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[media] device-drivers.tmpl: better organize DVB function calls
[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb-core / dvb_frontend.c
CommitLineData
1da177e4
LT		 1/*
2 * dvb_frontend.c: DVB frontend tuning interface/thread
3 *
4 *
5 * Copyright (C) 1999-2001 Ralph Metzler
6 * Marcus Metzler
7 * Holger Waechtler
8 * for convergence integrated media GmbH
9 *
10 * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
26 */
27
8de8594a
MCC		 28/* Enables DVBv3 compatibility bits at the headers */
29#define __DVB_CORE__
30
1da177e4
LT		 31#include <linux/string.h>
32#include <linux/kernel.h>
33#include <linux/sched.h>
34#include <linux/wait.h>
35#include <linux/slab.h>
36#include <linux/poll.h>
4c4cb1b1 37#include <linux/semaphore.h>
1da177e4 38#include <linux/module.h>
1da177e4 39#include <linux/list.h>
7dfb7103 40#include <linux/freezer.h>
cc89c229 41#include <linux/jiffies.h>
8eec1429 42#include <linux/kthread.h>
9056a23b 43#include <linux/ktime.h>
1da177e4 44#include <asm/processor.h>
1da177e4
LT		 45
46#include "dvb_frontend.h"
47#include "dvbdev.h"
eacf8d8d 48#include <linux/dvb/version.h>
1da177e4
LT		 49
50static int dvb_frontend_debug;
849be2cd 51static int dvb_shutdown_timeout;
1da177e4
LT		 52static int dvb_force_auto_inversion;
53static int dvb_override_tune_delay;
54static int dvb_powerdown_on_sleep = 1;
59b1842d 55static int dvb_mfe_wait_time = 5;
1da177e4
LT		 56
57module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 58MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 59module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 60MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 61module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 62MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 63module_param(dvb_override_tune_delay, int, 0644);
1da177e4 64MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 65module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 66MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 67module_param(dvb_mfe_wait_time, int, 0644);
68MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
1da177e4 69
1da177e4
LT		 70#define FESTATE_IDLE 1
71#define FESTATE_RETUNE 2
72#define FESTATE_TUNING_FAST 4
73#define FESTATE_TUNING_SLOW 8
74#define FESTATE_TUNED 16
75#define FESTATE_ZIGZAG_FAST 32
76#define FESTATE_ZIGZAG_SLOW 64
77#define FESTATE_DISEQC 128
01886255 78#define FESTATE_ERROR 256
1da177e4
LT		 79#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
80#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
81#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
82#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16 83
1da177e4
LT		 84/*
85 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
86 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
87 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
88 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
89 * FESTATE_TUNED. The frontend has successfully locked on.
90 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
91 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
92 * FESTATE_DISEQC. A DISEQC command has just been issued.
93 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
94 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
95 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
96 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
97 */
98
3593cab5 99static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 100
101struct dvb_frontend_private {
102
36cb557a 103 /* thread/frontend values */
1da177e4 104 struct dvb_device *dvbdev;
a5959dbe 105 struct dvb_frontend_parameters parameters_out;
1da177e4
LT		 106 struct dvb_fe_events events;
107 struct semaphore sem;
108 struct list_head list_head;
109 wait_queue_head_t wait_queue;
8eec1429 110 struct task_struct *thread;
1da177e4 111 unsigned long release_jiffies;
36cb557a 112 unsigned int wakeup;
0df289a2 113 enum fe_status status;
400b7083 114 unsigned long tune_mode_flags;
36cb557a 115 unsigned int delay;
86f40cc3 116 unsigned int reinitialise;
64454016
AQ		 117 int tone;
118 int voltage;
36cb557a
AQ		 119
120 /* swzigzag values */
121 unsigned int state;
122 unsigned int bending;
123 int lnb_drift;
124 unsigned int inversion;
125 unsigned int auto_step;
126 unsigned int auto_sub_step;
127 unsigned int started_auto_step;
128 unsigned int min_delay;
129 unsigned int max_drift;
130 unsigned int step_size;
131 int quality;
132 unsigned int check_wrapped;
c59e7870 133 enum dvbfe_search algo_status;
135f9be9
MCC		 134
135#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
136 struct media_pipeline pipe;
137 struct media_entity *pipe_start_entity;
138#endif
1da177e4
LT		 139};
140
86f40cc3 141static void dvb_frontend_wakeup(struct dvb_frontend *fe);
a689e365 142static int dtv_get_frontend(struct dvb_frontend *fe,
a689e365 143 struct dvb_frontend_parameters *p_out);
556a0442
CR		 144static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
145 struct dvb_frontend_parameters *p);
a689e365
MCC		 146
147static bool has_get_frontend(struct dvb_frontend *fe)
148{
c065f5b4 149 return fe->ops.get_frontend != NULL;
a689e365 150}
1da177e4 151
5bfaadde
MCC		 152/*
153 * Due to DVBv3 API calls, a delivery system should be mapped into one of
154 * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
155 * otherwise, a DVBv3 call will fail.
156 */
157enum dvbv3_emulation_type {
158 DVBV3_UNKNOWN,
159 DVBV3_QPSK,
160 DVBV3_QAM,
161 DVBV3_OFDM,
162 DVBV3_ATSC,
163};
164
165static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system)
166{
167 switch (delivery_system) {
168 case SYS_DVBC_ANNEX_A:
169 case SYS_DVBC_ANNEX_C:
170 return DVBV3_QAM;
171 case SYS_DVBS:
172 case SYS_DVBS2:
173 case SYS_TURBO:
174 case SYS_ISDBS:
175 case SYS_DSS:
176 return DVBV3_QPSK;
177 case SYS_DVBT:
178 case SYS_DVBT2:
179 case SYS_ISDBT:
224b6642 180 case SYS_DTMB:
5bfaadde
MCC		 181 return DVBV3_OFDM;
182 case SYS_ATSC:
ca689488 183 case SYS_ATSCMH:
5bfaadde
MCC		 184 case SYS_DVBC_ANNEX_B:
185 return DVBV3_ATSC;
186 case SYS_UNDEFINED:
187 case SYS_ISDBC:
188 case SYS_DVBH:
189 case SYS_DAB:
5bfaadde
MCC		 190 default:
191 /*
192 * Doesn't know how to emulate those types and/or
193 * there's no frontend driver from this type yet
194 * with some emulation code, so, we're not sure yet how
195 * to handle them, or they're not compatible with a DVBv3 call.
196 */
197 return DVBV3_UNKNOWN;
198 }
199}
200
0df289a2
MCC		 201static void dvb_frontend_add_event(struct dvb_frontend *fe,
202 enum fe_status status)
1da177e4 203{
0c53c70f 204 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 205 struct dvb_fe_events *events = &fepriv->events;
206 struct dvb_frontend_event *e;
207 int wp;
208
36bdbc3f 209 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 210
a689e365 211 if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
7c61d80a 212 dtv_get_frontend(fe, &fepriv->parameters_out);
1da177e4 213
77b1e2fb 214 mutex_lock(&events->mtx);
1da177e4 215
77b1e2fb 216 wp = (events->eventw + 1) % MAX_EVENT;
1da177e4
LT		 217 if (wp == events->eventr) {
218 events->overflow = 1;
219 events->eventr = (events->eventr + 1) % MAX_EVENT;
220 }
221
222 e = &events->events[events->eventw];
77b1e2fb 223 e->status = status;
a5959dbe 224 e->parameters = fepriv->parameters_out;
1da177e4
LT		 225
226 events->eventw = wp;
227
03b76123 228 mutex_unlock(&events->mtx);
1da177e4 229
1da177e4
LT		 230 wake_up_interruptible (&events->wait_queue);
231}
232
233static int dvb_frontend_get_event(struct dvb_frontend *fe,
234 struct dvb_frontend_event *event, int flags)
235{
0c53c70f 236 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 237 struct dvb_fe_events *events = &fepriv->events;
238
36bdbc3f 239 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 240
241 if (events->overflow) {
242 events->overflow = 0;
243 return -EOVERFLOW;
244 }
245
246 if (events->eventw == events->eventr) {
247 int ret;
248
249 if (flags & O_NONBLOCK)
250 return -EWOULDBLOCK;
251
252 up(&fepriv->sem);
253
254 ret = wait_event_interruptible (events->wait_queue,
255 events->eventw != events->eventr);
256
257 if (down_interruptible (&fepriv->sem))
258 return -ERESTARTSYS;
259
260 if (ret < 0)
261 return ret;
262 }
263
77b1e2fb
AO		 264 mutex_lock(&events->mtx);
265 *event = events->events[events->eventr];
1da177e4 266 events->eventr = (events->eventr + 1) % MAX_EVENT;
03b76123 267 mutex_unlock(&events->mtx);
1da177e4
LT		 268
269 return 0;
270}
271
20640bea
AO		 272static void dvb_frontend_clear_events(struct dvb_frontend *fe)
273{
274 struct dvb_frontend_private *fepriv = fe->frontend_priv;
275 struct dvb_fe_events *events = &fepriv->events;
276
277 mutex_lock(&events->mtx);
278 events->eventr = events->eventw;
279 mutex_unlock(&events->mtx);
280}
281
1da177e4
LT		 282static void dvb_frontend_init(struct dvb_frontend *fe)
283{
36bdbc3f
AP		 284 dev_dbg(fe->dvb->device,
285 "%s: initialising adapter %i frontend %i (%s)...\n",
286 __func__, fe->dvb->num, fe->id, fe->ops.info.name);
dea74869
PB		 287
288 if (fe->ops.init)
289 fe->ops.init(fe);
290 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 291 if (fe->ops.i2c_gate_ctrl)
292 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 293 fe->ops.tuner_ops.init(fe);
294 if (fe->ops.i2c_gate_ctrl)
295 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 296 }
1da177e4
LT		 297}
298
86f40cc3
AQ		 299void dvb_frontend_reinitialise(struct dvb_frontend *fe)
300{
301 struct dvb_frontend_private *fepriv = fe->frontend_priv;
302
303 fepriv->reinitialise = 1;
304 dvb_frontend_wakeup(fe);
305}
306EXPORT_SYMBOL(dvb_frontend_reinitialise);
307
36cb557a 308static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 309{
36cb557a 310 int q2;
36bdbc3f 311 struct dvb_frontend *fe = fepriv->dvbdev->priv;
1da177e4 312
36bdbc3f 313 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 314
36cb557a
AQ		 315 if (locked)
316 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
317 else
318 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 319
36cb557a
AQ		 320 q2 = fepriv->quality - 128;
321 q2 *= q2;
1da177e4 322
36cb557a 323 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 324}
325
326/**
327 * Performs automatic twiddling of frontend parameters.
328 *
329 * @param fe The frontend concerned.
330 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
331 * @returns Number of complete iterations that have been performed.
332 */
36cb557a 333static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 334{
335 int autoinversion;
336 int ready = 0;
01886255 337 int fe_set_err = 0;
0c53c70f 338 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4
MCC		 339 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
340 int original_inversion = c->inversion;
341 u32 original_frequency = c->frequency;
1da177e4
LT		 342
343 /* are we using autoinversion? */
dea74869 344 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4 345 (c->inversion == INVERSION_AUTO));
1da177e4
LT		 346
347 /* setup parameters correctly */
348 while(!ready) {
349 /* calculate the lnb_drift */
350 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
351
352 /* wrap the auto_step if we've exceeded the maximum drift */
353 if (fepriv->lnb_drift > fepriv->max_drift) {
354 fepriv->auto_step = 0;
355 fepriv->auto_sub_step = 0;
356 fepriv->lnb_drift = 0;
357 }
358
359 /* perform inversion and +/- zigzag */
360 switch(fepriv->auto_sub_step) {
361 case 0:
362 /* try with the current inversion and current drift setting */
363 ready = 1;
364 break;
365
366 case 1:
367 if (!autoinversion) break;
368
369 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
370 ready = 1;
371 break;
372
373 case 2:
374 if (fepriv->lnb_drift == 0) break;
375
376 fepriv->lnb_drift = -fepriv->lnb_drift;
377 ready = 1;
378 break;
379
380 case 3:
381 if (fepriv->lnb_drift == 0) break;
382 if (!autoinversion) break;
383
384 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
385 fepriv->lnb_drift = -fepriv->lnb_drift;
386 ready = 1;
387 break;
388
389 default:
390 fepriv->auto_step++;
391 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
392 break;
393 }
394
395 if (!ready) fepriv->auto_sub_step++;
396 }
397
398 /* if this attempt would hit where we started, indicate a complete
399 * iteration has occurred */
400 if ((fepriv->auto_step == fepriv->started_auto_step) &&
401 (fepriv->auto_sub_step == 0) && check_wrapped) {
402 return 1;
403 }
404
36bdbc3f
AP		 405 dev_dbg(fe->dvb->device, "%s: drift:%i inversion:%i auto_step:%i " \
406 "auto_sub_step:%i started_auto_step:%i\n",
407 __func__, fepriv->lnb_drift, fepriv->inversion,
408 fepriv->auto_step, fepriv->auto_sub_step,
409 fepriv->started_auto_step);
1da177e4
LT		 410
411 /* set the frontend itself */
ac3852c4 412 c->frequency += fepriv->lnb_drift;
1da177e4 413 if (autoinversion)
ac3852c4
MCC		 414 c->inversion = fepriv->inversion;
415 tmp = *c;
dea74869 416 if (fe->ops.set_frontend)
bc9cd273 417 fe_set_err = fe->ops.set_frontend(fe);
ac3852c4 418 *c = tmp;
01886255
JG		 419 if (fe_set_err < 0) {
420 fepriv->state = FESTATE_ERROR;
421 return fe_set_err;
422 }
1da177e4 423
ac3852c4
MCC		 424 c->frequency = original_frequency;
425 c->inversion = original_inversion;
1da177e4
LT		 426
427 fepriv->auto_sub_step++;
428 return 0;
429}
430
36cb557a
AQ		 431static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
432{
0df289a2 433 enum fe_status s = 0;
01886255 434 int retval = 0;
36cb557a 435 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4 436 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
36cb557a
AQ		 437
438 /* if we've got no parameters, just keep idling */
439 if (fepriv->state & FESTATE_IDLE) {
440 fepriv->delay = 3*HZ;
441 fepriv->quality = 0;
442 return;
443 }
444
445 /* in SCAN mode, we just set the frontend when asked and leave it alone */
446 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
447 if (fepriv->state & FESTATE_RETUNE) {
ac3852c4 448 tmp = *c;
dea74869 449 if (fe->ops.set_frontend)
bc9cd273 450 retval = fe->ops.set_frontend(fe);
ac3852c4 451 *c = tmp;
01886255
JG		 452 if (retval < 0)
453 fepriv->state = FESTATE_ERROR;
454 else
455 fepriv->state = FESTATE_TUNED;
36cb557a
AQ		 456 }
457 fepriv->delay = 3*HZ;
458 fepriv->quality = 0;
459 return;
460 }
461
462 /* get the frontend status */
463 if (fepriv->state & FESTATE_RETUNE) {
464 s = 0;
465 } else {
dea74869
PB		 466 if (fe->ops.read_status)
467 fe->ops.read_status(fe, &s);
36cb557a
AQ		 468 if (s != fepriv->status) {
469 dvb_frontend_add_event(fe, s);
470 fepriv->status = s;
471 }
472 }
473
474 /* if we're not tuned, and we have a lock, move to the TUNED state */
475 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
476 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
477 fepriv->state = FESTATE_TUNED;
478
479 /* if we're tuned, then we have determined the correct inversion */
dea74869 480 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4
MCC		 481 (c->inversion == INVERSION_AUTO)) {
482 c->inversion = fepriv->inversion;
36cb557a
AQ		 483 }
484 return;
485 }
486
487 /* if we are tuned already, check we're still locked */
488 if (fepriv->state & FESTATE_TUNED) {
489 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
490
491 /* we're tuned, and the lock is still good... */
492 if (s & FE_HAS_LOCK) {
493 return;
494 } else { /* if we _WERE_ tuned, but now don't have a lock */
495 fepriv->state = FESTATE_ZIGZAG_FAST;
496 fepriv->started_auto_step = fepriv->auto_step;
497 fepriv->check_wrapped = 0;
498 }
499 }
500
501 /* don't actually do anything if we're in the LOSTLOCK state,
502 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
503 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 504 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 505 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
506 return;
507 }
508
509 /* don't do anything if we're in the DISEQC state, since this
510 * might be someone with a motorized dish controlled by DISEQC.
511 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
512 if (fepriv->state & FESTATE_DISEQC) {
513 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
514 return;
515 }
516
517 /* if we're in the RETUNE state, set everything up for a brand
518 * new scan, keeping the current inversion setting, as the next
519 * tune is _very_ likely to require the same */
520 if (fepriv->state & FESTATE_RETUNE) {
521 fepriv->lnb_drift = 0;
522 fepriv->auto_step = 0;
523 fepriv->auto_sub_step = 0;
524 fepriv->started_auto_step = 0;
525 fepriv->check_wrapped = 0;
526 }
527
528 /* fast zigzag. */
529 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
530 fepriv->delay = fepriv->min_delay;
531
2030c032 532 /* perform a tune */
01886255
JG		 533 retval = dvb_frontend_swzigzag_autotune(fe,
534 fepriv->check_wrapped);
535 if (retval < 0) {
536 return;
537 } else if (retval) {
36cb557a
AQ		 538 /* OK, if we've run out of trials at the fast speed.
539 * Drop back to slow for the _next_ attempt */
540 fepriv->state = FESTATE_SEARCHING_SLOW;
541 fepriv->started_auto_step = fepriv->auto_step;
542 return;
543 }
544 fepriv->check_wrapped = 1;
545
546 /* if we've just retuned, enter the ZIGZAG_FAST state.
547 * This ensures we cannot return from an
548 * FE_SET_FRONTEND ioctl before the first frontend tune
549 * occurs */
550 if (fepriv->state & FESTATE_RETUNE) {
551 fepriv->state = FESTATE_TUNING_FAST;
552 }
553 }
554
555 /* slow zigzag */
556 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
557 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
558
559 /* Note: don't bother checking for wrapping; we stay in this
560 * state until we get a lock */
561 dvb_frontend_swzigzag_autotune(fe, 0);
562 }
563}
564
1da177e4
LT		 565static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
566{
0c53c70f 567 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 568
18ed2860 569 if (fe->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 570 return 1;
571
572 if (fepriv->dvbdev->writers == 1)
b9d5efcc 573 if (time_after_eq(jiffies, fepriv->release_jiffies +
36cb557a 574 dvb_shutdown_timeout * HZ))
1da177e4
LT		 575 return 1;
576
577 return 0;
578}
579
580static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
581{
0c53c70f 582 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 583
584 if (fepriv->wakeup) {
585 fepriv->wakeup = 0;
586 return 1;
587 }
588 return dvb_frontend_is_exiting(fe);
589}
590
591static void dvb_frontend_wakeup(struct dvb_frontend *fe)
592{
0c53c70f 593 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 594
595 fepriv->wakeup = 1;
596 wake_up_interruptible(&fepriv->wait_queue);
597}
598
9239effd
MCC		 599/**
600 * dvb_enable_media_tuner() - tries to enable the DVB tuner
601 *
602 * @fe: struct dvb_frontend pointer
603 *
604 * This function ensures that just one media tuner is enabled for a given
605 * frontend. It has two different behaviors:
606 * - For trivial devices with just one tuner:
607 * it just enables the existing tuner->fe link
608 * - For devices with more than one tuner:
609 * It is up to the driver to implement the logic that will enable one tuner
610 * and disable the other ones. However, if more than one tuner is enabled for
611 * the same frontend, it will print an error message and return -EINVAL.
612 *
613 * At return, it will return the error code returned by media_entity_setup_link,
614 * or 0 if everything is OK, if no tuner is linked to the frontend or if the
615 * mdev is NULL.
616 */
135f9be9 617#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd
MCC		 618static int dvb_enable_media_tuner(struct dvb_frontend *fe)
619{
9239effd
MCC		 620 struct dvb_frontend_private *fepriv = fe->frontend_priv;
621 struct dvb_adapter *adapter = fe->dvb;
622 struct media_device *mdev = adapter->mdev;
623 struct media_entity *entity, *source;
624 struct media_link *link, *found_link = NULL;
625 int i, ret, n_links = 0, active_links = 0;
626
135f9be9
MCC		 627 fepriv->pipe_start_entity = NULL;
628
9239effd
MCC		 629 if (!mdev)
630 return 0;
631
632 entity = fepriv->dvbdev->entity;
135f9be9
MCC		 633 fepriv->pipe_start_entity = entity;
634
9239effd
MCC		 635 for (i = 0; i < entity->num_links; i++) {
636 link = &entity->links[i];
637 if (link->sink->entity == entity) {
638 found_link = link;
639 n_links++;
640 if (link->flags & MEDIA_LNK_FL_ENABLED)
641 active_links++;
642 }
643 }
644
645 if (!n_links || active_links == 1 || !found_link)
646 return 0;
647
648 /*
649 * If a frontend has more than one tuner linked, it is up to the driver
650 * to select with one will be the active one, as the frontend core can't
651 * guess. If the driver doesn't do that, it is a bug.
652 */
653 if (n_links > 1 && active_links != 1) {
654 dev_err(fe->dvb->device,
655 "WARNING: there are %d active links among %d tuners. This is a driver's bug!\n",
656 active_links, n_links);
657 return -EINVAL;
658 }
659
660 source = found_link->source->entity;
135f9be9 661 fepriv->pipe_start_entity = source;
9239effd
MCC		 662 for (i = 0; i < source->num_links; i++) {
663 struct media_entity *sink;
664 int flags = 0;
665
666 link = &source->links[i];
667 sink = link->sink->entity;
668
669 if (sink == entity)
670 flags = MEDIA_LNK_FL_ENABLED;
671
672 ret = media_entity_setup_link(link, flags);
673 if (ret) {
674 dev_err(fe->dvb->device,
675 "Couldn't change link %s->%s to %s. Error %d\n",
676 source->name, sink->name,
677 flags ? "enabled" : "disabled",
678 ret);
679 return ret;
680 } else
681 dev_dbg(fe->dvb->device,
682 "link %s->%s was %s\n",
683 source->name, sink->name,
684 flags ? "ENABLED" : "disabled");
685 }
9239effd
MCC		 686 return 0;
687}
135f9be9 688#endif
9239effd 689
1da177e4
LT		 690static int dvb_frontend_thread(void *data)
691{
0c53c70f
JS		 692 struct dvb_frontend *fe = data;
693 struct dvb_frontend_private *fepriv = fe->frontend_priv;
0df289a2 694 enum fe_status s;
c59e7870 695 enum dvbfe_algo algo;
c1bd57d3 696#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd 697 int ret;
c1bd57d3 698#endif
c59e7870 699
7e072221 700 bool re_tune = false;
6ae23224 701 bool semheld = false;
1da177e4 702
36bdbc3f 703 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 704
36cb557a
AQ		 705 fepriv->check_wrapped = 0;
706 fepriv->quality = 0;
707 fepriv->delay = 3*HZ;
1da177e4 708 fepriv->status = 0;
1da177e4 709 fepriv->wakeup = 0;
04c56d0e
AQ		 710 fepriv->reinitialise = 0;
711
135f9be9 712#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd
MCC		 713 ret = dvb_enable_media_tuner(fe);
714 if (ret) {
715 /* FIXME: return an error if it fails */
716 dev_info(fe->dvb->device,
717 "proceeding with FE task\n");
8a26a258 718 } else if (fepriv->pipe_start_entity) {
135f9be9
MCC		 719 ret = media_entity_pipeline_start(fepriv->pipe_start_entity,
720 &fepriv->pipe);
721 if (ret)
722 return ret;
9239effd 723 }
135f9be9 724#endif
9239effd 725
04c56d0e 726 dvb_frontend_init(fe);
1da177e4 727
83144186 728 set_freezable();
1da177e4
LT		 729 while (1) {
730 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 731restart:
94238e9b 732 wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 733 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
734 || freezing(current),
8eec1429
HP		 735 fepriv->delay);
736
737 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4 738 /* got signal or quitting */
6ae23224
JL		 739 if (!down_interruptible(&fepriv->sem))
740 semheld = true;
18ed2860 741 fe->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 742 break;
743 }
744
8eec1429 745 if (try_to_freeze())
6591691b 746 goto restart;
1da177e4
LT		 747
748 if (down_interruptible(&fepriv->sem))
749 break;
750
86f40cc3
AQ		 751 if (fepriv->reinitialise) {
752 dvb_frontend_init(fe);
42f4e774 753 if (fe->ops.set_tone && fepriv->tone != -1)
dea74869 754 fe->ops.set_tone(fe, fepriv->tone);
42f4e774 755 if (fe->ops.set_voltage && fepriv->voltage != -1)
dea74869 756 fe->ops.set_voltage(fe, fepriv->voltage);
86f40cc3
AQ		 757 fepriv->reinitialise = 0;
758 }
759
36cb557a 760 /* do an iteration of the tuning loop */
d772bd03 761 if (fe->ops.get_frontend_algo) {
c59e7870
MA		 762 algo = fe->ops.get_frontend_algo(fe);
763 switch (algo) {
764 case DVBFE_ALGO_HW:
36bdbc3f 765 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
c59e7870 766
d772bd03 767 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 768 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTATE_RETUNE\n", __func__);
7e072221 769 re_tune = true;
d772bd03 770 fepriv->state = FESTATE_TUNED;
45145b67
SA		 771 } else {
772 re_tune = false;
d772bd03
MA		 773 }
774
c59e7870 775 if (fe->ops.tune)
7e072221 776 fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s);
c59e7870 777
2fac9a0f 778 if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
36bdbc3f 779 dev_dbg(fe->dvb->device, "%s: state changed, adding current state\n", __func__);
d772bd03
MA		 780 dvb_frontend_add_event(fe, s);
781 fepriv->status = s;
782 }
c59e7870
MA		 783 break;
784 case DVBFE_ALGO_SW:
36bdbc3f 785 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
70d90635 786 dvb_frontend_swzigzag(fe);
c59e7870
MA		 787 break;
788 case DVBFE_ALGO_CUSTOM:
36bdbc3f 789 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
c59e7870 790 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 791 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTAT_RETUNE\n", __func__);
c59e7870
MA		 792 fepriv->state = FESTATE_TUNED;
793 }
794 /* Case where we are going to search for a carrier
795 * User asked us to retune again for some reason, possibly
796 * requesting a search with a new set of parameters
797 */
798 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
7bcbdf38 799 if (fe->ops.search) {
41da5320 800 fepriv->algo_status = fe->ops.search(fe);
c59e7870
MA		 801 /* We did do a search as was requested, the flags are
802 * now unset as well and has the flags wrt to search.
803 */
7bcbdf38
AJ		 804 } else {
805 fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
806 }
c59e7870
MA		 807 }
808 /* Track the carrier if the search was successful */
1b5d8716 809 if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) {
7bcbdf38
AJ		 810 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
811 fepriv->delay = HZ / 2;
812 }
556a0442 813 dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
7bcbdf38
AJ		 814 fe->ops.read_status(fe, &s);
815 if (s != fepriv->status) {
816 dvb_frontend_add_event(fe, s); /* update event list */
817 fepriv->status = s;
818 if (!(s & FE_HAS_LOCK)) {
819 fepriv->delay = HZ / 10;
820 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
821 } else {
822 fepriv->delay = 60 * HZ;
823 }
c59e7870
MA		 824 }
825 break;
826 default:
36bdbc3f 827 dev_dbg(fe->dvb->device, "%s: UNDEFINED ALGO !\n", __func__);
c59e7870
MA		 828 break;
829 }
830 } else {
4a4edcca 831 dvb_frontend_swzigzag(fe);
c59e7870 832 }
1da177e4
LT		 833 }
834
135f9be9 835#ifdef CONFIG_MEDIA_CONTROLLER_DVB
8a26a258
MCC		 836 if (fepriv->pipe_start_entity)
837 media_entity_pipeline_stop(fepriv->pipe_start_entity);
135f9be9
MCC		 838 fepriv->pipe_start_entity = NULL;
839#endif
840
608f62d6
OE		 841 if (dvb_powerdown_on_sleep) {
842 if (fe->ops.set_voltage)
843 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869 844 if (fe->ops.tuner_ops.sleep) {
41286d97
DH		 845 if (fe->ops.i2c_gate_ctrl)
846 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 847 fe->ops.tuner_ops.sleep(fe);
848 if (fe->ops.i2c_gate_ctrl)
849 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 850 }
dea74869
PB		 851 if (fe->ops.sleep)
852 fe->ops.sleep(fe);
1da177e4
LT		 853 }
854
8eec1429 855 fepriv->thread = NULL;
e36309f5 856 if (kthread_should_stop())
18ed2860 857 fe->exit = DVB_FE_DEVICE_REMOVED;
e36309f5 858 else
18ed2860 859 fe->exit = DVB_FE_NO_EXIT;
1da177e4
LT		 860 mb();
861
6ae23224
JL		 862 if (semheld)
863 up(&fepriv->sem);
1da177e4
LT		 864 dvb_frontend_wakeup(fe);
865 return 0;
866}
867
868static void dvb_frontend_stop(struct dvb_frontend *fe)
869{
0c53c70f 870 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 871
36bdbc3f 872 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 873
18ed2860
SK		 874 if (fe->exit != DVB_FE_DEVICE_REMOVED)
875 fe->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 876 mb();
877
8eec1429 878 if (!fepriv->thread)
1da177e4
LT		 879 return;
880
8eec1429 881 kthread_stop(fepriv->thread);
ca5be9cd 882
a0a4714c 883 sema_init(&fepriv->sem, 1);
1da177e4
LT		 884 fepriv->state = FESTATE_IDLE;
885
886 /* paranoia check in case a signal arrived */
8eec1429 887 if (fepriv->thread)
36bdbc3f
AP		 888 dev_warn(fe->dvb->device,
889 "dvb_frontend_stop: warning: thread %p won't exit\n",
8eec1429 890 fepriv->thread);
1da177e4
LT		 891}
892
83b75b04
N		 893/*
894 * Sleep until gettimeofday() > waketime + add_usec
895 * This needs to be as precise as possible, but as the delay is
896 * usually between 2ms and 32ms, it is done using a scheduled msleep
897 * followed by usleep (normally a busy-wait loop) for the remainder
898 */
9056a23b 899void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec)
83b75b04 900{
83b75b04
N		 901 s32 delta, newdelta;
902
9056a23b
TR		 903 ktime_add_us(*waketime, add_usec);
904 delta = ktime_us_delta(ktime_get_real(), *waketime);
83b75b04
N		 905 if (delta > 2500) {
906 msleep((delta - 1500) / 1000);
9056a23b 907 newdelta = ktime_us_delta(ktime_get_real(), *waketime);
83b75b04
N		 908 delta = (newdelta > delta) ? 0 : newdelta;
909 }
910 if (delta > 0)
911 udelay(delta);
912}
913EXPORT_SYMBOL(dvb_frontend_sleep_until);
914
1da177e4
LT		 915static int dvb_frontend_start(struct dvb_frontend *fe)
916{
917 int ret;
0c53c70f 918 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 919 struct task_struct *fe_thread;
1da177e4 920
36bdbc3f 921 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 922
8eec1429 923 if (fepriv->thread) {
18ed2860 924 if (fe->exit == DVB_FE_NO_EXIT)
1da177e4
LT		 925 return 0;
926 else
927 dvb_frontend_stop (fe);
928 }
929
930 if (signal_pending(current))
931 return -EINTR;
932 if (down_interruptible (&fepriv->sem))
933 return -EINTR;
934
935 fepriv->state = FESTATE_IDLE;
18ed2860 936 fe->exit = DVB_FE_NO_EXIT;
8eec1429 937 fepriv->thread = NULL;
1da177e4
LT		 938 mb();
939
8eec1429 940 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 941 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 942 if (IS_ERR(fe_thread)) {
943 ret = PTR_ERR(fe_thread);
36bdbc3f
AP		 944 dev_warn(fe->dvb->device,
945 "dvb_frontend_start: failed to start kthread (%d)\n",
946 ret);
1da177e4
LT		 947 up(&fepriv->sem);
948 return ret;
949 }
8eec1429 950 fepriv->thread = fe_thread;
1da177e4
LT		 951 return 0;
952}
953
2030c032 954static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
c471b331
OE		 955 u32 *freq_min, u32 *freq_max)
956{
957 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
958
959 if (fe->ops.info.frequency_max == 0)
960 *freq_max = fe->ops.tuner_ops.info.frequency_max;
961 else if (fe->ops.tuner_ops.info.frequency_max == 0)
962 *freq_max = fe->ops.info.frequency_max;
963 else
964 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
965
966 if (*freq_min == 0 || *freq_max == 0)
36bdbc3f
AP		 967 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
968 fe->dvb->num, fe->id);
c471b331
OE		 969}
970
5bfaadde 971static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
1fab46f0 972{
5bfaadde 973 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c471b331
OE		 974 u32 freq_min;
975 u32 freq_max;
976
1fab46f0 977 /* range check: frequency */
2030c032 978 dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
5bfaadde
MCC		 979 if ((freq_min && c->frequency < freq_min) ||
980 (freq_max && c->frequency > freq_max)) {
36bdbc3f
AP		 981 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
982 fe->dvb->num, fe->id, c->frequency,
983 freq_min, freq_max);
1fab46f0
OE		 984 return -EINVAL;
985 }
986
987 /* range check: symbol rate */
5bfaadde
MCC		 988 switch (c->delivery_system) {
989 case SYS_DVBS:
990 case SYS_DVBS2:
991 case SYS_TURBO:
992 case SYS_DVBC_ANNEX_A:
993 case SYS_DVBC_ANNEX_C:
1fab46f0 994 if ((fe->ops.info.symbol_rate_min &&
5bfaadde 995 c->symbol_rate < fe->ops.info.symbol_rate_min) ||
1fab46f0 996 (fe->ops.info.symbol_rate_max &&
5bfaadde 997 c->symbol_rate > fe->ops.info.symbol_rate_max)) {
36bdbc3f
AP		 998 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
999 fe->dvb->num, fe->id, c->symbol_rate,
1000 fe->ops.info.symbol_rate_min,
1001 fe->ops.info.symbol_rate_max);
1fab46f0
OE		 1002 return -EINVAL;
1003 }
5bfaadde
MCC		 1004 default:
1005 break;
1fab46f0
OE		 1006 }
1007
1008 return 0;
1009}
1010
b6e760f3
PB		 1011static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
1012{
50727719 1013 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
b6e760f3 1014 int i;
149709f5 1015 u32 delsys;
b6e760f3 1016
149709f5 1017 delsys = c->delivery_system;
808d24d6 1018 memset(c, 0, offsetof(struct dtv_frontend_properties, strength));
149709f5 1019 c->delivery_system = delsys;
50727719
AO		 1020
1021 c->state = DTV_CLEAR;
26c924fe 1022
36bdbc3f
AP		 1023 dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n",
1024 __func__, c->delivery_system);
26c924fe 1025
50727719 1026 c->transmission_mode = TRANSMISSION_MODE_AUTO;
26c924fe 1027 c->bandwidth_hz = 0; /* AUTO */
50727719
AO		 1028 c->guard_interval = GUARD_INTERVAL_AUTO;
1029 c->hierarchy = HIERARCHY_AUTO;
26c924fe 1030 c->symbol_rate = 0;
50727719
AO		 1031 c->code_rate_HP = FEC_AUTO;
1032 c->code_rate_LP = FEC_AUTO;
26c924fe 1033 c->fec_inner = FEC_AUTO;
39ce61a8 1034 c->rolloff = ROLLOFF_AUTO;
26c924fe 1035 c->voltage = SEC_VOLTAGE_OFF;
26c924fe
MCC		 1036 c->sectone = SEC_TONE_OFF;
1037 c->pilot = PILOT_AUTO;
50727719 1038
a520ca97
MCC		 1039 c->isdbt_partial_reception = 0;
1040 c->isdbt_sb_mode = 0;
1041 c->isdbt_sb_subchannel = 0;
1042 c->isdbt_sb_segment_idx = 0;
1043 c->isdbt_sb_segment_count = 0;
1044 c->isdbt_layer_enabled = 0;
b6e760f3 1045 for (i = 0; i < 3; i++) {
50727719
AO		 1046 c->layer[i].fec = FEC_AUTO;
1047 c->layer[i].modulation = QAM_AUTO;
a520ca97
MCC		 1048 c->layer[i].interleaving = 0;
1049 c->layer[i].segment_count = 0;
b6e760f3
PB		 1050 }
1051
287cefd0 1052 c->stream_id = NO_STREAM_ID_FILTER;
26c924fe 1053
5bfaadde
MCC		 1054 switch (c->delivery_system) {
1055 case SYS_DVBS:
1056 case SYS_DVBS2:
1057 case SYS_TURBO:
1058 c->modulation = QPSK; /* implied for DVB-S in legacy API */
1059 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
1060 break;
1061 case SYS_ATSC:
1062 c->modulation = VSB_8;
1063 break;
8e281faf
AT		 1064 case SYS_ISDBS:
1065 c->symbol_rate = 28860000;
1066 c->rolloff = ROLLOFF_35;
1067 c->bandwidth_hz = c->symbol_rate / 100 * 135;
1068 break;
5bfaadde
MCC		 1069 default:
1070 c->modulation = QAM_AUTO;
1071 break;
1072 }
1073
33eebec5
AP		 1074 c->lna = LNA_AUTO;
1075
b6e760f3
PB		 1076 return 0;
1077}
1078
1079#define _DTV_CMD(n, s, b) \
1080[n] = { \
1081 .name = #n, \
1082 .cmd = n, \
1083 .set = s,\
1084 .buffer = b \
1085}
1086
ec05a642 1087static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
06d3a396
MCC		 1088 _DTV_CMD(DTV_TUNE, 1, 0),
1089 _DTV_CMD(DTV_CLEAR, 1, 0),
6b73eeaf
ST		 1090
1091 /* Set */
06d3a396
MCC		 1092 _DTV_CMD(DTV_FREQUENCY, 1, 0),
1093 _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
1094 _DTV_CMD(DTV_MODULATION, 1, 0),
1095 _DTV_CMD(DTV_INVERSION, 1, 0),
1096 _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
1097 _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
1098 _DTV_CMD(DTV_INNER_FEC, 1, 0),
1099 _DTV_CMD(DTV_VOLTAGE, 1, 0),
1100 _DTV_CMD(DTV_TONE, 1, 0),
1101 _DTV_CMD(DTV_PILOT, 1, 0),
1102 _DTV_CMD(DTV_ROLLOFF, 1, 0),
1103 _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
1104 _DTV_CMD(DTV_HIERARCHY, 1, 0),
1105 _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
1106 _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
1107 _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
1108 _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
224b6642 1109 _DTV_CMD(DTV_INTERLEAVING, 1, 0),
b6e760f3
PB		 1110
1111 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
1112 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
1113 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
1114 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
1115 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
e7b7949a 1116 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
b6e760f3
PB		 1117 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
1118 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
1119 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
1120 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
1121 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
1122 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
1123 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
1124 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
1125 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
1126 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
1127 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
1128 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
1129
287cefd0
EP		 1130 _DTV_CMD(DTV_STREAM_ID, 1, 0),
1131 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
8a2697ab 1132 _DTV_CMD(DTV_LNA, 1, 0),
98293ef3 1133
6b73eeaf 1134 /* Get */
06d3a396
MCC		 1135 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
1136 _DTV_CMD(DTV_API_VERSION, 0, 0),
ba2780c7
MA		 1137
1138 _DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
ca689488
MK		 1139
1140 _DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
1141 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
1142
1143 _DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
ca689488
MK		 1144 _DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
1145 _DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
1146 _DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
1147 _DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
1148 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
ca689488
MK		 1149 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
1150 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
1151 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
1152 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
1153 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
1154 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
1155 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
7cd4ece5
MCC		 1156
1157 /* Statistics API */
1158 _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH, 0, 0),
1159 _DTV_CMD(DTV_STAT_CNR, 0, 0),
1160 _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0, 0),
1161 _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0, 0),
1162 _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0, 0),
1163 _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0, 0),
1164 _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT, 0, 0),
1165 _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
6b73eeaf
ST		 1166};
1167
36bdbc3f 1168static void dtv_property_dump(struct dvb_frontend *fe, struct dtv_property *tvp)
6b73eeaf
ST		 1169{
1170 int i;
1171
106ff9e0 1172 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
36bdbc3f
AP		 1173 dev_warn(fe->dvb->device, "%s: tvp.cmd = 0x%08x undefined\n",
1174 __func__, tvp->cmd);
4aae8efb
DB		 1175 return;
1176 }
1177
36bdbc3f
AP		 1178 dev_dbg(fe->dvb->device, "%s: tvp.cmd = 0x%08x (%s)\n", __func__,
1179 tvp->cmd, dtv_cmds[tvp->cmd].name);
6b73eeaf 1180
36bdbc3f
AP		 1181 if (dtv_cmds[tvp->cmd].buffer) {
1182 dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
1183 __func__, tvp->u.buffer.len);
6b73eeaf
ST		 1184
1185 for(i = 0; i < tvp->u.buffer.len; i++)
36bdbc3f
AP		 1186 dev_dbg(fe->dvb->device,
1187 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1188 __func__, i, tvp->u.buffer.data[i]);
1189 } else {
1190 dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__,
1191 tvp->u.data);
1192 }
6b73eeaf
ST		 1193}
1194
ee33c525
ST		 1195/* Synchronise the legacy tuning parameters into the cache, so that demodulator
1196 * drivers can use a single set_frontend tuning function, regardless of whether
1197 * it's being used for the legacy or new API, reducing code and complexity.
1198 */
5bfaadde
MCC		 1199static int dtv_property_cache_sync(struct dvb_frontend *fe,
1200 struct dtv_frontend_properties *c,
1201 const struct dvb_frontend_parameters *p)
ee33c525 1202{
ee33c525
ST		 1203 c->frequency = p->frequency;
1204 c->inversion = p->inversion;
1205
5bfaadde
MCC		 1206 switch (dvbv3_type(c->delivery_system)) {
1207 case DVBV3_QPSK:
36bdbc3f 1208 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
ee33c525
ST		 1209 c->symbol_rate = p->u.qpsk.symbol_rate;
1210 c->fec_inner = p->u.qpsk.fec_inner;
1211 break;
5bfaadde 1212 case DVBV3_QAM:
36bdbc3f 1213 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
ee33c525
ST		 1214 c->symbol_rate = p->u.qam.symbol_rate;
1215 c->fec_inner = p->u.qam.fec_inner;
1216 c->modulation = p->u.qam.modulation;
1217 break;
5bfaadde 1218 case DVBV3_OFDM:
36bdbc3f
AP		 1219 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
1220
9a27e6a0
MCC		 1221 switch (p->u.ofdm.bandwidth) {
1222 case BANDWIDTH_10_MHZ:
1223 c->bandwidth_hz = 10000000;
1224 break;
1225 case BANDWIDTH_8_MHZ:
75b7f943 1226 c->bandwidth_hz = 8000000;
9a27e6a0
MCC		 1227 break;
1228 case BANDWIDTH_7_MHZ:
1229 c->bandwidth_hz = 7000000;
1230 break;
1231 case BANDWIDTH_6_MHZ:
1232 c->bandwidth_hz = 6000000;
1233 break;
1234 case BANDWIDTH_5_MHZ:
1235 c->bandwidth_hz = 5000000;
1236 break;
1237 case BANDWIDTH_1_712_MHZ:
1238 c->bandwidth_hz = 1712000;
1239 break;
1240 case BANDWIDTH_AUTO:
75b7f943 1241 c->bandwidth_hz = 0;
9a27e6a0
MCC		 1242 }
1243
ee33c525
ST		 1244 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1245 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1246 c->modulation = p->u.ofdm.constellation;
1247 c->transmission_mode = p->u.ofdm.transmission_mode;
1248 c->guard_interval = p->u.ofdm.guard_interval;
1249 c->hierarchy = p->u.ofdm.hierarchy_information;
1250 break;
5bfaadde 1251 case DVBV3_ATSC:
36bdbc3f 1252 dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__);
ee33c525 1253 c->modulation = p->u.vsb.modulation;
ca689488
MK		 1254 if (c->delivery_system == SYS_ATSCMH)
1255 break;
80a773c9
ST		 1256 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1257 c->delivery_system = SYS_ATSC;
1258 else
1259 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525 1260 break;
5bfaadde 1261 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1262 dev_err(fe->dvb->device,
1263 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1264 __func__, c->delivery_system);
5bfaadde 1265 return -EINVAL;
ee33c525 1266 }
5bfaadde
MCC		 1267
1268 return 0;
ee33c525
ST		 1269}
1270
d5748f10
ST		 1271/* Ensure the cached values are set correctly in the frontend
1272 * legacy tuning structures, for the advanced tuning API.
1273 */
5bfaadde 1274static int dtv_property_legacy_params_sync(struct dvb_frontend *fe,
a689e365 1275 struct dvb_frontend_parameters *p)
6b73eeaf 1276{
15cc2bb3 1277 const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1278
d5748f10
ST		 1279 p->frequency = c->frequency;
1280 p->inversion = c->inversion;
6b73eeaf 1281
5bfaadde
MCC		 1282 switch (dvbv3_type(c->delivery_system)) {
1283 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1284 dev_err(fe->dvb->device,
1285 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1286 __func__, c->delivery_system);
5bfaadde
MCC		 1287 return -EINVAL;
1288 case DVBV3_QPSK:
36bdbc3f 1289 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
d5748f10
ST		 1290 p->u.qpsk.symbol_rate = c->symbol_rate;
1291 p->u.qpsk.fec_inner = c->fec_inner;
1292 break;
5bfaadde 1293 case DVBV3_QAM:
36bdbc3f 1294 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
d5748f10
ST		 1295 p->u.qam.symbol_rate = c->symbol_rate;
1296 p->u.qam.fec_inner = c->fec_inner;
1297 p->u.qam.modulation = c->modulation;
1298 break;
5bfaadde 1299 case DVBV3_OFDM:
36bdbc3f 1300 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
9a27e6a0
MCC		 1301 switch (c->bandwidth_hz) {
1302 case 10000000:
1303 p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
1304 break;
1305 case 8000000:
75b7f943 1306 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
9a27e6a0
MCC		 1307 break;
1308 case 7000000:
1309 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1310 break;
1311 case 6000000:
1312 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1313 break;
1314 case 5000000:
1315 p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
1316 break;
1317 case 1712000:
1318 p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
1319 break;
1320 case 0:
1321 default:
75b7f943 1322 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
9a27e6a0 1323 }
d5748f10
ST		 1324 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1325 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1326 p->u.ofdm.constellation = c->modulation;
1327 p->u.ofdm.transmission_mode = c->transmission_mode;
1328 p->u.ofdm.guard_interval = c->guard_interval;
1329 p->u.ofdm.hierarchy_information = c->hierarchy;
1330 break;
5bfaadde 1331 case DVBV3_ATSC:
36bdbc3f 1332 dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__);
d5748f10
ST		 1333 p->u.vsb.modulation = c->modulation;
1334 break;
1335 }
5bfaadde 1336 return 0;
6b73eeaf
ST		 1337}
1338
a689e365
MCC		 1339/**
1340 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1341 * @fe: struct dvb_frontend pointer
1342 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1343 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1344 *
1345 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1346 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1347 * If p_out is not null, it will update the DVBv3 params pointed by it.
1348 */
1349static int dtv_get_frontend(struct dvb_frontend *fe,
a689e365
MCC		 1350 struct dvb_frontend_parameters *p_out)
1351{
a689e365
MCC		 1352 int r;
1353
a689e365 1354 if (fe->ops.get_frontend) {
7c61d80a 1355 r = fe->ops.get_frontend(fe);
a689e365
MCC		 1356 if (unlikely(r < 0))
1357 return r;
7c61d80a 1358 if (p_out)
a689e365
MCC		 1359 dtv_property_legacy_params_sync(fe, p_out);
1360 return 0;
1361 }
1362
7c61d80a 1363 /* As everything is in cache, get_frontend fops are always supported */
b1e9a650 1364 return 0;
a689e365
MCC		 1365}
1366
16ef8def 1367static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5 1368 unsigned int cmd, void *parg);
16ef8def 1369static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1370 unsigned int cmd, void *parg);
1371
072ce0c5 1372static int dtv_property_process_get(struct dvb_frontend *fe,
a689e365 1373 const struct dtv_frontend_properties *c,
072ce0c5 1374 struct dtv_property *tvp,
16ef8def 1375 struct file *file)
363429a0 1376{
5bfaadde 1377 int r, ncaps;
bfbf2dae 1378
363429a0 1379 switch(tvp->cmd) {
ba2780c7 1380 case DTV_ENUM_DELSYS:
5bfaadde 1381 ncaps = 0;
0123f29c 1382 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
5bfaadde
MCC		 1383 tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
1384 ncaps++;
1385 }
1386 tvp->u.buffer.len = ncaps;
ba2780c7 1387 break;
363429a0 1388 case DTV_FREQUENCY:
50727719 1389 tvp->u.data = c->frequency;
363429a0
ST		 1390 break;
1391 case DTV_MODULATION:
50727719 1392 tvp->u.data = c->modulation;
363429a0 1393 break;
75b7f943 1394 case DTV_BANDWIDTH_HZ:
50727719 1395 tvp->u.data = c->bandwidth_hz;
363429a0
ST		 1396 break;
1397 case DTV_INVERSION:
50727719 1398 tvp->u.data = c->inversion;
363429a0
ST		 1399 break;
1400 case DTV_SYMBOL_RATE:
50727719 1401 tvp->u.data = c->symbol_rate;
363429a0
ST		 1402 break;
1403 case DTV_INNER_FEC:
50727719 1404 tvp->u.data = c->fec_inner;
363429a0
ST		 1405 break;
1406 case DTV_PILOT:
50727719 1407 tvp->u.data = c->pilot;
363429a0
ST		 1408 break;
1409 case DTV_ROLLOFF:
50727719 1410 tvp->u.data = c->rolloff;
363429a0
ST		 1411 break;
1412 case DTV_DELIVERY_SYSTEM:
50727719 1413 tvp->u.data = c->delivery_system;
363429a0 1414 break;
363429a0 1415 case DTV_VOLTAGE:
50727719 1416 tvp->u.data = c->voltage;
363429a0
ST		 1417 break;
1418 case DTV_TONE:
50727719 1419 tvp->u.data = c->sectone;
363429a0 1420 break;
eacf8d8d
ST		 1421 case DTV_API_VERSION:
1422 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1423 break;
a4de91be 1424 case DTV_CODE_RATE_HP:
50727719 1425 tvp->u.data = c->code_rate_HP;
a4de91be
ST		 1426 break;
1427 case DTV_CODE_RATE_LP:
50727719 1428 tvp->u.data = c->code_rate_LP;
a4de91be 1429 break;
b87625f0 1430 case DTV_GUARD_INTERVAL:
50727719 1431 tvp->u.data = c->guard_interval;
b87625f0
ST		 1432 break;
1433 case DTV_TRANSMISSION_MODE:
50727719 1434 tvp->u.data = c->transmission_mode;
b87625f0 1435 break;
ef526f42 1436 case DTV_HIERARCHY:
50727719 1437 tvp->u.data = c->hierarchy;
ef526f42 1438 break;
224b6642
AP		 1439 case DTV_INTERLEAVING:
1440 tvp->u.data = c->interleaving;
1441 break;
b6e760f3
PB		 1442
1443 /* ISDB-T Support here */
1444 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1445 tvp->u.data = c->isdbt_partial_reception;
b6e760f3
PB		 1446 break;
1447 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1448 tvp->u.data = c->isdbt_sb_mode;
b6e760f3
PB		 1449 break;
1450 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1451 tvp->u.data = c->isdbt_sb_subchannel;
b6e760f3
PB		 1452 break;
1453 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1454 tvp->u.data = c->isdbt_sb_segment_idx;
b6e760f3
PB		 1455 break;
1456 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1457 tvp->u.data = c->isdbt_sb_segment_count;
b6e760f3 1458 break;
e7b7949a 1459 case DTV_ISDBT_LAYER_ENABLED:
50727719 1460 tvp->u.data = c->isdbt_layer_enabled;
e7b7949a 1461 break;
b6e760f3 1462 case DTV_ISDBT_LAYERA_FEC:
50727719 1463 tvp->u.data = c->layer[0].fec;
b6e760f3
PB		 1464 break;
1465 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1466 tvp->u.data = c->layer[0].modulation;
b6e760f3
PB		 1467 break;
1468 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1469 tvp->u.data = c->layer[0].segment_count;
b6e760f3
PB		 1470 break;
1471 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1472 tvp->u.data = c->layer[0].interleaving;
b6e760f3
PB		 1473 break;
1474 case DTV_ISDBT_LAYERB_FEC:
50727719 1475 tvp->u.data = c->layer[1].fec;
b6e760f3
PB		 1476 break;
1477 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1478 tvp->u.data = c->layer[1].modulation;
b6e760f3
PB		 1479 break;
1480 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1481 tvp->u.data = c->layer[1].segment_count;
b6e760f3
PB		 1482 break;
1483 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1484 tvp->u.data = c->layer[1].interleaving;
b6e760f3
PB		 1485 break;
1486 case DTV_ISDBT_LAYERC_FEC:
50727719 1487 tvp->u.data = c->layer[2].fec;
b6e760f3
PB		 1488 break;
1489 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1490 tvp->u.data = c->layer[2].modulation;
b6e760f3
PB		 1491 break;
1492 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1493 tvp->u.data = c->layer[2].segment_count;
b6e760f3
PB		 1494 break;
1495 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1496 tvp->u.data = c->layer[2].interleaving;
b6e760f3 1497 break;
287cefd0
EP		 1498
1499 /* Multistream support */
1500 case DTV_STREAM_ID:
1501 case DTV_DVBT2_PLP_ID_LEGACY:
1502 tvp->u.data = c->stream_id;
94d56ffa 1503 break;
ca689488
MK		 1504
1505 /* ATSC-MH */
1506 case DTV_ATSCMH_FIC_VER:
1507 tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
1508 break;
1509 case DTV_ATSCMH_PARADE_ID:
1510 tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
1511 break;
1512 case DTV_ATSCMH_NOG:
1513 tvp->u.data = fe->dtv_property_cache.atscmh_nog;
1514 break;
1515 case DTV_ATSCMH_TNOG:
1516 tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
1517 break;
1518 case DTV_ATSCMH_SGN:
1519 tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
1520 break;
1521 case DTV_ATSCMH_PRC:
1522 tvp->u.data = fe->dtv_property_cache.atscmh_prc;
1523 break;
1524 case DTV_ATSCMH_RS_FRAME_MODE:
1525 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
1526 break;
1527 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1528 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
1529 break;
1530 case DTV_ATSCMH_RS_CODE_MODE_PRI:
1531 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
1532 break;
1533 case DTV_ATSCMH_RS_CODE_MODE_SEC:
1534 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
1535 break;
1536 case DTV_ATSCMH_SCCC_BLOCK_MODE:
1537 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
1538 break;
1539 case DTV_ATSCMH_SCCC_CODE_MODE_A:
1540 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
1541 break;
1542 case DTV_ATSCMH_SCCC_CODE_MODE_B:
1543 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
1544 break;
1545 case DTV_ATSCMH_SCCC_CODE_MODE_C:
1546 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
1547 break;
1548 case DTV_ATSCMH_SCCC_CODE_MODE_D:
1549 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
1550 break;
ca689488 1551
33eebec5
AP		 1552 case DTV_LNA:
1553 tvp->u.data = c->lna;
1554 break;
1555
7cd4ece5
MCC		 1556 /* Fill quality measures */
1557 case DTV_STAT_SIGNAL_STRENGTH:
1558 tvp->u.st = c->strength;
1559 break;
1560 case DTV_STAT_CNR:
1561 tvp->u.st = c->cnr;
1562 break;
1563 case DTV_STAT_PRE_ERROR_BIT_COUNT:
1564 tvp->u.st = c->pre_bit_error;
1565 break;
1566 case DTV_STAT_PRE_TOTAL_BIT_COUNT:
1567 tvp->u.st = c->pre_bit_count;
1568 break;
1569 case DTV_STAT_POST_ERROR_BIT_COUNT:
1570 tvp->u.st = c->post_bit_error;
1571 break;
1572 case DTV_STAT_POST_TOTAL_BIT_COUNT:
1573 tvp->u.st = c->post_bit_count;
1574 break;
1575 case DTV_STAT_ERROR_BLOCK_COUNT:
1576 tvp->u.st = c->block_error;
1577 break;
1578 case DTV_STAT_TOTAL_BLOCK_COUNT:
1579 tvp->u.st = c->block_count;
1580 break;
363429a0 1581 default:
94a93e5f
MCC		 1582 dev_dbg(fe->dvb->device,
1583 "%s: FE property %d doesn't exist\n",
1584 __func__, tvp->cmd);
aff8ab5c 1585 return -EINVAL;
363429a0
ST		 1586 }
1587
e23d9ae3
AO		 1588 /* Allow the frontend to override outgoing properties */
1589 if (fe->ops.get_property) {
1590 r = fe->ops.get_property(fe, tvp);
1591 if (r < 0)
1592 return r;
1593 }
1594
36bdbc3f 1595 dtv_property_dump(fe, tvp);
639544d7 1596
aff8ab5c 1597 return 0;
363429a0
ST		 1598}
1599
5bfaadde
MCC		 1600static int dtv_set_frontend(struct dvb_frontend *fe);
1601
04be0f76
MCC		 1602static bool is_dvbv3_delsys(u32 delsys)
1603{
1604 bool status;
1605
1606 status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
1607 (delsys == SYS_DVBS) || (delsys == SYS_ATSC);
1608
1609 return status;
1610}
1611
52dee392
MCC		 1612/**
1613 * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
1614 * @fe: struct frontend;
1615 * @delsys: DVBv5 type that will be used for emulation
1616 *
1617 * Provides emulation for delivery systems that are compatible with the old
1618 * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
1619 * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
1620 * parameters are compatible with DVB-S spec.
1621 */
1622static int emulate_delivery_system(struct dvb_frontend *fe, u32 delsys)
04be0f76 1623{
be431b16 1624 int i;
04be0f76 1625 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
04be0f76 1626
3626479e
MCC		 1627 c->delivery_system = delsys;
1628
04be0f76 1629 /*
52dee392 1630 * If the call is for ISDB-T, put it into full-seg, auto mode, TV
04be0f76 1631 */
52dee392
MCC		 1632 if (c->delivery_system == SYS_ISDBT) {
1633 dev_dbg(fe->dvb->device,
1634 "%s: Using defaults for SYS_ISDBT\n",
1635 __func__);
04be0f76 1636
52dee392
MCC		 1637 if (!c->bandwidth_hz)
1638 c->bandwidth_hz = 6000000;
1639
1640 c->isdbt_partial_reception = 0;
1641 c->isdbt_sb_mode = 0;
1642 c->isdbt_sb_subchannel = 0;
1643 c->isdbt_sb_segment_idx = 0;
1644 c->isdbt_sb_segment_count = 0;
1645 c->isdbt_layer_enabled = 7;
1646 for (i = 0; i < 3; i++) {
1647 c->layer[i].fec = FEC_AUTO;
1648 c->layer[i].modulation = QAM_AUTO;
1649 c->layer[i].interleaving = 0;
1650 c->layer[i].segment_count = 0;
04be0f76
MCC		 1651 }
1652 }
36bdbc3f 1653 dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n",
52dee392 1654 __func__, c->delivery_system);
9474c5e6 1655
04be0f76
MCC		 1656 return 0;
1657}
1658
52dee392
MCC		 1659/**
1660 * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
1661 * @fe: frontend struct
1662 * @desired_system: delivery system requested by the user
1663 *
1664 * A DVBv5 call know what's the desired system it wants. So, set it.
1665 *
1666 * There are, however, a few known issues with early DVBv5 applications that
1667 * are also handled by this logic:
1668 *
1669 * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
1670 * This is an API violation, but, as we don't want to break userspace,
1671 * convert it to the first supported delivery system.
1672 * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
1673 * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
1674 * ISDB-T provided backward compat with DVB-T.
1675 */
be431b16
MCC		 1676static int dvbv5_set_delivery_system(struct dvb_frontend *fe,
1677 u32 desired_system)
1678{
1679 int ncaps;
1680 u32 delsys = SYS_UNDEFINED;
1681 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1682 enum dvbv3_emulation_type type;
1683
1684 /*
1685 * It was reported that some old DVBv5 applications were
1686 * filling delivery_system with SYS_UNDEFINED. If this happens,
1687 * assume that the application wants to use the first supported
1688 * delivery system.
1689 */
52dee392
MCC		 1690 if (desired_system == SYS_UNDEFINED)
1691 desired_system = fe->ops.delsys[0];
be431b16
MCC		 1692
1693 /*
52dee392
MCC		 1694 * This is a DVBv5 call. So, it likely knows the supported
1695 * delivery systems. So, check if the desired delivery system is
1696 * supported
1697 */
be431b16 1698 ncaps = 0;
0123f29c 1699 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
be431b16
MCC		 1700 if (fe->ops.delsys[ncaps] == desired_system) {
1701 c->delivery_system = desired_system;
1702 dev_dbg(fe->dvb->device,
1703 "%s: Changing delivery system to %d\n",
1704 __func__, desired_system);
1705 return 0;
1706 }
1707 ncaps++;
1708 }
1709
1710 /*
52dee392
MCC		 1711 * The requested delivery system isn't supported. Maybe userspace
1712 * is requesting a DVBv3 compatible delivery system.
1713 *
1714 * The emulation only works if the desired system is one of the
1715 * delivery systems supported by DVBv3 API
be431b16 1716 */
be431b16
MCC		 1717 if (!is_dvbv3_delsys(desired_system)) {
1718 dev_dbg(fe->dvb->device,
52dee392
MCC		 1719 "%s: Delivery system %d not supported.\n",
1720 __func__, desired_system);
be431b16
MCC		 1721 return -EINVAL;
1722 }
1723
52dee392
MCC		 1724 type = dvbv3_type(desired_system);
1725
be431b16
MCC		 1726 /*
1727 * Get the last non-DVBv3 delivery system that has the same type
1728 * of the desired system
1729 */
1730 ncaps = 0;
0123f29c 1731 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392 1732 if (dvbv3_type(fe->ops.delsys[ncaps]) == type)
be431b16
MCC		 1733 delsys = fe->ops.delsys[ncaps];
1734 ncaps++;
1735 }
52dee392 1736
be431b16
MCC		 1737 /* There's nothing compatible with the desired delivery system */
1738 if (delsys == SYS_UNDEFINED) {
1739 dev_dbg(fe->dvb->device,
52dee392
MCC		 1740 "%s: Delivery system %d not supported on emulation mode.\n",
1741 __func__, desired_system);
be431b16
MCC		 1742 return -EINVAL;
1743 }
1744
52dee392
MCC		 1745 dev_dbg(fe->dvb->device,
1746 "%s: Using delivery system %d emulated as if it were %d\n",
1747 __func__, delsys, desired_system);
1748
1749 return emulate_delivery_system(fe, desired_system);
be431b16
MCC		 1750}
1751
52dee392
MCC		 1752/**
1753 * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
1754 * @fe: frontend struct
1755 *
1756 * A DVBv3 call doesn't know what's the desired system it wants. It also
1757 * doesn't allow to switch between different types. Due to that, userspace
1758 * should use DVBv5 instead.
1759 * However, in order to avoid breaking userspace API, limited backward
1760 * compatibility support is provided.
1761 *
1762 * There are some delivery systems that are incompatible with DVBv3 calls.
1763 *
1764 * This routine should work fine for frontends that support just one delivery
1765 * system.
1766 *
1767 * For frontends that support multiple frontends:
1768 * 1) It defaults to use the first supported delivery system. There's an
1769 * userspace application that allows changing it at runtime;
1770 *
1771 * 2) If the current delivery system is not compatible with DVBv3, it gets
1772 * the first one that it is compatible.
1773 *
1774 * NOTE: in order for this to work with applications like Kaffeine that
1775 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1776 * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
1777 * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
1778 * to DVB-S.
1779 */
be431b16
MCC		 1780static int dvbv3_set_delivery_system(struct dvb_frontend *fe)
1781{
1782 int ncaps;
be431b16
MCC		 1783 u32 delsys = SYS_UNDEFINED;
1784 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
be431b16
MCC		 1785
1786 /* If not set yet, defaults to the first supported delivery system */
1787 if (c->delivery_system == SYS_UNDEFINED)
1788 c->delivery_system = fe->ops.delsys[0];
1789
be431b16
MCC		 1790 /*
1791 * Trivial case: just use the current one, if it already a DVBv3
1792 * delivery system
1793 */
1794 if (is_dvbv3_delsys(c->delivery_system)) {
1795 dev_dbg(fe->dvb->device,
1796 "%s: Using delivery system to %d\n",
1797 __func__, c->delivery_system);
1798 return 0;
1799 }
1800
be431b16 1801 /*
52dee392
MCC		 1802 * Seek for the first delivery system that it is compatible with a
1803 * DVBv3 standard
be431b16
MCC		 1804 */
1805 ncaps = 0;
0123f29c 1806 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392
MCC		 1807 if (dvbv3_type(fe->ops.delsys[ncaps]) != DVBV3_UNKNOWN) {
1808 delsys = fe->ops.delsys[ncaps];
be431b16
MCC		 1809 break;
1810 }
1811 ncaps++;
1812 }
1813 if (delsys == SYS_UNDEFINED) {
52dee392
MCC		 1814 dev_dbg(fe->dvb->device,
1815 "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
1816 __func__);
1817 return -EINVAL;
be431b16 1818 }
52dee392 1819 return emulate_delivery_system(fe, delsys);
be431b16
MCC		 1820}
1821
072ce0c5
MCC		 1822static int dtv_property_process_set(struct dvb_frontend *fe,
1823 struct dtv_property *tvp,
072ce0c5 1824 struct file *file)
6b73eeaf
ST		 1825{
1826 int r = 0;
50727719 1827 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1828
bfbf2dae 1829 /* Allow the frontend to validate incoming properties */
aff8ab5c 1830 if (fe->ops.set_property) {
bfbf2dae 1831 r = fe->ops.set_property(fe, tvp);
aff8ab5c
AO		 1832 if (r < 0)
1833 return r;
1834 }
bfbf2dae 1835
6b73eeaf 1836 switch(tvp->cmd) {
e7fee0f3 1837 case DTV_CLEAR:
5bfaadde
MCC		 1838 /*
1839 * Reset a cache of data specific to the frontend here. This does
6b73eeaf
ST		 1840 * not effect hardware.
1841 */
b6e760f3 1842 dvb_frontend_clear_cache(fe);
6b73eeaf 1843 break;
e7fee0f3 1844 case DTV_TUNE:
6b73eeaf 1845 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1846 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1847 * ioctl.
6b73eeaf 1848 */
50727719 1849 c->state = tvp->cmd;
36bdbc3f
AP		 1850 dev_dbg(fe->dvb->device, "%s: Finalised property cache\n",
1851 __func__);
d5748f10 1852
5bfaadde 1853 r = dtv_set_frontend(fe);
6b73eeaf 1854 break;
363429a0 1855 case DTV_FREQUENCY:
50727719 1856 c->frequency = tvp->u.data;
6b73eeaf 1857 break;
363429a0 1858 case DTV_MODULATION:
50727719 1859 c->modulation = tvp->u.data;
6b73eeaf 1860 break;
75b7f943 1861 case DTV_BANDWIDTH_HZ:
50727719 1862 c->bandwidth_hz = tvp->u.data;
6b73eeaf 1863 break;
363429a0 1864 case DTV_INVERSION:
50727719 1865 c->inversion = tvp->u.data;
6b73eeaf 1866 break;
363429a0 1867 case DTV_SYMBOL_RATE:
50727719 1868 c->symbol_rate = tvp->u.data;
6b73eeaf 1869 break;
363429a0 1870 case DTV_INNER_FEC:
50727719 1871 c->fec_inner = tvp->u.data;
6b73eeaf 1872 break;
363429a0 1873 case DTV_PILOT:
50727719 1874 c->pilot = tvp->u.data;
6b73eeaf 1875 break;
363429a0 1876 case DTV_ROLLOFF:
50727719 1877 c->rolloff = tvp->u.data;
6b73eeaf 1878 break;
363429a0 1879 case DTV_DELIVERY_SYSTEM:
be431b16 1880 r = dvbv5_set_delivery_system(fe, tvp->u.data);
6b73eeaf 1881 break;
363429a0 1882 case DTV_VOLTAGE:
50727719 1883 c->voltage = tvp->u.data;
16ef8def 1884 r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
50727719 1885 (void *)c->voltage);
13c97bf5 1886 break;
363429a0 1887 case DTV_TONE:
50727719 1888 c->sectone = tvp->u.data;
16ef8def 1889 r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
50727719 1890 (void *)c->sectone);
13c97bf5 1891 break;
a4de91be 1892 case DTV_CODE_RATE_HP:
50727719 1893 c->code_rate_HP = tvp->u.data;
a4de91be
ST		 1894 break;
1895 case DTV_CODE_RATE_LP:
50727719 1896 c->code_rate_LP = tvp->u.data;
a4de91be 1897 break;
b87625f0 1898 case DTV_GUARD_INTERVAL:
50727719 1899 c->guard_interval = tvp->u.data;
b87625f0
ST		 1900 break;
1901 case DTV_TRANSMISSION_MODE:
50727719 1902 c->transmission_mode = tvp->u.data;
b87625f0 1903 break;
ef526f42 1904 case DTV_HIERARCHY:
50727719 1905 c->hierarchy = tvp->u.data;
ef526f42 1906 break;
224b6642
AP		 1907 case DTV_INTERLEAVING:
1908 c->interleaving = tvp->u.data;
1909 break;
b6e760f3
PB		 1910
1911 /* ISDB-T Support here */
1912 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1913 c->isdbt_partial_reception = tvp->u.data;
b6e760f3
PB		 1914 break;
1915 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1916 c->isdbt_sb_mode = tvp->u.data;
b6e760f3
PB		 1917 break;
1918 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1919 c->isdbt_sb_subchannel = tvp->u.data;
b6e760f3
PB		 1920 break;
1921 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1922 c->isdbt_sb_segment_idx = tvp->u.data;
b6e760f3
PB		 1923 break;
1924 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1925 c->isdbt_sb_segment_count = tvp->u.data;
b6e760f3 1926 break;
e7b7949a 1927 case DTV_ISDBT_LAYER_ENABLED:
50727719 1928 c->isdbt_layer_enabled = tvp->u.data;
e7b7949a 1929 break;
b6e760f3 1930 case DTV_ISDBT_LAYERA_FEC:
50727719 1931 c->layer[0].fec = tvp->u.data;
b6e760f3
PB		 1932 break;
1933 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1934 c->layer[0].modulation = tvp->u.data;
b6e760f3
PB		 1935 break;
1936 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1937 c->layer[0].segment_count = tvp->u.data;
b6e760f3
PB		 1938 break;
1939 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1940 c->layer[0].interleaving = tvp->u.data;
b6e760f3
PB		 1941 break;
1942 case DTV_ISDBT_LAYERB_FEC:
50727719 1943 c->layer[1].fec = tvp->u.data;
b6e760f3
PB		 1944 break;
1945 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1946 c->layer[1].modulation = tvp->u.data;
b6e760f3
PB		 1947 break;
1948 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1949 c->layer[1].segment_count = tvp->u.data;
b6e760f3
PB		 1950 break;
1951 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1952 c->layer[1].interleaving = tvp->u.data;
b6e760f3
PB		 1953 break;
1954 case DTV_ISDBT_LAYERC_FEC:
50727719 1955 c->layer[2].fec = tvp->u.data;
b6e760f3
PB		 1956 break;
1957 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1958 c->layer[2].modulation = tvp->u.data;
b6e760f3
PB		 1959 break;
1960 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1961 c->layer[2].segment_count = tvp->u.data;
b6e760f3
PB		 1962 break;
1963 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1964 c->layer[2].interleaving = tvp->u.data;
b6e760f3 1965 break;
287cefd0
EP		 1966
1967 /* Multistream support */
1968 case DTV_STREAM_ID:
1969 case DTV_DVBT2_PLP_ID_LEGACY:
1970 c->stream_id = tvp->u.data;
98293ef3 1971 break;
ca689488
MK		 1972
1973 /* ATSC-MH */
1974 case DTV_ATSCMH_PARADE_ID:
1975 fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
1976 break;
1977 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1978 fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
1979 break;
1980
33eebec5
AP		 1981 case DTV_LNA:
1982 c->lna = tvp->u.data;
1983 if (fe->ops.set_lna)
1984 r = fe->ops.set_lna(fe);
e6876692
MCC		 1985 if (r < 0)
1986 c->lna = LNA_AUTO;
33eebec5
AP		 1987 break;
1988
363429a0 1989 default:
aff8ab5c 1990 return -EINVAL;
6b73eeaf
ST		 1991 }
1992
13c97bf5 1993 return r;
6b73eeaf
ST		 1994}
1995
16ef8def 1996static int dvb_frontend_ioctl(struct file *file,
1da177e4
LT		 1997 unsigned int cmd, void *parg)
1998{
1999 struct dvb_device *dvbdev = file->private_data;
2000 struct dvb_frontend *fe = dvbdev->priv;
50727719 2001 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 2002 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac897586 2003 int err = -EOPNOTSUPP;
1da177e4 2004
36bdbc3f 2005 dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
6ae23224
JL		 2006 if (down_interruptible(&fepriv->sem))
2007 return -ERESTARTSYS;
2008
18ed2860 2009 if (fe->exit != DVB_FE_NO_EXIT) {
6ae23224 2010 up(&fepriv->sem);
1da177e4 2011 return -ENODEV;
6ae23224 2012 }
1da177e4
LT		 2013
2014 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
2015 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
6ae23224
JL		 2016 cmd == FE_DISEQC_RECV_SLAVE_REPLY)) {
2017 up(&fepriv->sem);
1da177e4 2018 return -EPERM;
6ae23224 2019 }
1da177e4 2020
13c97bf5 2021 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
16ef8def 2022 err = dvb_frontend_ioctl_properties(file, cmd, parg);
4dd88bec 2023 else {
50727719 2024 c->state = DTV_UNDEFINED;
16ef8def 2025 err = dvb_frontend_ioctl_legacy(file, cmd, parg);
4dd88bec 2026 }
13c97bf5
ST		 2027
2028 up(&fepriv->sem);
2029 return err;
2030}
2031
16ef8def 2032static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 2033 unsigned int cmd, void *parg)
2034{
2035 struct dvb_device *dvbdev = file->private_data;
2036 struct dvb_frontend *fe = dvbdev->priv;
51dcb19a 2037 struct dvb_frontend_private *fepriv = fe->frontend_priv;
50727719 2038 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
e6f9ec86 2039 int err = 0;
e7fee0f3 2040
71d1b2be 2041 struct dtv_properties *tvps = parg;
e7fee0f3
ST		 2042 struct dtv_property *tvp = NULL;
2043 int i;
13c97bf5 2044
36bdbc3f 2045 dev_dbg(fe->dvb->device, "%s:\n", __func__);
13c97bf5 2046
71d1b2be 2047 if (cmd == FE_SET_PROPERTY) {
36bdbc3f
AP		 2048 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
2049 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 2050
2051 /* Put an arbitrary limit on the number of messages that can
2052 * be sent at once */
6068f506 2053 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 2054 return -EINVAL;
2055
6e3924aa 2056 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
e7fee0f3
ST		 2057 if (!tvp) {
2058 err = -ENOMEM;
2059 goto out;
6b73eeaf
ST		 2060 }
2061
71d1b2be
MCC		 2062 if (copy_from_user(tvp, (void __user *)tvps->props,
2063 tvps->num * sizeof(struct dtv_property))) {
e7fee0f3
ST		 2064 err = -EFAULT;
2065 goto out;
2066 }
2067
d48cb402 2068 for (i = 0; i < tvps->num; i++) {
aff8ab5c
AO		 2069 err = dtv_property_process_set(fe, tvp + i, file);
2070 if (err < 0)
2071 goto out;
2072 (tvp + i)->result = err;
d48cb402 2073 }
e7fee0f3 2074
50727719 2075 if (c->state == DTV_TUNE)
36bdbc3f 2076 dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
bfbf2dae 2077
71d1b2be 2078 } else if (cmd == FE_GET_PROPERTY) {
36bdbc3f
AP		 2079 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
2080 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 2081
2082 /* Put an arbitrary limit on the number of messages that can
2083 * be sent at once */
6068f506 2084 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 2085 return -EINVAL;
2086
6e3924aa 2087 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
363429a0
ST		 2088 if (!tvp) {
2089 err = -ENOMEM;
2090 goto out;
2091 }
2092
71d1b2be
MCC		 2093 if (copy_from_user(tvp, (void __user *)tvps->props,
2094 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2095 err = -EFAULT;
2096 goto out;
2097 }
2098
a689e365
MCC		 2099 /*
2100 * Fills the cache out struct with the cache contents, plus
51dcb19a
MCC		 2101 * the data retrieved from get_frontend, if the frontend
2102 * is not idle. Otherwise, returns the cached content
a689e365 2103 */
51dcb19a
MCC		 2104 if (fepriv->state != FESTATE_IDLE) {
2105 err = dtv_get_frontend(fe, NULL);
2106 if (err < 0)
2107 goto out;
2108 }
d48cb402 2109 for (i = 0; i < tvps->num; i++) {
7c61d80a 2110 err = dtv_property_process_get(fe, c, tvp + i, file);
aff8ab5c
AO		 2111 if (err < 0)
2112 goto out;
2113 (tvp + i)->result = err;
d48cb402 2114 }
363429a0 2115
71d1b2be
MCC		 2116 if (copy_to_user((void __user *)tvps->props, tvp,
2117 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2118 err = -EFAULT;
2119 goto out;
2120 }
2121
363429a0 2122 } else
ac897586 2123 err = -EOPNOTSUPP;
363429a0 2124
e7fee0f3
ST		 2125out:
2126 kfree(tvp);
13c97bf5
ST		 2127 return err;
2128}
2129
5bfaadde 2130static int dtv_set_frontend(struct dvb_frontend *fe)
9682cea2 2131{
9682cea2
MCC		 2132 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2133 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
2134 struct dvb_frontend_tune_settings fetunesettings;
5bfaadde 2135 u32 rolloff = 0;
9682cea2 2136
5bfaadde
MCC		 2137 if (dvb_frontend_check_parameters(fe) < 0)
2138 return -EINVAL;
9682cea2 2139
556a0442
CR		 2140 /*
2141 * Initialize output parameters to match the values given by
2142 * the user. FE_SET_FRONTEND triggers an initial frontend event
2143 * with status = 0, which copies output parameters to userspace.
2144 */
2145 dtv_property_legacy_params_sync(fe, &fepriv->parameters_out);
2146
5bfaadde
MCC		 2147 /*
2148 * Be sure that the bandwidth will be filled for all
2149 * non-satellite systems, as tuners need to know what
2150 * low pass/Nyquist half filter should be applied, in
2151 * order to avoid inter-channel noise.
2152 *
2153 * ISDB-T and DVB-T/T2 already sets bandwidth.
2154 * ATSC and DVB-C don't set, so, the core should fill it.
2155 *
2156 * On DVB-C Annex A and C, the bandwidth is a function of
2157 * the roll-off and symbol rate. Annex B defines different
2158 * roll-off factors depending on the modulation. Fortunately,
2159 * Annex B is only used with 6MHz, so there's no need to
2160 * calculate it.
2161 *
2162 * While not officially supported, a side effect of handling it at
2163 * the cache level is that a program could retrieve the bandwidth
2164 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
2165 */
2166 switch (c->delivery_system) {
2167 case SYS_ATSC:
2168 case SYS_DVBC_ANNEX_B:
2169 c->bandwidth_hz = 6000000;
2170 break;
2171 case SYS_DVBC_ANNEX_A:
2172 rolloff = 115;
2173 break;
2174 case SYS_DVBC_ANNEX_C:
2175 rolloff = 113;
2176 break;
c623ed63
MCC		 2177 case SYS_DVBS:
2178 case SYS_TURBO:
8e281faf 2179 case SYS_ISDBS:
c623ed63
MCC		 2180 rolloff = 135;
2181 break;
2182 case SYS_DVBS2:
2183 switch (c->rolloff) {
2184 case ROLLOFF_20:
2185 rolloff = 120;
2186 break;
2187 case ROLLOFF_25:
2188 rolloff = 125;
2189 break;
2190 default:
2191 case ROLLOFF_35:
2192 rolloff = 135;
2193 }
2194 break;
5bfaadde
MCC		 2195 default:
2196 break;
2197 }
2198 if (rolloff)
2a80f296 2199 c->bandwidth_hz = mult_frac(c->symbol_rate, rolloff, 100);
9682cea2
MCC		 2200
2201 /* force auto frequency inversion if requested */
5bfaadde 2202 if (dvb_force_auto_inversion)
9682cea2 2203 c->inversion = INVERSION_AUTO;
5bfaadde
MCC		 2204
2205 /*
2206 * without hierarchical coding code_rate_LP is irrelevant,
2207 * so we tolerate the otherwise invalid FEC_NONE setting
2208 */
2209 if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
2210 c->code_rate_LP = FEC_AUTO;
9682cea2
MCC		 2211
2212 /* get frontend-specific tuning settings */
5bfaadde 2213 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
9682cea2
MCC		 2214 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
2215 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
2216 fepriv->max_drift = fetunesettings.max_drift;
2217 fepriv->step_size = fetunesettings.step_size;
2218 } else {
2219 /* default values */
5bfaadde 2220 switch (c->delivery_system) {
910a5f2e
MCC		 2221 case SYS_DVBS:
2222 case SYS_DVBS2:
2223 case SYS_ISDBS:
2224 case SYS_TURBO:
5bfaadde
MCC		 2225 case SYS_DVBC_ANNEX_A:
2226 case SYS_DVBC_ANNEX_C:
2227 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2228 fepriv->step_size = c->symbol_rate / 16000;
2229 fepriv->max_drift = c->symbol_rate / 2000;
2230 break;
5bfaadde
MCC		 2231 case SYS_DVBT:
2232 case SYS_DVBT2:
2233 case SYS_ISDBT:
224b6642 2234 case SYS_DTMB:
5bfaadde 2235 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2236 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
2237 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
2238 break;
5bfaadde
MCC		 2239 default:
2240 /*
2241 * FIXME: This sounds wrong! if freqency_stepsize is
2242 * defined by the frontend, why not use it???
2243 */
2244 fepriv->min_delay = HZ / 20;
2245 fepriv->step_size = 0; /* no zigzag */
9682cea2
MCC		 2246 fepriv->max_drift = 0;
2247 break;
2248 }
2249 }
2250 if (dvb_override_tune_delay > 0)
2251 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
2252
2253 fepriv->state = FESTATE_RETUNE;
2254
2255 /* Request the search algorithm to search */
2256 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
2257
2258 dvb_frontend_clear_events(fe);
2259 dvb_frontend_add_event(fe, 0);
2260 dvb_frontend_wakeup(fe);
2261 fepriv->status = 0;
2262
2263 return 0;
2264}
2265
2266
16ef8def 2267static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5
ST		 2268 unsigned int cmd, void *parg)
2269{
2270 struct dvb_device *dvbdev = file->private_data;
2271 struct dvb_frontend *fe = dvbdev->priv;
2272 struct dvb_frontend_private *fepriv = fe->frontend_priv;
5bfaadde 2273 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
ac897586 2274 int err = -EOPNOTSUPP;
13c97bf5 2275
1da177e4
LT		 2276 switch (cmd) {
2277 case FE_GET_INFO: {
0c53c70f 2278 struct dvb_frontend_info* info = parg;
9474c5e6 2279
dea74869 2280 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
2030c032 2281 dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4 2282
5bfaadde
MCC		 2283 /*
2284 * Associate the 4 delivery systems supported by DVBv3
2285 * API with their DVBv5 counterpart. For the other standards,
2286 * use the closest type, assuming that it would hopefully
2287 * work with a DVBv3 application.
2288 * It should be noticed that, on multi-frontend devices with
2289 * different types (terrestrial and cable, for example),
2290 * a pure DVBv3 application won't be able to use all delivery
2291 * systems. Yet, changing the DVBv5 cache to the other delivery
2292 * system should be enough for making it work.
2293 */
2294 switch (dvbv3_type(c->delivery_system)) {
2295 case DVBV3_QPSK:
9474c5e6 2296 info->type = FE_QPSK;
5bfaadde
MCC		 2297 break;
2298 case DVBV3_ATSC:
9474c5e6 2299 info->type = FE_ATSC;
5bfaadde
MCC		 2300 break;
2301 case DVBV3_QAM:
9474c5e6 2302 info->type = FE_QAM;
5bfaadde
MCC		 2303 break;
2304 case DVBV3_OFDM:
9474c5e6 2305 info->type = FE_OFDM;
5bfaadde
MCC		 2306 break;
2307 default:
36bdbc3f
AP		 2308 dev_err(fe->dvb->device,
2309 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
2310 __func__, c->delivery_system);
5bfaadde
MCC		 2311 fe->ops.info.type = FE_OFDM;
2312 }
36bdbc3f
AP		 2313 dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
2314 __func__, c->delivery_system, fe->ops.info.type);
5bfaadde 2315
1da177e4
LT		 2316 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
2317 * do it, it is done for it. */
2318 info->caps |= FE_CAN_INVERSION_AUTO;
2319 err = 0;
2320 break;
2321 }
2322
6757ccc5 2323 case FE_READ_STATUS: {
0df289a2 2324 enum fe_status *status = parg;
6757ccc5 2325
25985edc 2326 /* if retune was requested but hasn't occurred yet, prevent
6757ccc5 2327 * that user get signal state from previous tuning */
01886255
JG		 2328 if (fepriv->state == FESTATE_RETUNE ||
2329 fepriv->state == FESTATE_ERROR) {
6757ccc5
PB		 2330 err=0;
2331 *status = 0;
2332 break;
2333 }
2334
dea74869
PB		 2335 if (fe->ops.read_status)
2336 err = fe->ops.read_status(fe, status);
1da177e4 2337 break;
6757ccc5 2338 }
48caa6f1 2339
1da177e4 2340 case FE_READ_BER:
48caa6f1
AP		 2341 if (fe->ops.read_ber) {
2342 if (fepriv->thread)
2343 err = fe->ops.read_ber(fe, (__u32 *) parg);
2344 else
2345 err = -EAGAIN;
2346 }
1da177e4
LT		 2347 break;
2348
2349 case FE_READ_SIGNAL_STRENGTH:
48caa6f1
AP		 2350 if (fe->ops.read_signal_strength) {
2351 if (fepriv->thread)
2352 err = fe->ops.read_signal_strength(fe, (__u16 *) parg);
2353 else
2354 err = -EAGAIN;
2355 }
1da177e4
LT		 2356 break;
2357
2358 case FE_READ_SNR:
48caa6f1
AP		 2359 if (fe->ops.read_snr) {
2360 if (fepriv->thread)
2361 err = fe->ops.read_snr(fe, (__u16 *) parg);
2362 else
2363 err = -EAGAIN;
2364 }
1da177e4
LT		 2365 break;
2366
2367 case FE_READ_UNCORRECTED_BLOCKS:
48caa6f1
AP		 2368 if (fe->ops.read_ucblocks) {
2369 if (fepriv->thread)
2370 err = fe->ops.read_ucblocks(fe, (__u32 *) parg);
2371 else
2372 err = -EAGAIN;
2373 }
1da177e4
LT		 2374 break;
2375
1da177e4 2376 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 2377 if (fe->ops.diseqc_reset_overload) {
2378 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 2379 fepriv->state = FESTATE_DISEQC;
2380 fepriv->status = 0;
2381 }
2382 break;
2383
2384 case FE_DISEQC_SEND_MASTER_CMD:
dea74869 2385 if (fe->ops.diseqc_send_master_cmd) {
8d7e5063
DC		 2386 struct dvb_diseqc_master_cmd *cmd = parg;
2387
2388 if (cmd->msg_len > sizeof(cmd->msg)) {
2389 err = -EINVAL;
2390 break;
2391 }
2392 err = fe->ops.diseqc_send_master_cmd(fe, cmd);
1da177e4
LT		 2393 fepriv->state = FESTATE_DISEQC;
2394 fepriv->status = 0;
2395 }
2396 break;
2397
2398 case FE_DISEQC_SEND_BURST:
dea74869 2399 if (fe->ops.diseqc_send_burst) {
0df289a2
MCC		 2400 err = fe->ops.diseqc_send_burst(fe,
2401 (enum fe_sec_mini_cmd)parg);
1da177e4
LT		 2402 fepriv->state = FESTATE_DISEQC;
2403 fepriv->status = 0;
2404 }
2405 break;
2406
2407 case FE_SET_TONE:
dea74869 2408 if (fe->ops.set_tone) {
0df289a2
MCC		 2409 err = fe->ops.set_tone(fe,
2410 (enum fe_sec_tone_mode)parg);
2411 fepriv->tone = (enum fe_sec_tone_mode)parg;
1da177e4
LT		 2412 fepriv->state = FESTATE_DISEQC;
2413 fepriv->status = 0;
2414 }
2415 break;
2416
2417 case FE_SET_VOLTAGE:
dea74869 2418 if (fe->ops.set_voltage) {
0df289a2
MCC		 2419 err = fe->ops.set_voltage(fe,
2420 (enum fe_sec_voltage)parg);
2421 fepriv->voltage = (enum fe_sec_voltage)parg;
1da177e4
LT		 2422 fepriv->state = FESTATE_DISEQC;
2423 fepriv->status = 0;
2424 }
2425 break;
2426
2427 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869 2428 if (fe->ops.dishnetwork_send_legacy_command) {
0df289a2
MCC		 2429 err = fe->ops.dishnetwork_send_legacy_command(fe,
2430 (unsigned long)parg);
1da177e4
LT		 2431 fepriv->state = FESTATE_DISEQC;
2432 fepriv->status = 0;
dea74869 2433 } else if (fe->ops.set_voltage) {
83b75b04
N		 2434 /*
2435 * NOTE: This is a fallback condition. Some frontends
2436 * (stv0299 for instance) take longer than 8msec to
2437 * respond to a set_voltage command. Those switches
2438 * need custom routines to switch properly. For all
2030c032 2439 * other frontends, the following should work ok.
83b75b04
N		 2440 * Dish network legacy switches (as used by Dish500)
2441 * are controlled by sending 9-bit command words
2442 * spaced 8msec apart.
25985edc 2443 * the actual command word is switch/port dependent
83b75b04
N		 2444 * so it is up to the userspace application to send
2445 * the right command.
2446 * The command must always start with a '0' after
2447 * initialization, so parg is 8 bits and does not
2448 * include the initialization or start bit
2449 */
c6eb8eaf 2450 unsigned long swcmd = ((unsigned long) parg) << 1;
9056a23b
TR		 2451 ktime_t nexttime;
2452 ktime_t tv[10];
83b75b04
N		 2453 int i;
2454 u8 last = 1;
2455 if (dvb_frontend_debug)
c6eb8eaf 2456 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
9056a23b 2457 nexttime = ktime_get_real();
83b75b04 2458 if (dvb_frontend_debug)
b9b1b3a8 2459 tv[0] = nexttime;
83b75b04
N		 2460 /* before sending a command, initialize by sending
2461 * a 32ms 18V to the switch
2462 */
dea74869 2463 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 2464 dvb_frontend_sleep_until(&nexttime, 32000);
2465
2466 for (i = 0; i < 9; i++) {
2467 if (dvb_frontend_debug)
9056a23b 2468 tv[i+1] = ktime_get_real();
c6eb8eaf 2469 if ((swcmd & 0x01) != last) {
83b75b04 2470 /* set voltage to (last ? 13V : 18V) */
dea74869 2471 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 2472 last = (last) ? 0 : 1;
2473 }
c6eb8eaf 2474 swcmd = swcmd >> 1;
83b75b04
N		 2475 if (i != 8)
2476 dvb_frontend_sleep_until(&nexttime, 8000);
2477 }
2478 if (dvb_frontend_debug) {
2479 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 2480 __func__, fe->dvb->num);
83b75b04 2481 for (i = 1; i < 10; i++)
9056a23b
TR		 2482 printk("%d: %d\n", i,
2483 (int) ktime_us_delta(tv[i], tv[i-1]));
83b75b04
N		 2484 }
2485 err = 0;
2486 fepriv->state = FESTATE_DISEQC;
2487 fepriv->status = 0;
1da177e4
LT		 2488 }
2489 break;
2490
2491 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 2492 if (fe->ops.diseqc_recv_slave_reply)
2493 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 2494 break;
2495
2496 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 2497 if (fe->ops.enable_high_lnb_voltage)
2498 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 2499 break;
2500
9682cea2 2501 case FE_SET_FRONTEND:
be431b16 2502 err = dvbv3_set_delivery_system(fe);
04be0f76
MCC		 2503 if (err)
2504 break;
2505
e399ce77 2506 err = dtv_property_cache_sync(fe, c, parg);
5bfaadde
MCC		 2507 if (err)
2508 break;
2509 err = dtv_set_frontend(fe);
1da177e4 2510 break;
1da177e4
LT		 2511 case FE_GET_EVENT:
2512 err = dvb_frontend_get_event (fe, parg, file->f_flags);
2513 break;
2514
2515 case FE_GET_FRONTEND:
e399ce77 2516 err = dtv_get_frontend(fe, parg);
1da177e4 2517 break;
36cb557a
AQ		 2518
2519 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 2520 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 2521 err = 0;
36cb557a 2522 break;
c2c1b415 2523 }
1da177e4 2524
1da177e4
LT		 2525 return err;
2526}
2527
6b73eeaf 2528
1da177e4
LT		 2529static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
2530{
2531 struct dvb_device *dvbdev = file->private_data;
2532 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2533 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 2534
36bdbc3f 2535 dev_dbg_ratelimited(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 2536
2537 poll_wait (file, &fepriv->events.wait_queue, wait);
2538
2539 if (fepriv->events.eventw != fepriv->events.eventr)
2540 return (POLLIN | POLLRDNORM | POLLPRI);
2541
2542 return 0;
2543}
2544
2545static int dvb_frontend_open(struct inode *inode, struct file *file)
2546{
2547 struct dvb_device *dvbdev = file->private_data;
2548 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2549 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 2550 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 2551 int ret;
2552
36bdbc3f 2553 dev_dbg(fe->dvb->device, "%s:\n", __func__);
18ed2860 2554 if (fe->exit == DVB_FE_DEVICE_REMOVED)
e36309f5 2555 return -ENODEV;
1da177e4 2556
59b1842d
DB		 2557 if (adapter->mfe_shared) {
2558 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 2559
2560 if (adapter->mfe_dvbdev == NULL)
2561 adapter->mfe_dvbdev = dvbdev;
2562
2563 else if (adapter->mfe_dvbdev != dvbdev) {
2564 struct dvb_device
2565 *mfedev = adapter->mfe_dvbdev;
2566 struct dvb_frontend
2567 *mfe = mfedev->priv;
2568 struct dvb_frontend_private
2569 *mfepriv = mfe->frontend_priv;
2570 int mferetry = (dvb_mfe_wait_time << 1);
2571
2572 mutex_unlock (&adapter->mfe_lock);
2573 while (mferetry-- && (mfedev->users != -1 ||
2574 mfepriv->thread != NULL)) {
2575 if(msleep_interruptible(500)) {
2576 if(signal_pending(current))
2577 return -EINTR;
59b1842d 2578 }
6594690b
DB		 2579 }
2580
2581 mutex_lock (&adapter->mfe_lock);
2582 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 2583 mfedev = adapter->mfe_dvbdev;
2584 mfe = mfedev->priv;
2585 mfepriv = mfe->frontend_priv;
6594690b
DB		 2586 if (mfedev->users != -1 ||
2587 mfepriv->thread != NULL) {
2588 mutex_unlock (&adapter->mfe_lock);
2589 return -EBUSY;
59b1842d 2590 }
6594690b 2591 adapter->mfe_dvbdev = dvbdev;
59b1842d 2592 }
59b1842d
DB		 2593 }
2594 }
2595
48136e1e
OE		 2596 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
2597 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 2598 goto err0;
2d196931
DH		 2599
2600 /* If we took control of the bus, we need to force
2601 reinitialization. This is because many ts_bus_ctrl()
2602 functions strobe the RESET pin on the demod, and if the
2603 frontend thread already exists then the dvb_init() routine
2604 won't get called (which is what usually does initial
2605 register configuration). */
2606 fepriv->reinitialise = 1;
ba7e6f3e
ST		 2607 }
2608
48136e1e
OE		 2609 if ((ret = dvb_generic_open (inode, file)) < 0)
2610 goto err1;
04c56d0e 2611
48136e1e 2612 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 2613 /* normal tune mode when opened R/W */
2614 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
2615 fepriv->tone = -1;
2616 fepriv->voltage = -1;
2617
1da177e4
LT		 2618 ret = dvb_frontend_start (fe);
2619 if (ret)
48136e1e 2620 goto err2;
1da177e4
LT		 2621
2622 /* empty event queue */
2623 fepriv->events.eventr = fepriv->events.eventw = 0;
2624 }
2625
59b1842d
DB		 2626 if (adapter->mfe_shared)
2627 mutex_unlock (&adapter->mfe_lock);
1da177e4 2628 return ret;
48136e1e
OE		 2629
2630err2:
2631 dvb_generic_release(inode, file);
2632err1:
2633 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
2634 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 2635err0:
2636 if (adapter->mfe_shared)
2637 mutex_unlock (&adapter->mfe_lock);
48136e1e 2638 return ret;
1da177e4
LT		 2639}
2640
2641static int dvb_frontend_release(struct inode *inode, struct file *file)
2642{
2643 struct dvb_device *dvbdev = file->private_data;
2644 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2645 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 2646 int ret;
1da177e4 2647
36bdbc3f 2648 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2649
b9d5efcc 2650 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1da177e4 2651 fepriv->release_jiffies = jiffies;
b9d5efcc
AO		 2652 mb();
2653 }
1da177e4 2654
ca5be9cd
MR		 2655 ret = dvb_generic_release (inode, file);
2656
48136e1e 2657 if (dvbdev->users == -1) {
b9d5efcc 2658 wake_up(&fepriv->wait_queue);
18ed2860 2659 if (fe->exit != DVB_FE_NO_EXIT)
48136e1e 2660 wake_up(&dvbdev->wait_queue);
48136e1e
OE		 2661 if (fe->ops.ts_bus_ctrl)
2662 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 2663 }
48136e1e 2664
ca5be9cd 2665 return ret;
1da177e4
LT		 2666}
2667
784e29d2 2668static const struct file_operations dvb_frontend_fops = {
1da177e4 2669 .owner = THIS_MODULE,
16ef8def 2670 .unlocked_ioctl = dvb_generic_ioctl,
1da177e4
LT		 2671 .poll = dvb_frontend_poll,
2672 .open = dvb_frontend_open,
6038f373
AB		 2673 .release = dvb_frontend_release,
2674 .llseek = noop_llseek,
1da177e4
LT		 2675};
2676
06bae122
AP		 2677int dvb_frontend_suspend(struct dvb_frontend *fe)
2678{
2679 int ret = 0;
2680
2681 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2682 fe->id);
2683
59d7889a
MCC		 2684 if (fe->ops.tuner_ops.suspend)
2685 ret = fe->ops.tuner_ops.suspend(fe);
2686 else if (fe->ops.tuner_ops.sleep)
06bae122
AP		 2687 ret = fe->ops.tuner_ops.sleep(fe);
2688
2689 if (fe->ops.sleep)
2690 ret = fe->ops.sleep(fe);
2691
2692 return ret;
2693}
2694EXPORT_SYMBOL(dvb_frontend_suspend);
2695
2696int dvb_frontend_resume(struct dvb_frontend *fe)
2697{
2698 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2699 int ret = 0;
2700
2701 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2702 fe->id);
2703
87cd0fa8 2704 fe->exit = DVB_FE_DEVICE_RESUME;
06bae122
AP		 2705 if (fe->ops.init)
2706 ret = fe->ops.init(fe);
2707
59d7889a
MCC		 2708 if (fe->ops.tuner_ops.resume)
2709 ret = fe->ops.tuner_ops.resume(fe);
2710 else if (fe->ops.tuner_ops.init)
06bae122
AP		 2711 ret = fe->ops.tuner_ops.init(fe);
2712
87cd0fa8 2713 fe->exit = DVB_FE_NO_EXIT;
06bae122
AP		 2714 fepriv->state = FESTATE_RETUNE;
2715 dvb_frontend_wakeup(fe);
2716
2717 return ret;
2718}
2719EXPORT_SYMBOL(dvb_frontend_resume);
2720
1da177e4
LT		 2721int dvb_register_frontend(struct dvb_adapter* dvb,
2722 struct dvb_frontend* fe)
2723{
2724 struct dvb_frontend_private *fepriv;
c1b31b1e 2725 const struct dvb_device dvbdev_template = {
1da177e4
LT		 2726 .users = ~0,
2727 .writers = 1,
2728 .readers = (~0)-1,
2729 .fops = &dvb_frontend_fops,
c1b31b1e
MCC		 2730#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
2731 .name = fe->ops.info.name,
2732#endif
1da177e4
LT		 2733 .kernel_ioctl = dvb_frontend_ioctl
2734 };
2735
36bdbc3f 2736 dev_dbg(dvb->device, "%s:\n", __func__);
1da177e4 2737
3593cab5 2738 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 2739 return -ERESTARTSYS;
2740
7408187d 2741 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 2742 if (fe->frontend_priv == NULL) {
3593cab5 2743 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2744 return -ENOMEM;
2745 }
0c53c70f 2746 fepriv = fe->frontend_priv;
1da177e4 2747
a0a4714c 2748 sema_init(&fepriv->sem, 1);
1da177e4
LT		 2749 init_waitqueue_head (&fepriv->wait_queue);
2750 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 2751 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 2752 fe->dvb = dvb;
2753 fepriv->inversion = INVERSION_OFF;
2754
36bdbc3f
AP		 2755 dev_info(fe->dvb->device,
2756 "DVB: registering adapter %i frontend %i (%s)...\n",
2757 fe->dvb->num, fe->id, fe->ops.info.name);
1da177e4
LT		 2758
2759 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
2760 fe, DVB_DEVICE_FRONTEND);
2761
5bfaadde
MCC		 2762 /*
2763 * Initialize the cache to the proper values according with the
2764 * first supported delivery system (ops->delsys[0])
2765 */
240ab508 2766
be431b16 2767 fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
5bfaadde
MCC		 2768 dvb_frontend_clear_cache(fe);
2769
3593cab5 2770 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2771 return 0;
2772}
2773EXPORT_SYMBOL(dvb_register_frontend);
2774
2775int dvb_unregister_frontend(struct dvb_frontend* fe)
2776{
0c53c70f 2777 struct dvb_frontend_private *fepriv = fe->frontend_priv;
36bdbc3f 2778 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2779
57861b43 2780 mutex_lock(&frontend_mutex);
ca5be9cd 2781 dvb_frontend_stop (fe);
57861b43
MR		 2782 mutex_unlock(&frontend_mutex);
2783
2784 if (fepriv->dvbdev->users < -1)
2785 wait_event(fepriv->dvbdev->wait_queue,
2786 fepriv->dvbdev->users==-1);
2787
3593cab5 2788 mutex_lock(&frontend_mutex);
1da177e4 2789 dvb_unregister_device (fepriv->dvbdev);
d9955060 2790
1da177e4
LT		 2791 /* fe is invalid now */
2792 kfree(fepriv);
3593cab5 2793 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2794 return 0;
2795}
2796EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 2797
149ef72d 2798#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 2799void dvb_frontend_detach(struct dvb_frontend* fe)
2800{
2801 void *ptr;
2802
2803 if (fe->ops.release_sec) {
2804 fe->ops.release_sec(fe);
4647f487 2805 dvb_detach(fe->ops.release_sec);
f52a838b
AQ		 2806 }
2807 if (fe->ops.tuner_ops.release) {
2808 fe->ops.tuner_ops.release(fe);
4647f487 2809 dvb_detach(fe->ops.tuner_ops.release);
f52a838b 2810 }
2426a27e
MK		 2811 if (fe->ops.analog_ops.release) {
2812 fe->ops.analog_ops.release(fe);
4647f487 2813 dvb_detach(fe->ops.analog_ops.release);
2426a27e 2814 }
f52a838b
AQ		 2815 ptr = (void*)fe->ops.release;
2816 if (ptr) {
2817 fe->ops.release(fe);
4647f487 2818 dvb_detach(ptr);
f52a838b
AQ		 2819 }
2820}
2821#else
2822void dvb_frontend_detach(struct dvb_frontend* fe)
2823{
2824 if (fe->ops.release_sec)
2825 fe->ops.release_sec(fe);
2826 if (fe->ops.tuner_ops.release)
2827 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 2828 if (fe->ops.analog_ops.release)
2829 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 2830 if (fe->ops.release)
2831 fe->ops.release(fe);
2832}
2833#endif
2834EXPORT_SYMBOL(dvb_frontend_detach);
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