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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>
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;
135f9be9 137#endif
1da177e4
LT		 138};
139
86f40cc3 140static void dvb_frontend_wakeup(struct dvb_frontend *fe);
a689e365 141static int dtv_get_frontend(struct dvb_frontend *fe,
2ea9a08d 142 struct dtv_frontend_properties *c,
a689e365 143 struct dvb_frontend_parameters *p_out);
2ea9a08d
MCC		 144static int
145dtv_property_legacy_params_sync(struct dvb_frontend *fe,
146 const struct dtv_frontend_properties *c,
147 struct dvb_frontend_parameters *p);
a689e365
MCC		 148
149static bool has_get_frontend(struct dvb_frontend *fe)
150{
c065f5b4 151 return fe->ops.get_frontend != NULL;
a689e365 152}
1da177e4 153
5bfaadde
MCC		 154/*
155 * Due to DVBv3 API calls, a delivery system should be mapped into one of
156 * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
157 * otherwise, a DVBv3 call will fail.
158 */
159enum dvbv3_emulation_type {
160 DVBV3_UNKNOWN,
161 DVBV3_QPSK,
162 DVBV3_QAM,
163 DVBV3_OFDM,
164 DVBV3_ATSC,
165};
166
167static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system)
168{
169 switch (delivery_system) {
170 case SYS_DVBC_ANNEX_A:
171 case SYS_DVBC_ANNEX_C:
172 return DVBV3_QAM;
173 case SYS_DVBS:
174 case SYS_DVBS2:
175 case SYS_TURBO:
176 case SYS_ISDBS:
177 case SYS_DSS:
178 return DVBV3_QPSK;
179 case SYS_DVBT:
180 case SYS_DVBT2:
181 case SYS_ISDBT:
224b6642 182 case SYS_DTMB:
5bfaadde
MCC		 183 return DVBV3_OFDM;
184 case SYS_ATSC:
ca689488 185 case SYS_ATSCMH:
5bfaadde
MCC		 186 case SYS_DVBC_ANNEX_B:
187 return DVBV3_ATSC;
188 case SYS_UNDEFINED:
189 case SYS_ISDBC:
190 case SYS_DVBH:
191 case SYS_DAB:
5bfaadde
MCC		 192 default:
193 /*
194 * Doesn't know how to emulate those types and/or
195 * there's no frontend driver from this type yet
196 * with some emulation code, so, we're not sure yet how
197 * to handle them, or they're not compatible with a DVBv3 call.
198 */
199 return DVBV3_UNKNOWN;
200 }
201}
202
0df289a2
MCC		 203static void dvb_frontend_add_event(struct dvb_frontend *fe,
204 enum fe_status status)
1da177e4 205{
0c53c70f 206 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2ea9a08d 207 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1da177e4
LT		 208 struct dvb_fe_events *events = &fepriv->events;
209 struct dvb_frontend_event *e;
210 int wp;
211
36bdbc3f 212 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 213
a689e365 214 if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
2ea9a08d 215 dtv_get_frontend(fe, c, &fepriv->parameters_out);
1da177e4 216
77b1e2fb 217 mutex_lock(&events->mtx);
1da177e4 218
77b1e2fb 219 wp = (events->eventw + 1) % MAX_EVENT;
1da177e4
LT		 220 if (wp == events->eventr) {
221 events->overflow = 1;
222 events->eventr = (events->eventr + 1) % MAX_EVENT;
223 }
224
225 e = &events->events[events->eventw];
77b1e2fb 226 e->status = status;
a5959dbe 227 e->parameters = fepriv->parameters_out;
1da177e4
LT		 228
229 events->eventw = wp;
230
03b76123 231 mutex_unlock(&events->mtx);
1da177e4 232
1da177e4
LT		 233 wake_up_interruptible (&events->wait_queue);
234}
235
236static int dvb_frontend_get_event(struct dvb_frontend *fe,
237 struct dvb_frontend_event *event, int flags)
238{
0c53c70f 239 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 240 struct dvb_fe_events *events = &fepriv->events;
241
36bdbc3f 242 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 243
244 if (events->overflow) {
245 events->overflow = 0;
246 return -EOVERFLOW;
247 }
248
249 if (events->eventw == events->eventr) {
250 int ret;
251
252 if (flags & O_NONBLOCK)
253 return -EWOULDBLOCK;
254
255 up(&fepriv->sem);
256
257 ret = wait_event_interruptible (events->wait_queue,
258 events->eventw != events->eventr);
259
260 if (down_interruptible (&fepriv->sem))
261 return -ERESTARTSYS;
262
263 if (ret < 0)
264 return ret;
265 }
266
77b1e2fb
AO		 267 mutex_lock(&events->mtx);
268 *event = events->events[events->eventr];
1da177e4 269 events->eventr = (events->eventr + 1) % MAX_EVENT;
03b76123 270 mutex_unlock(&events->mtx);
1da177e4
LT		 271
272 return 0;
273}
274
20640bea
AO		 275static void dvb_frontend_clear_events(struct dvb_frontend *fe)
276{
277 struct dvb_frontend_private *fepriv = fe->frontend_priv;
278 struct dvb_fe_events *events = &fepriv->events;
279
280 mutex_lock(&events->mtx);
281 events->eventr = events->eventw;
282 mutex_unlock(&events->mtx);
283}
284
1da177e4
LT		 285static void dvb_frontend_init(struct dvb_frontend *fe)
286{
36bdbc3f
AP		 287 dev_dbg(fe->dvb->device,
288 "%s: initialising adapter %i frontend %i (%s)...\n",
289 __func__, fe->dvb->num, fe->id, fe->ops.info.name);
dea74869
PB		 290
291 if (fe->ops.init)
292 fe->ops.init(fe);
293 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 294 if (fe->ops.i2c_gate_ctrl)
295 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 296 fe->ops.tuner_ops.init(fe);
297 if (fe->ops.i2c_gate_ctrl)
298 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 299 }
1da177e4
LT		 300}
301
86f40cc3
AQ		 302void dvb_frontend_reinitialise(struct dvb_frontend *fe)
303{
304 struct dvb_frontend_private *fepriv = fe->frontend_priv;
305
306 fepriv->reinitialise = 1;
307 dvb_frontend_wakeup(fe);
308}
309EXPORT_SYMBOL(dvb_frontend_reinitialise);
310
36cb557a 311static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 312{
36cb557a 313 int q2;
36bdbc3f 314 struct dvb_frontend *fe = fepriv->dvbdev->priv;
1da177e4 315
36bdbc3f 316 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 317
36cb557a
AQ		 318 if (locked)
319 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
320 else
321 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 322
36cb557a
AQ		 323 q2 = fepriv->quality - 128;
324 q2 *= q2;
1da177e4 325
36cb557a 326 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 327}
328
329/**
330 * Performs automatic twiddling of frontend parameters.
331 *
332 * @param fe The frontend concerned.
333 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
334 * @returns Number of complete iterations that have been performed.
335 */
36cb557a 336static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 337{
338 int autoinversion;
339 int ready = 0;
01886255 340 int fe_set_err = 0;
0c53c70f 341 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4
MCC		 342 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
343 int original_inversion = c->inversion;
344 u32 original_frequency = c->frequency;
1da177e4
LT		 345
346 /* are we using autoinversion? */
dea74869 347 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4 348 (c->inversion == INVERSION_AUTO));
1da177e4
LT		 349
350 /* setup parameters correctly */
351 while(!ready) {
352 /* calculate the lnb_drift */
353 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
354
355 /* wrap the auto_step if we've exceeded the maximum drift */
356 if (fepriv->lnb_drift > fepriv->max_drift) {
357 fepriv->auto_step = 0;
358 fepriv->auto_sub_step = 0;
359 fepriv->lnb_drift = 0;
360 }
361
362 /* perform inversion and +/- zigzag */
363 switch(fepriv->auto_sub_step) {
364 case 0:
365 /* try with the current inversion and current drift setting */
366 ready = 1;
367 break;
368
369 case 1:
370 if (!autoinversion) break;
371
372 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
373 ready = 1;
374 break;
375
376 case 2:
377 if (fepriv->lnb_drift == 0) break;
378
379 fepriv->lnb_drift = -fepriv->lnb_drift;
380 ready = 1;
381 break;
382
383 case 3:
384 if (fepriv->lnb_drift == 0) break;
385 if (!autoinversion) break;
386
387 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
388 fepriv->lnb_drift = -fepriv->lnb_drift;
389 ready = 1;
390 break;
391
392 default:
393 fepriv->auto_step++;
394 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
395 break;
396 }
397
398 if (!ready) fepriv->auto_sub_step++;
399 }
400
401 /* if this attempt would hit where we started, indicate a complete
402 * iteration has occurred */
403 if ((fepriv->auto_step == fepriv->started_auto_step) &&
404 (fepriv->auto_sub_step == 0) && check_wrapped) {
405 return 1;
406 }
407
36bdbc3f
AP		 408 dev_dbg(fe->dvb->device, "%s: drift:%i inversion:%i auto_step:%i " \
409 "auto_sub_step:%i started_auto_step:%i\n",
410 __func__, fepriv->lnb_drift, fepriv->inversion,
411 fepriv->auto_step, fepriv->auto_sub_step,
412 fepriv->started_auto_step);
1da177e4
LT		 413
414 /* set the frontend itself */
ac3852c4 415 c->frequency += fepriv->lnb_drift;
1da177e4 416 if (autoinversion)
ac3852c4
MCC		 417 c->inversion = fepriv->inversion;
418 tmp = *c;
dea74869 419 if (fe->ops.set_frontend)
bc9cd273 420 fe_set_err = fe->ops.set_frontend(fe);
ac3852c4 421 *c = tmp;
01886255
JG		 422 if (fe_set_err < 0) {
423 fepriv->state = FESTATE_ERROR;
424 return fe_set_err;
425 }
1da177e4 426
ac3852c4
MCC		 427 c->frequency = original_frequency;
428 c->inversion = original_inversion;
1da177e4
LT		 429
430 fepriv->auto_sub_step++;
431 return 0;
432}
433
36cb557a
AQ		 434static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
435{
0df289a2 436 enum fe_status s = 0;
01886255 437 int retval = 0;
36cb557a 438 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4 439 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
36cb557a
AQ		 440
441 /* if we've got no parameters, just keep idling */
442 if (fepriv->state & FESTATE_IDLE) {
443 fepriv->delay = 3*HZ;
444 fepriv->quality = 0;
445 return;
446 }
447
448 /* in SCAN mode, we just set the frontend when asked and leave it alone */
449 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
450 if (fepriv->state & FESTATE_RETUNE) {
ac3852c4 451 tmp = *c;
dea74869 452 if (fe->ops.set_frontend)
bc9cd273 453 retval = fe->ops.set_frontend(fe);
ac3852c4 454 *c = tmp;
01886255
JG		 455 if (retval < 0)
456 fepriv->state = FESTATE_ERROR;
457 else
458 fepriv->state = FESTATE_TUNED;
36cb557a
AQ		 459 }
460 fepriv->delay = 3*HZ;
461 fepriv->quality = 0;
462 return;
463 }
464
465 /* get the frontend status */
466 if (fepriv->state & FESTATE_RETUNE) {
467 s = 0;
468 } else {
dea74869
PB		 469 if (fe->ops.read_status)
470 fe->ops.read_status(fe, &s);
36cb557a
AQ		 471 if (s != fepriv->status) {
472 dvb_frontend_add_event(fe, s);
473 fepriv->status = s;
474 }
475 }
476
477 /* if we're not tuned, and we have a lock, move to the TUNED state */
478 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
479 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
480 fepriv->state = FESTATE_TUNED;
481
482 /* if we're tuned, then we have determined the correct inversion */
dea74869 483 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4
MCC		 484 (c->inversion == INVERSION_AUTO)) {
485 c->inversion = fepriv->inversion;
36cb557a
AQ		 486 }
487 return;
488 }
489
490 /* if we are tuned already, check we're still locked */
491 if (fepriv->state & FESTATE_TUNED) {
492 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
493
494 /* we're tuned, and the lock is still good... */
495 if (s & FE_HAS_LOCK) {
496 return;
497 } else { /* if we _WERE_ tuned, but now don't have a lock */
498 fepriv->state = FESTATE_ZIGZAG_FAST;
499 fepriv->started_auto_step = fepriv->auto_step;
500 fepriv->check_wrapped = 0;
501 }
502 }
503
504 /* don't actually do anything if we're in the LOSTLOCK state,
505 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
506 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 507 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 508 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
509 return;
510 }
511
512 /* don't do anything if we're in the DISEQC state, since this
513 * might be someone with a motorized dish controlled by DISEQC.
514 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
515 if (fepriv->state & FESTATE_DISEQC) {
516 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
517 return;
518 }
519
520 /* if we're in the RETUNE state, set everything up for a brand
521 * new scan, keeping the current inversion setting, as the next
522 * tune is _very_ likely to require the same */
523 if (fepriv->state & FESTATE_RETUNE) {
524 fepriv->lnb_drift = 0;
525 fepriv->auto_step = 0;
526 fepriv->auto_sub_step = 0;
527 fepriv->started_auto_step = 0;
528 fepriv->check_wrapped = 0;
529 }
530
531 /* fast zigzag. */
532 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
533 fepriv->delay = fepriv->min_delay;
534
2030c032 535 /* perform a tune */
01886255
JG		 536 retval = dvb_frontend_swzigzag_autotune(fe,
537 fepriv->check_wrapped);
538 if (retval < 0) {
539 return;
540 } else if (retval) {
36cb557a
AQ		 541 /* OK, if we've run out of trials at the fast speed.
542 * Drop back to slow for the _next_ attempt */
543 fepriv->state = FESTATE_SEARCHING_SLOW;
544 fepriv->started_auto_step = fepriv->auto_step;
545 return;
546 }
547 fepriv->check_wrapped = 1;
548
549 /* if we've just retuned, enter the ZIGZAG_FAST state.
550 * This ensures we cannot return from an
551 * FE_SET_FRONTEND ioctl before the first frontend tune
552 * occurs */
553 if (fepriv->state & FESTATE_RETUNE) {
554 fepriv->state = FESTATE_TUNING_FAST;
555 }
556 }
557
558 /* slow zigzag */
559 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
560 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
561
562 /* Note: don't bother checking for wrapping; we stay in this
563 * state until we get a lock */
564 dvb_frontend_swzigzag_autotune(fe, 0);
565 }
566}
567
1da177e4
LT		 568static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
569{
0c53c70f 570 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 571
18ed2860 572 if (fe->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 573 return 1;
574
575 if (fepriv->dvbdev->writers == 1)
b9d5efcc 576 if (time_after_eq(jiffies, fepriv->release_jiffies +
36cb557a 577 dvb_shutdown_timeout * HZ))
1da177e4
LT		 578 return 1;
579
580 return 0;
581}
582
583static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
584{
0c53c70f 585 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 586
587 if (fepriv->wakeup) {
588 fepriv->wakeup = 0;
589 return 1;
590 }
591 return dvb_frontend_is_exiting(fe);
592}
593
594static void dvb_frontend_wakeup(struct dvb_frontend *fe)
595{
0c53c70f 596 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 597
598 fepriv->wakeup = 1;
599 wake_up_interruptible(&fepriv->wait_queue);
600}
601
1da177e4
LT		 602static int dvb_frontend_thread(void *data)
603{
0c53c70f 604 struct dvb_frontend *fe = data;
2ea9a08d 605 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 606 struct dvb_frontend_private *fepriv = fe->frontend_priv;
0df289a2 607 enum fe_status s;
c59e7870 608 enum dvbfe_algo algo;
7e072221 609 bool re_tune = false;
6ae23224 610 bool semheld = false;
1da177e4 611
36bdbc3f 612 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 613
36cb557a
AQ		 614 fepriv->check_wrapped = 0;
615 fepriv->quality = 0;
616 fepriv->delay = 3*HZ;
1da177e4 617 fepriv->status = 0;
1da177e4 618 fepriv->wakeup = 0;
04c56d0e
AQ		 619 fepriv->reinitialise = 0;
620
621 dvb_frontend_init(fe);
1da177e4 622
83144186 623 set_freezable();
1da177e4
LT		 624 while (1) {
625 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 626restart:
94238e9b 627 wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 628 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
629 || freezing(current),
8eec1429
HP		 630 fepriv->delay);
631
632 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4 633 /* got signal or quitting */
6ae23224
JL		 634 if (!down_interruptible(&fepriv->sem))
635 semheld = true;
18ed2860 636 fe->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 637 break;
638 }
639
8eec1429 640 if (try_to_freeze())
6591691b 641 goto restart;
1da177e4
LT		 642
643 if (down_interruptible(&fepriv->sem))
644 break;
645
86f40cc3
AQ		 646 if (fepriv->reinitialise) {
647 dvb_frontend_init(fe);
42f4e774 648 if (fe->ops.set_tone && fepriv->tone != -1)
dea74869 649 fe->ops.set_tone(fe, fepriv->tone);
42f4e774 650 if (fe->ops.set_voltage && fepriv->voltage != -1)
dea74869 651 fe->ops.set_voltage(fe, fepriv->voltage);
86f40cc3
AQ		 652 fepriv->reinitialise = 0;
653 }
654
36cb557a 655 /* do an iteration of the tuning loop */
d772bd03 656 if (fe->ops.get_frontend_algo) {
c59e7870
MA		 657 algo = fe->ops.get_frontend_algo(fe);
658 switch (algo) {
659 case DVBFE_ALGO_HW:
36bdbc3f 660 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
c59e7870 661
d772bd03 662 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 663 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTATE_RETUNE\n", __func__);
7e072221 664 re_tune = true;
d772bd03 665 fepriv->state = FESTATE_TUNED;
45145b67
SA		 666 } else {
667 re_tune = false;
d772bd03
MA		 668 }
669
c59e7870 670 if (fe->ops.tune)
7e072221 671 fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s);
c59e7870 672
2fac9a0f 673 if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
36bdbc3f 674 dev_dbg(fe->dvb->device, "%s: state changed, adding current state\n", __func__);
d772bd03
MA		 675 dvb_frontend_add_event(fe, s);
676 fepriv->status = s;
677 }
c59e7870
MA		 678 break;
679 case DVBFE_ALGO_SW:
36bdbc3f 680 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
70d90635 681 dvb_frontend_swzigzag(fe);
c59e7870
MA		 682 break;
683 case DVBFE_ALGO_CUSTOM:
36bdbc3f 684 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
c59e7870 685 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 686 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTAT_RETUNE\n", __func__);
c59e7870
MA		 687 fepriv->state = FESTATE_TUNED;
688 }
689 /* Case where we are going to search for a carrier
690 * User asked us to retune again for some reason, possibly
691 * requesting a search with a new set of parameters
692 */
693 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
7bcbdf38 694 if (fe->ops.search) {
41da5320 695 fepriv->algo_status = fe->ops.search(fe);
c59e7870
MA		 696 /* We did do a search as was requested, the flags are
697 * now unset as well and has the flags wrt to search.
698 */
7bcbdf38
AJ		 699 } else {
700 fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
701 }
c59e7870
MA		 702 }
703 /* Track the carrier if the search was successful */
1b5d8716 704 if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) {
7bcbdf38
AJ		 705 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
706 fepriv->delay = HZ / 2;
707 }
2ea9a08d 708 dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out);
7bcbdf38
AJ		 709 fe->ops.read_status(fe, &s);
710 if (s != fepriv->status) {
711 dvb_frontend_add_event(fe, s); /* update event list */
712 fepriv->status = s;
713 if (!(s & FE_HAS_LOCK)) {
714 fepriv->delay = HZ / 10;
715 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
716 } else {
717 fepriv->delay = 60 * HZ;
718 }
c59e7870
MA		 719 }
720 break;
721 default:
36bdbc3f 722 dev_dbg(fe->dvb->device, "%s: UNDEFINED ALGO !\n", __func__);
c59e7870
MA		 723 break;
724 }
725 } else {
4a4edcca 726 dvb_frontend_swzigzag(fe);
c59e7870 727 }
1da177e4
LT		 728 }
729
608f62d6
OE		 730 if (dvb_powerdown_on_sleep) {
731 if (fe->ops.set_voltage)
732 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869 733 if (fe->ops.tuner_ops.sleep) {
41286d97
DH		 734 if (fe->ops.i2c_gate_ctrl)
735 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 736 fe->ops.tuner_ops.sleep(fe);
737 if (fe->ops.i2c_gate_ctrl)
738 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 739 }
dea74869
PB		 740 if (fe->ops.sleep)
741 fe->ops.sleep(fe);
1da177e4
LT		 742 }
743
8eec1429 744 fepriv->thread = NULL;
e36309f5 745 if (kthread_should_stop())
18ed2860 746 fe->exit = DVB_FE_DEVICE_REMOVED;
e36309f5 747 else
18ed2860 748 fe->exit = DVB_FE_NO_EXIT;
1da177e4
LT		 749 mb();
750
6ae23224
JL		 751 if (semheld)
752 up(&fepriv->sem);
1da177e4
LT		 753 dvb_frontend_wakeup(fe);
754 return 0;
755}
756
757static void dvb_frontend_stop(struct dvb_frontend *fe)
758{
0c53c70f 759 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 760
36bdbc3f 761 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 762
18ed2860
SK		 763 if (fe->exit != DVB_FE_DEVICE_REMOVED)
764 fe->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 765 mb();
766
8eec1429 767 if (!fepriv->thread)
1da177e4
LT		 768 return;
769
8eec1429 770 kthread_stop(fepriv->thread);
ca5be9cd 771
a0a4714c 772 sema_init(&fepriv->sem, 1);
1da177e4
LT		 773 fepriv->state = FESTATE_IDLE;
774
775 /* paranoia check in case a signal arrived */
8eec1429 776 if (fepriv->thread)
36bdbc3f
AP		 777 dev_warn(fe->dvb->device,
778 "dvb_frontend_stop: warning: thread %p won't exit\n",
8eec1429 779 fepriv->thread);
1da177e4
LT		 780}
781
83b75b04 782/*
4deea4cb
MCC		 783 * Sleep for the amount of time given by add_usec parameter
784 *
785 * This needs to be as precise as possible, as it affects the detection of
786 * the dish tone command at the satellite subsystem. The precision is improved
787 * by using a scheduled msleep followed by udelay for the remainder.
83b75b04 788 */
9056a23b 789void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec)
83b75b04 790{
a733a41a 791 s32 delta;
83b75b04 792
a733a41a 793 *waketime = ktime_add_us(*waketime, add_usec);
6b3f9998 794 delta = ktime_us_delta(ktime_get_boottime(), *waketime);
83b75b04
N		 795 if (delta > 2500) {
796 msleep((delta - 1500) / 1000);
6b3f9998 797 delta = ktime_us_delta(ktime_get_boottime(), *waketime);
83b75b04
N		 798 }
799 if (delta > 0)
800 udelay(delta);
801}
802EXPORT_SYMBOL(dvb_frontend_sleep_until);
803
1da177e4
LT		 804static int dvb_frontend_start(struct dvb_frontend *fe)
805{
806 int ret;
0c53c70f 807 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 808 struct task_struct *fe_thread;
1da177e4 809
36bdbc3f 810 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 811
8eec1429 812 if (fepriv->thread) {
18ed2860 813 if (fe->exit == DVB_FE_NO_EXIT)
1da177e4
LT		 814 return 0;
815 else
816 dvb_frontend_stop (fe);
817 }
818
819 if (signal_pending(current))
820 return -EINTR;
821 if (down_interruptible (&fepriv->sem))
822 return -EINTR;
823
824 fepriv->state = FESTATE_IDLE;
18ed2860 825 fe->exit = DVB_FE_NO_EXIT;
8eec1429 826 fepriv->thread = NULL;
1da177e4
LT		 827 mb();
828
8eec1429 829 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 830 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 831 if (IS_ERR(fe_thread)) {
832 ret = PTR_ERR(fe_thread);
36bdbc3f
AP		 833 dev_warn(fe->dvb->device,
834 "dvb_frontend_start: failed to start kthread (%d)\n",
835 ret);
1da177e4
LT		 836 up(&fepriv->sem);
837 return ret;
838 }
8eec1429 839 fepriv->thread = fe_thread;
1da177e4
LT		 840 return 0;
841}
842
2030c032 843static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
c471b331
OE		 844 u32 *freq_min, u32 *freq_max)
845{
846 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
847
848 if (fe->ops.info.frequency_max == 0)
849 *freq_max = fe->ops.tuner_ops.info.frequency_max;
850 else if (fe->ops.tuner_ops.info.frequency_max == 0)
851 *freq_max = fe->ops.info.frequency_max;
852 else
853 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
854
855 if (*freq_min == 0 || *freq_max == 0)
36bdbc3f
AP		 856 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
857 fe->dvb->num, fe->id);
c471b331
OE		 858}
859
5bfaadde 860static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
1fab46f0 861{
5bfaadde 862 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c471b331
OE		 863 u32 freq_min;
864 u32 freq_max;
865
1fab46f0 866 /* range check: frequency */
2030c032 867 dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
5bfaadde
MCC		 868 if ((freq_min && c->frequency < freq_min) ||
869 (freq_max && c->frequency > freq_max)) {
36bdbc3f
AP		 870 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
871 fe->dvb->num, fe->id, c->frequency,
872 freq_min, freq_max);
1fab46f0
OE		 873 return -EINVAL;
874 }
875
876 /* range check: symbol rate */
5bfaadde
MCC		 877 switch (c->delivery_system) {
878 case SYS_DVBS:
879 case SYS_DVBS2:
880 case SYS_TURBO:
881 case SYS_DVBC_ANNEX_A:
882 case SYS_DVBC_ANNEX_C:
1fab46f0 883 if ((fe->ops.info.symbol_rate_min &&
5bfaadde 884 c->symbol_rate < fe->ops.info.symbol_rate_min) ||
1fab46f0 885 (fe->ops.info.symbol_rate_max &&
5bfaadde 886 c->symbol_rate > fe->ops.info.symbol_rate_max)) {
36bdbc3f
AP		 887 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
888 fe->dvb->num, fe->id, c->symbol_rate,
889 fe->ops.info.symbol_rate_min,
890 fe->ops.info.symbol_rate_max);
1fab46f0
OE		 891 return -EINVAL;
892 }
5bfaadde
MCC		 893 default:
894 break;
1fab46f0
OE		 895 }
896
897 return 0;
898}
899
b6e760f3
PB		 900static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
901{
50727719 902 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
b6e760f3 903 int i;
149709f5 904 u32 delsys;
b6e760f3 905
149709f5 906 delsys = c->delivery_system;
808d24d6 907 memset(c, 0, offsetof(struct dtv_frontend_properties, strength));
149709f5 908 c->delivery_system = delsys;
50727719
AO		 909
910 c->state = DTV_CLEAR;
26c924fe 911
36bdbc3f
AP		 912 dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n",
913 __func__, c->delivery_system);
26c924fe 914
50727719 915 c->transmission_mode = TRANSMISSION_MODE_AUTO;
26c924fe 916 c->bandwidth_hz = 0; /* AUTO */
50727719
AO		 917 c->guard_interval = GUARD_INTERVAL_AUTO;
918 c->hierarchy = HIERARCHY_AUTO;
26c924fe 919 c->symbol_rate = 0;
50727719
AO		 920 c->code_rate_HP = FEC_AUTO;
921 c->code_rate_LP = FEC_AUTO;
26c924fe 922 c->fec_inner = FEC_AUTO;
39ce61a8 923 c->rolloff = ROLLOFF_AUTO;
26c924fe 924 c->voltage = SEC_VOLTAGE_OFF;
26c924fe
MCC		 925 c->sectone = SEC_TONE_OFF;
926 c->pilot = PILOT_AUTO;
50727719 927
a520ca97
MCC		 928 c->isdbt_partial_reception = 0;
929 c->isdbt_sb_mode = 0;
930 c->isdbt_sb_subchannel = 0;
931 c->isdbt_sb_segment_idx = 0;
932 c->isdbt_sb_segment_count = 0;
933 c->isdbt_layer_enabled = 0;
b6e760f3 934 for (i = 0; i < 3; i++) {
50727719
AO		 935 c->layer[i].fec = FEC_AUTO;
936 c->layer[i].modulation = QAM_AUTO;
a520ca97
MCC		 937 c->layer[i].interleaving = 0;
938 c->layer[i].segment_count = 0;
b6e760f3
PB		 939 }
940
287cefd0 941 c->stream_id = NO_STREAM_ID_FILTER;
26c924fe 942
5bfaadde
MCC		 943 switch (c->delivery_system) {
944 case SYS_DVBS:
945 case SYS_DVBS2:
946 case SYS_TURBO:
947 c->modulation = QPSK; /* implied for DVB-S in legacy API */
948 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
949 break;
950 case SYS_ATSC:
951 c->modulation = VSB_8;
952 break;
8e281faf
AT		 953 case SYS_ISDBS:
954 c->symbol_rate = 28860000;
955 c->rolloff = ROLLOFF_35;
956 c->bandwidth_hz = c->symbol_rate / 100 * 135;
957 break;
5bfaadde
MCC		 958 default:
959 c->modulation = QAM_AUTO;
960 break;
961 }
962
33eebec5
AP		 963 c->lna = LNA_AUTO;
964
b6e760f3
PB		 965 return 0;
966}
967
968#define _DTV_CMD(n, s, b) \
969[n] = { \
970 .name = #n, \
971 .cmd = n, \
972 .set = s,\
973 .buffer = b \
974}
975
ec05a642 976static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
06d3a396
MCC		 977 _DTV_CMD(DTV_TUNE, 1, 0),
978 _DTV_CMD(DTV_CLEAR, 1, 0),
6b73eeaf
ST		 979
980 /* Set */
06d3a396
MCC		 981 _DTV_CMD(DTV_FREQUENCY, 1, 0),
982 _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
983 _DTV_CMD(DTV_MODULATION, 1, 0),
984 _DTV_CMD(DTV_INVERSION, 1, 0),
985 _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
986 _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
987 _DTV_CMD(DTV_INNER_FEC, 1, 0),
988 _DTV_CMD(DTV_VOLTAGE, 1, 0),
989 _DTV_CMD(DTV_TONE, 1, 0),
990 _DTV_CMD(DTV_PILOT, 1, 0),
991 _DTV_CMD(DTV_ROLLOFF, 1, 0),
992 _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
993 _DTV_CMD(DTV_HIERARCHY, 1, 0),
994 _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
995 _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
996 _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
997 _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
224b6642 998 _DTV_CMD(DTV_INTERLEAVING, 1, 0),
b6e760f3
PB		 999
1000 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
1001 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
1002 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
1003 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
1004 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
e7b7949a 1005 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
b6e760f3
PB		 1006 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
1007 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
1008 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
1009 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
1010 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
1011 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
1012 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
1013 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
1014 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
1015 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
1016 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
1017 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
1018
287cefd0
EP		 1019 _DTV_CMD(DTV_STREAM_ID, 1, 0),
1020 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
8a2697ab 1021 _DTV_CMD(DTV_LNA, 1, 0),
98293ef3 1022
6b73eeaf 1023 /* Get */
06d3a396
MCC		 1024 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
1025 _DTV_CMD(DTV_API_VERSION, 0, 0),
ba2780c7
MA		 1026
1027 _DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
ca689488
MK		 1028
1029 _DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
1030 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
1031
1032 _DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
ca689488
MK		 1033 _DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
1034 _DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
1035 _DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
1036 _DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
1037 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
ca689488
MK		 1038 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
1039 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
1040 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
1041 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
1042 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
1043 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
1044 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
7cd4ece5
MCC		 1045
1046 /* Statistics API */
1047 _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH, 0, 0),
1048 _DTV_CMD(DTV_STAT_CNR, 0, 0),
1049 _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0, 0),
1050 _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0, 0),
1051 _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0, 0),
1052 _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0, 0),
1053 _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT, 0, 0),
1054 _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
6b73eeaf
ST		 1055};
1056
c29ebb64
MCC		 1057static void dtv_property_dump(struct dvb_frontend *fe,
1058 bool is_set,
1059 struct dtv_property *tvp)
6b73eeaf
ST		 1060{
1061 int i;
1062
106ff9e0 1063 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
c29ebb64
MCC		 1064 dev_warn(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x undefined\n",
1065 __func__,
1066 is_set ? "SET" : "GET",
1067 tvp->cmd);
4aae8efb
DB		 1068 return;
1069 }
1070
c29ebb64
MCC		 1071 dev_dbg(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x (%s)\n", __func__,
1072 is_set ? "SET" : "GET",
1073 tvp->cmd,
1074 dtv_cmds[tvp->cmd].name);
6b73eeaf 1075
36bdbc3f
AP		 1076 if (dtv_cmds[tvp->cmd].buffer) {
1077 dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
1078 __func__, tvp->u.buffer.len);
6b73eeaf
ST		 1079
1080 for(i = 0; i < tvp->u.buffer.len; i++)
36bdbc3f
AP		 1081 dev_dbg(fe->dvb->device,
1082 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1083 __func__, i, tvp->u.buffer.data[i]);
1084 } else {
1085 dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__,
1086 tvp->u.data);
1087 }
6b73eeaf
ST		 1088}
1089
ee33c525
ST		 1090/* Synchronise the legacy tuning parameters into the cache, so that demodulator
1091 * drivers can use a single set_frontend tuning function, regardless of whether
1092 * it's being used for the legacy or new API, reducing code and complexity.
1093 */
5bfaadde
MCC		 1094static int dtv_property_cache_sync(struct dvb_frontend *fe,
1095 struct dtv_frontend_properties *c,
1096 const struct dvb_frontend_parameters *p)
ee33c525 1097{
ee33c525
ST		 1098 c->frequency = p->frequency;
1099 c->inversion = p->inversion;
1100
5bfaadde
MCC		 1101 switch (dvbv3_type(c->delivery_system)) {
1102 case DVBV3_QPSK:
36bdbc3f 1103 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
ee33c525
ST		 1104 c->symbol_rate = p->u.qpsk.symbol_rate;
1105 c->fec_inner = p->u.qpsk.fec_inner;
1106 break;
5bfaadde 1107 case DVBV3_QAM:
36bdbc3f 1108 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
ee33c525
ST		 1109 c->symbol_rate = p->u.qam.symbol_rate;
1110 c->fec_inner = p->u.qam.fec_inner;
1111 c->modulation = p->u.qam.modulation;
1112 break;
5bfaadde 1113 case DVBV3_OFDM:
36bdbc3f
AP		 1114 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
1115
9a27e6a0
MCC		 1116 switch (p->u.ofdm.bandwidth) {
1117 case BANDWIDTH_10_MHZ:
1118 c->bandwidth_hz = 10000000;
1119 break;
1120 case BANDWIDTH_8_MHZ:
75b7f943 1121 c->bandwidth_hz = 8000000;
9a27e6a0
MCC		 1122 break;
1123 case BANDWIDTH_7_MHZ:
1124 c->bandwidth_hz = 7000000;
1125 break;
1126 case BANDWIDTH_6_MHZ:
1127 c->bandwidth_hz = 6000000;
1128 break;
1129 case BANDWIDTH_5_MHZ:
1130 c->bandwidth_hz = 5000000;
1131 break;
1132 case BANDWIDTH_1_712_MHZ:
1133 c->bandwidth_hz = 1712000;
1134 break;
1135 case BANDWIDTH_AUTO:
75b7f943 1136 c->bandwidth_hz = 0;
9a27e6a0
MCC		 1137 }
1138
ee33c525
ST		 1139 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1140 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1141 c->modulation = p->u.ofdm.constellation;
1142 c->transmission_mode = p->u.ofdm.transmission_mode;
1143 c->guard_interval = p->u.ofdm.guard_interval;
1144 c->hierarchy = p->u.ofdm.hierarchy_information;
1145 break;
5bfaadde 1146 case DVBV3_ATSC:
36bdbc3f 1147 dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__);
ee33c525 1148 c->modulation = p->u.vsb.modulation;
ca689488
MK		 1149 if (c->delivery_system == SYS_ATSCMH)
1150 break;
80a773c9
ST		 1151 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1152 c->delivery_system = SYS_ATSC;
1153 else
1154 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525 1155 break;
5bfaadde 1156 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1157 dev_err(fe->dvb->device,
1158 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1159 __func__, c->delivery_system);
5bfaadde 1160 return -EINVAL;
ee33c525 1161 }
5bfaadde
MCC		 1162
1163 return 0;
ee33c525
ST		 1164}
1165
d5748f10
ST		 1166/* Ensure the cached values are set correctly in the frontend
1167 * legacy tuning structures, for the advanced tuning API.
1168 */
2ea9a08d
MCC		 1169static int
1170dtv_property_legacy_params_sync(struct dvb_frontend *fe,
1171 const struct dtv_frontend_properties *c,
1172 struct dvb_frontend_parameters *p)
6b73eeaf 1173{
d5748f10
ST		 1174 p->frequency = c->frequency;
1175 p->inversion = c->inversion;
6b73eeaf 1176
5bfaadde
MCC		 1177 switch (dvbv3_type(c->delivery_system)) {
1178 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1179 dev_err(fe->dvb->device,
1180 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1181 __func__, c->delivery_system);
5bfaadde
MCC		 1182 return -EINVAL;
1183 case DVBV3_QPSK:
36bdbc3f 1184 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
d5748f10
ST		 1185 p->u.qpsk.symbol_rate = c->symbol_rate;
1186 p->u.qpsk.fec_inner = c->fec_inner;
1187 break;
5bfaadde 1188 case DVBV3_QAM:
36bdbc3f 1189 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
d5748f10
ST		 1190 p->u.qam.symbol_rate = c->symbol_rate;
1191 p->u.qam.fec_inner = c->fec_inner;
1192 p->u.qam.modulation = c->modulation;
1193 break;
5bfaadde 1194 case DVBV3_OFDM:
36bdbc3f 1195 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
9a27e6a0
MCC		 1196 switch (c->bandwidth_hz) {
1197 case 10000000:
1198 p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
1199 break;
1200 case 8000000:
75b7f943 1201 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
9a27e6a0
MCC		 1202 break;
1203 case 7000000:
1204 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1205 break;
1206 case 6000000:
1207 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1208 break;
1209 case 5000000:
1210 p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
1211 break;
1212 case 1712000:
1213 p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
1214 break;
1215 case 0:
1216 default:
75b7f943 1217 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
9a27e6a0 1218 }
d5748f10
ST		 1219 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1220 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1221 p->u.ofdm.constellation = c->modulation;
1222 p->u.ofdm.transmission_mode = c->transmission_mode;
1223 p->u.ofdm.guard_interval = c->guard_interval;
1224 p->u.ofdm.hierarchy_information = c->hierarchy;
1225 break;
5bfaadde 1226 case DVBV3_ATSC:
36bdbc3f 1227 dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__);
d5748f10
ST		 1228 p->u.vsb.modulation = c->modulation;
1229 break;
1230 }
5bfaadde 1231 return 0;
6b73eeaf
ST		 1232}
1233
a689e365
MCC		 1234/**
1235 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1236 * @fe: struct dvb_frontend pointer
1237 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1238 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1239 *
1240 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1241 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1242 * If p_out is not null, it will update the DVBv3 params pointed by it.
1243 */
1244static int dtv_get_frontend(struct dvb_frontend *fe,
2ea9a08d 1245 struct dtv_frontend_properties *c,
a689e365
MCC		 1246 struct dvb_frontend_parameters *p_out)
1247{
a689e365
MCC		 1248 int r;
1249
a689e365 1250 if (fe->ops.get_frontend) {
7e3e68bc 1251 r = fe->ops.get_frontend(fe, c);
a689e365
MCC		 1252 if (unlikely(r < 0))
1253 return r;
7c61d80a 1254 if (p_out)
2ea9a08d 1255 dtv_property_legacy_params_sync(fe, c, p_out);
a689e365
MCC		 1256 return 0;
1257 }
1258
7c61d80a 1259 /* As everything is in cache, get_frontend fops are always supported */
b1e9a650 1260 return 0;
a689e365
MCC		 1261}
1262
16ef8def 1263static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5 1264 unsigned int cmd, void *parg);
16ef8def 1265static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1266 unsigned int cmd, void *parg);
1267
072ce0c5 1268static int dtv_property_process_get(struct dvb_frontend *fe,
a689e365 1269 const struct dtv_frontend_properties *c,
072ce0c5 1270 struct dtv_property *tvp,
16ef8def 1271 struct file *file)
363429a0 1272{
5bfaadde 1273 int r, ncaps;
bfbf2dae 1274
363429a0 1275 switch(tvp->cmd) {
ba2780c7 1276 case DTV_ENUM_DELSYS:
5bfaadde 1277 ncaps = 0;
0123f29c 1278 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
5bfaadde
MCC		 1279 tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
1280 ncaps++;
1281 }
1282 tvp->u.buffer.len = ncaps;
ba2780c7 1283 break;
363429a0 1284 case DTV_FREQUENCY:
50727719 1285 tvp->u.data = c->frequency;
363429a0
ST		 1286 break;
1287 case DTV_MODULATION:
50727719 1288 tvp->u.data = c->modulation;
363429a0 1289 break;
75b7f943 1290 case DTV_BANDWIDTH_HZ:
50727719 1291 tvp->u.data = c->bandwidth_hz;
363429a0
ST		 1292 break;
1293 case DTV_INVERSION:
50727719 1294 tvp->u.data = c->inversion;
363429a0
ST		 1295 break;
1296 case DTV_SYMBOL_RATE:
50727719 1297 tvp->u.data = c->symbol_rate;
363429a0
ST		 1298 break;
1299 case DTV_INNER_FEC:
50727719 1300 tvp->u.data = c->fec_inner;
363429a0
ST		 1301 break;
1302 case DTV_PILOT:
50727719 1303 tvp->u.data = c->pilot;
363429a0
ST		 1304 break;
1305 case DTV_ROLLOFF:
50727719 1306 tvp->u.data = c->rolloff;
363429a0
ST		 1307 break;
1308 case DTV_DELIVERY_SYSTEM:
50727719 1309 tvp->u.data = c->delivery_system;
363429a0 1310 break;
363429a0 1311 case DTV_VOLTAGE:
50727719 1312 tvp->u.data = c->voltage;
363429a0
ST		 1313 break;
1314 case DTV_TONE:
50727719 1315 tvp->u.data = c->sectone;
363429a0 1316 break;
eacf8d8d
ST		 1317 case DTV_API_VERSION:
1318 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1319 break;
a4de91be 1320 case DTV_CODE_RATE_HP:
50727719 1321 tvp->u.data = c->code_rate_HP;
a4de91be
ST		 1322 break;
1323 case DTV_CODE_RATE_LP:
50727719 1324 tvp->u.data = c->code_rate_LP;
a4de91be 1325 break;
b87625f0 1326 case DTV_GUARD_INTERVAL:
50727719 1327 tvp->u.data = c->guard_interval;
b87625f0
ST		 1328 break;
1329 case DTV_TRANSMISSION_MODE:
50727719 1330 tvp->u.data = c->transmission_mode;
b87625f0 1331 break;
ef526f42 1332 case DTV_HIERARCHY:
50727719 1333 tvp->u.data = c->hierarchy;
ef526f42 1334 break;
224b6642
AP		 1335 case DTV_INTERLEAVING:
1336 tvp->u.data = c->interleaving;
1337 break;
b6e760f3
PB		 1338
1339 /* ISDB-T Support here */
1340 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1341 tvp->u.data = c->isdbt_partial_reception;
b6e760f3
PB		 1342 break;
1343 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1344 tvp->u.data = c->isdbt_sb_mode;
b6e760f3
PB		 1345 break;
1346 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1347 tvp->u.data = c->isdbt_sb_subchannel;
b6e760f3
PB		 1348 break;
1349 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1350 tvp->u.data = c->isdbt_sb_segment_idx;
b6e760f3
PB		 1351 break;
1352 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1353 tvp->u.data = c->isdbt_sb_segment_count;
b6e760f3 1354 break;
e7b7949a 1355 case DTV_ISDBT_LAYER_ENABLED:
50727719 1356 tvp->u.data = c->isdbt_layer_enabled;
e7b7949a 1357 break;
b6e760f3 1358 case DTV_ISDBT_LAYERA_FEC:
50727719 1359 tvp->u.data = c->layer[0].fec;
b6e760f3
PB		 1360 break;
1361 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1362 tvp->u.data = c->layer[0].modulation;
b6e760f3
PB		 1363 break;
1364 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1365 tvp->u.data = c->layer[0].segment_count;
b6e760f3
PB		 1366 break;
1367 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1368 tvp->u.data = c->layer[0].interleaving;
b6e760f3
PB		 1369 break;
1370 case DTV_ISDBT_LAYERB_FEC:
50727719 1371 tvp->u.data = c->layer[1].fec;
b6e760f3
PB		 1372 break;
1373 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1374 tvp->u.data = c->layer[1].modulation;
b6e760f3
PB		 1375 break;
1376 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1377 tvp->u.data = c->layer[1].segment_count;
b6e760f3
PB		 1378 break;
1379 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1380 tvp->u.data = c->layer[1].interleaving;
b6e760f3
PB		 1381 break;
1382 case DTV_ISDBT_LAYERC_FEC:
50727719 1383 tvp->u.data = c->layer[2].fec;
b6e760f3
PB		 1384 break;
1385 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1386 tvp->u.data = c->layer[2].modulation;
b6e760f3
PB		 1387 break;
1388 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1389 tvp->u.data = c->layer[2].segment_count;
b6e760f3
PB		 1390 break;
1391 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1392 tvp->u.data = c->layer[2].interleaving;
b6e760f3 1393 break;
287cefd0
EP		 1394
1395 /* Multistream support */
1396 case DTV_STREAM_ID:
1397 case DTV_DVBT2_PLP_ID_LEGACY:
1398 tvp->u.data = c->stream_id;
94d56ffa 1399 break;
ca689488
MK		 1400
1401 /* ATSC-MH */
1402 case DTV_ATSCMH_FIC_VER:
1403 tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
1404 break;
1405 case DTV_ATSCMH_PARADE_ID:
1406 tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
1407 break;
1408 case DTV_ATSCMH_NOG:
1409 tvp->u.data = fe->dtv_property_cache.atscmh_nog;
1410 break;
1411 case DTV_ATSCMH_TNOG:
1412 tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
1413 break;
1414 case DTV_ATSCMH_SGN:
1415 tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
1416 break;
1417 case DTV_ATSCMH_PRC:
1418 tvp->u.data = fe->dtv_property_cache.atscmh_prc;
1419 break;
1420 case DTV_ATSCMH_RS_FRAME_MODE:
1421 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
1422 break;
1423 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1424 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
1425 break;
1426 case DTV_ATSCMH_RS_CODE_MODE_PRI:
1427 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
1428 break;
1429 case DTV_ATSCMH_RS_CODE_MODE_SEC:
1430 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
1431 break;
1432 case DTV_ATSCMH_SCCC_BLOCK_MODE:
1433 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
1434 break;
1435 case DTV_ATSCMH_SCCC_CODE_MODE_A:
1436 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
1437 break;
1438 case DTV_ATSCMH_SCCC_CODE_MODE_B:
1439 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
1440 break;
1441 case DTV_ATSCMH_SCCC_CODE_MODE_C:
1442 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
1443 break;
1444 case DTV_ATSCMH_SCCC_CODE_MODE_D:
1445 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
1446 break;
ca689488 1447
33eebec5
AP		 1448 case DTV_LNA:
1449 tvp->u.data = c->lna;
1450 break;
1451
7cd4ece5
MCC		 1452 /* Fill quality measures */
1453 case DTV_STAT_SIGNAL_STRENGTH:
1454 tvp->u.st = c->strength;
1455 break;
1456 case DTV_STAT_CNR:
1457 tvp->u.st = c->cnr;
1458 break;
1459 case DTV_STAT_PRE_ERROR_BIT_COUNT:
1460 tvp->u.st = c->pre_bit_error;
1461 break;
1462 case DTV_STAT_PRE_TOTAL_BIT_COUNT:
1463 tvp->u.st = c->pre_bit_count;
1464 break;
1465 case DTV_STAT_POST_ERROR_BIT_COUNT:
1466 tvp->u.st = c->post_bit_error;
1467 break;
1468 case DTV_STAT_POST_TOTAL_BIT_COUNT:
1469 tvp->u.st = c->post_bit_count;
1470 break;
1471 case DTV_STAT_ERROR_BLOCK_COUNT:
1472 tvp->u.st = c->block_error;
1473 break;
1474 case DTV_STAT_TOTAL_BLOCK_COUNT:
1475 tvp->u.st = c->block_count;
1476 break;
363429a0 1477 default:
94a93e5f
MCC		 1478 dev_dbg(fe->dvb->device,
1479 "%s: FE property %d doesn't exist\n",
1480 __func__, tvp->cmd);
aff8ab5c 1481 return -EINVAL;
363429a0
ST		 1482 }
1483
e23d9ae3
AO		 1484 /* Allow the frontend to override outgoing properties */
1485 if (fe->ops.get_property) {
1486 r = fe->ops.get_property(fe, tvp);
1487 if (r < 0)
1488 return r;
1489 }
1490
c29ebb64 1491 dtv_property_dump(fe, false, tvp);
639544d7 1492
aff8ab5c 1493 return 0;
363429a0
ST		 1494}
1495
5bfaadde
MCC		 1496static int dtv_set_frontend(struct dvb_frontend *fe);
1497
04be0f76
MCC		 1498static bool is_dvbv3_delsys(u32 delsys)
1499{
1500 bool status;
1501
1502 status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
1503 (delsys == SYS_DVBS) || (delsys == SYS_ATSC);
1504
1505 return status;
1506}
1507
52dee392
MCC		 1508/**
1509 * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
1510 * @fe: struct frontend;
1511 * @delsys: DVBv5 type that will be used for emulation
1512 *
1513 * Provides emulation for delivery systems that are compatible with the old
1514 * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
1515 * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
1516 * parameters are compatible with DVB-S spec.
1517 */
1518static int emulate_delivery_system(struct dvb_frontend *fe, u32 delsys)
04be0f76 1519{
be431b16 1520 int i;
04be0f76 1521 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
04be0f76 1522
3626479e
MCC		 1523 c->delivery_system = delsys;
1524
04be0f76 1525 /*
52dee392 1526 * If the call is for ISDB-T, put it into full-seg, auto mode, TV
04be0f76 1527 */
52dee392
MCC		 1528 if (c->delivery_system == SYS_ISDBT) {
1529 dev_dbg(fe->dvb->device,
1530 "%s: Using defaults for SYS_ISDBT\n",
1531 __func__);
04be0f76 1532
52dee392
MCC		 1533 if (!c->bandwidth_hz)
1534 c->bandwidth_hz = 6000000;
1535
1536 c->isdbt_partial_reception = 0;
1537 c->isdbt_sb_mode = 0;
1538 c->isdbt_sb_subchannel = 0;
1539 c->isdbt_sb_segment_idx = 0;
1540 c->isdbt_sb_segment_count = 0;
1541 c->isdbt_layer_enabled = 7;
1542 for (i = 0; i < 3; i++) {
1543 c->layer[i].fec = FEC_AUTO;
1544 c->layer[i].modulation = QAM_AUTO;
1545 c->layer[i].interleaving = 0;
1546 c->layer[i].segment_count = 0;
04be0f76
MCC		 1547 }
1548 }
36bdbc3f 1549 dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n",
52dee392 1550 __func__, c->delivery_system);
9474c5e6 1551
04be0f76
MCC		 1552 return 0;
1553}
1554
52dee392
MCC		 1555/**
1556 * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
1557 * @fe: frontend struct
1558 * @desired_system: delivery system requested by the user
1559 *
1560 * A DVBv5 call know what's the desired system it wants. So, set it.
1561 *
1562 * There are, however, a few known issues with early DVBv5 applications that
1563 * are also handled by this logic:
1564 *
1565 * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
1566 * This is an API violation, but, as we don't want to break userspace,
1567 * convert it to the first supported delivery system.
1568 * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
1569 * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
1570 * ISDB-T provided backward compat with DVB-T.
1571 */
be431b16
MCC		 1572static int dvbv5_set_delivery_system(struct dvb_frontend *fe,
1573 u32 desired_system)
1574{
1575 int ncaps;
1576 u32 delsys = SYS_UNDEFINED;
1577 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1578 enum dvbv3_emulation_type type;
1579
1580 /*
1581 * It was reported that some old DVBv5 applications were
1582 * filling delivery_system with SYS_UNDEFINED. If this happens,
1583 * assume that the application wants to use the first supported
1584 * delivery system.
1585 */
52dee392
MCC		 1586 if (desired_system == SYS_UNDEFINED)
1587 desired_system = fe->ops.delsys[0];
be431b16
MCC		 1588
1589 /*
52dee392
MCC		 1590 * This is a DVBv5 call. So, it likely knows the supported
1591 * delivery systems. So, check if the desired delivery system is
1592 * supported
1593 */
be431b16 1594 ncaps = 0;
0123f29c 1595 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
be431b16
MCC		 1596 if (fe->ops.delsys[ncaps] == desired_system) {
1597 c->delivery_system = desired_system;
1598 dev_dbg(fe->dvb->device,
1599 "%s: Changing delivery system to %d\n",
1600 __func__, desired_system);
1601 return 0;
1602 }
1603 ncaps++;
1604 }
1605
1606 /*
52dee392
MCC		 1607 * The requested delivery system isn't supported. Maybe userspace
1608 * is requesting a DVBv3 compatible delivery system.
1609 *
1610 * The emulation only works if the desired system is one of the
1611 * delivery systems supported by DVBv3 API
be431b16 1612 */
be431b16
MCC		 1613 if (!is_dvbv3_delsys(desired_system)) {
1614 dev_dbg(fe->dvb->device,
52dee392
MCC		 1615 "%s: Delivery system %d not supported.\n",
1616 __func__, desired_system);
be431b16
MCC		 1617 return -EINVAL;
1618 }
1619
52dee392
MCC		 1620 type = dvbv3_type(desired_system);
1621
be431b16
MCC		 1622 /*
1623 * Get the last non-DVBv3 delivery system that has the same type
1624 * of the desired system
1625 */
1626 ncaps = 0;
0123f29c 1627 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392 1628 if (dvbv3_type(fe->ops.delsys[ncaps]) == type)
be431b16
MCC		 1629 delsys = fe->ops.delsys[ncaps];
1630 ncaps++;
1631 }
52dee392 1632
be431b16
MCC		 1633 /* There's nothing compatible with the desired delivery system */
1634 if (delsys == SYS_UNDEFINED) {
1635 dev_dbg(fe->dvb->device,
52dee392
MCC		 1636 "%s: Delivery system %d not supported on emulation mode.\n",
1637 __func__, desired_system);
be431b16
MCC		 1638 return -EINVAL;
1639 }
1640
52dee392
MCC		 1641 dev_dbg(fe->dvb->device,
1642 "%s: Using delivery system %d emulated as if it were %d\n",
1643 __func__, delsys, desired_system);
1644
1645 return emulate_delivery_system(fe, desired_system);
be431b16
MCC		 1646}
1647
52dee392
MCC		 1648/**
1649 * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
1650 * @fe: frontend struct
1651 *
1652 * A DVBv3 call doesn't know what's the desired system it wants. It also
1653 * doesn't allow to switch between different types. Due to that, userspace
1654 * should use DVBv5 instead.
1655 * However, in order to avoid breaking userspace API, limited backward
1656 * compatibility support is provided.
1657 *
1658 * There are some delivery systems that are incompatible with DVBv3 calls.
1659 *
1660 * This routine should work fine for frontends that support just one delivery
1661 * system.
1662 *
1663 * For frontends that support multiple frontends:
1664 * 1) It defaults to use the first supported delivery system. There's an
1665 * userspace application that allows changing it at runtime;
1666 *
1667 * 2) If the current delivery system is not compatible with DVBv3, it gets
1668 * the first one that it is compatible.
1669 *
1670 * NOTE: in order for this to work with applications like Kaffeine that
1671 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1672 * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
1673 * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
1674 * to DVB-S.
1675 */
be431b16
MCC		 1676static int dvbv3_set_delivery_system(struct dvb_frontend *fe)
1677{
1678 int ncaps;
be431b16
MCC		 1679 u32 delsys = SYS_UNDEFINED;
1680 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
be431b16
MCC		 1681
1682 /* If not set yet, defaults to the first supported delivery system */
1683 if (c->delivery_system == SYS_UNDEFINED)
1684 c->delivery_system = fe->ops.delsys[0];
1685
be431b16
MCC		 1686 /*
1687 * Trivial case: just use the current one, if it already a DVBv3
1688 * delivery system
1689 */
1690 if (is_dvbv3_delsys(c->delivery_system)) {
1691 dev_dbg(fe->dvb->device,
1692 "%s: Using delivery system to %d\n",
1693 __func__, c->delivery_system);
1694 return 0;
1695 }
1696
be431b16 1697 /*
52dee392
MCC		 1698 * Seek for the first delivery system that it is compatible with a
1699 * DVBv3 standard
be431b16
MCC		 1700 */
1701 ncaps = 0;
0123f29c 1702 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392
MCC		 1703 if (dvbv3_type(fe->ops.delsys[ncaps]) != DVBV3_UNKNOWN) {
1704 delsys = fe->ops.delsys[ncaps];
be431b16
MCC		 1705 break;
1706 }
1707 ncaps++;
1708 }
1709 if (delsys == SYS_UNDEFINED) {
52dee392
MCC		 1710 dev_dbg(fe->dvb->device,
1711 "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
1712 __func__);
1713 return -EINVAL;
be431b16 1714 }
52dee392 1715 return emulate_delivery_system(fe, delsys);
be431b16
MCC		 1716}
1717
072ce0c5
MCC		 1718static int dtv_property_process_set(struct dvb_frontend *fe,
1719 struct dtv_property *tvp,
072ce0c5 1720 struct file *file)
6b73eeaf
ST		 1721{
1722 int r = 0;
50727719 1723 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1724
bfbf2dae 1725 /* Allow the frontend to validate incoming properties */
aff8ab5c 1726 if (fe->ops.set_property) {
bfbf2dae 1727 r = fe->ops.set_property(fe, tvp);
aff8ab5c
AO		 1728 if (r < 0)
1729 return r;
1730 }
bfbf2dae 1731
c29ebb64
MCC		 1732 dtv_property_dump(fe, true, tvp);
1733
6b73eeaf 1734 switch(tvp->cmd) {
e7fee0f3 1735 case DTV_CLEAR:
5bfaadde
MCC		 1736 /*
1737 * Reset a cache of data specific to the frontend here. This does
6b73eeaf
ST		 1738 * not effect hardware.
1739 */
b6e760f3 1740 dvb_frontend_clear_cache(fe);
6b73eeaf 1741 break;
e7fee0f3 1742 case DTV_TUNE:
6b73eeaf 1743 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1744 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1745 * ioctl.
6b73eeaf 1746 */
50727719 1747 c->state = tvp->cmd;
36bdbc3f
AP		 1748 dev_dbg(fe->dvb->device, "%s: Finalised property cache\n",
1749 __func__);
d5748f10 1750
5bfaadde 1751 r = dtv_set_frontend(fe);
6b73eeaf 1752 break;
363429a0 1753 case DTV_FREQUENCY:
50727719 1754 c->frequency = tvp->u.data;
6b73eeaf 1755 break;
363429a0 1756 case DTV_MODULATION:
50727719 1757 c->modulation = tvp->u.data;
6b73eeaf 1758 break;
75b7f943 1759 case DTV_BANDWIDTH_HZ:
50727719 1760 c->bandwidth_hz = tvp->u.data;
6b73eeaf 1761 break;
363429a0 1762 case DTV_INVERSION:
50727719 1763 c->inversion = tvp->u.data;
6b73eeaf 1764 break;
363429a0 1765 case DTV_SYMBOL_RATE:
50727719 1766 c->symbol_rate = tvp->u.data;
6b73eeaf 1767 break;
363429a0 1768 case DTV_INNER_FEC:
50727719 1769 c->fec_inner = tvp->u.data;
6b73eeaf 1770 break;
363429a0 1771 case DTV_PILOT:
50727719 1772 c->pilot = tvp->u.data;
6b73eeaf 1773 break;
363429a0 1774 case DTV_ROLLOFF:
50727719 1775 c->rolloff = tvp->u.data;
6b73eeaf 1776 break;
363429a0 1777 case DTV_DELIVERY_SYSTEM:
be431b16 1778 r = dvbv5_set_delivery_system(fe, tvp->u.data);
6b73eeaf 1779 break;
363429a0 1780 case DTV_VOLTAGE:
50727719 1781 c->voltage = tvp->u.data;
16ef8def 1782 r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
50727719 1783 (void *)c->voltage);
13c97bf5 1784 break;
363429a0 1785 case DTV_TONE:
50727719 1786 c->sectone = tvp->u.data;
16ef8def 1787 r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
50727719 1788 (void *)c->sectone);
13c97bf5 1789 break;
a4de91be 1790 case DTV_CODE_RATE_HP:
50727719 1791 c->code_rate_HP = tvp->u.data;
a4de91be
ST		 1792 break;
1793 case DTV_CODE_RATE_LP:
50727719 1794 c->code_rate_LP = tvp->u.data;
a4de91be 1795 break;
b87625f0 1796 case DTV_GUARD_INTERVAL:
50727719 1797 c->guard_interval = tvp->u.data;
b87625f0
ST		 1798 break;
1799 case DTV_TRANSMISSION_MODE:
50727719 1800 c->transmission_mode = tvp->u.data;
b87625f0 1801 break;
ef526f42 1802 case DTV_HIERARCHY:
50727719 1803 c->hierarchy = tvp->u.data;
ef526f42 1804 break;
224b6642
AP		 1805 case DTV_INTERLEAVING:
1806 c->interleaving = tvp->u.data;
1807 break;
b6e760f3
PB		 1808
1809 /* ISDB-T Support here */
1810 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1811 c->isdbt_partial_reception = tvp->u.data;
b6e760f3
PB		 1812 break;
1813 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1814 c->isdbt_sb_mode = tvp->u.data;
b6e760f3
PB		 1815 break;
1816 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1817 c->isdbt_sb_subchannel = tvp->u.data;
b6e760f3
PB		 1818 break;
1819 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1820 c->isdbt_sb_segment_idx = tvp->u.data;
b6e760f3
PB		 1821 break;
1822 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1823 c->isdbt_sb_segment_count = tvp->u.data;
b6e760f3 1824 break;
e7b7949a 1825 case DTV_ISDBT_LAYER_ENABLED:
50727719 1826 c->isdbt_layer_enabled = tvp->u.data;
e7b7949a 1827 break;
b6e760f3 1828 case DTV_ISDBT_LAYERA_FEC:
50727719 1829 c->layer[0].fec = tvp->u.data;
b6e760f3
PB		 1830 break;
1831 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1832 c->layer[0].modulation = tvp->u.data;
b6e760f3
PB		 1833 break;
1834 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1835 c->layer[0].segment_count = tvp->u.data;
b6e760f3
PB		 1836 break;
1837 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1838 c->layer[0].interleaving = tvp->u.data;
b6e760f3
PB		 1839 break;
1840 case DTV_ISDBT_LAYERB_FEC:
50727719 1841 c->layer[1].fec = tvp->u.data;
b6e760f3
PB		 1842 break;
1843 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1844 c->layer[1].modulation = tvp->u.data;
b6e760f3
PB		 1845 break;
1846 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1847 c->layer[1].segment_count = tvp->u.data;
b6e760f3
PB		 1848 break;
1849 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1850 c->layer[1].interleaving = tvp->u.data;
b6e760f3
PB		 1851 break;
1852 case DTV_ISDBT_LAYERC_FEC:
50727719 1853 c->layer[2].fec = tvp->u.data;
b6e760f3
PB		 1854 break;
1855 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1856 c->layer[2].modulation = tvp->u.data;
b6e760f3
PB		 1857 break;
1858 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1859 c->layer[2].segment_count = tvp->u.data;
b6e760f3
PB		 1860 break;
1861 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1862 c->layer[2].interleaving = tvp->u.data;
b6e760f3 1863 break;
287cefd0
EP		 1864
1865 /* Multistream support */
1866 case DTV_STREAM_ID:
1867 case DTV_DVBT2_PLP_ID_LEGACY:
1868 c->stream_id = tvp->u.data;
98293ef3 1869 break;
ca689488
MK		 1870
1871 /* ATSC-MH */
1872 case DTV_ATSCMH_PARADE_ID:
1873 fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
1874 break;
1875 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1876 fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
1877 break;
1878
33eebec5
AP		 1879 case DTV_LNA:
1880 c->lna = tvp->u.data;
1881 if (fe->ops.set_lna)
1882 r = fe->ops.set_lna(fe);
e6876692
MCC		 1883 if (r < 0)
1884 c->lna = LNA_AUTO;
33eebec5
AP		 1885 break;
1886
363429a0 1887 default:
aff8ab5c 1888 return -EINVAL;
6b73eeaf
ST		 1889 }
1890
13c97bf5 1891 return r;
6b73eeaf
ST		 1892}
1893
16ef8def 1894static int dvb_frontend_ioctl(struct file *file,
1da177e4
LT		 1895 unsigned int cmd, void *parg)
1896{
1897 struct dvb_device *dvbdev = file->private_data;
1898 struct dvb_frontend *fe = dvbdev->priv;
50727719 1899 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 1900 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac897586 1901 int err = -EOPNOTSUPP;
1da177e4 1902
36bdbc3f 1903 dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
6ae23224
JL		 1904 if (down_interruptible(&fepriv->sem))
1905 return -ERESTARTSYS;
1906
18ed2860 1907 if (fe->exit != DVB_FE_NO_EXIT) {
6ae23224 1908 up(&fepriv->sem);
1da177e4 1909 return -ENODEV;
6ae23224 1910 }
1da177e4
LT		 1911
1912 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1913 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
6ae23224
JL		 1914 cmd == FE_DISEQC_RECV_SLAVE_REPLY)) {
1915 up(&fepriv->sem);
1da177e4 1916 return -EPERM;
6ae23224 1917 }
1da177e4 1918
13c97bf5 1919 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
16ef8def 1920 err = dvb_frontend_ioctl_properties(file, cmd, parg);
4dd88bec 1921 else {
50727719 1922 c->state = DTV_UNDEFINED;
16ef8def 1923 err = dvb_frontend_ioctl_legacy(file, cmd, parg);
4dd88bec 1924 }
13c97bf5
ST		 1925
1926 up(&fepriv->sem);
1927 return err;
1928}
1929
16ef8def 1930static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1931 unsigned int cmd, void *parg)
1932{
1933 struct dvb_device *dvbdev = file->private_data;
1934 struct dvb_frontend *fe = dvbdev->priv;
51dcb19a 1935 struct dvb_frontend_private *fepriv = fe->frontend_priv;
50727719 1936 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
e6f9ec86 1937 int err = 0;
e7fee0f3 1938
71d1b2be 1939 struct dtv_properties *tvps = parg;
e7fee0f3
ST		 1940 struct dtv_property *tvp = NULL;
1941 int i;
13c97bf5 1942
36bdbc3f 1943 dev_dbg(fe->dvb->device, "%s:\n", __func__);
13c97bf5 1944
71d1b2be 1945 if (cmd == FE_SET_PROPERTY) {
36bdbc3f
AP		 1946 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
1947 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 1948
1949 /* Put an arbitrary limit on the number of messages that can
1950 * be sent at once */
6068f506 1951 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 1952 return -EINVAL;
1953
6e3924aa 1954 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
e7fee0f3
ST		 1955 if (!tvp) {
1956 err = -ENOMEM;
1957 goto out;
6b73eeaf
ST		 1958 }
1959
71d1b2be
MCC		 1960 if (copy_from_user(tvp, (void __user *)tvps->props,
1961 tvps->num * sizeof(struct dtv_property))) {
e7fee0f3
ST		 1962 err = -EFAULT;
1963 goto out;
1964 }
1965
d48cb402 1966 for (i = 0; i < tvps->num; i++) {
aff8ab5c
AO		 1967 err = dtv_property_process_set(fe, tvp + i, file);
1968 if (err < 0)
1969 goto out;
1970 (tvp + i)->result = err;
d48cb402 1971 }
e7fee0f3 1972
50727719 1973 if (c->state == DTV_TUNE)
36bdbc3f 1974 dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
bfbf2dae 1975
71d1b2be 1976 } else if (cmd == FE_GET_PROPERTY) {
bb31d238
MCC		 1977 struct dtv_frontend_properties getp = fe->dtv_property_cache;
1978
36bdbc3f
AP		 1979 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
1980 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 1981
1982 /* Put an arbitrary limit on the number of messages that can
1983 * be sent at once */
6068f506 1984 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 1985 return -EINVAL;
1986
6e3924aa 1987 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
363429a0
ST		 1988 if (!tvp) {
1989 err = -ENOMEM;
1990 goto out;
1991 }
1992
71d1b2be
MCC		 1993 if (copy_from_user(tvp, (void __user *)tvps->props,
1994 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 1995 err = -EFAULT;
1996 goto out;
1997 }
1998
a689e365 1999 /*
bb31d238
MCC		 2000 * Let's use our own copy of property cache, in order to
2001 * avoid mangling with DTV zigzag logic, as drivers might
2002 * return crap, if they don't check if the data is available
2003 * before updating the properties cache.
a689e365 2004 */
51dcb19a 2005 if (fepriv->state != FESTATE_IDLE) {
bb31d238 2006 err = dtv_get_frontend(fe, &getp, NULL);
51dcb19a
MCC		 2007 if (err < 0)
2008 goto out;
2009 }
d48cb402 2010 for (i = 0; i < tvps->num; i++) {
bb31d238 2011 err = dtv_property_process_get(fe, &getp, tvp + i, file);
aff8ab5c
AO		 2012 if (err < 0)
2013 goto out;
2014 (tvp + i)->result = err;
d48cb402 2015 }
363429a0 2016
71d1b2be
MCC		 2017 if (copy_to_user((void __user *)tvps->props, tvp,
2018 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2019 err = -EFAULT;
2020 goto out;
2021 }
2022
363429a0 2023 } else
ac897586 2024 err = -EOPNOTSUPP;
363429a0 2025
e7fee0f3
ST		 2026out:
2027 kfree(tvp);
13c97bf5
ST		 2028 return err;
2029}
2030
5bfaadde 2031static int dtv_set_frontend(struct dvb_frontend *fe)
9682cea2 2032{
9682cea2
MCC		 2033 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2034 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
2035 struct dvb_frontend_tune_settings fetunesettings;
5bfaadde 2036 u32 rolloff = 0;
9682cea2 2037
5bfaadde
MCC		 2038 if (dvb_frontend_check_parameters(fe) < 0)
2039 return -EINVAL;
9682cea2 2040
556a0442
CR		 2041 /*
2042 * Initialize output parameters to match the values given by
2043 * the user. FE_SET_FRONTEND triggers an initial frontend event
2044 * with status = 0, which copies output parameters to userspace.
2045 */
2ea9a08d 2046 dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out);
556a0442 2047
5bfaadde
MCC		 2048 /*
2049 * Be sure that the bandwidth will be filled for all
2050 * non-satellite systems, as tuners need to know what
2051 * low pass/Nyquist half filter should be applied, in
2052 * order to avoid inter-channel noise.
2053 *
2054 * ISDB-T and DVB-T/T2 already sets bandwidth.
2055 * ATSC and DVB-C don't set, so, the core should fill it.
2056 *
2057 * On DVB-C Annex A and C, the bandwidth is a function of
2058 * the roll-off and symbol rate. Annex B defines different
2059 * roll-off factors depending on the modulation. Fortunately,
2060 * Annex B is only used with 6MHz, so there's no need to
2061 * calculate it.
2062 *
2063 * While not officially supported, a side effect of handling it at
2064 * the cache level is that a program could retrieve the bandwidth
2065 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
2066 */
2067 switch (c->delivery_system) {
2068 case SYS_ATSC:
2069 case SYS_DVBC_ANNEX_B:
2070 c->bandwidth_hz = 6000000;
2071 break;
2072 case SYS_DVBC_ANNEX_A:
2073 rolloff = 115;
2074 break;
2075 case SYS_DVBC_ANNEX_C:
2076 rolloff = 113;
2077 break;
c623ed63
MCC		 2078 case SYS_DVBS:
2079 case SYS_TURBO:
8e281faf 2080 case SYS_ISDBS:
c623ed63
MCC		 2081 rolloff = 135;
2082 break;
2083 case SYS_DVBS2:
2084 switch (c->rolloff) {
2085 case ROLLOFF_20:
2086 rolloff = 120;
2087 break;
2088 case ROLLOFF_25:
2089 rolloff = 125;
2090 break;
2091 default:
2092 case ROLLOFF_35:
2093 rolloff = 135;
2094 }
2095 break;
5bfaadde
MCC		 2096 default:
2097 break;
2098 }
2099 if (rolloff)
2a80f296 2100 c->bandwidth_hz = mult_frac(c->symbol_rate, rolloff, 100);
9682cea2
MCC		 2101
2102 /* force auto frequency inversion if requested */
5bfaadde 2103 if (dvb_force_auto_inversion)
9682cea2 2104 c->inversion = INVERSION_AUTO;
5bfaadde
MCC		 2105
2106 /*
2107 * without hierarchical coding code_rate_LP is irrelevant,
2108 * so we tolerate the otherwise invalid FEC_NONE setting
2109 */
2110 if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
2111 c->code_rate_LP = FEC_AUTO;
9682cea2
MCC		 2112
2113 /* get frontend-specific tuning settings */
5bfaadde 2114 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
9682cea2
MCC		 2115 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
2116 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
2117 fepriv->max_drift = fetunesettings.max_drift;
2118 fepriv->step_size = fetunesettings.step_size;
2119 } else {
2120 /* default values */
5bfaadde 2121 switch (c->delivery_system) {
910a5f2e
MCC		 2122 case SYS_DVBS:
2123 case SYS_DVBS2:
2124 case SYS_ISDBS:
2125 case SYS_TURBO:
5bfaadde
MCC		 2126 case SYS_DVBC_ANNEX_A:
2127 case SYS_DVBC_ANNEX_C:
2128 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2129 fepriv->step_size = c->symbol_rate / 16000;
2130 fepriv->max_drift = c->symbol_rate / 2000;
2131 break;
5bfaadde
MCC		 2132 case SYS_DVBT:
2133 case SYS_DVBT2:
2134 case SYS_ISDBT:
224b6642 2135 case SYS_DTMB:
5bfaadde 2136 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2137 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
2138 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
2139 break;
5bfaadde
MCC		 2140 default:
2141 /*
2142 * FIXME: This sounds wrong! if freqency_stepsize is
2143 * defined by the frontend, why not use it???
2144 */
2145 fepriv->min_delay = HZ / 20;
2146 fepriv->step_size = 0; /* no zigzag */
9682cea2
MCC		 2147 fepriv->max_drift = 0;
2148 break;
2149 }
2150 }
2151 if (dvb_override_tune_delay > 0)
2152 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
2153
2154 fepriv->state = FESTATE_RETUNE;
2155
2156 /* Request the search algorithm to search */
2157 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
2158
2159 dvb_frontend_clear_events(fe);
2160 dvb_frontend_add_event(fe, 0);
2161 dvb_frontend_wakeup(fe);
2162 fepriv->status = 0;
2163
2164 return 0;
2165}
2166
2167
16ef8def 2168static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5
ST		 2169 unsigned int cmd, void *parg)
2170{
2171 struct dvb_device *dvbdev = file->private_data;
2172 struct dvb_frontend *fe = dvbdev->priv;
2173 struct dvb_frontend_private *fepriv = fe->frontend_priv;
5bfaadde 2174 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
ac897586 2175 int err = -EOPNOTSUPP;
13c97bf5 2176
1da177e4
LT		 2177 switch (cmd) {
2178 case FE_GET_INFO: {
0c53c70f 2179 struct dvb_frontend_info* info = parg;
9474c5e6 2180
dea74869 2181 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
2030c032 2182 dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4 2183
5bfaadde
MCC		 2184 /*
2185 * Associate the 4 delivery systems supported by DVBv3
2186 * API with their DVBv5 counterpart. For the other standards,
2187 * use the closest type, assuming that it would hopefully
2188 * work with a DVBv3 application.
2189 * It should be noticed that, on multi-frontend devices with
2190 * different types (terrestrial and cable, for example),
2191 * a pure DVBv3 application won't be able to use all delivery
2192 * systems. Yet, changing the DVBv5 cache to the other delivery
2193 * system should be enough for making it work.
2194 */
2195 switch (dvbv3_type(c->delivery_system)) {
2196 case DVBV3_QPSK:
9474c5e6 2197 info->type = FE_QPSK;
5bfaadde
MCC		 2198 break;
2199 case DVBV3_ATSC:
9474c5e6 2200 info->type = FE_ATSC;
5bfaadde
MCC		 2201 break;
2202 case DVBV3_QAM:
9474c5e6 2203 info->type = FE_QAM;
5bfaadde
MCC		 2204 break;
2205 case DVBV3_OFDM:
9474c5e6 2206 info->type = FE_OFDM;
5bfaadde
MCC		 2207 break;
2208 default:
36bdbc3f
AP		 2209 dev_err(fe->dvb->device,
2210 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
2211 __func__, c->delivery_system);
5bfaadde
MCC		 2212 fe->ops.info.type = FE_OFDM;
2213 }
36bdbc3f
AP		 2214 dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
2215 __func__, c->delivery_system, fe->ops.info.type);
5bfaadde 2216
c9d57de6
MP		 2217 /* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */
2218 if (!(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT))
2219 info->caps |= FE_CAN_INVERSION_AUTO;
1da177e4
LT		 2220 err = 0;
2221 break;
2222 }
2223
6757ccc5 2224 case FE_READ_STATUS: {
0df289a2 2225 enum fe_status *status = parg;
6757ccc5 2226
25985edc 2227 /* if retune was requested but hasn't occurred yet, prevent
6757ccc5 2228 * that user get signal state from previous tuning */
01886255
JG		 2229 if (fepriv->state == FESTATE_RETUNE ||
2230 fepriv->state == FESTATE_ERROR) {
6757ccc5
PB		 2231 err=0;
2232 *status = 0;
2233 break;
2234 }
2235
dea74869
PB		 2236 if (fe->ops.read_status)
2237 err = fe->ops.read_status(fe, status);
1da177e4 2238 break;
6757ccc5 2239 }
48caa6f1 2240
1da177e4 2241 case FE_READ_BER:
48caa6f1
AP		 2242 if (fe->ops.read_ber) {
2243 if (fepriv->thread)
2244 err = fe->ops.read_ber(fe, (__u32 *) parg);
2245 else
2246 err = -EAGAIN;
2247 }
1da177e4
LT		 2248 break;
2249
2250 case FE_READ_SIGNAL_STRENGTH:
48caa6f1
AP		 2251 if (fe->ops.read_signal_strength) {
2252 if (fepriv->thread)
2253 err = fe->ops.read_signal_strength(fe, (__u16 *) parg);
2254 else
2255 err = -EAGAIN;
2256 }
1da177e4
LT		 2257 break;
2258
2259 case FE_READ_SNR:
48caa6f1
AP		 2260 if (fe->ops.read_snr) {
2261 if (fepriv->thread)
2262 err = fe->ops.read_snr(fe, (__u16 *) parg);
2263 else
2264 err = -EAGAIN;
2265 }
1da177e4
LT		 2266 break;
2267
2268 case FE_READ_UNCORRECTED_BLOCKS:
48caa6f1
AP		 2269 if (fe->ops.read_ucblocks) {
2270 if (fepriv->thread)
2271 err = fe->ops.read_ucblocks(fe, (__u32 *) parg);
2272 else
2273 err = -EAGAIN;
2274 }
1da177e4
LT		 2275 break;
2276
1da177e4 2277 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 2278 if (fe->ops.diseqc_reset_overload) {
2279 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 2280 fepriv->state = FESTATE_DISEQC;
2281 fepriv->status = 0;
2282 }
2283 break;
2284
2285 case FE_DISEQC_SEND_MASTER_CMD:
dea74869 2286 if (fe->ops.diseqc_send_master_cmd) {
8d7e5063
DC		 2287 struct dvb_diseqc_master_cmd *cmd = parg;
2288
2289 if (cmd->msg_len > sizeof(cmd->msg)) {
2290 err = -EINVAL;
2291 break;
2292 }
2293 err = fe->ops.diseqc_send_master_cmd(fe, cmd);
1da177e4
LT		 2294 fepriv->state = FESTATE_DISEQC;
2295 fepriv->status = 0;
2296 }
2297 break;
2298
2299 case FE_DISEQC_SEND_BURST:
dea74869 2300 if (fe->ops.diseqc_send_burst) {
0df289a2
MCC		 2301 err = fe->ops.diseqc_send_burst(fe,
2302 (enum fe_sec_mini_cmd)parg);
1da177e4
LT		 2303 fepriv->state = FESTATE_DISEQC;
2304 fepriv->status = 0;
2305 }
2306 break;
2307
2308 case FE_SET_TONE:
dea74869 2309 if (fe->ops.set_tone) {
0df289a2
MCC		 2310 err = fe->ops.set_tone(fe,
2311 (enum fe_sec_tone_mode)parg);
2312 fepriv->tone = (enum fe_sec_tone_mode)parg;
1da177e4
LT		 2313 fepriv->state = FESTATE_DISEQC;
2314 fepriv->status = 0;
2315 }
2316 break;
2317
2318 case FE_SET_VOLTAGE:
dea74869 2319 if (fe->ops.set_voltage) {
0df289a2
MCC		 2320 err = fe->ops.set_voltage(fe,
2321 (enum fe_sec_voltage)parg);
2322 fepriv->voltage = (enum fe_sec_voltage)parg;
1da177e4
LT		 2323 fepriv->state = FESTATE_DISEQC;
2324 fepriv->status = 0;
2325 }
2326 break;
2327
2328 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869 2329 if (fe->ops.dishnetwork_send_legacy_command) {
0df289a2
MCC		 2330 err = fe->ops.dishnetwork_send_legacy_command(fe,
2331 (unsigned long)parg);
1da177e4
LT		 2332 fepriv->state = FESTATE_DISEQC;
2333 fepriv->status = 0;
dea74869 2334 } else if (fe->ops.set_voltage) {
83b75b04
N		 2335 /*
2336 * NOTE: This is a fallback condition. Some frontends
2337 * (stv0299 for instance) take longer than 8msec to
2338 * respond to a set_voltage command. Those switches
2339 * need custom routines to switch properly. For all
2030c032 2340 * other frontends, the following should work ok.
83b75b04
N		 2341 * Dish network legacy switches (as used by Dish500)
2342 * are controlled by sending 9-bit command words
2343 * spaced 8msec apart.
25985edc 2344 * the actual command word is switch/port dependent
83b75b04
N		 2345 * so it is up to the userspace application to send
2346 * the right command.
2347 * The command must always start with a '0' after
2348 * initialization, so parg is 8 bits and does not
2349 * include the initialization or start bit
2350 */
c6eb8eaf 2351 unsigned long swcmd = ((unsigned long) parg) << 1;
9056a23b
TR		 2352 ktime_t nexttime;
2353 ktime_t tv[10];
83b75b04
N		 2354 int i;
2355 u8 last = 1;
2356 if (dvb_frontend_debug)
c6eb8eaf 2357 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
6b3f9998 2358 nexttime = ktime_get_boottime();
83b75b04 2359 if (dvb_frontend_debug)
b9b1b3a8 2360 tv[0] = nexttime;
83b75b04
N		 2361 /* before sending a command, initialize by sending
2362 * a 32ms 18V to the switch
2363 */
dea74869 2364 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 2365 dvb_frontend_sleep_until(&nexttime, 32000);
2366
2367 for (i = 0; i < 9; i++) {
2368 if (dvb_frontend_debug)
6b3f9998 2369 tv[i+1] = ktime_get_boottime();
c6eb8eaf 2370 if ((swcmd & 0x01) != last) {
83b75b04 2371 /* set voltage to (last ? 13V : 18V) */
dea74869 2372 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 2373 last = (last) ? 0 : 1;
2374 }
c6eb8eaf 2375 swcmd = swcmd >> 1;
83b75b04
N		 2376 if (i != 8)
2377 dvb_frontend_sleep_until(&nexttime, 8000);
2378 }
2379 if (dvb_frontend_debug) {
2380 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 2381 __func__, fe->dvb->num);
83b75b04 2382 for (i = 1; i < 10; i++)
9056a23b
TR		 2383 printk("%d: %d\n", i,
2384 (int) ktime_us_delta(tv[i], tv[i-1]));
83b75b04
N		 2385 }
2386 err = 0;
2387 fepriv->state = FESTATE_DISEQC;
2388 fepriv->status = 0;
1da177e4
LT		 2389 }
2390 break;
2391
2392 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 2393 if (fe->ops.diseqc_recv_slave_reply)
2394 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 2395 break;
2396
2397 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 2398 if (fe->ops.enable_high_lnb_voltage)
2399 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 2400 break;
2401
9682cea2 2402 case FE_SET_FRONTEND:
be431b16 2403 err = dvbv3_set_delivery_system(fe);
04be0f76
MCC		 2404 if (err)
2405 break;
2406
e399ce77 2407 err = dtv_property_cache_sync(fe, c, parg);
5bfaadde
MCC		 2408 if (err)
2409 break;
2410 err = dtv_set_frontend(fe);
1da177e4 2411 break;
1da177e4
LT		 2412 case FE_GET_EVENT:
2413 err = dvb_frontend_get_event (fe, parg, file->f_flags);
2414 break;
2415
bb31d238
MCC		 2416 case FE_GET_FRONTEND: {
2417 struct dtv_frontend_properties getp = fe->dtv_property_cache;
36cb557a 2418
bb31d238
MCC		 2419 /*
2420 * Let's use our own copy of property cache, in order to
2421 * avoid mangling with DTV zigzag logic, as drivers might
2422 * return crap, if they don't check if the data is available
2423 * before updating the properties cache.
2424 */
2425 err = dtv_get_frontend(fe, &getp, parg);
2426 break;
2427 }
36cb557a 2428 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 2429 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 2430 err = 0;
36cb557a 2431 break;
c2c1b415 2432 }
1da177e4 2433
1da177e4
LT		 2434 return err;
2435}
2436
6b73eeaf 2437
1da177e4
LT		 2438static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
2439{
2440 struct dvb_device *dvbdev = file->private_data;
2441 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2442 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 2443
36bdbc3f 2444 dev_dbg_ratelimited(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 2445
2446 poll_wait (file, &fepriv->events.wait_queue, wait);
2447
2448 if (fepriv->events.eventw != fepriv->events.eventr)
2449 return (POLLIN | POLLRDNORM | POLLPRI);
2450
2451 return 0;
2452}
2453
2454static int dvb_frontend_open(struct inode *inode, struct file *file)
2455{
2456 struct dvb_device *dvbdev = file->private_data;
2457 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2458 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 2459 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 2460 int ret;
2461
36bdbc3f 2462 dev_dbg(fe->dvb->device, "%s:\n", __func__);
18ed2860 2463 if (fe->exit == DVB_FE_DEVICE_REMOVED)
e36309f5 2464 return -ENODEV;
1da177e4 2465
59b1842d
DB		 2466 if (adapter->mfe_shared) {
2467 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 2468
2469 if (adapter->mfe_dvbdev == NULL)
2470 adapter->mfe_dvbdev = dvbdev;
2471
2472 else if (adapter->mfe_dvbdev != dvbdev) {
2473 struct dvb_device
2474 *mfedev = adapter->mfe_dvbdev;
2475 struct dvb_frontend
2476 *mfe = mfedev->priv;
2477 struct dvb_frontend_private
2478 *mfepriv = mfe->frontend_priv;
2479 int mferetry = (dvb_mfe_wait_time << 1);
2480
2481 mutex_unlock (&adapter->mfe_lock);
2482 while (mferetry-- && (mfedev->users != -1 ||
2483 mfepriv->thread != NULL)) {
2484 if(msleep_interruptible(500)) {
2485 if(signal_pending(current))
2486 return -EINTR;
59b1842d 2487 }
6594690b
DB		 2488 }
2489
2490 mutex_lock (&adapter->mfe_lock);
2491 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 2492 mfedev = adapter->mfe_dvbdev;
2493 mfe = mfedev->priv;
2494 mfepriv = mfe->frontend_priv;
6594690b
DB		 2495 if (mfedev->users != -1 ||
2496 mfepriv->thread != NULL) {
2497 mutex_unlock (&adapter->mfe_lock);
2498 return -EBUSY;
59b1842d 2499 }
6594690b 2500 adapter->mfe_dvbdev = dvbdev;
59b1842d 2501 }
59b1842d
DB		 2502 }
2503 }
2504
48136e1e
OE		 2505 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
2506 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 2507 goto err0;
2d196931
DH		 2508
2509 /* If we took control of the bus, we need to force
2510 reinitialization. This is because many ts_bus_ctrl()
2511 functions strobe the RESET pin on the demod, and if the
2512 frontend thread already exists then the dvb_init() routine
2513 won't get called (which is what usually does initial
2514 register configuration). */
2515 fepriv->reinitialise = 1;
ba7e6f3e
ST		 2516 }
2517
48136e1e
OE		 2518 if ((ret = dvb_generic_open (inode, file)) < 0)
2519 goto err1;
04c56d0e 2520
48136e1e 2521 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 2522 /* normal tune mode when opened R/W */
2523 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
2524 fepriv->tone = -1;
2525 fepriv->voltage = -1;
2526
68ff5767
SK		 2527#ifdef CONFIG_MEDIA_CONTROLLER_DVB
2528 if (fe->dvb->mdev && fe->dvb->mdev->enable_source) {
2529 ret = fe->dvb->mdev->enable_source(dvbdev->entity,
2530 &fepriv->pipe);
2531 if (ret) {
2532 dev_err(fe->dvb->device,
2533 "Tuner is busy. Error %d\n", ret);
2534 goto err2;
2535 }
2536 }
2537#endif
1da177e4
LT		 2538 ret = dvb_frontend_start (fe);
2539 if (ret)
68ff5767 2540 goto err3;
1da177e4
LT		 2541
2542 /* empty event queue */
2543 fepriv->events.eventr = fepriv->events.eventw = 0;
2544 }
2545
59b1842d
DB		 2546 if (adapter->mfe_shared)
2547 mutex_unlock (&adapter->mfe_lock);
1da177e4 2548 return ret;
48136e1e 2549
68ff5767
SK		 2550err3:
2551#ifdef CONFIG_MEDIA_CONTROLLER_DVB
2552 if (fe->dvb->mdev && fe->dvb->mdev->disable_source)
2553 fe->dvb->mdev->disable_source(dvbdev->entity);
48136e1e 2554err2:
68ff5767 2555#endif
48136e1e
OE		 2556 dvb_generic_release(inode, file);
2557err1:
2558 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
2559 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 2560err0:
2561 if (adapter->mfe_shared)
2562 mutex_unlock (&adapter->mfe_lock);
48136e1e 2563 return ret;
1da177e4
LT		 2564}
2565
2566static int dvb_frontend_release(struct inode *inode, struct file *file)
2567{
2568 struct dvb_device *dvbdev = file->private_data;
2569 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2570 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 2571 int ret;
1da177e4 2572
36bdbc3f 2573 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2574
b9d5efcc 2575 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1da177e4 2576 fepriv->release_jiffies = jiffies;
b9d5efcc
AO		 2577 mb();
2578 }
1da177e4 2579
ca5be9cd
MR		 2580 ret = dvb_generic_release (inode, file);
2581
48136e1e 2582 if (dvbdev->users == -1) {
b9d5efcc 2583 wake_up(&fepriv->wait_queue);
68ff5767
SK		 2584#ifdef CONFIG_MEDIA_CONTROLLER_DVB
2585 if (fe->dvb->mdev && fe->dvb->mdev->disable_source)
2586 fe->dvb->mdev->disable_source(dvbdev->entity);
2587#endif
18ed2860 2588 if (fe->exit != DVB_FE_NO_EXIT)
48136e1e 2589 wake_up(&dvbdev->wait_queue);
48136e1e
OE		 2590 if (fe->ops.ts_bus_ctrl)
2591 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 2592 }
48136e1e 2593
ca5be9cd 2594 return ret;
1da177e4
LT		 2595}
2596
784e29d2 2597static const struct file_operations dvb_frontend_fops = {
1da177e4 2598 .owner = THIS_MODULE,
16ef8def 2599 .unlocked_ioctl = dvb_generic_ioctl,
1da177e4
LT		 2600 .poll = dvb_frontend_poll,
2601 .open = dvb_frontend_open,
6038f373
AB		 2602 .release = dvb_frontend_release,
2603 .llseek = noop_llseek,
1da177e4
LT		 2604};
2605
06bae122
AP		 2606int dvb_frontend_suspend(struct dvb_frontend *fe)
2607{
2608 int ret = 0;
2609
2610 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2611 fe->id);
2612
59d7889a
MCC		 2613 if (fe->ops.tuner_ops.suspend)
2614 ret = fe->ops.tuner_ops.suspend(fe);
2615 else if (fe->ops.tuner_ops.sleep)
06bae122
AP		 2616 ret = fe->ops.tuner_ops.sleep(fe);
2617
2618 if (fe->ops.sleep)
2619 ret = fe->ops.sleep(fe);
2620
2621 return ret;
2622}
2623EXPORT_SYMBOL(dvb_frontend_suspend);
2624
2625int dvb_frontend_resume(struct dvb_frontend *fe)
2626{
2627 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2628 int ret = 0;
2629
2630 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2631 fe->id);
2632
87cd0fa8 2633 fe->exit = DVB_FE_DEVICE_RESUME;
06bae122
AP		 2634 if (fe->ops.init)
2635 ret = fe->ops.init(fe);
2636
59d7889a
MCC		 2637 if (fe->ops.tuner_ops.resume)
2638 ret = fe->ops.tuner_ops.resume(fe);
2639 else if (fe->ops.tuner_ops.init)
06bae122
AP		 2640 ret = fe->ops.tuner_ops.init(fe);
2641
3663b31b
MCC		 2642 if (fe->ops.set_tone && fepriv->tone != -1)
2643 fe->ops.set_tone(fe, fepriv->tone);
2644 if (fe->ops.set_voltage && fepriv->voltage != -1)
2645 fe->ops.set_voltage(fe, fepriv->voltage);
2646
87cd0fa8 2647 fe->exit = DVB_FE_NO_EXIT;
06bae122
AP		 2648 fepriv->state = FESTATE_RETUNE;
2649 dvb_frontend_wakeup(fe);
2650
2651 return ret;
2652}
2653EXPORT_SYMBOL(dvb_frontend_resume);
2654
1da177e4
LT		 2655int dvb_register_frontend(struct dvb_adapter* dvb,
2656 struct dvb_frontend* fe)
2657{
2658 struct dvb_frontend_private *fepriv;
c1b31b1e 2659 const struct dvb_device dvbdev_template = {
1da177e4
LT		 2660 .users = ~0,
2661 .writers = 1,
2662 .readers = (~0)-1,
2663 .fops = &dvb_frontend_fops,
c1b31b1e
MCC		 2664#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
2665 .name = fe->ops.info.name,
2666#endif
1da177e4
LT		 2667 .kernel_ioctl = dvb_frontend_ioctl
2668 };
2669
36bdbc3f 2670 dev_dbg(dvb->device, "%s:\n", __func__);
1da177e4 2671
3593cab5 2672 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 2673 return -ERESTARTSYS;
2674
7408187d 2675 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 2676 if (fe->frontend_priv == NULL) {
3593cab5 2677 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2678 return -ENOMEM;
2679 }
0c53c70f 2680 fepriv = fe->frontend_priv;
1da177e4 2681
a0a4714c 2682 sema_init(&fepriv->sem, 1);
1da177e4
LT		 2683 init_waitqueue_head (&fepriv->wait_queue);
2684 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 2685 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 2686 fe->dvb = dvb;
2687 fepriv->inversion = INVERSION_OFF;
2688
36bdbc3f
AP		 2689 dev_info(fe->dvb->device,
2690 "DVB: registering adapter %i frontend %i (%s)...\n",
2691 fe->dvb->num, fe->id, fe->ops.info.name);
1da177e4
LT		 2692
2693 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
df2f94e5 2694 fe, DVB_DEVICE_FRONTEND, 0);
1da177e4 2695
5bfaadde
MCC		 2696 /*
2697 * Initialize the cache to the proper values according with the
2698 * first supported delivery system (ops->delsys[0])
2699 */
240ab508 2700
be431b16 2701 fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
5bfaadde
MCC		 2702 dvb_frontend_clear_cache(fe);
2703
3593cab5 2704 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2705 return 0;
2706}
2707EXPORT_SYMBOL(dvb_register_frontend);
2708
2709int dvb_unregister_frontend(struct dvb_frontend* fe)
2710{
0c53c70f 2711 struct dvb_frontend_private *fepriv = fe->frontend_priv;
36bdbc3f 2712 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2713
57861b43 2714 mutex_lock(&frontend_mutex);
ca5be9cd 2715 dvb_frontend_stop (fe);
57861b43
MR		 2716 mutex_unlock(&frontend_mutex);
2717
2718 if (fepriv->dvbdev->users < -1)
2719 wait_event(fepriv->dvbdev->wait_queue,
2720 fepriv->dvbdev->users==-1);
2721
3593cab5 2722 mutex_lock(&frontend_mutex);
1da177e4 2723 dvb_unregister_device (fepriv->dvbdev);
d9955060 2724
1da177e4
LT		 2725 /* fe is invalid now */
2726 kfree(fepriv);
3593cab5 2727 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2728 return 0;
2729}
2730EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 2731
149ef72d 2732#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 2733void dvb_frontend_detach(struct dvb_frontend* fe)
2734{
2735 void *ptr;
2736
2737 if (fe->ops.release_sec) {
2738 fe->ops.release_sec(fe);
4647f487 2739 dvb_detach(fe->ops.release_sec);
f52a838b
AQ		 2740 }
2741 if (fe->ops.tuner_ops.release) {
2742 fe->ops.tuner_ops.release(fe);
4647f487 2743 dvb_detach(fe->ops.tuner_ops.release);
f52a838b 2744 }
2426a27e
MK		 2745 if (fe->ops.analog_ops.release) {
2746 fe->ops.analog_ops.release(fe);
4647f487 2747 dvb_detach(fe->ops.analog_ops.release);
2426a27e 2748 }
f52a838b
AQ		 2749 ptr = (void*)fe->ops.release;
2750 if (ptr) {
2751 fe->ops.release(fe);
4647f487 2752 dvb_detach(ptr);
f52a838b
AQ		 2753 }
2754}
2755#else
2756void dvb_frontend_detach(struct dvb_frontend* fe)
2757{
2758 if (fe->ops.release_sec)
2759 fe->ops.release_sec(fe);
2760 if (fe->ops.tuner_ops.release)
2761 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 2762 if (fe->ops.analog_ops.release)
2763 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 2764 if (fe->ops.release)
2765 fe->ops.release(fe);
2766}
2767#endif
2768EXPORT_SYMBOL(dvb_frontend_detach);
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