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[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb-core / dvb_frontend.c
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1da177e4
LT		 1/*
2 * dvb_frontend.c: DVB frontend tuning interface/thread
3 *
4 *
5 * Copyright (C) 1999-2001 Ralph Metzler
6 * Marcus Metzler
7 * Holger Waechtler
8 * for convergence integrated media GmbH
9 *
10 * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
26 */
27
8de8594a
MCC		 28/* Enables DVBv3 compatibility bits at the headers */
29#define __DVB_CORE__
30
1da177e4
LT		 31#include <linux/string.h>
32#include <linux/kernel.h>
33#include <linux/sched.h>
34#include <linux/wait.h>
35#include <linux/slab.h>
36#include <linux/poll.h>
4c4cb1b1 37#include <linux/semaphore.h>
1da177e4 38#include <linux/module.h>
1da177e4 39#include <linux/list.h>
7dfb7103 40#include <linux/freezer.h>
cc89c229 41#include <linux/jiffies.h>
8eec1429 42#include <linux/kthread.h>
1da177e4 43#include <asm/processor.h>
1da177e4
LT		 44
45#include "dvb_frontend.h"
46#include "dvbdev.h"
eacf8d8d 47#include <linux/dvb/version.h>
1da177e4
LT		 48
49static int dvb_frontend_debug;
849be2cd 50static int dvb_shutdown_timeout;
1da177e4
LT		 51static int dvb_force_auto_inversion;
52static int dvb_override_tune_delay;
53static int dvb_powerdown_on_sleep = 1;
59b1842d 54static int dvb_mfe_wait_time = 5;
1da177e4
LT		 55
56module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 57MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 58module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 59MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 60module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 61MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 62module_param(dvb_override_tune_delay, int, 0644);
1da177e4 63MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 64module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 65MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 66module_param(dvb_mfe_wait_time, int, 0644);
67MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
1da177e4 68
1da177e4
LT		 69#define FESTATE_IDLE 1
70#define FESTATE_RETUNE 2
71#define FESTATE_TUNING_FAST 4
72#define FESTATE_TUNING_SLOW 8
73#define FESTATE_TUNED 16
74#define FESTATE_ZIGZAG_FAST 32
75#define FESTATE_ZIGZAG_SLOW 64
76#define FESTATE_DISEQC 128
01886255 77#define FESTATE_ERROR 256
1da177e4
LT		 78#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
79#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
80#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
81#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16
MA		 82
83#define FE_ALGO_HW 1
1da177e4
LT		 84/*
85 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
86 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
87 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
88 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
89 * FESTATE_TUNED. The frontend has successfully locked on.
90 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
91 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
92 * FESTATE_DISEQC. A DISEQC command has just been issued.
93 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
94 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
95 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
96 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
97 */
98
e36309f5
MC		 99#define DVB_FE_NO_EXIT 0
100#define DVB_FE_NORMAL_EXIT 1
101#define DVB_FE_DEVICE_REMOVED 2
102
3593cab5 103static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 104
105struct dvb_frontend_private {
106
36cb557a 107 /* thread/frontend values */
1da177e4 108 struct dvb_device *dvbdev;
a5959dbe 109 struct dvb_frontend_parameters parameters_out;
1da177e4
LT		 110 struct dvb_fe_events events;
111 struct semaphore sem;
112 struct list_head list_head;
113 wait_queue_head_t wait_queue;
8eec1429 114 struct task_struct *thread;
1da177e4 115 unsigned long release_jiffies;
36cb557a
AQ		 116 unsigned int exit;
117 unsigned int wakeup;
1da177e4 118 fe_status_t status;
400b7083 119 unsigned long tune_mode_flags;
36cb557a 120 unsigned int delay;
86f40cc3 121 unsigned int reinitialise;
64454016
AQ		 122 int tone;
123 int voltage;
36cb557a
AQ		 124
125 /* swzigzag values */
126 unsigned int state;
127 unsigned int bending;
128 int lnb_drift;
129 unsigned int inversion;
130 unsigned int auto_step;
131 unsigned int auto_sub_step;
132 unsigned int started_auto_step;
133 unsigned int min_delay;
134 unsigned int max_drift;
135 unsigned int step_size;
136 int quality;
137 unsigned int check_wrapped;
c59e7870 138 enum dvbfe_search algo_status;
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
1da177e4
LT		 201static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
202{
0c53c70f 203 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 204 struct dvb_fe_events *events = &fepriv->events;
205 struct dvb_frontend_event *e;
206 int wp;
207
36bdbc3f 208 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 209
a689e365 210 if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
7c61d80a 211 dtv_get_frontend(fe, &fepriv->parameters_out);
1da177e4 212
77b1e2fb 213 mutex_lock(&events->mtx);
1da177e4 214
77b1e2fb 215 wp = (events->eventw + 1) % MAX_EVENT;
1da177e4
LT		 216 if (wp == events->eventr) {
217 events->overflow = 1;
218 events->eventr = (events->eventr + 1) % MAX_EVENT;
219 }
220
221 e = &events->events[events->eventw];
77b1e2fb 222 e->status = status;
a5959dbe 223 e->parameters = fepriv->parameters_out;
1da177e4
LT		 224
225 events->eventw = wp;
226
03b76123 227 mutex_unlock(&events->mtx);
1da177e4 228
1da177e4
LT		 229 wake_up_interruptible (&events->wait_queue);
230}
231
232static int dvb_frontend_get_event(struct dvb_frontend *fe,
233 struct dvb_frontend_event *event, int flags)
234{
0c53c70f 235 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 236 struct dvb_fe_events *events = &fepriv->events;
237
36bdbc3f 238 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 239
240 if (events->overflow) {
241 events->overflow = 0;
242 return -EOVERFLOW;
243 }
244
245 if (events->eventw == events->eventr) {
246 int ret;
247
248 if (flags & O_NONBLOCK)
249 return -EWOULDBLOCK;
250
251 up(&fepriv->sem);
252
253 ret = wait_event_interruptible (events->wait_queue,
254 events->eventw != events->eventr);
255
256 if (down_interruptible (&fepriv->sem))
257 return -ERESTARTSYS;
258
259 if (ret < 0)
260 return ret;
261 }
262
77b1e2fb
AO		 263 mutex_lock(&events->mtx);
264 *event = events->events[events->eventr];
1da177e4 265 events->eventr = (events->eventr + 1) % MAX_EVENT;
03b76123 266 mutex_unlock(&events->mtx);
1da177e4
LT		 267
268 return 0;
269}
270
20640bea
AO		 271static void dvb_frontend_clear_events(struct dvb_frontend *fe)
272{
273 struct dvb_frontend_private *fepriv = fe->frontend_priv;
274 struct dvb_fe_events *events = &fepriv->events;
275
276 mutex_lock(&events->mtx);
277 events->eventr = events->eventw;
278 mutex_unlock(&events->mtx);
279}
280
1da177e4
LT		 281static void dvb_frontend_init(struct dvb_frontend *fe)
282{
36bdbc3f
AP		 283 dev_dbg(fe->dvb->device,
284 "%s: initialising adapter %i frontend %i (%s)...\n",
285 __func__, fe->dvb->num, fe->id, fe->ops.info.name);
dea74869
PB		 286
287 if (fe->ops.init)
288 fe->ops.init(fe);
289 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 290 if (fe->ops.i2c_gate_ctrl)
291 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 292 fe->ops.tuner_ops.init(fe);
293 if (fe->ops.i2c_gate_ctrl)
294 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 295 }
1da177e4
LT		 296}
297
86f40cc3
AQ		 298void dvb_frontend_reinitialise(struct dvb_frontend *fe)
299{
300 struct dvb_frontend_private *fepriv = fe->frontend_priv;
301
302 fepriv->reinitialise = 1;
303 dvb_frontend_wakeup(fe);
304}
305EXPORT_SYMBOL(dvb_frontend_reinitialise);
306
36cb557a 307static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 308{
36cb557a 309 int q2;
36bdbc3f 310 struct dvb_frontend *fe = fepriv->dvbdev->priv;
1da177e4 311
36bdbc3f 312 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 313
36cb557a
AQ		 314 if (locked)
315 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
316 else
317 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 318
36cb557a
AQ		 319 q2 = fepriv->quality - 128;
320 q2 *= q2;
1da177e4 321
36cb557a 322 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 323}
324
325/**
326 * Performs automatic twiddling of frontend parameters.
327 *
328 * @param fe The frontend concerned.
329 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
330 * @returns Number of complete iterations that have been performed.
331 */
36cb557a 332static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 333{
334 int autoinversion;
335 int ready = 0;
01886255 336 int fe_set_err = 0;
0c53c70f 337 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4
MCC		 338 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
339 int original_inversion = c->inversion;
340 u32 original_frequency = c->frequency;
1da177e4
LT		 341
342 /* are we using autoinversion? */
dea74869 343 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4 344 (c->inversion == INVERSION_AUTO));
1da177e4
LT		 345
346 /* setup parameters correctly */
347 while(!ready) {
348 /* calculate the lnb_drift */
349 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
350
351 /* wrap the auto_step if we've exceeded the maximum drift */
352 if (fepriv->lnb_drift > fepriv->max_drift) {
353 fepriv->auto_step = 0;
354 fepriv->auto_sub_step = 0;
355 fepriv->lnb_drift = 0;
356 }
357
358 /* perform inversion and +/- zigzag */
359 switch(fepriv->auto_sub_step) {
360 case 0:
361 /* try with the current inversion and current drift setting */
362 ready = 1;
363 break;
364
365 case 1:
366 if (!autoinversion) break;
367
368 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
369 ready = 1;
370 break;
371
372 case 2:
373 if (fepriv->lnb_drift == 0) break;
374
375 fepriv->lnb_drift = -fepriv->lnb_drift;
376 ready = 1;
377 break;
378
379 case 3:
380 if (fepriv->lnb_drift == 0) break;
381 if (!autoinversion) break;
382
383 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
384 fepriv->lnb_drift = -fepriv->lnb_drift;
385 ready = 1;
386 break;
387
388 default:
389 fepriv->auto_step++;
390 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
391 break;
392 }
393
394 if (!ready) fepriv->auto_sub_step++;
395 }
396
397 /* if this attempt would hit where we started, indicate a complete
398 * iteration has occurred */
399 if ((fepriv->auto_step == fepriv->started_auto_step) &&
400 (fepriv->auto_sub_step == 0) && check_wrapped) {
401 return 1;
402 }
403
36bdbc3f
AP		 404 dev_dbg(fe->dvb->device, "%s: drift:%i inversion:%i auto_step:%i " \
405 "auto_sub_step:%i started_auto_step:%i\n",
406 __func__, fepriv->lnb_drift, fepriv->inversion,
407 fepriv->auto_step, fepriv->auto_sub_step,
408 fepriv->started_auto_step);
1da177e4
LT		 409
410 /* set the frontend itself */
ac3852c4 411 c->frequency += fepriv->lnb_drift;
1da177e4 412 if (autoinversion)
ac3852c4
MCC		 413 c->inversion = fepriv->inversion;
414 tmp = *c;
dea74869 415 if (fe->ops.set_frontend)
bc9cd273 416 fe_set_err = fe->ops.set_frontend(fe);
ac3852c4 417 *c = tmp;
01886255
JG		 418 if (fe_set_err < 0) {
419 fepriv->state = FESTATE_ERROR;
420 return fe_set_err;
421 }
1da177e4 422
ac3852c4
MCC		 423 c->frequency = original_frequency;
424 c->inversion = original_inversion;
1da177e4
LT		 425
426 fepriv->auto_sub_step++;
427 return 0;
428}
429
36cb557a
AQ		 430static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
431{
30d9464c 432 fe_status_t s = 0;
01886255 433 int retval = 0;
36cb557a 434 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4 435 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
36cb557a
AQ		 436
437 /* if we've got no parameters, just keep idling */
438 if (fepriv->state & FESTATE_IDLE) {
439 fepriv->delay = 3*HZ;
440 fepriv->quality = 0;
441 return;
442 }
443
444 /* in SCAN mode, we just set the frontend when asked and leave it alone */
445 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
446 if (fepriv->state & FESTATE_RETUNE) {
ac3852c4 447 tmp = *c;
dea74869 448 if (fe->ops.set_frontend)
bc9cd273 449 retval = fe->ops.set_frontend(fe);
ac3852c4 450 *c = tmp;
01886255
JG		 451 if (retval < 0)
452 fepriv->state = FESTATE_ERROR;
453 else
454 fepriv->state = FESTATE_TUNED;
36cb557a
AQ		 455 }
456 fepriv->delay = 3*HZ;
457 fepriv->quality = 0;
458 return;
459 }
460
461 /* get the frontend status */
462 if (fepriv->state & FESTATE_RETUNE) {
463 s = 0;
464 } else {
dea74869
PB		 465 if (fe->ops.read_status)
466 fe->ops.read_status(fe, &s);
36cb557a
AQ		 467 if (s != fepriv->status) {
468 dvb_frontend_add_event(fe, s);
469 fepriv->status = s;
470 }
471 }
472
473 /* if we're not tuned, and we have a lock, move to the TUNED state */
474 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
475 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
476 fepriv->state = FESTATE_TUNED;
477
478 /* if we're tuned, then we have determined the correct inversion */
dea74869 479 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4
MCC		 480 (c->inversion == INVERSION_AUTO)) {
481 c->inversion = fepriv->inversion;
36cb557a
AQ		 482 }
483 return;
484 }
485
486 /* if we are tuned already, check we're still locked */
487 if (fepriv->state & FESTATE_TUNED) {
488 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
489
490 /* we're tuned, and the lock is still good... */
491 if (s & FE_HAS_LOCK) {
492 return;
493 } else { /* if we _WERE_ tuned, but now don't have a lock */
494 fepriv->state = FESTATE_ZIGZAG_FAST;
495 fepriv->started_auto_step = fepriv->auto_step;
496 fepriv->check_wrapped = 0;
497 }
498 }
499
500 /* don't actually do anything if we're in the LOSTLOCK state,
501 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
502 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 503 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 504 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
505 return;
506 }
507
508 /* don't do anything if we're in the DISEQC state, since this
509 * might be someone with a motorized dish controlled by DISEQC.
510 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
511 if (fepriv->state & FESTATE_DISEQC) {
512 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
513 return;
514 }
515
516 /* if we're in the RETUNE state, set everything up for a brand
517 * new scan, keeping the current inversion setting, as the next
518 * tune is _very_ likely to require the same */
519 if (fepriv->state & FESTATE_RETUNE) {
520 fepriv->lnb_drift = 0;
521 fepriv->auto_step = 0;
522 fepriv->auto_sub_step = 0;
523 fepriv->started_auto_step = 0;
524 fepriv->check_wrapped = 0;
525 }
526
527 /* fast zigzag. */
528 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
529 fepriv->delay = fepriv->min_delay;
530
2030c032 531 /* perform a tune */
01886255
JG		 532 retval = dvb_frontend_swzigzag_autotune(fe,
533 fepriv->check_wrapped);
534 if (retval < 0) {
535 return;
536 } else if (retval) {
36cb557a
AQ		 537 /* OK, if we've run out of trials at the fast speed.
538 * Drop back to slow for the _next_ attempt */
539 fepriv->state = FESTATE_SEARCHING_SLOW;
540 fepriv->started_auto_step = fepriv->auto_step;
541 return;
542 }
543 fepriv->check_wrapped = 1;
544
545 /* if we've just retuned, enter the ZIGZAG_FAST state.
546 * This ensures we cannot return from an
547 * FE_SET_FRONTEND ioctl before the first frontend tune
548 * occurs */
549 if (fepriv->state & FESTATE_RETUNE) {
550 fepriv->state = FESTATE_TUNING_FAST;
551 }
552 }
553
554 /* slow zigzag */
555 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
556 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
557
558 /* Note: don't bother checking for wrapping; we stay in this
559 * state until we get a lock */
560 dvb_frontend_swzigzag_autotune(fe, 0);
561 }
562}
563
1da177e4
LT		 564static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
565{
0c53c70f 566 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 567
e36309f5 568 if (fepriv->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 569 return 1;
570
571 if (fepriv->dvbdev->writers == 1)
b9d5efcc 572 if (time_after_eq(jiffies, fepriv->release_jiffies +
36cb557a 573 dvb_shutdown_timeout * HZ))
1da177e4
LT		 574 return 1;
575
576 return 0;
577}
578
579static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
580{
0c53c70f 581 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 582
583 if (fepriv->wakeup) {
584 fepriv->wakeup = 0;
585 return 1;
586 }
587 return dvb_frontend_is_exiting(fe);
588}
589
590static void dvb_frontend_wakeup(struct dvb_frontend *fe)
591{
0c53c70f 592 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 593
594 fepriv->wakeup = 1;
595 wake_up_interruptible(&fepriv->wait_queue);
596}
597
1da177e4
LT		 598static int dvb_frontend_thread(void *data)
599{
0c53c70f
JS		 600 struct dvb_frontend *fe = data;
601 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 602 fe_status_t s;
c59e7870
MA		 603 enum dvbfe_algo algo;
604
7e072221 605 bool re_tune = false;
1da177e4 606
36bdbc3f 607 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 608
36cb557a
AQ		 609 fepriv->check_wrapped = 0;
610 fepriv->quality = 0;
611 fepriv->delay = 3*HZ;
1da177e4 612 fepriv->status = 0;
1da177e4 613 fepriv->wakeup = 0;
04c56d0e
AQ		 614 fepriv->reinitialise = 0;
615
616 dvb_frontend_init(fe);
1da177e4 617
83144186 618 set_freezable();
1da177e4
LT		 619 while (1) {
620 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 621restart:
94238e9b 622 wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 623 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
624 || freezing(current),
8eec1429
HP		 625 fepriv->delay);
626
627 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4 628 /* got signal or quitting */
e36309f5 629 fepriv->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 630 break;
631 }
632
8eec1429 633 if (try_to_freeze())
6591691b 634 goto restart;
1da177e4
LT		 635
636 if (down_interruptible(&fepriv->sem))
637 break;
638
86f40cc3
AQ		 639 if (fepriv->reinitialise) {
640 dvb_frontend_init(fe);
42f4e774 641 if (fe->ops.set_tone && fepriv->tone != -1)
dea74869 642 fe->ops.set_tone(fe, fepriv->tone);
42f4e774 643 if (fe->ops.set_voltage && fepriv->voltage != -1)
dea74869 644 fe->ops.set_voltage(fe, fepriv->voltage);
86f40cc3
AQ		 645 fepriv->reinitialise = 0;
646 }
647
36cb557a 648 /* do an iteration of the tuning loop */
d772bd03 649 if (fe->ops.get_frontend_algo) {
c59e7870
MA		 650 algo = fe->ops.get_frontend_algo(fe);
651 switch (algo) {
652 case DVBFE_ALGO_HW:
36bdbc3f 653 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
c59e7870 654
d772bd03 655 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 656 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTATE_RETUNE\n", __func__);
7e072221 657 re_tune = true;
d772bd03 658 fepriv->state = FESTATE_TUNED;
45145b67
SA		 659 } else {
660 re_tune = false;
d772bd03
MA		 661 }
662
c59e7870 663 if (fe->ops.tune)
7e072221 664 fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s);
c59e7870 665
2fac9a0f 666 if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
36bdbc3f 667 dev_dbg(fe->dvb->device, "%s: state changed, adding current state\n", __func__);
d772bd03
MA		 668 dvb_frontend_add_event(fe, s);
669 fepriv->status = s;
670 }
c59e7870
MA		 671 break;
672 case DVBFE_ALGO_SW:
36bdbc3f 673 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
70d90635 674 dvb_frontend_swzigzag(fe);
c59e7870
MA		 675 break;
676 case DVBFE_ALGO_CUSTOM:
36bdbc3f 677 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
c59e7870 678 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 679 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTAT_RETUNE\n", __func__);
c59e7870
MA		 680 fepriv->state = FESTATE_TUNED;
681 }
682 /* Case where we are going to search for a carrier
683 * User asked us to retune again for some reason, possibly
684 * requesting a search with a new set of parameters
685 */
686 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
7bcbdf38 687 if (fe->ops.search) {
41da5320 688 fepriv->algo_status = fe->ops.search(fe);
c59e7870
MA		 689 /* We did do a search as was requested, the flags are
690 * now unset as well and has the flags wrt to search.
691 */
7bcbdf38
AJ		 692 } else {
693 fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
694 }
c59e7870
MA		 695 }
696 /* Track the carrier if the search was successful */
1b5d8716 697 if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) {
7bcbdf38
AJ		 698 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
699 fepriv->delay = HZ / 2;
700 }
556a0442 701 dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
7bcbdf38
AJ		 702 fe->ops.read_status(fe, &s);
703 if (s != fepriv->status) {
704 dvb_frontend_add_event(fe, s); /* update event list */
705 fepriv->status = s;
706 if (!(s & FE_HAS_LOCK)) {
707 fepriv->delay = HZ / 10;
708 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
709 } else {
710 fepriv->delay = 60 * HZ;
711 }
c59e7870
MA		 712 }
713 break;
714 default:
36bdbc3f 715 dev_dbg(fe->dvb->device, "%s: UNDEFINED ALGO !\n", __func__);
c59e7870
MA		 716 break;
717 }
718 } else {
4a4edcca 719 dvb_frontend_swzigzag(fe);
c59e7870 720 }
1da177e4
LT		 721 }
722
608f62d6
OE		 723 if (dvb_powerdown_on_sleep) {
724 if (fe->ops.set_voltage)
725 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869 726 if (fe->ops.tuner_ops.sleep) {
41286d97
DH		 727 if (fe->ops.i2c_gate_ctrl)
728 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 729 fe->ops.tuner_ops.sleep(fe);
730 if (fe->ops.i2c_gate_ctrl)
731 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 732 }
dea74869
PB		 733 if (fe->ops.sleep)
734 fe->ops.sleep(fe);
1da177e4
LT		 735 }
736
8eec1429 737 fepriv->thread = NULL;
e36309f5
MC		 738 if (kthread_should_stop())
739 fepriv->exit = DVB_FE_DEVICE_REMOVED;
740 else
741 fepriv->exit = DVB_FE_NO_EXIT;
1da177e4
LT		 742 mb();
743
744 dvb_frontend_wakeup(fe);
745 return 0;
746}
747
748static void dvb_frontend_stop(struct dvb_frontend *fe)
749{
0c53c70f 750 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 751
36bdbc3f 752 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 753
e36309f5 754 fepriv->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 755 mb();
756
8eec1429 757 if (!fepriv->thread)
1da177e4
LT		 758 return;
759
8eec1429 760 kthread_stop(fepriv->thread);
ca5be9cd 761
a0a4714c 762 sema_init(&fepriv->sem, 1);
1da177e4
LT		 763 fepriv->state = FESTATE_IDLE;
764
765 /* paranoia check in case a signal arrived */
8eec1429 766 if (fepriv->thread)
36bdbc3f
AP		 767 dev_warn(fe->dvb->device,
768 "dvb_frontend_stop: warning: thread %p won't exit\n",
8eec1429 769 fepriv->thread);
1da177e4
LT		 770}
771
83b75b04
N		 772s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
773{
774 return ((curtime.tv_usec < lasttime.tv_usec) ?
775 1000000 - lasttime.tv_usec + curtime.tv_usec :
776 curtime.tv_usec - lasttime.tv_usec);
777}
778EXPORT_SYMBOL(timeval_usec_diff);
779
780static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
781{
782 curtime->tv_usec += add_usec;
783 if (curtime->tv_usec >= 1000000) {
784 curtime->tv_usec -= 1000000;
785 curtime->tv_sec++;
786 }
787}
788
789/*
790 * Sleep until gettimeofday() > waketime + add_usec
791 * This needs to be as precise as possible, but as the delay is
792 * usually between 2ms and 32ms, it is done using a scheduled msleep
793 * followed by usleep (normally a busy-wait loop) for the remainder
794 */
795void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
796{
797 struct timeval lasttime;
798 s32 delta, newdelta;
799
800 timeval_usec_add(waketime, add_usec);
801
802 do_gettimeofday(&lasttime);
803 delta = timeval_usec_diff(lasttime, *waketime);
804 if (delta > 2500) {
805 msleep((delta - 1500) / 1000);
806 do_gettimeofday(&lasttime);
807 newdelta = timeval_usec_diff(lasttime, *waketime);
808 delta = (newdelta > delta) ? 0 : newdelta;
809 }
810 if (delta > 0)
811 udelay(delta);
812}
813EXPORT_SYMBOL(dvb_frontend_sleep_until);
814
1da177e4
LT		 815static int dvb_frontend_start(struct dvb_frontend *fe)
816{
817 int ret;
0c53c70f 818 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 819 struct task_struct *fe_thread;
1da177e4 820
36bdbc3f 821 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 822
8eec1429 823 if (fepriv->thread) {
e36309f5 824 if (fepriv->exit == DVB_FE_NO_EXIT)
1da177e4
LT		 825 return 0;
826 else
827 dvb_frontend_stop (fe);
828 }
829
830 if (signal_pending(current))
831 return -EINTR;
832 if (down_interruptible (&fepriv->sem))
833 return -EINTR;
834
835 fepriv->state = FESTATE_IDLE;
e36309f5 836 fepriv->exit = DVB_FE_NO_EXIT;
8eec1429 837 fepriv->thread = NULL;
1da177e4
LT		 838 mb();
839
8eec1429 840 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 841 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 842 if (IS_ERR(fe_thread)) {
843 ret = PTR_ERR(fe_thread);
36bdbc3f
AP		 844 dev_warn(fe->dvb->device,
845 "dvb_frontend_start: failed to start kthread (%d)\n",
846 ret);
1da177e4
LT		 847 up(&fepriv->sem);
848 return ret;
849 }
8eec1429 850 fepriv->thread = fe_thread;
1da177e4
LT		 851 return 0;
852}
853
2030c032 854static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
c471b331
OE		 855 u32 *freq_min, u32 *freq_max)
856{
857 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
858
859 if (fe->ops.info.frequency_max == 0)
860 *freq_max = fe->ops.tuner_ops.info.frequency_max;
861 else if (fe->ops.tuner_ops.info.frequency_max == 0)
862 *freq_max = fe->ops.info.frequency_max;
863 else
864 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
865
866 if (*freq_min == 0 || *freq_max == 0)
36bdbc3f
AP		 867 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
868 fe->dvb->num, fe->id);
c471b331
OE		 869}
870
5bfaadde 871static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
1fab46f0 872{
5bfaadde 873 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c471b331
OE		 874 u32 freq_min;
875 u32 freq_max;
876
1fab46f0 877 /* range check: frequency */
2030c032 878 dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
5bfaadde
MCC		 879 if ((freq_min && c->frequency < freq_min) ||
880 (freq_max && c->frequency > freq_max)) {
36bdbc3f
AP		 881 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
882 fe->dvb->num, fe->id, c->frequency,
883 freq_min, freq_max);
1fab46f0
OE		 884 return -EINVAL;
885 }
886
887 /* range check: symbol rate */
5bfaadde
MCC		 888 switch (c->delivery_system) {
889 case SYS_DVBS:
890 case SYS_DVBS2:
891 case SYS_TURBO:
892 case SYS_DVBC_ANNEX_A:
893 case SYS_DVBC_ANNEX_C:
1fab46f0 894 if ((fe->ops.info.symbol_rate_min &&
5bfaadde 895 c->symbol_rate < fe->ops.info.symbol_rate_min) ||
1fab46f0 896 (fe->ops.info.symbol_rate_max &&
5bfaadde 897 c->symbol_rate > fe->ops.info.symbol_rate_max)) {
36bdbc3f
AP		 898 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
899 fe->dvb->num, fe->id, c->symbol_rate,
900 fe->ops.info.symbol_rate_min,
901 fe->ops.info.symbol_rate_max);
1fab46f0
OE		 902 return -EINVAL;
903 }
5bfaadde
MCC		 904 default:
905 break;
1fab46f0
OE		 906 }
907
908 return 0;
909}
910
b6e760f3
PB		 911static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
912{
50727719 913 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
b6e760f3 914 int i;
149709f5 915 u32 delsys;
b6e760f3 916
149709f5 917 delsys = c->delivery_system;
50727719 918 memset(c, 0, sizeof(struct dtv_frontend_properties));
149709f5 919 c->delivery_system = delsys;
50727719
AO		 920
921 c->state = DTV_CLEAR;
26c924fe 922
36bdbc3f
AP		 923 dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n",
924 __func__, c->delivery_system);
26c924fe 925
50727719 926 c->transmission_mode = TRANSMISSION_MODE_AUTO;
26c924fe 927 c->bandwidth_hz = 0; /* AUTO */
50727719
AO		 928 c->guard_interval = GUARD_INTERVAL_AUTO;
929 c->hierarchy = HIERARCHY_AUTO;
26c924fe 930 c->symbol_rate = 0;
50727719
AO		 931 c->code_rate_HP = FEC_AUTO;
932 c->code_rate_LP = FEC_AUTO;
26c924fe 933 c->fec_inner = FEC_AUTO;
39ce61a8 934 c->rolloff = ROLLOFF_AUTO;
26c924fe 935 c->voltage = SEC_VOLTAGE_OFF;
26c924fe
MCC		 936 c->sectone = SEC_TONE_OFF;
937 c->pilot = PILOT_AUTO;
50727719 938
a520ca97
MCC		 939 c->isdbt_partial_reception = 0;
940 c->isdbt_sb_mode = 0;
941 c->isdbt_sb_subchannel = 0;
942 c->isdbt_sb_segment_idx = 0;
943 c->isdbt_sb_segment_count = 0;
944 c->isdbt_layer_enabled = 0;
b6e760f3 945 for (i = 0; i < 3; i++) {
50727719
AO		 946 c->layer[i].fec = FEC_AUTO;
947 c->layer[i].modulation = QAM_AUTO;
a520ca97
MCC		 948 c->layer[i].interleaving = 0;
949 c->layer[i].segment_count = 0;
b6e760f3
PB		 950 }
951
287cefd0 952 c->stream_id = NO_STREAM_ID_FILTER;
26c924fe 953
5bfaadde
MCC		 954 switch (c->delivery_system) {
955 case SYS_DVBS:
956 case SYS_DVBS2:
957 case SYS_TURBO:
958 c->modulation = QPSK; /* implied for DVB-S in legacy API */
959 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
960 break;
961 case SYS_ATSC:
962 c->modulation = VSB_8;
963 break;
964 default:
965 c->modulation = QAM_AUTO;
966 break;
967 }
968
33eebec5
AP		 969 c->lna = LNA_AUTO;
970
b6e760f3
PB		 971 return 0;
972}
973
974#define _DTV_CMD(n, s, b) \
975[n] = { \
976 .name = #n, \
977 .cmd = n, \
978 .set = s,\
979 .buffer = b \
980}
981
ec05a642 982static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
06d3a396
MCC		 983 _DTV_CMD(DTV_TUNE, 1, 0),
984 _DTV_CMD(DTV_CLEAR, 1, 0),
6b73eeaf
ST		 985
986 /* Set */
06d3a396
MCC		 987 _DTV_CMD(DTV_FREQUENCY, 1, 0),
988 _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
989 _DTV_CMD(DTV_MODULATION, 1, 0),
990 _DTV_CMD(DTV_INVERSION, 1, 0),
991 _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
992 _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
993 _DTV_CMD(DTV_INNER_FEC, 1, 0),
994 _DTV_CMD(DTV_VOLTAGE, 1, 0),
995 _DTV_CMD(DTV_TONE, 1, 0),
996 _DTV_CMD(DTV_PILOT, 1, 0),
997 _DTV_CMD(DTV_ROLLOFF, 1, 0),
998 _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
999 _DTV_CMD(DTV_HIERARCHY, 1, 0),
1000 _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
1001 _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
1002 _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
1003 _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
224b6642 1004 _DTV_CMD(DTV_INTERLEAVING, 1, 0),
b6e760f3
PB		 1005
1006 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
1007 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
1008 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
1009 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
1010 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
e7b7949a 1011 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
b6e760f3
PB		 1012 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
1013 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
1014 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
1015 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
1016 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
1017 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
1018 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
1019 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
1020 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
1021 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
1022 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
1023 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
1024
287cefd0
EP		 1025 _DTV_CMD(DTV_STREAM_ID, 1, 0),
1026 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
8a2697ab 1027 _DTV_CMD(DTV_LNA, 1, 0),
98293ef3 1028
6b73eeaf 1029 /* Get */
06d3a396
MCC		 1030 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
1031 _DTV_CMD(DTV_API_VERSION, 0, 0),
ba2780c7
MA		 1032
1033 _DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
ca689488
MK		 1034
1035 _DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
1036 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
1037
1038 _DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
ca689488
MK		 1039 _DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
1040 _DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
1041 _DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
1042 _DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
1043 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
ca689488
MK		 1044 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
1045 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
1046 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
1047 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
1048 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
1049 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
1050 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
6b73eeaf
ST		 1051};
1052
36bdbc3f 1053static void dtv_property_dump(struct dvb_frontend *fe, struct dtv_property *tvp)
6b73eeaf
ST		 1054{
1055 int i;
1056
106ff9e0 1057 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
36bdbc3f
AP		 1058 dev_warn(fe->dvb->device, "%s: tvp.cmd = 0x%08x undefined\n",
1059 __func__, tvp->cmd);
4aae8efb
DB		 1060 return;
1061 }
1062
36bdbc3f
AP		 1063 dev_dbg(fe->dvb->device, "%s: tvp.cmd = 0x%08x (%s)\n", __func__,
1064 tvp->cmd, dtv_cmds[tvp->cmd].name);
6b73eeaf 1065
36bdbc3f
AP		 1066 if (dtv_cmds[tvp->cmd].buffer) {
1067 dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
1068 __func__, tvp->u.buffer.len);
6b73eeaf
ST		 1069
1070 for(i = 0; i < tvp->u.buffer.len; i++)
36bdbc3f
AP		 1071 dev_dbg(fe->dvb->device,
1072 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1073 __func__, i, tvp->u.buffer.data[i]);
1074 } else {
1075 dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__,
1076 tvp->u.data);
1077 }
6b73eeaf
ST		 1078}
1079
ee33c525
ST		 1080/* Synchronise the legacy tuning parameters into the cache, so that demodulator
1081 * drivers can use a single set_frontend tuning function, regardless of whether
1082 * it's being used for the legacy or new API, reducing code and complexity.
1083 */
5bfaadde
MCC		 1084static int dtv_property_cache_sync(struct dvb_frontend *fe,
1085 struct dtv_frontend_properties *c,
1086 const struct dvb_frontend_parameters *p)
ee33c525 1087{
ee33c525
ST		 1088 c->frequency = p->frequency;
1089 c->inversion = p->inversion;
1090
5bfaadde
MCC		 1091 switch (dvbv3_type(c->delivery_system)) {
1092 case DVBV3_QPSK:
36bdbc3f 1093 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
ee33c525
ST		 1094 c->symbol_rate = p->u.qpsk.symbol_rate;
1095 c->fec_inner = p->u.qpsk.fec_inner;
1096 break;
5bfaadde 1097 case DVBV3_QAM:
36bdbc3f 1098 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
ee33c525
ST		 1099 c->symbol_rate = p->u.qam.symbol_rate;
1100 c->fec_inner = p->u.qam.fec_inner;
1101 c->modulation = p->u.qam.modulation;
1102 break;
5bfaadde 1103 case DVBV3_OFDM:
36bdbc3f
AP		 1104 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
1105
9a27e6a0
MCC		 1106 switch (p->u.ofdm.bandwidth) {
1107 case BANDWIDTH_10_MHZ:
1108 c->bandwidth_hz = 10000000;
1109 break;
1110 case BANDWIDTH_8_MHZ:
75b7f943 1111 c->bandwidth_hz = 8000000;
9a27e6a0
MCC		 1112 break;
1113 case BANDWIDTH_7_MHZ:
1114 c->bandwidth_hz = 7000000;
1115 break;
1116 case BANDWIDTH_6_MHZ:
1117 c->bandwidth_hz = 6000000;
1118 break;
1119 case BANDWIDTH_5_MHZ:
1120 c->bandwidth_hz = 5000000;
1121 break;
1122 case BANDWIDTH_1_712_MHZ:
1123 c->bandwidth_hz = 1712000;
1124 break;
1125 case BANDWIDTH_AUTO:
75b7f943 1126 c->bandwidth_hz = 0;
9a27e6a0
MCC		 1127 }
1128
ee33c525
ST		 1129 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1130 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1131 c->modulation = p->u.ofdm.constellation;
1132 c->transmission_mode = p->u.ofdm.transmission_mode;
1133 c->guard_interval = p->u.ofdm.guard_interval;
1134 c->hierarchy = p->u.ofdm.hierarchy_information;
1135 break;
5bfaadde 1136 case DVBV3_ATSC:
36bdbc3f 1137 dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__);
ee33c525 1138 c->modulation = p->u.vsb.modulation;
ca689488
MK		 1139 if (c->delivery_system == SYS_ATSCMH)
1140 break;
80a773c9
ST		 1141 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1142 c->delivery_system = SYS_ATSC;
1143 else
1144 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525 1145 break;
5bfaadde 1146 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1147 dev_err(fe->dvb->device,
1148 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1149 __func__, c->delivery_system);
5bfaadde 1150 return -EINVAL;
ee33c525 1151 }
5bfaadde
MCC		 1152
1153 return 0;
ee33c525
ST		 1154}
1155
d5748f10
ST		 1156/* Ensure the cached values are set correctly in the frontend
1157 * legacy tuning structures, for the advanced tuning API.
1158 */
5bfaadde 1159static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
a689e365 1160 struct dvb_frontend_parameters *p)
6b73eeaf 1161{
15cc2bb3 1162 const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1163
d5748f10
ST		 1164 p->frequency = c->frequency;
1165 p->inversion = c->inversion;
6b73eeaf 1166
5bfaadde
MCC		 1167 switch (dvbv3_type(c->delivery_system)) {
1168 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1169 dev_err(fe->dvb->device,
1170 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1171 __func__, c->delivery_system);
5bfaadde
MCC		 1172 return -EINVAL;
1173 case DVBV3_QPSK:
36bdbc3f 1174 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
d5748f10
ST		 1175 p->u.qpsk.symbol_rate = c->symbol_rate;
1176 p->u.qpsk.fec_inner = c->fec_inner;
1177 break;
5bfaadde 1178 case DVBV3_QAM:
36bdbc3f 1179 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
d5748f10
ST		 1180 p->u.qam.symbol_rate = c->symbol_rate;
1181 p->u.qam.fec_inner = c->fec_inner;
1182 p->u.qam.modulation = c->modulation;
1183 break;
5bfaadde 1184 case DVBV3_OFDM:
36bdbc3f 1185 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
9a27e6a0
MCC		 1186 switch (c->bandwidth_hz) {
1187 case 10000000:
1188 p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
1189 break;
1190 case 8000000:
75b7f943 1191 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
9a27e6a0
MCC		 1192 break;
1193 case 7000000:
1194 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1195 break;
1196 case 6000000:
1197 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1198 break;
1199 case 5000000:
1200 p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
1201 break;
1202 case 1712000:
1203 p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
1204 break;
1205 case 0:
1206 default:
75b7f943 1207 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
9a27e6a0 1208 }
d5748f10
ST		 1209 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1210 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1211 p->u.ofdm.constellation = c->modulation;
1212 p->u.ofdm.transmission_mode = c->transmission_mode;
1213 p->u.ofdm.guard_interval = c->guard_interval;
1214 p->u.ofdm.hierarchy_information = c->hierarchy;
1215 break;
5bfaadde 1216 case DVBV3_ATSC:
36bdbc3f 1217 dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__);
d5748f10
ST		 1218 p->u.vsb.modulation = c->modulation;
1219 break;
1220 }
5bfaadde 1221 return 0;
6b73eeaf
ST		 1222}
1223
a689e365
MCC		 1224/**
1225 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1226 * @fe: struct dvb_frontend pointer
1227 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1228 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1229 *
1230 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1231 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1232 * If p_out is not null, it will update the DVBv3 params pointed by it.
1233 */
1234static int dtv_get_frontend(struct dvb_frontend *fe,
a689e365
MCC		 1235 struct dvb_frontend_parameters *p_out)
1236{
a689e365
MCC		 1237 int r;
1238
a689e365 1239 if (fe->ops.get_frontend) {
7c61d80a 1240 r = fe->ops.get_frontend(fe);
a689e365
MCC		 1241 if (unlikely(r < 0))
1242 return r;
7c61d80a 1243 if (p_out)
a689e365
MCC		 1244 dtv_property_legacy_params_sync(fe, p_out);
1245 return 0;
1246 }
1247
7c61d80a 1248 /* As everything is in cache, get_frontend fops are always supported */
b1e9a650 1249 return 0;
a689e365
MCC		 1250}
1251
16ef8def 1252static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5 1253 unsigned int cmd, void *parg);
16ef8def 1254static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1255 unsigned int cmd, void *parg);
1256
072ce0c5 1257static int dtv_property_process_get(struct dvb_frontend *fe,
a689e365 1258 const struct dtv_frontend_properties *c,
072ce0c5 1259 struct dtv_property *tvp,
16ef8def 1260 struct file *file)
363429a0 1261{
5bfaadde 1262 int r, ncaps;
bfbf2dae 1263
363429a0 1264 switch(tvp->cmd) {
ba2780c7 1265 case DTV_ENUM_DELSYS:
5bfaadde
MCC		 1266 ncaps = 0;
1267 while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
1268 tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
1269 ncaps++;
1270 }
1271 tvp->u.buffer.len = ncaps;
ba2780c7 1272 break;
363429a0 1273 case DTV_FREQUENCY:
50727719 1274 tvp->u.data = c->frequency;
363429a0
ST		 1275 break;
1276 case DTV_MODULATION:
50727719 1277 tvp->u.data = c->modulation;
363429a0 1278 break;
75b7f943 1279 case DTV_BANDWIDTH_HZ:
50727719 1280 tvp->u.data = c->bandwidth_hz;
363429a0
ST		 1281 break;
1282 case DTV_INVERSION:
50727719 1283 tvp->u.data = c->inversion;
363429a0
ST		 1284 break;
1285 case DTV_SYMBOL_RATE:
50727719 1286 tvp->u.data = c->symbol_rate;
363429a0
ST		 1287 break;
1288 case DTV_INNER_FEC:
50727719 1289 tvp->u.data = c->fec_inner;
363429a0
ST		 1290 break;
1291 case DTV_PILOT:
50727719 1292 tvp->u.data = c->pilot;
363429a0
ST		 1293 break;
1294 case DTV_ROLLOFF:
50727719 1295 tvp->u.data = c->rolloff;
363429a0
ST		 1296 break;
1297 case DTV_DELIVERY_SYSTEM:
50727719 1298 tvp->u.data = c->delivery_system;
363429a0 1299 break;
363429a0 1300 case DTV_VOLTAGE:
50727719 1301 tvp->u.data = c->voltage;
363429a0
ST		 1302 break;
1303 case DTV_TONE:
50727719 1304 tvp->u.data = c->sectone;
363429a0 1305 break;
eacf8d8d
ST		 1306 case DTV_API_VERSION:
1307 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1308 break;
a4de91be 1309 case DTV_CODE_RATE_HP:
50727719 1310 tvp->u.data = c->code_rate_HP;
a4de91be
ST		 1311 break;
1312 case DTV_CODE_RATE_LP:
50727719 1313 tvp->u.data = c->code_rate_LP;
a4de91be 1314 break;
b87625f0 1315 case DTV_GUARD_INTERVAL:
50727719 1316 tvp->u.data = c->guard_interval;
b87625f0
ST		 1317 break;
1318 case DTV_TRANSMISSION_MODE:
50727719 1319 tvp->u.data = c->transmission_mode;
b87625f0 1320 break;
ef526f42 1321 case DTV_HIERARCHY:
50727719 1322 tvp->u.data = c->hierarchy;
ef526f42 1323 break;
224b6642
AP		 1324 case DTV_INTERLEAVING:
1325 tvp->u.data = c->interleaving;
1326 break;
b6e760f3
PB		 1327
1328 /* ISDB-T Support here */
1329 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1330 tvp->u.data = c->isdbt_partial_reception;
b6e760f3
PB		 1331 break;
1332 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1333 tvp->u.data = c->isdbt_sb_mode;
b6e760f3
PB		 1334 break;
1335 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1336 tvp->u.data = c->isdbt_sb_subchannel;
b6e760f3
PB		 1337 break;
1338 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1339 tvp->u.data = c->isdbt_sb_segment_idx;
b6e760f3
PB		 1340 break;
1341 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1342 tvp->u.data = c->isdbt_sb_segment_count;
b6e760f3 1343 break;
e7b7949a 1344 case DTV_ISDBT_LAYER_ENABLED:
50727719 1345 tvp->u.data = c->isdbt_layer_enabled;
e7b7949a 1346 break;
b6e760f3 1347 case DTV_ISDBT_LAYERA_FEC:
50727719 1348 tvp->u.data = c->layer[0].fec;
b6e760f3
PB		 1349 break;
1350 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1351 tvp->u.data = c->layer[0].modulation;
b6e760f3
PB		 1352 break;
1353 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1354 tvp->u.data = c->layer[0].segment_count;
b6e760f3
PB		 1355 break;
1356 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1357 tvp->u.data = c->layer[0].interleaving;
b6e760f3
PB		 1358 break;
1359 case DTV_ISDBT_LAYERB_FEC:
50727719 1360 tvp->u.data = c->layer[1].fec;
b6e760f3
PB		 1361 break;
1362 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1363 tvp->u.data = c->layer[1].modulation;
b6e760f3
PB		 1364 break;
1365 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1366 tvp->u.data = c->layer[1].segment_count;
b6e760f3
PB		 1367 break;
1368 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1369 tvp->u.data = c->layer[1].interleaving;
b6e760f3
PB		 1370 break;
1371 case DTV_ISDBT_LAYERC_FEC:
50727719 1372 tvp->u.data = c->layer[2].fec;
b6e760f3
PB		 1373 break;
1374 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1375 tvp->u.data = c->layer[2].modulation;
b6e760f3
PB		 1376 break;
1377 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1378 tvp->u.data = c->layer[2].segment_count;
b6e760f3
PB		 1379 break;
1380 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1381 tvp->u.data = c->layer[2].interleaving;
b6e760f3 1382 break;
287cefd0
EP		 1383
1384 /* Multistream support */
1385 case DTV_STREAM_ID:
1386 case DTV_DVBT2_PLP_ID_LEGACY:
1387 tvp->u.data = c->stream_id;
94d56ffa 1388 break;
ca689488
MK		 1389
1390 /* ATSC-MH */
1391 case DTV_ATSCMH_FIC_VER:
1392 tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
1393 break;
1394 case DTV_ATSCMH_PARADE_ID:
1395 tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
1396 break;
1397 case DTV_ATSCMH_NOG:
1398 tvp->u.data = fe->dtv_property_cache.atscmh_nog;
1399 break;
1400 case DTV_ATSCMH_TNOG:
1401 tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
1402 break;
1403 case DTV_ATSCMH_SGN:
1404 tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
1405 break;
1406 case DTV_ATSCMH_PRC:
1407 tvp->u.data = fe->dtv_property_cache.atscmh_prc;
1408 break;
1409 case DTV_ATSCMH_RS_FRAME_MODE:
1410 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
1411 break;
1412 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1413 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
1414 break;
1415 case DTV_ATSCMH_RS_CODE_MODE_PRI:
1416 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
1417 break;
1418 case DTV_ATSCMH_RS_CODE_MODE_SEC:
1419 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
1420 break;
1421 case DTV_ATSCMH_SCCC_BLOCK_MODE:
1422 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
1423 break;
1424 case DTV_ATSCMH_SCCC_CODE_MODE_A:
1425 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
1426 break;
1427 case DTV_ATSCMH_SCCC_CODE_MODE_B:
1428 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
1429 break;
1430 case DTV_ATSCMH_SCCC_CODE_MODE_C:
1431 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
1432 break;
1433 case DTV_ATSCMH_SCCC_CODE_MODE_D:
1434 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
1435 break;
ca689488 1436
33eebec5
AP		 1437 case DTV_LNA:
1438 tvp->u.data = c->lna;
1439 break;
1440
363429a0 1441 default:
aff8ab5c 1442 return -EINVAL;
363429a0
ST		 1443 }
1444
e23d9ae3
AO		 1445 /* Allow the frontend to override outgoing properties */
1446 if (fe->ops.get_property) {
1447 r = fe->ops.get_property(fe, tvp);
1448 if (r < 0)
1449 return r;
1450 }
1451
36bdbc3f 1452 dtv_property_dump(fe, tvp);
639544d7 1453
aff8ab5c 1454 return 0;
363429a0
ST		 1455}
1456
5bfaadde
MCC		 1457static int dtv_set_frontend(struct dvb_frontend *fe);
1458
04be0f76
MCC		 1459static bool is_dvbv3_delsys(u32 delsys)
1460{
1461 bool status;
1462
1463 status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
1464 (delsys == SYS_DVBS) || (delsys == SYS_ATSC);
1465
1466 return status;
1467}
1468
1469static int set_delivery_system(struct dvb_frontend *fe, u32 desired_system)
1470{
1471 int ncaps, i;
1472 u32 delsys = SYS_UNDEFINED;
1473 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1474 enum dvbv3_emulation_type type;
1475
f4b1952a
MCC		 1476 /*
1477 * It was reported that some old DVBv5 applications were
1478 * filling delivery_system with SYS_UNDEFINED. If this happens,
1479 * assume that the application wants to use the first supported
1480 * delivery system.
1481 */
1482 if (c->delivery_system == SYS_UNDEFINED)
1483 c->delivery_system = fe->ops.delsys[0];
1484
04be0f76
MCC		 1485 if (desired_system == SYS_UNDEFINED) {
1486 /*
1487 * A DVBv3 call doesn't know what's the desired system.
37fa53c6
MCC		 1488 * Also, DVBv3 applications don't know that ops.info->type
1489 * could be changed, and they simply dies when it doesn't
1490 * match.
1491 * So, don't change the current delivery system, as it
1492 * may be trying to do the wrong thing, like setting an
1493 * ISDB-T frontend as DVB-T. Instead, find the closest
1494 * DVBv3 system that matches the delivery system.
04be0f76
MCC		 1495 */
1496 if (is_dvbv3_delsys(c->delivery_system)) {
36bdbc3f
AP		 1497 dev_dbg(fe->dvb->device,
1498 "%s: Using delivery system to %d\n",
1499 __func__, c->delivery_system);
04be0f76
MCC		 1500 return 0;
1501 }
1502 type = dvbv3_type(c->delivery_system);
1503 switch (type) {
1504 case DVBV3_QPSK:
37fa53c6 1505 desired_system = SYS_DVBS;
04be0f76
MCC		 1506 break;
1507 case DVBV3_QAM:
37fa53c6 1508 desired_system = SYS_DVBC_ANNEX_A;
04be0f76
MCC		 1509 break;
1510 case DVBV3_ATSC:
37fa53c6 1511 desired_system = SYS_ATSC;
04be0f76
MCC		 1512 break;
1513 case DVBV3_OFDM:
37fa53c6 1514 desired_system = SYS_DVBT;
04be0f76
MCC		 1515 break;
1516 default:
36bdbc3f
AP		 1517 dev_dbg(fe->dvb->device, "%s: This frontend doesn't support DVBv3 calls\n",
1518 __func__);
04be0f76
MCC		 1519 return -EINVAL;
1520 }
3626479e
MCC		 1521 /*
1522 * Get a delivery system that is compatible with DVBv3
1523 * NOTE: in order for this to work with softwares like Kaffeine that
1524 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1525 * DVB-S, drivers that support both should put the SYS_DVBS entry
1526 * before the SYS_DVBS2, otherwise it won't switch back to DVB-S.
1527 * The real fix is that userspace applications should not use DVBv3
1528 * and not trust on calling FE_SET_FRONTEND to switch the delivery
1529 * system.
1530 */
1531 ncaps = 0;
1532 while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
1533 if (fe->ops.delsys[ncaps] == desired_system) {
1534 delsys = desired_system;
1535 break;
1536 }
1537 ncaps++;
1538 }
1539 if (delsys == SYS_UNDEFINED) {
36bdbc3f
AP		 1540 dev_dbg(fe->dvb->device, "%s: Couldn't find a delivery system that matches %d\n",
1541 __func__, desired_system);
3626479e 1542 }
04be0f76
MCC		 1543 } else {
1544 /*
37fa53c6
MCC		 1545 * This is a DVBv5 call. So, it likely knows the supported
1546 * delivery systems.
04be0f76 1547 */
37fa53c6
MCC		 1548
1549 /* Check if the desired delivery system is supported */
04be0f76
MCC		 1550 ncaps = 0;
1551 while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
1552 if (fe->ops.delsys[ncaps] == desired_system) {
1553 c->delivery_system = desired_system;
36bdbc3f
AP		 1554 dev_dbg(fe->dvb->device,
1555 "%s: Changing delivery system to %d\n",
1556 __func__, desired_system);
04be0f76
MCC		 1557 return 0;
1558 }
6c4b78cb 1559 ncaps++;
04be0f76
MCC		 1560 }
1561 type = dvbv3_type(desired_system);
1562
1563 /*
1564 * The delivery system is not supported. See if it can be
1565 * emulated.
1566 * The emulation only works if the desired system is one of the
1567 * DVBv3 delivery systems
1568 */
1569 if (!is_dvbv3_delsys(desired_system)) {
36bdbc3f
AP		 1570 dev_dbg(fe->dvb->device,
1571 "%s: can't use a DVBv3 FE_SET_FRONTEND call on this frontend\n",
1572 __func__);
04be0f76
MCC		 1573 return -EINVAL;
1574 }
1575
1576 /*
1577 * Get the last non-DVBv3 delivery system that has the same type
1578 * of the desired system
1579 */
1580 ncaps = 0;
1581 while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
1582 if ((dvbv3_type(fe->ops.delsys[ncaps]) == type) &&
1583 !is_dvbv3_delsys(fe->ops.delsys[ncaps]))
1584 delsys = fe->ops.delsys[ncaps];
1585 ncaps++;
1586 }
1587 /* There's nothing compatible with the desired delivery system */
1588 if (delsys == SYS_UNDEFINED) {
36bdbc3f
AP		 1589 dev_dbg(fe->dvb->device,
1590 "%s: Incompatible DVBv3 FE_SET_FRONTEND call for this frontend\n",
1591 __func__);
04be0f76
MCC		 1592 return -EINVAL;
1593 }
04be0f76
MCC		 1594 }
1595
3626479e
MCC		 1596 c->delivery_system = delsys;
1597
04be0f76 1598 /*
37fa53c6
MCC		 1599 * The DVBv3 or DVBv5 call is requesting a different system. So,
1600 * emulation is needed.
1601 *
224b6642 1602 * Emulate newer delivery systems like ISDBT, DVBT and DTMB
04be0f76
MCC		 1603 * for older DVBv5 applications. The emulation will try to use
1604 * the auto mode for most things, and will assume that the desired
1605 * delivery system is the last one at the ops.delsys[] array
1606 */
36bdbc3f
AP		 1607 dev_dbg(fe->dvb->device,
1608 "%s: Using delivery system %d emulated as if it were a %d\n",
1609 __func__, delsys, desired_system);
04be0f76
MCC		 1610
1611 /*
a520ca97
MCC		 1612 * For now, handles ISDB-T calls. More code may be needed here for the
1613 * other emulated stuff
04be0f76
MCC		 1614 */
1615 if (type == DVBV3_OFDM) {
a520ca97 1616 if (c->delivery_system == SYS_ISDBT) {
36bdbc3f
AP		 1617 dev_dbg(fe->dvb->device,
1618 "%s: Using defaults for SYS_ISDBT\n",
1619 __func__);
1620
a520ca97
MCC		 1621 if (!c->bandwidth_hz)
1622 c->bandwidth_hz = 6000000;
1623
1624 c->isdbt_partial_reception = 0;
1625 c->isdbt_sb_mode = 0;
1626 c->isdbt_sb_subchannel = 0;
1627 c->isdbt_sb_segment_idx = 0;
1628 c->isdbt_sb_segment_count = 0;
1629 c->isdbt_layer_enabled = 0;
1630 for (i = 0; i < 3; i++) {
1631 c->layer[i].fec = FEC_AUTO;
1632 c->layer[i].modulation = QAM_AUTO;
1633 c->layer[i].interleaving = 0;
1634 c->layer[i].segment_count = 0;
1635 }
04be0f76
MCC		 1636 }
1637 }
36bdbc3f
AP		 1638 dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n",
1639 __func__, c->delivery_system);
9474c5e6 1640
04be0f76
MCC		 1641 return 0;
1642}
1643
072ce0c5
MCC		 1644static int dtv_property_process_set(struct dvb_frontend *fe,
1645 struct dtv_property *tvp,
072ce0c5 1646 struct file *file)
6b73eeaf
ST		 1647{
1648 int r = 0;
50727719 1649 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1650
bfbf2dae 1651 /* Allow the frontend to validate incoming properties */
aff8ab5c 1652 if (fe->ops.set_property) {
bfbf2dae 1653 r = fe->ops.set_property(fe, tvp);
aff8ab5c
AO		 1654 if (r < 0)
1655 return r;
1656 }
bfbf2dae 1657
6b73eeaf 1658 switch(tvp->cmd) {
e7fee0f3 1659 case DTV_CLEAR:
5bfaadde
MCC		 1660 /*
1661 * Reset a cache of data specific to the frontend here. This does
6b73eeaf
ST		 1662 * not effect hardware.
1663 */
b6e760f3 1664 dvb_frontend_clear_cache(fe);
6b73eeaf 1665 break;
e7fee0f3 1666 case DTV_TUNE:
6b73eeaf 1667 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1668 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1669 * ioctl.
6b73eeaf 1670 */
50727719 1671 c->state = tvp->cmd;
36bdbc3f
AP		 1672 dev_dbg(fe->dvb->device, "%s: Finalised property cache\n",
1673 __func__);
d5748f10 1674
5bfaadde 1675 r = dtv_set_frontend(fe);
6b73eeaf 1676 break;
363429a0 1677 case DTV_FREQUENCY:
50727719 1678 c->frequency = tvp->u.data;
6b73eeaf 1679 break;
363429a0 1680 case DTV_MODULATION:
50727719 1681 c->modulation = tvp->u.data;
6b73eeaf 1682 break;
75b7f943 1683 case DTV_BANDWIDTH_HZ:
50727719 1684 c->bandwidth_hz = tvp->u.data;
6b73eeaf 1685 break;
363429a0 1686 case DTV_INVERSION:
50727719 1687 c->inversion = tvp->u.data;
6b73eeaf 1688 break;
363429a0 1689 case DTV_SYMBOL_RATE:
50727719 1690 c->symbol_rate = tvp->u.data;
6b73eeaf 1691 break;
363429a0 1692 case DTV_INNER_FEC:
50727719 1693 c->fec_inner = tvp->u.data;
6b73eeaf 1694 break;
363429a0 1695 case DTV_PILOT:
50727719 1696 c->pilot = tvp->u.data;
6b73eeaf 1697 break;
363429a0 1698 case DTV_ROLLOFF:
50727719 1699 c->rolloff = tvp->u.data;
6b73eeaf 1700 break;
363429a0 1701 case DTV_DELIVERY_SYSTEM:
04be0f76 1702 r = set_delivery_system(fe, tvp->u.data);
6b73eeaf 1703 break;
363429a0 1704 case DTV_VOLTAGE:
50727719 1705 c->voltage = tvp->u.data;
16ef8def 1706 r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
50727719 1707 (void *)c->voltage);
13c97bf5 1708 break;
363429a0 1709 case DTV_TONE:
50727719 1710 c->sectone = tvp->u.data;
16ef8def 1711 r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
50727719 1712 (void *)c->sectone);
13c97bf5 1713 break;
a4de91be 1714 case DTV_CODE_RATE_HP:
50727719 1715 c->code_rate_HP = tvp->u.data;
a4de91be
ST		 1716 break;
1717 case DTV_CODE_RATE_LP:
50727719 1718 c->code_rate_LP = tvp->u.data;
a4de91be 1719 break;
b87625f0 1720 case DTV_GUARD_INTERVAL:
50727719 1721 c->guard_interval = tvp->u.data;
b87625f0
ST		 1722 break;
1723 case DTV_TRANSMISSION_MODE:
50727719 1724 c->transmission_mode = tvp->u.data;
b87625f0 1725 break;
ef526f42 1726 case DTV_HIERARCHY:
50727719 1727 c->hierarchy = tvp->u.data;
ef526f42 1728 break;
224b6642
AP		 1729 case DTV_INTERLEAVING:
1730 c->interleaving = tvp->u.data;
1731 break;
b6e760f3
PB		 1732
1733 /* ISDB-T Support here */
1734 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1735 c->isdbt_partial_reception = tvp->u.data;
b6e760f3
PB		 1736 break;
1737 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1738 c->isdbt_sb_mode = tvp->u.data;
b6e760f3
PB		 1739 break;
1740 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1741 c->isdbt_sb_subchannel = tvp->u.data;
b6e760f3
PB		 1742 break;
1743 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1744 c->isdbt_sb_segment_idx = tvp->u.data;
b6e760f3
PB		 1745 break;
1746 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1747 c->isdbt_sb_segment_count = tvp->u.data;
b6e760f3 1748 break;
e7b7949a 1749 case DTV_ISDBT_LAYER_ENABLED:
50727719 1750 c->isdbt_layer_enabled = tvp->u.data;
e7b7949a 1751 break;
b6e760f3 1752 case DTV_ISDBT_LAYERA_FEC:
50727719 1753 c->layer[0].fec = tvp->u.data;
b6e760f3
PB		 1754 break;
1755 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1756 c->layer[0].modulation = tvp->u.data;
b6e760f3
PB		 1757 break;
1758 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1759 c->layer[0].segment_count = tvp->u.data;
b6e760f3
PB		 1760 break;
1761 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1762 c->layer[0].interleaving = tvp->u.data;
b6e760f3
PB		 1763 break;
1764 case DTV_ISDBT_LAYERB_FEC:
50727719 1765 c->layer[1].fec = tvp->u.data;
b6e760f3
PB		 1766 break;
1767 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1768 c->layer[1].modulation = tvp->u.data;
b6e760f3
PB		 1769 break;
1770 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1771 c->layer[1].segment_count = tvp->u.data;
b6e760f3
PB		 1772 break;
1773 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1774 c->layer[1].interleaving = tvp->u.data;
b6e760f3
PB		 1775 break;
1776 case DTV_ISDBT_LAYERC_FEC:
50727719 1777 c->layer[2].fec = tvp->u.data;
b6e760f3
PB		 1778 break;
1779 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1780 c->layer[2].modulation = tvp->u.data;
b6e760f3
PB		 1781 break;
1782 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1783 c->layer[2].segment_count = tvp->u.data;
b6e760f3
PB		 1784 break;
1785 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1786 c->layer[2].interleaving = tvp->u.data;
b6e760f3 1787 break;
287cefd0
EP		 1788
1789 /* Multistream support */
1790 case DTV_STREAM_ID:
1791 case DTV_DVBT2_PLP_ID_LEGACY:
1792 c->stream_id = tvp->u.data;
98293ef3 1793 break;
ca689488
MK		 1794
1795 /* ATSC-MH */
1796 case DTV_ATSCMH_PARADE_ID:
1797 fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
1798 break;
1799 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1800 fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
1801 break;
1802
33eebec5
AP		 1803 case DTV_LNA:
1804 c->lna = tvp->u.data;
1805 if (fe->ops.set_lna)
1806 r = fe->ops.set_lna(fe);
1807 break;
1808
363429a0 1809 default:
aff8ab5c 1810 return -EINVAL;
6b73eeaf
ST		 1811 }
1812
13c97bf5 1813 return r;
6b73eeaf
ST		 1814}
1815
16ef8def 1816static int dvb_frontend_ioctl(struct file *file,
1da177e4
LT		 1817 unsigned int cmd, void *parg)
1818{
1819 struct dvb_device *dvbdev = file->private_data;
1820 struct dvb_frontend *fe = dvbdev->priv;
50727719 1821 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 1822 struct dvb_frontend_private *fepriv = fe->frontend_priv;
177ffe50 1823 int err = -ENOTTY;
1da177e4 1824
36bdbc3f 1825 dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
e36309f5 1826 if (fepriv->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 1827 return -ENODEV;
1828
1829 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1830 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1831 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1832 return -EPERM;
1833
1834 if (down_interruptible (&fepriv->sem))
1835 return -ERESTARTSYS;
1836
13c97bf5 1837 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
16ef8def 1838 err = dvb_frontend_ioctl_properties(file, cmd, parg);
4dd88bec 1839 else {
50727719 1840 c->state = DTV_UNDEFINED;
16ef8def 1841 err = dvb_frontend_ioctl_legacy(file, cmd, parg);
4dd88bec 1842 }
13c97bf5
ST		 1843
1844 up(&fepriv->sem);
1845 return err;
1846}
1847
16ef8def 1848static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1849 unsigned int cmd, void *parg)
1850{
1851 struct dvb_device *dvbdev = file->private_data;
1852 struct dvb_frontend *fe = dvbdev->priv;
51dcb19a 1853 struct dvb_frontend_private *fepriv = fe->frontend_priv;
50727719 1854 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
e6f9ec86 1855 int err = 0;
e7fee0f3
ST		 1856
1857 struct dtv_properties *tvps = NULL;
1858 struct dtv_property *tvp = NULL;
1859 int i;
13c97bf5 1860
36bdbc3f 1861 dev_dbg(fe->dvb->device, "%s:\n", __func__);
13c97bf5 1862
6b73eeaf 1863 if(cmd == FE_SET_PROPERTY) {
e7fee0f3 1864 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1865
36bdbc3f
AP		 1866 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
1867 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 1868
1869 /* Put an arbitrary limit on the number of messages that can
1870 * be sent at once */
6068f506 1871 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 1872 return -EINVAL;
1873
6e3924aa 1874 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
e7fee0f3
ST		 1875 if (!tvp) {
1876 err = -ENOMEM;
1877 goto out;
6b73eeaf
ST		 1878 }
1879
e7fee0f3
ST		 1880 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1881 err = -EFAULT;
1882 goto out;
1883 }
1884
d48cb402 1885 for (i = 0; i < tvps->num; i++) {
aff8ab5c
AO		 1886 err = dtv_property_process_set(fe, tvp + i, file);
1887 if (err < 0)
1888 goto out;
1889 (tvp + i)->result = err;
d48cb402 1890 }
e7fee0f3 1891
50727719 1892 if (c->state == DTV_TUNE)
36bdbc3f 1893 dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
bfbf2dae 1894
363429a0
ST		 1895 } else
1896 if(cmd == FE_GET_PROPERTY) {
363429a0
ST		 1897 tvps = (struct dtv_properties __user *)parg;
1898
36bdbc3f
AP		 1899 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
1900 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 1901
1902 /* Put an arbitrary limit on the number of messages that can
1903 * be sent at once */
6068f506 1904 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 1905 return -EINVAL;
1906
6e3924aa 1907 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
363429a0
ST		 1908 if (!tvp) {
1909 err = -ENOMEM;
1910 goto out;
1911 }
1912
1913 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1914 err = -EFAULT;
1915 goto out;
1916 }
1917
a689e365
MCC		 1918 /*
1919 * Fills the cache out struct with the cache contents, plus
51dcb19a
MCC		 1920 * the data retrieved from get_frontend, if the frontend
1921 * is not idle. Otherwise, returns the cached content
a689e365 1922 */
51dcb19a
MCC		 1923 if (fepriv->state != FESTATE_IDLE) {
1924 err = dtv_get_frontend(fe, NULL);
1925 if (err < 0)
1926 goto out;
1927 }
d48cb402 1928 for (i = 0; i < tvps->num; i++) {
7c61d80a 1929 err = dtv_property_process_get(fe, c, tvp + i, file);
aff8ab5c
AO		 1930 if (err < 0)
1931 goto out;
1932 (tvp + i)->result = err;
d48cb402 1933 }
363429a0
ST		 1934
1935 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1936 err = -EFAULT;
1937 goto out;
1938 }
1939
363429a0 1940 } else
177ffe50 1941 err = -ENOTTY;
363429a0 1942
e7fee0f3
ST		 1943out:
1944 kfree(tvp);
13c97bf5
ST		 1945 return err;
1946}
1947
5bfaadde 1948static int dtv_set_frontend(struct dvb_frontend *fe)
9682cea2 1949{
9682cea2
MCC		 1950 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1951 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1952 struct dvb_frontend_tune_settings fetunesettings;
5bfaadde 1953 u32 rolloff = 0;
9682cea2 1954
5bfaadde
MCC		 1955 if (dvb_frontend_check_parameters(fe) < 0)
1956 return -EINVAL;
9682cea2 1957
556a0442
CR		 1958 /*
1959 * Initialize output parameters to match the values given by
1960 * the user. FE_SET_FRONTEND triggers an initial frontend event
1961 * with status = 0, which copies output parameters to userspace.
1962 */
1963 dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
1964
5bfaadde
MCC		 1965 /*
1966 * Be sure that the bandwidth will be filled for all
1967 * non-satellite systems, as tuners need to know what
1968 * low pass/Nyquist half filter should be applied, in
1969 * order to avoid inter-channel noise.
1970 *
1971 * ISDB-T and DVB-T/T2 already sets bandwidth.
1972 * ATSC and DVB-C don't set, so, the core should fill it.
1973 *
1974 * On DVB-C Annex A and C, the bandwidth is a function of
1975 * the roll-off and symbol rate. Annex B defines different
1976 * roll-off factors depending on the modulation. Fortunately,
1977 * Annex B is only used with 6MHz, so there's no need to
1978 * calculate it.
1979 *
1980 * While not officially supported, a side effect of handling it at
1981 * the cache level is that a program could retrieve the bandwidth
1982 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
1983 */
1984 switch (c->delivery_system) {
1985 case SYS_ATSC:
1986 case SYS_DVBC_ANNEX_B:
1987 c->bandwidth_hz = 6000000;
1988 break;
1989 case SYS_DVBC_ANNEX_A:
1990 rolloff = 115;
1991 break;
1992 case SYS_DVBC_ANNEX_C:
1993 rolloff = 113;
1994 break;
1995 default:
1996 break;
1997 }
1998 if (rolloff)
1999 c->bandwidth_hz = (c->symbol_rate * rolloff) / 100;
9682cea2
MCC		 2000
2001 /* force auto frequency inversion if requested */
5bfaadde 2002 if (dvb_force_auto_inversion)
9682cea2 2003 c->inversion = INVERSION_AUTO;
5bfaadde
MCC		 2004
2005 /*
2006 * without hierarchical coding code_rate_LP is irrelevant,
2007 * so we tolerate the otherwise invalid FEC_NONE setting
2008 */
2009 if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
2010 c->code_rate_LP = FEC_AUTO;
9682cea2
MCC		 2011
2012 /* get frontend-specific tuning settings */
5bfaadde 2013 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
9682cea2
MCC		 2014 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
2015 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
2016 fepriv->max_drift = fetunesettings.max_drift;
2017 fepriv->step_size = fetunesettings.step_size;
2018 } else {
2019 /* default values */
5bfaadde 2020 switch (c->delivery_system) {
910a5f2e
MCC		 2021 case SYS_DVBS:
2022 case SYS_DVBS2:
2023 case SYS_ISDBS:
2024 case SYS_TURBO:
5bfaadde
MCC		 2025 case SYS_DVBC_ANNEX_A:
2026 case SYS_DVBC_ANNEX_C:
2027 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2028 fepriv->step_size = c->symbol_rate / 16000;
2029 fepriv->max_drift = c->symbol_rate / 2000;
2030 break;
5bfaadde
MCC		 2031 case SYS_DVBT:
2032 case SYS_DVBT2:
2033 case SYS_ISDBT:
224b6642 2034 case SYS_DTMB:
5bfaadde 2035 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2036 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
2037 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
2038 break;
5bfaadde
MCC		 2039 default:
2040 /*
2041 * FIXME: This sounds wrong! if freqency_stepsize is
2042 * defined by the frontend, why not use it???
2043 */
2044 fepriv->min_delay = HZ / 20;
2045 fepriv->step_size = 0; /* no zigzag */
9682cea2
MCC		 2046 fepriv->max_drift = 0;
2047 break;
2048 }
2049 }
2050 if (dvb_override_tune_delay > 0)
2051 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
2052
2053 fepriv->state = FESTATE_RETUNE;
2054
2055 /* Request the search algorithm to search */
2056 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
2057
2058 dvb_frontend_clear_events(fe);
2059 dvb_frontend_add_event(fe, 0);
2060 dvb_frontend_wakeup(fe);
2061 fepriv->status = 0;
2062
2063 return 0;
2064}
2065
2066
16ef8def 2067static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5
ST		 2068 unsigned int cmd, void *parg)
2069{
2070 struct dvb_device *dvbdev = file->private_data;
2071 struct dvb_frontend *fe = dvbdev->priv;
2072 struct dvb_frontend_private *fepriv = fe->frontend_priv;
5bfaadde 2073 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
177ffe50 2074 int err = -ENOTTY;
13c97bf5 2075
1da177e4
LT		 2076 switch (cmd) {
2077 case FE_GET_INFO: {
0c53c70f 2078 struct dvb_frontend_info* info = parg;
9474c5e6 2079
dea74869 2080 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
2030c032 2081 dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4 2082
5bfaadde
MCC		 2083 /*
2084 * Associate the 4 delivery systems supported by DVBv3
2085 * API with their DVBv5 counterpart. For the other standards,
2086 * use the closest type, assuming that it would hopefully
2087 * work with a DVBv3 application.
2088 * It should be noticed that, on multi-frontend devices with
2089 * different types (terrestrial and cable, for example),
2090 * a pure DVBv3 application won't be able to use all delivery
2091 * systems. Yet, changing the DVBv5 cache to the other delivery
2092 * system should be enough for making it work.
2093 */
2094 switch (dvbv3_type(c->delivery_system)) {
2095 case DVBV3_QPSK:
9474c5e6 2096 info->type = FE_QPSK;
5bfaadde
MCC		 2097 break;
2098 case DVBV3_ATSC:
9474c5e6 2099 info->type = FE_ATSC;
5bfaadde
MCC		 2100 break;
2101 case DVBV3_QAM:
9474c5e6 2102 info->type = FE_QAM;
5bfaadde
MCC		 2103 break;
2104 case DVBV3_OFDM:
9474c5e6 2105 info->type = FE_OFDM;
5bfaadde
MCC		 2106 break;
2107 default:
36bdbc3f
AP		 2108 dev_err(fe->dvb->device,
2109 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
2110 __func__, c->delivery_system);
5bfaadde
MCC		 2111 fe->ops.info.type = FE_OFDM;
2112 }
36bdbc3f
AP		 2113 dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
2114 __func__, c->delivery_system, fe->ops.info.type);
5bfaadde 2115
1da177e4
LT		 2116 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
2117 * do it, it is done for it. */
2118 info->caps |= FE_CAN_INVERSION_AUTO;
2119 err = 0;
2120 break;
2121 }
2122
6757ccc5
PB		 2123 case FE_READ_STATUS: {
2124 fe_status_t* status = parg;
2125
25985edc 2126 /* if retune was requested but hasn't occurred yet, prevent
6757ccc5 2127 * that user get signal state from previous tuning */
01886255
JG		 2128 if (fepriv->state == FESTATE_RETUNE ||
2129 fepriv->state == FESTATE_ERROR) {
6757ccc5
PB		 2130 err=0;
2131 *status = 0;
2132 break;
2133 }
2134
dea74869
PB		 2135 if (fe->ops.read_status)
2136 err = fe->ops.read_status(fe, status);
1da177e4 2137 break;
6757ccc5 2138 }
48caa6f1 2139
1da177e4 2140 case FE_READ_BER:
48caa6f1
AP		 2141 if (fe->ops.read_ber) {
2142 if (fepriv->thread)
2143 err = fe->ops.read_ber(fe, (__u32 *) parg);
2144 else
2145 err = -EAGAIN;
2146 }
1da177e4
LT		 2147 break;
2148
2149 case FE_READ_SIGNAL_STRENGTH:
48caa6f1
AP		 2150 if (fe->ops.read_signal_strength) {
2151 if (fepriv->thread)
2152 err = fe->ops.read_signal_strength(fe, (__u16 *) parg);
2153 else
2154 err = -EAGAIN;
2155 }
1da177e4
LT		 2156 break;
2157
2158 case FE_READ_SNR:
48caa6f1
AP		 2159 if (fe->ops.read_snr) {
2160 if (fepriv->thread)
2161 err = fe->ops.read_snr(fe, (__u16 *) parg);
2162 else
2163 err = -EAGAIN;
2164 }
1da177e4
LT		 2165 break;
2166
2167 case FE_READ_UNCORRECTED_BLOCKS:
48caa6f1
AP		 2168 if (fe->ops.read_ucblocks) {
2169 if (fepriv->thread)
2170 err = fe->ops.read_ucblocks(fe, (__u32 *) parg);
2171 else
2172 err = -EAGAIN;
2173 }
1da177e4
LT		 2174 break;
2175
1da177e4 2176 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 2177 if (fe->ops.diseqc_reset_overload) {
2178 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 2179 fepriv->state = FESTATE_DISEQC;
2180 fepriv->status = 0;
2181 }
2182 break;
2183
2184 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 2185 if (fe->ops.diseqc_send_master_cmd) {
2186 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 2187 fepriv->state = FESTATE_DISEQC;
2188 fepriv->status = 0;
2189 }
2190 break;
2191
2192 case FE_DISEQC_SEND_BURST:
dea74869
PB		 2193 if (fe->ops.diseqc_send_burst) {
2194 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 2195 fepriv->state = FESTATE_DISEQC;
2196 fepriv->status = 0;
2197 }
2198 break;
2199
2200 case FE_SET_TONE:
dea74869
PB		 2201 if (fe->ops.set_tone) {
2202 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 2203 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 2204 fepriv->state = FESTATE_DISEQC;
2205 fepriv->status = 0;
2206 }
2207 break;
2208
2209 case FE_SET_VOLTAGE:
dea74869
PB		 2210 if (fe->ops.set_voltage) {
2211 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 2212 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 2213 fepriv->state = FESTATE_DISEQC;
2214 fepriv->status = 0;
2215 }
2216 break;
2217
2218 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 2219 if (fe->ops.dishnetwork_send_legacy_command) {
2220 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 2221 fepriv->state = FESTATE_DISEQC;
2222 fepriv->status = 0;
dea74869 2223 } else if (fe->ops.set_voltage) {
83b75b04
N		 2224 /*
2225 * NOTE: This is a fallback condition. Some frontends
2226 * (stv0299 for instance) take longer than 8msec to
2227 * respond to a set_voltage command. Those switches
2228 * need custom routines to switch properly. For all
2030c032 2229 * other frontends, the following should work ok.
83b75b04
N		 2230 * Dish network legacy switches (as used by Dish500)
2231 * are controlled by sending 9-bit command words
2232 * spaced 8msec apart.
25985edc 2233 * the actual command word is switch/port dependent
83b75b04
N		 2234 * so it is up to the userspace application to send
2235 * the right command.
2236 * The command must always start with a '0' after
2237 * initialization, so parg is 8 bits and does not
2238 * include the initialization or start bit
2239 */
c6eb8eaf 2240 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 2241 struct timeval nexttime;
2242 struct timeval tv[10];
2243 int i;
2244 u8 last = 1;
2245 if (dvb_frontend_debug)
c6eb8eaf 2246 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 2247 do_gettimeofday(&nexttime);
2248 if (dvb_frontend_debug)
2249 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
2250 /* before sending a command, initialize by sending
2251 * a 32ms 18V to the switch
2252 */
dea74869 2253 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 2254 dvb_frontend_sleep_until(&nexttime, 32000);
2255
2256 for (i = 0; i < 9; i++) {
2257 if (dvb_frontend_debug)
2258 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 2259 if ((swcmd & 0x01) != last) {
83b75b04 2260 /* set voltage to (last ? 13V : 18V) */
dea74869 2261 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 2262 last = (last) ? 0 : 1;
2263 }
c6eb8eaf 2264 swcmd = swcmd >> 1;
83b75b04
N		 2265 if (i != 8)
2266 dvb_frontend_sleep_until(&nexttime, 8000);
2267 }
2268 if (dvb_frontend_debug) {
2269 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 2270 __func__, fe->dvb->num);
83b75b04
N		 2271 for (i = 1; i < 10; i++)
2272 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
2273 }
2274 err = 0;
2275 fepriv->state = FESTATE_DISEQC;
2276 fepriv->status = 0;
1da177e4
LT		 2277 }
2278 break;
2279
2280 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 2281 if (fe->ops.diseqc_recv_slave_reply)
2282 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 2283 break;
2284
2285 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 2286 if (fe->ops.enable_high_lnb_voltage)
2287 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 2288 break;
2289
9682cea2 2290 case FE_SET_FRONTEND:
04be0f76
MCC		 2291 err = set_delivery_system(fe, SYS_UNDEFINED);
2292 if (err)
2293 break;
2294
e399ce77 2295 err = dtv_property_cache_sync(fe, c, parg);
5bfaadde
MCC		 2296 if (err)
2297 break;
2298 err = dtv_set_frontend(fe);
1da177e4 2299 break;
1da177e4
LT		 2300 case FE_GET_EVENT:
2301 err = dvb_frontend_get_event (fe, parg, file->f_flags);
2302 break;
2303
2304 case FE_GET_FRONTEND:
e399ce77 2305 err = dtv_get_frontend(fe, parg);
1da177e4 2306 break;
36cb557a
AQ		 2307
2308 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 2309 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 2310 err = 0;
36cb557a 2311 break;
c2c1b415 2312 }
1da177e4 2313
1da177e4
LT		 2314 return err;
2315}
2316
6b73eeaf 2317
1da177e4
LT		 2318static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
2319{
2320 struct dvb_device *dvbdev = file->private_data;
2321 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2322 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 2323
36bdbc3f 2324 dev_dbg_ratelimited(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 2325
2326 poll_wait (file, &fepriv->events.wait_queue, wait);
2327
2328 if (fepriv->events.eventw != fepriv->events.eventr)
2329 return (POLLIN | POLLRDNORM | POLLPRI);
2330
2331 return 0;
2332}
2333
2334static int dvb_frontend_open(struct inode *inode, struct file *file)
2335{
2336 struct dvb_device *dvbdev = file->private_data;
2337 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2338 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 2339 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 2340 int ret;
2341
36bdbc3f 2342 dev_dbg(fe->dvb->device, "%s:\n", __func__);
e36309f5
MC		 2343 if (fepriv->exit == DVB_FE_DEVICE_REMOVED)
2344 return -ENODEV;
1da177e4 2345
59b1842d
DB		 2346 if (adapter->mfe_shared) {
2347 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 2348
2349 if (adapter->mfe_dvbdev == NULL)
2350 adapter->mfe_dvbdev = dvbdev;
2351
2352 else if (adapter->mfe_dvbdev != dvbdev) {
2353 struct dvb_device
2354 *mfedev = adapter->mfe_dvbdev;
2355 struct dvb_frontend
2356 *mfe = mfedev->priv;
2357 struct dvb_frontend_private
2358 *mfepriv = mfe->frontend_priv;
2359 int mferetry = (dvb_mfe_wait_time << 1);
2360
2361 mutex_unlock (&adapter->mfe_lock);
2362 while (mferetry-- && (mfedev->users != -1 ||
2363 mfepriv->thread != NULL)) {
2364 if(msleep_interruptible(500)) {
2365 if(signal_pending(current))
2366 return -EINTR;
59b1842d 2367 }
6594690b
DB		 2368 }
2369
2370 mutex_lock (&adapter->mfe_lock);
2371 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 2372 mfedev = adapter->mfe_dvbdev;
2373 mfe = mfedev->priv;
2374 mfepriv = mfe->frontend_priv;
6594690b
DB		 2375 if (mfedev->users != -1 ||
2376 mfepriv->thread != NULL) {
2377 mutex_unlock (&adapter->mfe_lock);
2378 return -EBUSY;
59b1842d 2379 }
6594690b 2380 adapter->mfe_dvbdev = dvbdev;
59b1842d 2381 }
59b1842d
DB		 2382 }
2383 }
2384
48136e1e
OE		 2385 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
2386 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 2387 goto err0;
2d196931
DH		 2388
2389 /* If we took control of the bus, we need to force
2390 reinitialization. This is because many ts_bus_ctrl()
2391 functions strobe the RESET pin on the demod, and if the
2392 frontend thread already exists then the dvb_init() routine
2393 won't get called (which is what usually does initial
2394 register configuration). */
2395 fepriv->reinitialise = 1;
ba7e6f3e
ST		 2396 }
2397
48136e1e
OE		 2398 if ((ret = dvb_generic_open (inode, file)) < 0)
2399 goto err1;
04c56d0e 2400
48136e1e 2401 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 2402 /* normal tune mode when opened R/W */
2403 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
2404 fepriv->tone = -1;
2405 fepriv->voltage = -1;
2406
1da177e4
LT		 2407 ret = dvb_frontend_start (fe);
2408 if (ret)
48136e1e 2409 goto err2;
1da177e4
LT		 2410
2411 /* empty event queue */
2412 fepriv->events.eventr = fepriv->events.eventw = 0;
2413 }
2414
59b1842d
DB		 2415 if (adapter->mfe_shared)
2416 mutex_unlock (&adapter->mfe_lock);
1da177e4 2417 return ret;
48136e1e
OE		 2418
2419err2:
2420 dvb_generic_release(inode, file);
2421err1:
2422 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
2423 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 2424err0:
2425 if (adapter->mfe_shared)
2426 mutex_unlock (&adapter->mfe_lock);
48136e1e 2427 return ret;
1da177e4
LT		 2428}
2429
2430static int dvb_frontend_release(struct inode *inode, struct file *file)
2431{
2432 struct dvb_device *dvbdev = file->private_data;
2433 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2434 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 2435 int ret;
1da177e4 2436
36bdbc3f 2437 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2438
b9d5efcc 2439 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1da177e4 2440 fepriv->release_jiffies = jiffies;
b9d5efcc
AO		 2441 mb();
2442 }
1da177e4 2443
ca5be9cd
MR		 2444 ret = dvb_generic_release (inode, file);
2445
48136e1e 2446 if (dvbdev->users == -1) {
b9d5efcc 2447 wake_up(&fepriv->wait_queue);
e36309f5 2448 if (fepriv->exit != DVB_FE_NO_EXIT) {
48136e1e
OE		 2449 fops_put(file->f_op);
2450 file->f_op = NULL;
2451 wake_up(&dvbdev->wait_queue);
2452 }
2453 if (fe->ops.ts_bus_ctrl)
2454 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 2455 }
48136e1e 2456
ca5be9cd 2457 return ret;
1da177e4
LT		 2458}
2459
784e29d2 2460static const struct file_operations dvb_frontend_fops = {
1da177e4 2461 .owner = THIS_MODULE,
16ef8def 2462 .unlocked_ioctl = dvb_generic_ioctl,
1da177e4
LT		 2463 .poll = dvb_frontend_poll,
2464 .open = dvb_frontend_open,
6038f373
AB		 2465 .release = dvb_frontend_release,
2466 .llseek = noop_llseek,
1da177e4
LT		 2467};
2468
06bae122
AP		 2469int dvb_frontend_suspend(struct dvb_frontend *fe)
2470{
2471 int ret = 0;
2472
2473 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2474 fe->id);
2475
2476 if (fe->ops.tuner_ops.sleep)
2477 ret = fe->ops.tuner_ops.sleep(fe);
2478
2479 if (fe->ops.sleep)
2480 ret = fe->ops.sleep(fe);
2481
2482 return ret;
2483}
2484EXPORT_SYMBOL(dvb_frontend_suspend);
2485
2486int dvb_frontend_resume(struct dvb_frontend *fe)
2487{
2488 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2489 int ret = 0;
2490
2491 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2492 fe->id);
2493
2494 if (fe->ops.init)
2495 ret = fe->ops.init(fe);
2496
2497 if (fe->ops.tuner_ops.init)
2498 ret = fe->ops.tuner_ops.init(fe);
2499
2500 fepriv->state = FESTATE_RETUNE;
2501 dvb_frontend_wakeup(fe);
2502
2503 return ret;
2504}
2505EXPORT_SYMBOL(dvb_frontend_resume);
2506
1da177e4
LT		 2507int dvb_register_frontend(struct dvb_adapter* dvb,
2508 struct dvb_frontend* fe)
2509{
2510 struct dvb_frontend_private *fepriv;
2511 static const struct dvb_device dvbdev_template = {
2512 .users = ~0,
2513 .writers = 1,
2514 .readers = (~0)-1,
2515 .fops = &dvb_frontend_fops,
2516 .kernel_ioctl = dvb_frontend_ioctl
2517 };
2518
36bdbc3f 2519 dev_dbg(dvb->device, "%s:\n", __func__);
1da177e4 2520
3593cab5 2521 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 2522 return -ERESTARTSYS;
2523
7408187d 2524 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 2525 if (fe->frontend_priv == NULL) {
3593cab5 2526 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2527 return -ENOMEM;
2528 }
0c53c70f 2529 fepriv = fe->frontend_priv;
1da177e4 2530
a0a4714c 2531 sema_init(&fepriv->sem, 1);
1da177e4
LT		 2532 init_waitqueue_head (&fepriv->wait_queue);
2533 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 2534 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 2535 fe->dvb = dvb;
2536 fepriv->inversion = INVERSION_OFF;
2537
36bdbc3f
AP		 2538 dev_info(fe->dvb->device,
2539 "DVB: registering adapter %i frontend %i (%s)...\n",
2540 fe->dvb->num, fe->id, fe->ops.info.name);
1da177e4
LT		 2541
2542 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
2543 fe, DVB_DEVICE_FRONTEND);
2544
5bfaadde
MCC		 2545 /*
2546 * Initialize the cache to the proper values according with the
2547 * first supported delivery system (ops->delsys[0])
2548 */
240ab508
MCC		 2549
2550 fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
5bfaadde
MCC		 2551 dvb_frontend_clear_cache(fe);
2552
3593cab5 2553 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2554 return 0;
2555}
2556EXPORT_SYMBOL(dvb_register_frontend);
2557
2558int dvb_unregister_frontend(struct dvb_frontend* fe)
2559{
0c53c70f 2560 struct dvb_frontend_private *fepriv = fe->frontend_priv;
36bdbc3f 2561 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2562
57861b43 2563 mutex_lock(&frontend_mutex);
ca5be9cd 2564 dvb_frontend_stop (fe);
57861b43
MR		 2565 mutex_unlock(&frontend_mutex);
2566
2567 if (fepriv->dvbdev->users < -1)
2568 wait_event(fepriv->dvbdev->wait_queue,
2569 fepriv->dvbdev->users==-1);
2570
3593cab5 2571 mutex_lock(&frontend_mutex);
1da177e4 2572 dvb_unregister_device (fepriv->dvbdev);
d9955060 2573
1da177e4
LT		 2574 /* fe is invalid now */
2575 kfree(fepriv);
3593cab5 2576 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2577 return 0;
2578}
2579EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 2580
149ef72d 2581#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 2582void dvb_frontend_detach(struct dvb_frontend* fe)
2583{
2584 void *ptr;
2585
2586 if (fe->ops.release_sec) {
2587 fe->ops.release_sec(fe);
2588 symbol_put_addr(fe->ops.release_sec);
2589 }
2590 if (fe->ops.tuner_ops.release) {
2591 fe->ops.tuner_ops.release(fe);
2592 symbol_put_addr(fe->ops.tuner_ops.release);
2593 }
2426a27e
MK		 2594 if (fe->ops.analog_ops.release) {
2595 fe->ops.analog_ops.release(fe);
2596 symbol_put_addr(fe->ops.analog_ops.release);
2597 }
f52a838b
AQ		 2598 ptr = (void*)fe->ops.release;
2599 if (ptr) {
2600 fe->ops.release(fe);
2601 symbol_put_addr(ptr);
2602 }
2603}
2604#else
2605void dvb_frontend_detach(struct dvb_frontend* fe)
2606{
2607 if (fe->ops.release_sec)
2608 fe->ops.release_sec(fe);
2609 if (fe->ops.tuner_ops.release)
2610 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 2611 if (fe->ops.analog_ops.release)
2612 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 2613 if (fe->ops.release)
2614 fe->ops.release(fe);
2615}
2616#endif
2617EXPORT_SYMBOL(dvb_frontend_detach);
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