6a0
MCC		 1222 switch (p->u.ofdm.bandwidth) {
1223 case BANDWIDTH_10_MHZ:
1224 c->bandwidth_hz = 10000000;
1225 break;
1226 case BANDWIDTH_8_MHZ:
75b7f943 1227 c->bandwidth_hz = 8000000;
9a27e6a0
MCC		 1228 break;
1229 case BANDWIDTH_7_MHZ:
1230 c->bandwidth_hz = 7000000;
1231 break;
1232 case BANDWIDTH_6_MHZ:
1233 c->bandwidth_hz = 6000000;
1234 break;
1235 case BANDWIDTH_5_MHZ:
1236 c->bandwidth_hz = 5000000;
1237 break;
1238 case BANDWIDTH_1_712_MHZ:
1239 c->bandwidth_hz = 1712000;
1240 break;
1241 case BANDWIDTH_AUTO:
75b7f943 1242 c->bandwidth_hz = 0;
9a27e6a0
MCC		 1243 }
1244
ee33c525
ST		 1245 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1246 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1247 c->modulation = p->u.ofdm.constellation;
1248 c->transmission_mode = p->u.ofdm.transmission_mode;
1249 c->guard_interval = p->u.ofdm.guard_interval;
1250 c->hierarchy = p->u.ofdm.hierarchy_information;
1251 break;
5bfaadde 1252 case DVBV3_ATSC:
36bdbc3f 1253 dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__);
ee33c525 1254 c->modulation = p->u.vsb.modulation;
ca689488
MK		 1255 if (c->delivery_system == SYS_ATSCMH)
1256 break;
80a773c9
ST		 1257 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1258 c->delivery_system = SYS_ATSC;
1259 else
1260 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525 1261 break;
5bfaadde 1262 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1263 dev_err(fe->dvb->device,
1264 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1265 __func__, c->delivery_system);
5bfaadde 1266 return -EINVAL;
ee33c525 1267 }
5bfaadde
MCC		 1268
1269 return 0;
ee33c525
ST		 1270}
1271
d5748f10
ST		 1272/* Ensure the cached values are set correctly in the frontend
1273 * legacy tuning structures, for the advanced tuning API.
1274 */
5bfaadde 1275static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
a689e365 1276 struct dvb_frontend_parameters *p)
6b73eeaf 1277{
15cc2bb3 1278 const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1279
d5748f10
ST		 1280 p->frequency = c->frequency;
1281 p->inversion = c->inversion;
6b73eeaf 1282
5bfaadde
MCC		 1283 switch (dvbv3_type(c->delivery_system)) {
1284 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1285 dev_err(fe->dvb->device,
1286 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1287 __func__, c->delivery_system);
5bfaadde
MCC		 1288 return -EINVAL;
1289 case DVBV3_QPSK:
36bdbc3f 1290 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
d5748f10
ST		 1291 p->u.qpsk.symbol_rate = c->symbol_rate;
1292 p->u.qpsk.fec_inner = c->fec_inner;
1293 break;
5bfaadde 1294 case DVBV3_QAM:
36bdbc3f 1295 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
d5748f10
ST		 1296 p->u.qam.symbol_rate = c->symbol_rate;
1297 p->u.qam.fec_inner = c->fec_inner;
1298 p->u.qam.modulation = c->modulation;
1299 break;
5bfaadde 1300 case DVBV3_OFDM:
36bdbc3f 1301 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
9a27e6a0
MCC		 1302 switch (c->bandwidth_hz) {
1303 case 10000000:
1304 p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
1305 break;
1306 case 8000000:
75b7f943 1307 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
9a27e6a0
MCC		 1308 break;
1309 case 7000000:
1310 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1311 break;
1312 case 6000000:
1313 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1314 break;
1315 case 5000000:
1316 p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
1317 break;
1318 case 1712000:
1319 p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
1320 break;
1321 case 0:
1322 default:
75b7f943 1323 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
9a27e6a0 1324 }
d5748f10
ST		 1325 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1326 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1327 p->u.ofdm.constellation = c->modulation;
1328 p->u.ofdm.transmission_mode = c->transmission_mode;
1329 p->u.ofdm.guard_interval = c->guard_interval;
1330 p->u.ofdm.hierarchy_information = c->hierarchy;
1331 break;
5bfaadde 1332 case DVBV3_ATSC:
36bdbc3f 1333 dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__);
d5748f10
ST		 1334 p->u.vsb.modulation = c->modulation;
1335 break;
1336 }
5bfaadde 1337 return 0;
6b73eeaf
ST		 1338}
1339
a689e365
MCC		 1340/**
1341 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1342 * @fe: struct dvb_frontend pointer
1343 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1344 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1345 *
1346 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1347 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1348 * If p_out is not null, it will update the DVBv3 params pointed by it.
1349 */
1350static int dtv_get_frontend(struct dvb_frontend *fe,
a689e365
MCC		 1351 struct dvb_frontend_parameters *p_out)
1352{
a689e365
MCC		 1353 int r;
1354
a689e365 1355 if (fe->ops.get_frontend) {
7c61d80a 1356 r = fe->ops.get_frontend(fe);
a689e365
MCC		 1357 if (unlikely(r < 0))
1358 return r;
7c61d80a 1359 if (p_out)
a689e365
MCC		 1360 dtv_property_legacy_params_sync(fe, p_out);
1361 return 0;
1362 }
1363
7c61d80a 1364 /* As everything is in cache, get_frontend fops are always supported */
b1e9a650 1365 return 0;
a689e365
MCC		 1366}
1367
16ef8def 1368static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5 1369 unsigned int cmd, void *parg);
16ef8def 1370static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1371 unsigned int cmd, void *parg);
1372
072ce0c5 1373static int dtv_property_process_get(struct dvb_frontend *fe,
a689e365 1374 const struct dtv_frontend_properties *c,
072ce0c5 1375 struct dtv_property *tvp,
16ef8def 1376 struct file *file)
363429a0 1377{
5bfaadde 1378 int r, ncaps;
bfbf2dae 1379
363429a0 1380 switch(tvp->cmd) {
ba2780c7 1381 case DTV_ENUM_DELSYS:
5bfaadde 1382 ncaps = 0;
0123f29c 1383 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
5bfaadde
MCC		 1384 tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
1385 ncaps++;
1386 }
1387 tvp->u.buffer.len = ncaps;
ba2780c7 1388 break;
363429a0 1389 case DTV_FREQUENCY:
50727719 1390 tvp->u.data = c->frequency;
363429a0
ST		 1391 break;
1392 case DTV_MODULATION:
50727719 1393 tvp->u.data = c->modulation;
363429a0 1394 break;
75b7f943 1395 case DTV_BANDWIDTH_HZ:
50727719 1396 tvp->u.data = c->bandwidth_hz;
363429a0
ST		 1397 break;
1398 case DTV_INVERSION:
50727719 1399 tvp->u.data = c->inversion;
363429a0
ST		 1400 break;
1401 case DTV_SYMBOL_RATE:
50727719 1402 tvp->u.data = c->symbol_rate;
363429a0
ST		 1403 break;
1404 case DTV_INNER_FEC:
50727719 1405 tvp->u.data = c->fec_inner;
363429a0
ST		 1406 break;
1407 case DTV_PILOT:
50727719 1408 tvp->u.data = c->pilot;
363429a0
ST		 1409 break;
1410 case DTV_ROLLOFF:
50727719 1411 tvp->u.data = c->rolloff;
363429a0
ST		 1412 break;
1413 case DTV_DELIVERY_SYSTEM:
50727719 1414 tvp->u.data = c->delivery_system;
363429a0 1415 break;
363429a0 1416 case DTV_VOLTAGE:
50727719 1417 tvp->u.data = c->voltage;
363429a0
ST		 1418 break;
1419 case DTV_TONE:
50727719 1420 tvp->u.data = c->sectone;
363429a0 1421 break;
eacf8d8d
ST		 1422 case DTV_API_VERSION:
1423 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1424 break;
a4de91be 1425 case DTV_CODE_RATE_HP:
50727719 1426 tvp->u.data = c->code_rate_HP;
a4de91be
ST		 1427 break;
1428 case DTV_CODE_RATE_LP:
50727719 1429 tvp->u.data = c->code_rate_LP;
a4de91be 1430 break;
b87625f0 1431 case DTV_GUARD_INTERVAL:
50727719 1432 tvp->u.data = c->guard_interval;
b87625f0
ST		 1433 break;
1434 case DTV_TRANSMISSION_MODE:
50727719 1435 tvp->u.data = c->transmission_mode;
b87625f0 1436 break;
ef526f42 1437 case DTV_HIERARCHY:
50727719 1438 tvp->u.data = c->hierarchy;
ef526f42 1439 break;
224b6642
AP		 1440 case DTV_INTERLEAVING:
1441 tvp->u.data = c->interleaving;
1442 break;
b6e760f3
PB		 1443
1444 /* ISDB-T Support here */
1445 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1446 tvp->u.data = c->isdbt_partial_reception;
b6e760f3
PB		 1447 break;
1448 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1449 tvp->u.data = c->isdbt_sb_mode;
b6e760f3
PB		 1450 break;
1451 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1452 tvp->u.data = c->isdbt_sb_subchannel;
b6e760f3
PB		 1453 break;
1454 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1455 tvp->u.data = c->isdbt_sb_segment_idx;
b6e760f3
PB		 1456 break;
1457 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1458 tvp->u.data = c->isdbt_sb_segment_count;
b6e760f3 1459 break;
e7b7949a 1460 case DTV_ISDBT_LAYER_ENABLED:
50727719 1461 tvp->u.data = c->isdbt_layer_enabled;
e7b7949a 1462 break;
b6e760f3 1463 case DTV_ISDBT_LAYERA_FEC:
50727719 1464 tvp->u.data = c->layer[0].fec;
b6e760f3
PB		 1465 break;
1466 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1467 tvp->u.data = c->layer[0].modulation;
b6e760f3
PB		 1468 break;
1469 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1470 tvp->u.data = c->layer[0].segment_count;
b6e760f3
PB		 1471 break;
1472 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1473 tvp->u.data = c->layer[0].interleaving;
b6e760f3
PB		 1474 break;
1475 case DTV_ISDBT_LAYERB_FEC:
50727719 1476 tvp->u.data = c->layer[1].fec;
b6e760f3
PB		 1477 break;
1478 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1479 tvp->u.data = c->layer[1].modulation;
b6e760f3
PB		 1480 break;
1481 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1482 tvp->u.data = c->layer[1].segment_count;
b6e760f3
PB		 1483 break;
1484 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1485 tvp->u.data = c->layer[1].interleaving;
b6e760f3
PB		 1486 break;
1487 case DTV_ISDBT_LAYERC_FEC:
50727719 1488 tvp->u.data = c->layer[2].fec;
b6e760f3
PB		 1489 break;
1490 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1491 tvp->u.data = c->layer[2].modulation;
b6e760f3
PB		 1492 break;
1493 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1494 tvp->u.data = c->layer[2].segment_count;
b6e760f3
PB		 1495 break;
1496 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1497 tvp->u.data = c->layer[2].interleaving;
b6e760f3 1498 break;
287cefd0
EP		 1499
1500 /* Multistream support */
1501 case DTV_STREAM_ID:
1502 case DTV_DVBT2_PLP_ID_LEGACY:
1503 tvp->u.data = c->stream_id;
94d56ffa 1504 break;
ca689488
MK		 1505
1506 /* ATSC-MH */
1507 case DTV_ATSCMH_FIC_VER:
1508 tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
1509 break;
1510 case DTV_ATSCMH_PARADE_ID:
1511 tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
1512 break;
1513 case DTV_ATSCMH_NOG:
1514 tvp->u.data = fe->dtv_property_cache.atscmh_nog;
1515 break;
1516 case DTV_ATSCMH_TNOG:
1517 tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
1518 break;
1519 case DTV_ATSCMH_SGN:
1520 tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
1521 break;
1522 case DTV_ATSCMH_PRC:
1523 tvp->u.data = fe->dtv_property_cache.atscmh_prc;
1524 break;
1525 case DTV_ATSCMH_RS_FRAME_MODE:
1526 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
1527 break;
1528 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1529 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
1530 break;
1531 case DTV_ATSCMH_RS_CODE_MODE_PRI:
1532 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
1533 break;
1534 case DTV_ATSCMH_RS_CODE_MODE_SEC:
1535 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
1536 break;
1537 case DTV_ATSCMH_SCCC_BLOCK_MODE:
1538 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
1539 break;
1540 case DTV_ATSCMH_SCCC_CODE_MODE_A:
1541 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
1542 break;
1543 case DTV_ATSCMH_SCCC_CODE_MODE_B:
1544 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
1545 break;
1546 case DTV_ATSCMH_SCCC_CODE_MODE_C:
1547 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
1548 break;
1549 case DTV_ATSCMH_SCCC_CODE_MODE_D:
1550 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
1551 break;
ca689488 1552
33eebec5
AP		 1553 case DTV_LNA:
1554 tvp->u.data = c->lna;
1555 break;
1556
7cd4ece5
MCC		 1557 /* Fill quality measures */
1558 case DTV_STAT_SIGNAL_STRENGTH:
1559 tvp->u.st = c->strength;
1560 break;
1561 case DTV_STAT_CNR:
1562 tvp->u.st = c->cnr;
1563 break;
1564 case DTV_STAT_PRE_ERROR_BIT_COUNT:
1565 tvp->u.st = c->pre_bit_error;
1566 break;
1567 case DTV_STAT_PRE_TOTAL_BIT_COUNT:
1568 tvp->u.st = c->pre_bit_count;
1569 break;
1570 case DTV_STAT_POST_ERROR_BIT_COUNT:
1571 tvp->u.st = c->post_bit_error;
1572 break;
1573 case DTV_STAT_POST_TOTAL_BIT_COUNT:
1574 tvp->u.st = c->post_bit_count;
1575 break;
1576 case DTV_STAT_ERROR_BLOCK_COUNT:
1577 tvp->u.st = c->block_error;
1578 break;
1579 case DTV_STAT_TOTAL_BLOCK_COUNT:
1580 tvp->u.st = c->block_count;
1581 break;
363429a0 1582 default:
94a93e5f
MCC		 1583 dev_dbg(fe->dvb->device,
1584 "%s: FE property %d doesn't exist\n",
1585 __func__, tvp->cmd);
aff8ab5c 1586 return -EINVAL;
363429a0
ST		 1587 }
1588
e23d9ae3
AO		 1589 /* Allow the frontend to override outgoing properties */
1590 if (fe->ops.get_property) {
1591 r = fe->ops.get_property(fe, tvp);
1592 if (r < 0)
1593 return r;
1594 }
1595
36bdbc3f 1596 dtv_property_dump(fe, tvp);
639544d7 1597
aff8ab5c 1598 return 0;
363429a0
ST		 1599}
1600
5bfaadde
MCC		 1601static int dtv_set_frontend(struct dvb_frontend *fe);
1602
04be0f76
MCC		 1603static bool is_dvbv3_delsys(u32 delsys)
1604{
1605 bool status;
1606
1607 status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
1608 (delsys == SYS_DVBS) || (delsys == SYS_ATSC);
1609
1610 return status;
1611}
1612
52dee392
MCC		 1613/**
1614 * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
1615 * @fe: struct frontend;
1616 * @delsys: DVBv5 type that will be used for emulation
1617 *
1618 * Provides emulation for delivery systems that are compatible with the old
1619 * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
1620 * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
1621 * parameters are compatible with DVB-S spec.
1622 */
1623static int emulate_delivery_system(struct dvb_frontend *fe, u32 delsys)
04be0f76 1624{
be431b16 1625 int i;
04be0f76 1626 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
04be0f76 1627
3626479e
MCC		 1628 c->delivery_system = delsys;
1629
04be0f76 1630 /*
52dee392 1631 * If the call is for ISDB-T, put it into full-seg, auto mode, TV
04be0f76 1632 */
52dee392
MCC		 1633 if (c->delivery_system == SYS_ISDBT) {
1634 dev_dbg(fe->dvb->device,
1635 "%s: Using defaults for SYS_ISDBT\n",
1636 __func__);
04be0f76 1637
52dee392
MCC		 1638 if (!c->bandwidth_hz)
1639 c->bandwidth_hz = 6000000;
1640
1641 c->isdbt_partial_reception = 0;
1642 c->isdbt_sb_mode = 0;
1643 c->isdbt_sb_subchannel = 0;
1644 c->isdbt_sb_segment_idx = 0;
1645 c->isdbt_sb_segment_count = 0;
1646 c->isdbt_layer_enabled = 7;
1647 for (i = 0; i < 3; i++) {
1648 c->layer[i].fec = FEC_AUTO;
1649 c->layer[i].modulation = QAM_AUTO;
1650 c->layer[i].interleaving = 0;
1651 c->layer[i].segment_count = 0;
04be0f76
MCC		 1652 }
1653 }
36bdbc3f 1654 dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n",
52dee392 1655 __func__, c->delivery_system);
9474c5e6 1656
04be0f76
MCC		 1657 return 0;
1658}
1659
52dee392
MCC		 1660/**
1661 * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
1662 * @fe: frontend struct
1663 * @desired_system: delivery system requested by the user
1664 *
1665 * A DVBv5 call know what's the desired system it wants. So, set it.
1666 *
1667 * There are, however, a few known issues with early DVBv5 applications that
1668 * are also handled by this logic:
1669 *
1670 * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
1671 * This is an API violation, but, as we don't want to break userspace,
1672 * convert it to the first supported delivery system.
1673 * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
1674 * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
1675 * ISDB-T provided backward compat with DVB-T.
1676 */
be431b16
MCC		 1677static int dvbv5_set_delivery_system(struct dvb_frontend *fe,
1678 u32 desired_system)
1679{
1680 int ncaps;
1681 u32 delsys = SYS_UNDEFINED;
1682 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1683 enum dvbv3_emulation_type type;
1684
1685 /*
1686 * It was reported that some old DVBv5 applications were
1687 * filling delivery_system with SYS_UNDEFINED. If this happens,
1688 * assume that the application wants to use the first supported
1689 * delivery system.
1690 */
52dee392
MCC		 1691 if (desired_system == SYS_UNDEFINED)
1692 desired_system = fe->ops.delsys[0];
be431b16
MCC		 1693
1694 /*
52dee392
MCC		 1695 * This is a DVBv5 call. So, it likely knows the supported
1696 * delivery systems. So, check if the desired delivery system is
1697 * supported
1698 */
be431b16 1699 ncaps = 0;
0123f29c 1700 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
be431b16
MCC		 1701 if (fe->ops.delsys[ncaps] == desired_system) {
1702 c->delivery_system = desired_system;
1703 dev_dbg(fe->dvb->device,
1704 "%s: Changing delivery system to %d\n",
1705 __func__, desired_system);
1706 return 0;
1707 }
1708 ncaps++;
1709 }
1710
1711 /*
52dee392
MCC		 1712 * The requested delivery system isn't supported. Maybe userspace
1713 * is requesting a DVBv3 compatible delivery system.
1714 *
1715 * The emulation only works if the desired system is one of the
1716 * delivery systems supported by DVBv3 API
be431b16 1717 */
be431b16
MCC		 1718 if (!is_dvbv3_delsys(desired_system)) {
1719 dev_dbg(fe->dvb->device,
52dee392
MCC		 1720 "%s: Delivery system %d not supported.\n",
1721 __func__, desired_system);
be431b16
MCC		 1722 return -EINVAL;
1723 }
1724
52dee392
MCC		 1725 type = dvbv3_type(desired_system);
1726
be431b16
MCC		 1727 /*
1728 * Get the last non-DVBv3 delivery system that has the same type
1729 * of the desired system
1730 */
1731 ncaps = 0;
0123f29c 1732 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392 1733 if (dvbv3_type(fe->ops.delsys[ncaps]) == type)
be431b16
MCC		 1734 delsys = fe->ops.delsys[ncaps];
1735 ncaps++;
1736 }
52dee392 1737
be431b16
MCC		 1738 /* There's nothing compatible with the desired delivery system */
1739 if (delsys == SYS_UNDEFINED) {
1740 dev_dbg(fe->dvb->device,
52dee392
MCC		 1741 "%s: Delivery system %d not supported on emulation mode.\n",
1742 __func__, desired_system);
be431b16
MCC		 1743 return -EINVAL;
1744 }
1745
52dee392
MCC		 1746 dev_dbg(fe->dvb->device,
1747 "%s: Using delivery system %d emulated as if it were %d\n",
1748 __func__, delsys, desired_system);
1749
1750 return emulate_delivery_system(fe, desired_system);
be431b16
MCC		 1751}
1752
52dee392
MCC		 1753/**
1754 * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
1755 * @fe: frontend struct
1756 *
1757 * A DVBv3 call doesn't know what's the desired system it wants. It also
1758 * doesn't allow to switch between different types. Due to that, userspace
1759 * should use DVBv5 instead.
1760 * However, in order to avoid breaking userspace API, limited backward
1761 * compatibility support is provided.
1762 *
1763 * There are some delivery systems that are incompatible with DVBv3 calls.
1764 *
1765 * This routine should work fine for frontends that support just one delivery
1766 * system.
1767 *
1768 * For frontends that support multiple frontends:
1769 * 1) It defaults to use the first supported delivery system. There's an
1770 * userspace application that allows changing it at runtime;
1771 *
1772 * 2) If the current delivery system is not compatible with DVBv3, it gets
1773 * the first one that it is compatible.
1774 *
1775 * NOTE: in order for this to work with applications like Kaffeine that
1776 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1777 * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
1778 * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
1779 * to DVB-S.
1780 */
be431b16
MCC		 1781static int dvbv3_set_delivery_system(struct dvb_frontend *fe)
1782{
1783 int ncaps;
be431b16
MCC		 1784 u32 delsys = SYS_UNDEFINED;
1785 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
be431b16
MCC		 1786
1787 /* If not set yet, defaults to the first supported delivery system */
1788 if (c->delivery_system == SYS_UNDEFINED)
1789 c->delivery_system = fe->ops.delsys[0];
1790
be431b16
MCC		 1791 /*
1792 * Trivial case: just use the current one, if it already a DVBv3
1793 * delivery system
1794 */
1795 if (is_dvbv3_delsys(c->delivery_system)) {
1796 dev_dbg(fe->dvb->device,
1797 "%s: Using delivery system to %d\n",
1798 __func__, c->delivery_system);
1799 return 0;
1800 }
1801
be431b16 1802 /*
52dee392
MCC		 1803 * Seek for the first delivery system that it is compatible with a
1804 * DVBv3 standard
be431b16
MCC		 1805 */
1806 ncaps = 0;
0123f29c 1807 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392
MCC		 1808 if (dvbv3_type(fe->ops.delsys[ncaps]) != DVBV3_UNKNOWN) {
1809 delsys = fe->ops.delsys[ncaps];
be431b16
MCC		 1810 break;
1811 }
1812 ncaps++;
1813 }
1814 if (delsys == SYS_UNDEFINED) {
52dee392
MCC		 1815 dev_dbg(fe->dvb->device,
1816 "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
1817 __func__);
1818 return -EINVAL;
be431b16 1819 }
52dee392 1820 return emulate_delivery_system(fe, delsys);
be431b16
MCC		 1821}
1822
072ce0c5
MCC		 1823static int dtv_property_process_set(struct dvb_frontend *fe,
1824 struct dtv_property *tvp,
072ce0c5 1825 struct file *file)
6b73eeaf
ST		 1826{
1827 int r = 0;
50727719 1828 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1829
bfbf2dae 1830 /* Allow the frontend to validate incoming properties */
aff8ab5c 1831 if (fe->ops.set_property) {
bfbf2dae 1832 r = fe->ops.set_property(fe, tvp);
aff8ab5c
AO		 1833 if (r < 0)
1834 return r;
1835 }
bfbf2dae 1836
6b73eeaf 1837 switch(tvp->cmd) {
e7fee0f3 1838 case DTV_CLEAR:
5bfaadde
MCC		 1839 /*
1840 * Reset a cache of data specific to the frontend here. This does
6b73eeaf
ST		 1841 * not effect hardware.
1842 */
b6e760f3 1843 dvb_frontend_clear_cache(fe);
6b73eeaf 1844 break;
e7fee0f3 1845 case DTV_TUNE:
6b73eeaf 1846 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1847 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1848 * ioctl.
6b73eeaf 1849 */
50727719 1850 c->state = tvp->cmd;
36bdbc3f
AP		 1851 dev_dbg(fe->dvb->device, "%s: Finalised property cache\n",
1852 __func__);
d5748f10 1853
5bfaadde 1854 r = dtv_set_frontend(fe);
6b73eeaf 1855 break;
363429a0 1856 case DTV_FREQUENCY:
50727719 1857 c->frequency = tvp->u.data;
6b73eeaf 1858 break;
363429a0 1859 case DTV_MODULATION:
50727719 1860 c->modulation = tvp->u.data;
6b73eeaf 1861 break;
75b7f943 1862 case DTV_BANDWIDTH_HZ:
50727719 1863 c->bandwidth_hz = tvp->u.data;
6b73eeaf 1864 break;
363429a0 1865 case DTV_INVERSION:
50727719 1866 c->inversion = tvp->u.data;
6b73eeaf 1867 break;
363429a0 1868 case DTV_SYMBOL_RATE:
50727719 1869 c->symbol_rate = tvp->u.data;
6b73eeaf 1870 break;
363429a0 1871 case DTV_INNER_FEC:
50727719 1872 c->fec_inner = tvp->u.data;
6b73eeaf 1873 break;
363429a0 1874 case DTV_PILOT:
50727719 1875 c->pilot = tvp->u.data;
6b73eeaf 1876 break;
363429a0 1877 case DTV_ROLLOFF:
50727719 1878 c->rolloff = tvp->u.data;
6b73eeaf 1879 break;
363429a0 1880 case DTV_DELIVERY_SYSTEM:
be431b16 1881 r = dvbv5_set_delivery_system(fe, tvp->u.data);
6b73eeaf 1882 break;
363429a0 1883 case DTV_VOLTAGE:
50727719 1884 c->voltage = tvp->u.data;
16ef8def 1885 r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
50727719 1886 (void *)c->voltage);
13c97bf5 1887 break;
363429a0 1888 case DTV_TONE:
50727719 1889 c->sectone = tvp->u.data;
16ef8def 1890 r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
50727719 1891 (void *)c->sectone);
13c97bf5 1892 break;
a4de91be 1893 case DTV_CODE_RATE_HP:
50727719 1894 c->code_rate_HP = tvp->u.data;
a4de91be
ST		 1895 break;
1896 case DTV_CODE_RATE_LP:
50727719 1897 c->code_rate_LP = tvp->u.data;
a4de91be 1898 break;
b87625f0 1899 case DTV_GUARD_INTERVAL:
50727719 1900 c->guard_interval = tvp->u.data;
b87625f0
ST		 1901 break;
1902 case DTV_TRANSMISSION_MODE:
50727719 1903 c->transmission_mode = tvp->u.data;
b87625f0 1904 break;
ef526f42 1905 case DTV_HIERARCHY:
50727719 1906 c->hierarchy = tvp->u.data;
ef526f42 1907 break;
224b6642
AP		 1908 case DTV_INTERLEAVING:
1909 c->interleaving = tvp->u.data;
1910 break;
b6e760f3
PB		 1911
1912 /* ISDB-T Support here */
1913 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1914 c->isdbt_partial_reception = tvp->u.data;
b6e760f3
PB		 1915 break;
1916 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1917 c->isdbt_sb_mode = tvp->u.data;
b6e760f3
PB		 1918 break;
1919 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1920 c->isdbt_sb_subchannel = tvp->u.data;
b6e760f3
PB		 1921 break;
1922 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1923 c->isdbt_sb_segment_idx = tvp->u.data;
b6e760f3
PB		 1924 break;
1925 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1926 c->isdbt_sb_segment_count = tvp->u.data;
b6e760f3 1927 break;
e7b7949a 1928 case DTV_ISDBT_LAYER_ENABLED:
50727719 1929 c->isdbt_layer_enabled = tvp->u.data;
e7b7949a 1930 break;
b6e760f3 1931 case DTV_ISDBT_LAYERA_FEC:
50727719 1932 c->layer[0].fec = tvp->u.data;
b6e760f3
PB		 1933 break;
1934 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1935 c->layer[0].modulation = tvp->u.data;
b6e760f3
PB		 1936 break;
1937 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1938 c->layer[0].segment_count = tvp->u.data;
b6e760f3
PB		 1939 break;
1940 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1941 c->layer[0].interleaving = tvp->u.data;
b6e760f3
PB		 1942 break;
1943 case DTV_ISDBT_LAYERB_FEC:
50727719 1944 c->layer[1].fec = tvp->u.data;
b6e760f3
PB		 1945 break;
1946 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1947 c->layer[1].modulation = tvp->u.data;
b6e760f3
PB		 1948 break;
1949 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1950 c->layer[1].segment_count = tvp->u.data;
b6e760f3
PB		 1951 break;
1952 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1953 c->layer[1].interleaving = tvp->u.data;
b6e760f3
PB		 1954 break;
1955 case DTV_ISDBT_LAYERC_FEC:
50727719 1956 c->layer[2].fec = tvp->u.data;
b6e760f3
PB		 1957 break;
1958 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1959 c->layer[2].modulation = tvp->u.data;
b6e760f3
PB		 1960 break;
1961 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1962 c->layer[2].segment_count = tvp->u.data;
b6e760f3
PB		 1963 break;
1964 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1965 c->layer[2].interleaving = tvp->u.data;
b6e760f3 1966 break;
287cefd0
EP		 1967
1968 /* Multistream support */
1969 case DTV_STREAM_ID:
1970 case DTV_DVBT2_PLP_ID_LEGACY:
1971 c->stream_id = tvp->u.data;
98293ef3 1972 break;
ca689488
MK		 1973
1974 /* ATSC-MH */
1975 case DTV_ATSCMH_PARADE_ID:
1976 fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
1977 break;
1978 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1979 fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
1980 break;
1981
33eebec5
AP		 1982 case DTV_LNA:
1983 c->lna = tvp->u.data;
1984 if (fe->ops.set_lna)
1985 r = fe->ops.set_lna(fe);
e6876692
MCC		 1986 if (r < 0)
1987 c->lna = LNA_AUTO;
33eebec5
AP		 1988 break;
1989
363429a0 1990 default:
aff8ab5c 1991 return -EINVAL;
6b73eeaf
ST		 1992 }
1993
13c97bf5 1994 return r;
6b73eeaf
ST		 1995}
1996
16ef8def 1997static int dvb_frontend_ioctl(struct file *file,
1da177e4
LT		 1998 unsigned int cmd, void *parg)
1999{
2000 struct dvb_device *dvbdev = file->private_data;
2001 struct dvb_frontend *fe = dvbdev->priv;
50727719 2002 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 2003 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac897586 2004 int err = -EOPNOTSUPP;
1da177e4 2005
36bdbc3f 2006 dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
6ae23224
JL		 2007 if (down_interruptible(&fepriv->sem))
2008 return -ERESTARTSYS;
2009
18ed2860 2010 if (fe->exit != DVB_FE_NO_EXIT) {
6ae23224 2011 up(&fepriv->sem);
1da177e4 2012 return -ENODEV;
6ae23224 2013 }
1da177e4
LT		 2014
2015 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
2016 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
6ae23224
JL		 2017 cmd == FE_DISEQC_RECV_SLAVE_REPLY)) {
2018 up(&fepriv->sem);
1da177e4 2019 return -EPERM;
6ae23224 2020 }
1da177e4 2021
13c97bf5 2022 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
16ef8def 2023 err = dvb_frontend_ioctl_properties(file, cmd, parg);
4dd88bec 2024 else {
50727719 2025 c->state = DTV_UNDEFINED;
16ef8def 2026 err = dvb_frontend_ioctl_legacy(file, cmd, parg);
4dd88bec 2027 }
13c97bf5
ST		 2028
2029 up(&fepriv->sem);
2030 return err;
2031}
2032
16ef8def 2033static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 2034 unsigned int cmd, void *parg)
2035{
2036 struct dvb_device *dvbdev = file->private_data;
2037 struct dvb_frontend *fe = dvbdev->priv;
51dcb19a 2038 struct dvb_frontend_private *fepriv = fe->frontend_priv;
50727719 2039 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
e6f9ec86 2040 int err = 0;
e7fee0f3 2041
71d1b2be 2042 struct dtv_properties *tvps = parg;
e7fee0f3
ST		 2043 struct dtv_property *tvp = NULL;
2044 int i;
13c97bf5 2045
36bdbc3f 2046 dev_dbg(fe->dvb->device, "%s:\n", __func__);
13c97bf5 2047
71d1b2be 2048 if (cmd == FE_SET_PROPERTY) {
36bdbc3f
AP		 2049 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
2050 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 2051
2052 /* Put an arbitrary limit on the number of messages that can
2053 * be sent at once */
6068f506 2054 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 2055 return -EINVAL;
2056
6e3924aa 2057 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
e7fee0f3
ST		 2058 if (!tvp) {
2059 err = -ENOMEM;
2060 goto out;
6b73eeaf
ST		 2061 }
2062
71d1b2be
MCC		 2063 if (copy_from_user(tvp, (void __user *)tvps->props,
2064 tvps->num * sizeof(struct dtv_property))) {
e7fee0f3
ST		 2065 err = -EFAULT;
2066 goto out;
2067 }
2068
d48cb402 2069 for (i = 0; i < tvps->num; i++) {
aff8ab5c
AO		 2070 err = dtv_property_process_set(fe, tvp + i, file);
2071 if (err < 0)
2072 goto out;
2073 (tvp + i)->result = err;
d48cb402 2074 }
e7fee0f3 2075
50727719 2076 if (c->state == DTV_TUNE)
36bdbc3f 2077 dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
bfbf2dae 2078
71d1b2be 2079 } else if (cmd == FE_GET_PROPERTY) {
36bdbc3f
AP		 2080 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
2081 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 2082
2083 /* Put an arbitrary limit on the number of messages that can
2084 * be sent at once */
6068f506 2085 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 2086 return -EINVAL;
2087
6e3924aa 2088 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
363429a0
ST		 2089 if (!tvp) {
2090 err = -ENOMEM;
2091 goto out;
2092 }
2093
71d1b2be
MCC		 2094 if (copy_from_user(tvp, (void __user *)tvps->props,
2095 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2096 err = -EFAULT;
2097 goto out;
2098 }
2099
a689e365
MCC		 2100 /*
2101 * Fills the cache out struct with the cache contents, plus
51dcb19a
MCC		 2102 * the data retrieved from get_frontend, if the frontend
2103 * is not idle. Otherwise, returns the cached content
a689e365 2104 */
51dcb19a
MCC		 2105 if (fepriv->state != FESTATE_IDLE) {
2106 err = dtv_get_frontend(fe, NULL);
2107 if (err < 0)
2108 goto out;
2109 }
d48cb402 2110 for (i = 0; i < tvps->num; i++) {
7c61d80a 2111 err = dtv_property_process_get(fe, c, tvp + i, file);
aff8ab5c
AO		 2112 if (err < 0)
2113 goto out;
2114 (tvp + i)->result = err;
d48cb402 2115 }
363429a0 2116
71d1b2be
MCC		 2117 if (copy_to_user((void __user *)tvps->props, tvp,
2118 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2119 err = -EFAULT;
2120 goto out;
2121 }
2122
363429a0 2123 } else
ac897586 2124 err = -EOPNOTSUPP;
363429a0 2125
e7fee0f3
ST		 2126out:
2127 kfree(tvp);
13c97bf5
ST		 2128 return err;
2129}
2130
5bfaadde 2131static int dtv_set_frontend(struct dvb_frontend *fe)
9682cea2 2132{
9682cea2
MCC		 2133 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2134 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
2135 struct dvb_frontend_tune_settings fetunesettings;
5bfaadde 2136 u32 rolloff = 0;
9682cea2 2137
5bfaadde
MCC		 2138 if (dvb_frontend_check_parameters(fe) < 0)
2139 return -EINVAL;
9682cea2 2140
556a0442
CR		 2141 /*
2142 * Initialize output parameters to match the values given by
2143 * the user. FE_SET_FRONTEND triggers an initial frontend event
2144 * with status = 0, which copies output parameters to userspace.
2145 */
2146 dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
2147
5bfaadde
MCC		 2148 /*
2149 * Be sure that the bandwidth will be filled for all
2150 * non-satellite systems, as tuners need to know what
2151 * low pass/Nyquist half filter should be applied, in
2152 * order to avoid inter-channel noise.
2153 *
2154 * ISDB-T and DVB-T/T2 already sets bandwidth.
2155 * ATSC and DVB-C don't set, so, the core should fill it.
2156 *
2157 * On DVB-C Annex A and C, the bandwidth is a function of
2158 * the roll-off and symbol rate. Annex B defines different
2159 * roll-off factors depending on the modulation. Fortunately,
2160 * Annex B is only used with 6MHz, so there's no need to
2161 * calculate it.
2162 *
2163 * While not officially supported, a side effect of handling it at
2164 * the cache level is that a program could retrieve the bandwidth
2165 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
2166 */
2167 switch (c->delivery_system) {
2168 case SYS_ATSC:
2169 case SYS_DVBC_ANNEX_B:
2170 c->bandwidth_hz = 6000000;
2171 break;
2172 case SYS_DVBC_ANNEX_A:
2173 rolloff = 115;
2174 break;
2175 case SYS_DVBC_ANNEX_C:
2176 rolloff = 113;
2177 break;
c623ed63
MCC		 2178 case SYS_DVBS:
2179 case SYS_TURBO:
8e281faf 2180 case SYS_ISDBS:
c623ed63
MCC		 2181 rolloff = 135;
2182 break;
2183 case SYS_DVBS2:
2184 switch (c->rolloff) {
2185 case ROLLOFF_20:
2186 rolloff = 120;
2187 break;
2188 case ROLLOFF_25:
2189 rolloff = 125;
2190 break;
2191 default:
2192 case ROLLOFF_35:
2193 rolloff = 135;
2194 }
2195 break;
5bfaadde
MCC		 2196 default:
2197 break;
2198 }
2199 if (rolloff)
2a80f296 2200 c->bandwidth_hz = mult_frac(c->symbol_rate, rolloff, 100);
9682cea2
MCC		 2201
2202 /* force auto frequency inversion if requested */
5bfaadde 2203 if (dvb_force_auto_inversion)
9682cea2 2204 c->inversion = INVERSION_AUTO;
5bfaadde
MCC		 2205
2206 /*
2207 * without hierarchical coding code_rate_LP is irrelevant,
2208 * so we tolerate the otherwise invalid FEC_NONE setting
2209 */
2210 if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
2211 c->code_rate_LP = FEC_AUTO;
9682cea2
MCC		 2212
2213 /* get frontend-specific tuning settings */
5bfaadde 2214 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
9682cea2
MCC		 2215 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
2216 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
2217 fepriv->max_drift = fetunesettings.max_drift;
2218 fepriv->step_size = fetunesettings.step_size;
2219 } else {
2220 /* default values */
5bfaadde 2221 switch (c->delivery_system) {
910a5f2e
MCC		 2222 case SYS_DVBS:
2223 case SYS_DVBS2:
2224 case SYS_ISDBS:
2225 case SYS_TURBO:
5bfaadde
MCC		 2226 case SYS_DVBC_ANNEX_A:
2227 case SYS_DVBC_ANNEX_C:
2228 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2229 fepriv->step_size = c->symbol_rate / 16000;
2230 fepriv->max_drift = c->symbol_rate / 2000;
2231 break;
5bfaadde
MCC		 2232 case SYS_DVBT:
2233 case SYS_DVBT2:
2234 case SYS_ISDBT:
224b6642 2235 case SYS_DTMB:
5bfaadde 2236 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2237 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
2238 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
2239 break;
5bfaadde
MCC		 2240 default:
2241 /*
2242 * FIXME: This sounds wrong! if freqency_stepsize is
2243 * defined by the frontend, why not use it???
2244 */
2245 fepriv->min_delay = HZ / 20;
2246 fepriv->step_size = 0; /* no zigzag */
9682cea2
MCC		 2247 fepriv->max_drift = 0;
2248 break;
2249 }
2250 }
2251 if (dvb_override_tune_delay > 0)
2252 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
2253
2254 fepriv->state = FESTATE_RETUNE;
2255
2256 /* Request the search algorithm to search */
2257 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
2258
2259 dvb_frontend_clear_events(fe);
2260 dvb_frontend_add_event(fe, 0);
2261 dvb_frontend_wakeup(fe);
2262 fepriv->status = 0;
2263
2264 return 0;
2265}
2266
2267
16ef8def 2268static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5
ST		 2269 unsigned int cmd, void *parg)
2270{
2271 struct dvb_device *dvbdev = file->private_data;
2272 struct dvb_frontend *fe = dvbdev->priv;
2273 struct dvb_frontend_private *fepriv = fe->frontend_priv;
5bfaadde 2274 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
ac897586 2275 int err = -EOPNOTSUPP;
13c97bf5 2276
1da177e4
LT		 2277 switch (cmd) {
2278 case FE_GET_INFO: {
0c53c70f 2279 struct dvb_frontend_info* info = parg;
9474c5e6 2280
dea74869 2281 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
2030c032 2282 dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4 2283
5bfaadde
MCC		 2284 /*
2285 * Associate the 4 delivery systems supported by DVBv3
2286 * API with their DVBv5 counterpart. For the other standards,
2287 * use the closest type, assuming that it would hopefully
2288 * work with a DVBv3 application.
2289 * It should be noticed that, on multi-frontend devices with
2290 * different types (terrestrial and cable, for example),
2291 * a pure DVBv3 application won't be able to use all delivery
2292 * systems. Yet, changing the DVBv5 cache to the other delivery
2293 * system should be enough for making it work.
2294 */
2295 switch (dvbv3_type(c->delivery_system)) {
2296 case DVBV3_QPSK:
9474c5e6 2297 info->type = FE_QPSK;
5bfaadde
MCC		 2298 break;
2299 case DVBV3_ATSC:
9474c5e6 2300 info->type = FE_ATSC;
5bfaadde
MCC		 2301 break;
2302 case DVBV3_QAM:
9474c5e6 2303 info->type = FE_QAM;
5bfaadde
MCC		 2304 break;
2305 case DVBV3_OFDM:
9474c5e6 2306 info->type = FE_OFDM;
5bfaadde
MCC		 2307 break;
2308 default:
36bdbc3f
AP		 2309 dev_err(fe->dvb->device,
2310 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
2311 __func__, c->delivery_system);
5bfaadde
MCC		 2312 fe->ops.info.type = FE_OFDM;
2313 }
36bdbc3f
AP		 2314 dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
2315 __func__, c->delivery_system, fe->ops.info.type);
5bfaadde 2316
1da177e4
LT		 2317 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
2318 * do it, it is done for it. */
2319 info->caps |= FE_CAN_INVERSION_AUTO;
2320 err = 0;
2321 break;
2322 }
2323
6757ccc5 2324 case FE_READ_STATUS: {
0df289a2 2325 enum fe_status *status = parg;
6757ccc5 2326
25985edc 2327 /* if retune was requested but hasn't occurred yet, prevent
6757ccc5 2328 * that user get signal state from previous tuning */
01886255
JG		 2329 if (fepriv->state == FESTATE_RETUNE ||
2330 fepriv->state == FESTATE_ERROR) {
6757ccc5
PB		 2331 err=0;
2332 *status = 0;
2333 break;
2334 }
2335
dea74869
PB		 2336 if (fe->ops.read_status)
2337 err = fe->ops.read_status(fe, status);
1da177e4 2338 break;
6757ccc5 2339 }
48caa6f1 2340
1da177e4 2341 case FE_READ_BER:
48caa6f1
AP		 2342 if (fe->ops.read_ber) {
2343 if (fepriv->thread)
2344 err = fe->ops.read_ber(fe, (__u32 *) parg);
2345 else
2346 err = -EAGAIN;
2347 }
1da177e4
LT		 2348 break;
2349
2350 case FE_READ_SIGNAL_STRENGTH:
48caa6f1
AP		 2351 if (fe->ops.read_signal_strength) {
2352 if (fepriv->thread)
2353 err = fe->ops.read_signal_strength(fe, (__u16 *) parg);
2354 else
2355 err = -EAGAIN;
2356 }
1da177e4
LT		 2357 break;
2358
2359 case FE_READ_SNR:
48caa6f1
AP		 2360 if (fe->ops.read_snr) {
2361 if (fepriv->thread)
2362 err = fe->ops.read_snr(fe, (__u16 *) parg);
2363 else
2364 err = -EAGAIN;
2365 }
1da177e4
LT		 2366 break;
2367
2368 case FE_READ_UNCORRECTED_BLOCKS:
48caa6f1
AP		 2369 if (fe->ops.read_ucblocks) {
2370 if (fepriv->thread)
2371 err = fe->ops.read_ucblocks(fe, (__u32 *) parg);
2372 else
2373 err = -EAGAIN;
2374 }
1da177e4
LT		 2375 break;
2376
1da177e4 2377 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 2378 if (fe->ops.diseqc_reset_overload) {
2379 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 2380 fepriv->state = FESTATE_DISEQC;
2381 fepriv->status = 0;
2382 }
2383 break;
2384
2385 case FE_DISEQC_SEND_MASTER_CMD:
dea74869 2386 if (fe->ops.diseqc_send_master_cmd) {
8d7e5063
DC		 2387 struct dvb_diseqc_master_cmd *cmd = parg;
2388
2389 if (cmd->msg_len > sizeof(cmd->msg)) {
2390 err = -EINVAL;
2391 break;
2392 }
2393 err = fe->ops.diseqc_send_master_cmd(fe, cmd);
1da177e4
LT		 2394 fepriv->state = FESTATE_DISEQC;
2395 fepriv->status = 0;
2396 }
2397 break;
2398
2399 case FE_DISEQC_SEND_BURST:
dea74869 2400 if (fe->ops.diseqc_send_burst) {
0df289a2
MCC		 2401 err = fe->ops.diseqc_send_burst(fe,
2402 (enum fe_sec_mini_cmd)parg);
1da177e4
LT		 2403 fepriv->state = FESTATE_DISEQC;
2404 fepriv->status = 0;
2405 }
2406 break;
2407
2408 case FE_SET_TONE:
dea74869 2409 if (fe->ops.set_tone) {
0df289a2
MCC		 2410 err = fe->ops.set_tone(fe,
2411 (enum fe_sec_tone_mode)parg);
2412 fepriv->tone = (enum fe_sec_tone_mode)parg;
1da177e4
LT		 2413 fepriv->state = FESTATE_DISEQC;
2414 fepriv->status = 0;
2415 }
2416 break;
2417
2418 case FE_SET_VOLTAGE:
dea74869 2419 if (fe->ops.set_voltage) {
0df289a2
MCC		 2420 err = fe->ops.set_voltage(fe,
2421 (enum fe_sec_voltage)parg);
2422 fepriv->voltage = (enum fe_sec_voltage)parg;
1da177e4
LT		 2423 fepriv->state = FESTATE_DISEQC;
2424 fepriv->status = 0;
2425 }
2426 break;
2427
2428 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869 2429 if (fe->ops.dishnetwork_send_legacy_command) {
0df289a2
MCC		 2430 err = fe->ops.dishnetwork_send_legacy_command(fe,
2431 (unsigned long)parg);
1da177e4
LT		 2432 fepriv->state = FESTATE_DISEQC;
2433 fepriv->status = 0;
dea74869 2434 } else if (fe->ops.set_voltage) {
83b75b04
N		 2435 /*
2436 * NOTE: This is a fallback condition. Some frontends
2437 * (stv0299 for instance) take longer than 8msec to
2438 * respond to a set_voltage command. Those switches
2439 * need custom routines to switch properly. For all
2030c032 2440 * other frontends, the following should work ok.
83b75b04
N		 2441 * Dish network legacy switches (as used by Dish500)
2442 * are controlled by sending 9-bit command words
2443 * spaced 8msec apart.
25985edc 2444 * the actual command word is switch/port dependent
83b75b04
N		 2445 * so it is up to the userspace application to send
2446 * the right command.
2447 * The command must always start with a '0' after
2448 * initialization, so parg is 8 bits and does not
2449 * include the initialization or start bit
2450 */
c6eb8eaf 2451 unsigned long swcmd = ((unsigned long) parg) << 1;
9056a23b
TR		 2452 ktime_t nexttime;
2453 ktime_t tv[10];
83b75b04
N		 2454 int i;
2455 u8 last = 1;
2456 if (dvb_frontend_debug)
c6eb8eaf 2457 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
9056a23b 2458 nexttime = ktime_get_real();
83b75b04 2459 if (dvb_frontend_debug)
b9b1b3a8 2460 tv[0] = nexttime;
83b75b04
N		 2461 /* before sending a command, initialize by sending
2462 * a 32ms 18V to the switch
2463 */
dea74869 2464 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 2465 dvb_frontend_sleep_until(&nexttime, 32000);
2466
2467 for (i = 0; i < 9; i++) {
2468 if (dvb_frontend_debug)
9056a23b 2469 tv[i+1] = ktime_get_real();
c6eb8eaf 2470 if ((swcmd & 0x01) != last) {
83b75b04 2471 /* set voltage to (last ? 13V : 18V) */
dea74869 2472 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 2473 last = (last) ? 0 : 1;
2474 }
c6eb8eaf 2475 swcmd = swcmd >> 1;
83b75b04
N		 2476 if (i != 8)
2477 dvb_frontend_sleep_until(&nexttime, 8000);
2478 }
2479 if (dvb_frontend_debug) {
2480 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 2481 __func__, fe->dvb->num);
83b75b04 2482 for (i = 1; i < 10; i++)
9056a23b
TR		 2483 printk("%d: %d\n", i,
2484 (int) ktime_us_delta(tv[i], tv[i-1]));
83b75b04
N		 2485 }
2486 err = 0;
2487 fepriv->state = FESTATE_DISEQC;
2488 fepriv->status = 0;
1da177e4
LT		 2489 }
2490 break;
2491
2492 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 2493 if (fe->ops.diseqc_recv_slave_reply)
2494 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 2495 break;
2496
2497 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 2498 if (fe->ops.enable_high_lnb_voltage)
2499 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 2500 break;
2501
9682cea2 2502 case FE_SET_FRONTEND:
be431b16 2503 err = dvbv3_set_delivery_system(fe);
04be0f76
MCC		 2504 if (err)
2505 break;
2506
e399ce77 2507 err = dtv_property_cache_sync(fe, c, parg);
5bfaadde
MCC		 2508 if (err)
2509 break;
2510 err = dtv_set_frontend(fe);
1da177e4 2511 break;
1da177e4
LT		 2512 case FE_GET_EVENT:
2513 err = dvb_frontend_get_event (fe, parg, file->f_flags);
2514 break;
2515
2516 case FE_GET_FRONTEND:
e399ce77 2517 err = dtv_get_frontend(fe, parg);
1da177e4 2518 break;
36cb557a
AQ		 2519
2520 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 2521 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 2522 err = 0;
36cb557a 2523 break;
c2c1b415 2524 }
1da177e4 2525
1da177e4
LT		 2526 return err;
2527}
2528
6b73eeaf 2529
1da177e4
LT		 2530static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
2531{
2532 struct dvb_device *dvbdev = file->private_data;
2533 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2534 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 2535
36bdbc3f 2536 dev_dbg_ratelimited(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 2537
2538 poll_wait (file, &fepriv->events.wait_queue, wait);
2539
2540 if (fepriv->events.eventw != fepriv->events.eventr)
2541 return (POLLIN | POLLRDNORM | POLLPRI);
2542
2543 return 0;
2544}
2545
2546static int dvb_frontend_open(struct inode *inode, struct file *file)
2547{
2548 struct dvb_device *dvbdev = file->private_data;
2549 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2550 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 2551 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 2552 int ret;
2553
36bdbc3f 2554 dev_dbg(fe->dvb->device, "%s:\n", __func__);
18ed2860 2555 if (fe->exit == DVB_FE_DEVICE_REMOVED)
e36309f5 2556 return -ENODEV;
1da177e4 2557
59b1842d
DB		 2558 if (adapter->mfe_shared) {
2559 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 2560
2561 if (adapter->mfe_dvbdev == NULL)
2562 adapter->mfe_dvbdev = dvbdev;
2563
2564 else if (adapter->mfe_dvbdev != dvbdev) {
2565 struct dvb_device
2566 *mfedev = adapter->mfe_dvbdev;
2567 struct dvb_frontend
2568 *mfe = mfedev->priv;
2569 struct dvb_frontend_private
2570 *mfepriv = mfe->frontend_priv;
2571 int mferetry = (dvb_mfe_wait_time << 1);
2572
2573 mutex_unlock (&adapter->mfe_lock);
2574 while (mferetry-- && (mfedev->users != -1 ||
2575 mfepriv->thread != NULL)) {
2576 if(msleep_interruptible(500)) {
2577 if(signal_pending(current))
2578 return -EINTR;
59b1842d 2579 }
6594690b
DB		 2580 }
2581
2582 mutex_lock (&adapter->mfe_lock);
2583 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 2584 mfedev = adapter->mfe_dvbdev;
2585 mfe = mfedev->priv;
2586 mfepriv = mfe->frontend_priv;
6594690b
DB		 2587 if (mfedev->users != -1 ||
2588 mfepriv->thread != NULL) {
2589 mutex_unlock (&adapter->mfe_lock);
2590 return -EBUSY;
59b1842d 2591 }
6594690b 2592 adapter->mfe_dvbdev = dvbdev;
59b1842d 2593 }
59b1842d
DB		 2594 }
2595 }
2596
48136e1e
OE		 2597 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
2598 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 2599 goto err0;
2d196931
DH		 2600
2601 /* If we took control of the bus, we need to force
2602 reinitialization. This is because many ts_bus_ctrl()
2603 functions strobe the RESET pin on the demod, and if the
2604 frontend thread already exists then the dvb_init() routine
2605 won't get called (which is what usually does initial
2606 register configuration). */
2607 fepriv->reinitialise = 1;
ba7e6f3e
ST		 2608 }
2609
48136e1e
OE		 2610 if ((ret = dvb_generic_open (inode, file)) < 0)
2611 goto err1;
04c56d0e 2612
48136e1e 2613 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 2614 /* normal tune mode when opened R/W */
2615 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
2616 fepriv->tone = -1;
2617 fepriv->voltage = -1;
2618
1da177e4
LT		 2619 ret = dvb_frontend_start (fe);
2620 if (ret)
48136e1e 2621 goto err2;
1da177e4
LT		 2622
2623 /* empty event queue */
2624 fepriv->events.eventr = fepriv->events.eventw = 0;
2625 }
2626
59b1842d
DB		 2627 if (adapter->mfe_shared)
2628 mutex_unlock (&adapter->mfe_lock);
1da177e4 2629 return ret;
48136e1e
OE		 2630
2631err2:
2632 dvb_generic_release(inode, file);
2633err1:
2634 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
2635 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 2636err0:
2637 if (adapter->mfe_shared)
2638 mutex_unlock (&adapter->mfe_lock);
48136e1e 2639 return ret;
1da177e4
LT		 2640}
2641
2642static int dvb_frontend_release(struct inode *inode, struct file *file)
2643{
2644 struct dvb_device *dvbdev = file->private_data;
2645 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2646 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 2647 int ret;
1da177e4 2648
36bdbc3f 2649 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2650
b9d5efcc 2651 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1da177e4 2652 fepriv->release_jiffies = jiffies;
b9d5efcc
AO		 2653 mb();
2654 }
1da177e4 2655
ca5be9cd
MR		 2656 ret = dvb_generic_release (inode, file);
2657
48136e1e 2658 if (dvbdev->users == -1) {
b9d5efcc 2659 wake_up(&fepriv->wait_queue);
18ed2860 2660 if (fe->exit != DVB_FE_NO_EXIT)
48136e1e 2661 wake_up(&dvbdev->wait_queue);
48136e1e
OE		 2662 if (fe->ops.ts_bus_ctrl)
2663 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 2664 }
48136e1e 2665
ca5be9cd 2666 return ret;
1da177e4
LT		 2667}
2668
784e29d2 2669static const struct file_operations dvb_frontend_fops = {
1da177e4 2670 .owner = THIS_MODULE,
16ef8def 2671 .unlocked_ioctl = dvb_generic_ioctl,
1da177e4
LT		 2672 .poll = dvb_frontend_poll,
2673 .open = dvb_frontend_open,
6038f373
AB		 2674 .release = dvb_frontend_release,
2675 .llseek = noop_llseek,
1da177e4
LT		 2676};
2677
06bae122
AP		 2678int dvb_frontend_suspend(struct dvb_frontend *fe)
2679{
2680 int ret = 0;
2681
2682 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2683 fe->id);
2684
59d7889a
MCC		 2685 if (fe->ops.tuner_ops.suspend)
2686 ret = fe->ops.tuner_ops.suspend(fe);
2687 else if (fe->ops.tuner_ops.sleep)
06bae122
AP		 2688 ret = fe->ops.tuner_ops.sleep(fe);
2689
2690 if (fe->ops.sleep)
2691 ret = fe->ops.sleep(fe);
2692
2693 return ret;
2694}
2695EXPORT_SYMBOL(dvb_frontend_suspend);
2696
2697int dvb_frontend_resume(struct dvb_frontend *fe)
2698{
2699 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2700 int ret = 0;
2701
2702 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2703 fe->id);
2704
87cd0fa8 2705 fe->exit = DVB_FE_DEVICE_RESUME;
06bae122
AP		 2706 if (fe->ops.init)
2707 ret = fe->ops.init(fe);
2708
59d7889a
MCC		 2709 if (fe->ops.tuner_ops.resume)
2710 ret = fe->ops.tuner_ops.resume(fe);
2711 else if (fe->ops.tuner_ops.init)
06bae122
AP		 2712 ret = fe->ops.tuner_ops.init(fe);
2713
3663b31b
MCC		 2714 if (fe->ops.set_tone && fepriv->tone != -1)
2715 fe->ops.set_tone(fe, fepriv->tone);
2716 if (fe->ops.set_voltage && fepriv->voltage != -1)
2717 fe->ops.set_voltage(fe, fepriv->voltage);
2718
87cd0fa8 2719 fe->exit = DVB_FE_NO_EXIT;
06bae122
AP		 2720 fepriv->state = FESTATE_RETUNE;
2721 dvb_frontend_wakeup(fe);
2722
2723 return ret;
2724}
2725EXPORT_SYMBOL(dvb_frontend_resume);
2726
1da177e4
LT		 2727int dvb_register_frontend(struct dvb_adapter* dvb,
2728 struct dvb_frontend* fe)
2729{
2730 struct dvb_frontend_private *fepriv;
c1b31b1e 2731 const struct dvb_device dvbdev_template = {
1da177e4
LT		 2732 .users = ~0,
2733 .writers = 1,
2734 .readers = (~0)-1,
2735 .fops = &dvb_frontend_fops,
c1b31b1e
MCC		 2736#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
2737 .name = fe->ops.info.name,
2738#endif
1da177e4
LT		 2739 .kernel_ioctl = dvb_frontend_ioctl
2740 };
2741
36bdbc3f 2742 dev_dbg(dvb->device, "%s:\n", __func__);
1da177e4 2743
3593cab5 2744 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 2745 return -ERESTARTSYS;
2746
7408187d 2747 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 2748 if (fe->frontend_priv == NULL) {
3593cab5 2749 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2750 return -ENOMEM;
2751 }
0c53c70f 2752 fepriv = fe->frontend_priv;
1da177e4 2753
a0a4714c 2754 sema_init(&fepriv->sem, 1);
1da177e4
LT		 2755 init_waitqueue_head (&fepriv->wait_queue);
2756 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 2757 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 2758 fe->dvb = dvb;
2759 fepriv->inversion = INVERSION_OFF;
2760
36bdbc3f
AP		 2761 dev_info(fe->dvb->device,
2762 "DVB: registering adapter %i frontend %i (%s)...\n",
2763 fe->dvb->num, fe->id, fe->ops.info.name);
1da177e4
LT		 2764
2765 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
2766 fe, DVB_DEVICE_FRONTEND);
2767
5bfaadde
MCC		 2768 /*
2769 * Initialize the cache to the proper values according with the
2770 * first supported delivery system (ops->delsys[0])
2771 */
240ab508 2772
be431b16 2773 fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
5bfaadde
MCC		 2774 dvb_frontend_clear_cache(fe);
2775
3593cab5 2776 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2777 return 0;
2778}
2779EXPORT_SYMBOL(dvb_register_frontend);
2780
2781int dvb_unregister_frontend(struct dvb_frontend* fe)
2782{
0c53c70f 2783 struct dvb_frontend_private *fepriv = fe->frontend_priv;
36bdbc3f 2784 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2785
57861b43 2786 mutex_lock(&frontend_mutex);
ca5be9cd 2787 dvb_frontend_stop (fe);
57861b43
MR		 2788 mutex_unlock(&frontend_mutex);
2789
2790 if (fepriv->dvbdev->users < -1)
2791 wait_event(fepriv->dvbdev->wait_queue,
2792 fepriv->dvbdev->users==-1);
2793
3593cab5 2794 mutex_lock(&frontend_mutex);
1da177e4 2795 dvb_unregister_device (fepriv->dvbdev);
d9955060 2796
1da177e4
LT		 2797 /* fe is invalid now */
2798 kfree(fepriv);
3593cab5 2799 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2800 return 0;
2801}
2802EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 2803
149ef72d 2804#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 2805void dvb_frontend_detach(struct dvb_frontend* fe)
2806{
2807 void *ptr;
2808
2809 if (fe->ops.release_sec) {
2810 fe->ops.release_sec(fe);
4647f487 2811 dvb_detach(fe->ops.release_sec);
f52a838b
AQ		 2812 }
2813 if (fe->ops.tuner_ops.release) {
2814 fe->ops.tuner_ops.release(fe);
4647f487 2815 dvb_detach(fe->ops.tuner_ops.release);
f52a838b 2816 }
2426a27e
MK		 2817 if (fe->ops.analog_ops.release) {
2818 fe->ops.analog_ops.release(fe);
4647f487 2819 dvb_detach(fe->ops.analog_ops.release);
2426a27e 2820 }
f52a838b
AQ		 2821 ptr = (void*)fe->ops.release;
2822 if (ptr) {
2823 fe->ops.release(fe);
4647f487 2824 dvb_detach(ptr);
f52a838b
AQ		 2825 }
2826}
2827#else
2828void dvb_frontend_detach(struct dvb_frontend* fe)
2829{
2830 if (fe->ops.release_sec)
2831 fe->ops.release_sec(fe);
2832 if (fe->ops.tuner_ops.release)
2833 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 2834 if (fe->ops.analog_ops.release)
2835 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 2836 if (fe->ops.release)
2837 fe->ops.release(fe);
2838}
2839#endif
2840EXPORT_SYMBOL(dvb_frontend_detach);
Ubuntu Artful kernel mirror