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V4L/DVB (9070): S2API: Removed the typedef for the commands, used defines instead.
[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb / 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
28#include <linux/string.h>
29#include <linux/kernel.h>
30#include <linux/sched.h>
31#include <linux/wait.h>
32#include <linux/slab.h>
33#include <linux/poll.h>
34#include <linux/module.h>
1da177e4 35#include <linux/list.h>
7dfb7103 36#include <linux/freezer.h>
cc89c229 37#include <linux/jiffies.h>
8eec1429 38#include <linux/kthread.h>
1da177e4 39#include <asm/processor.h>
1da177e4
LT		 40
41#include "dvb_frontend.h"
42#include "dvbdev.h"
43
44static int dvb_frontend_debug;
849be2cd 45static int dvb_shutdown_timeout;
1da177e4
LT		 46static int dvb_force_auto_inversion;
47static int dvb_override_tune_delay;
48static int dvb_powerdown_on_sleep = 1;
49
50module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 51MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 52module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 53MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 54module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 55MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 56module_param(dvb_override_tune_delay, int, 0644);
1da177e4 57MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 58module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 59MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
1da177e4
LT		 60
61#define dprintk if (dvb_frontend_debug) printk
62
63#define FESTATE_IDLE 1
64#define FESTATE_RETUNE 2
65#define FESTATE_TUNING_FAST 4
66#define FESTATE_TUNING_SLOW 8
67#define FESTATE_TUNED 16
68#define FESTATE_ZIGZAG_FAST 32
69#define FESTATE_ZIGZAG_SLOW 64
70#define FESTATE_DISEQC 128
71#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
72#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
73#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
74#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16
MA		 75
76#define FE_ALGO_HW 1
1da177e4
LT		 77/*
78 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
79 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
80 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
81 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
82 * FESTATE_TUNED. The frontend has successfully locked on.
83 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
84 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
85 * FESTATE_DISEQC. A DISEQC command has just been issued.
86 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
87 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
88 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
89 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
90 */
91
3593cab5 92static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 93
94struct dvb_frontend_private {
95
36cb557a 96 /* thread/frontend values */
1da177e4
LT		 97 struct dvb_device *dvbdev;
98 struct dvb_frontend_parameters parameters;
99 struct dvb_fe_events events;
100 struct semaphore sem;
101 struct list_head list_head;
102 wait_queue_head_t wait_queue;
8eec1429 103 struct task_struct *thread;
1da177e4 104 unsigned long release_jiffies;
36cb557a
AQ		 105 unsigned int exit;
106 unsigned int wakeup;
1da177e4 107 fe_status_t status;
400b7083 108 unsigned long tune_mode_flags;
36cb557a 109 unsigned int delay;
86f40cc3 110 unsigned int reinitialise;
64454016
AQ		 111 int tone;
112 int voltage;
36cb557a
AQ		 113
114 /* swzigzag values */
115 unsigned int state;
116 unsigned int bending;
117 int lnb_drift;
118 unsigned int inversion;
119 unsigned int auto_step;
120 unsigned int auto_sub_step;
121 unsigned int started_auto_step;
122 unsigned int min_delay;
123 unsigned int max_drift;
124 unsigned int step_size;
125 int quality;
126 unsigned int check_wrapped;
1da177e4
LT		 127};
128
86f40cc3 129static void dvb_frontend_wakeup(struct dvb_frontend *fe);
1da177e4
LT		 130
131static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
132{
0c53c70f 133 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 134 struct dvb_fe_events *events = &fepriv->events;
135 struct dvb_frontend_event *e;
136 int wp;
137
46b4f7c1 138 dprintk ("%s\n", __func__);
1da177e4 139
03b76123 140 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 141 return;
142
143 wp = (events->eventw + 1) % MAX_EVENT;
144
145 if (wp == events->eventr) {
146 events->overflow = 1;
147 events->eventr = (events->eventr + 1) % MAX_EVENT;
148 }
149
150 e = &events->events[events->eventw];
151
152 memcpy (&e->parameters, &fepriv->parameters,
153 sizeof (struct dvb_frontend_parameters));
154
155 if (status & FE_HAS_LOCK)
dea74869
PB		 156 if (fe->ops.get_frontend)
157 fe->ops.get_frontend(fe, &e->parameters);
1da177e4
LT		 158
159 events->eventw = wp;
160
03b76123 161 mutex_unlock(&events->mtx);
1da177e4
LT		 162
163 e->status = status;
164
165 wake_up_interruptible (&events->wait_queue);
166}
167
168static int dvb_frontend_get_event(struct dvb_frontend *fe,
169 struct dvb_frontend_event *event, int flags)
170{
0c53c70f 171 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 172 struct dvb_fe_events *events = &fepriv->events;
173
46b4f7c1 174 dprintk ("%s\n", __func__);
1da177e4
LT		 175
176 if (events->overflow) {
177 events->overflow = 0;
178 return -EOVERFLOW;
179 }
180
181 if (events->eventw == events->eventr) {
182 int ret;
183
184 if (flags & O_NONBLOCK)
185 return -EWOULDBLOCK;
186
187 up(&fepriv->sem);
188
189 ret = wait_event_interruptible (events->wait_queue,
190 events->eventw != events->eventr);
191
192 if (down_interruptible (&fepriv->sem))
193 return -ERESTARTSYS;
194
195 if (ret < 0)
196 return ret;
197 }
198
03b76123 199 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 200 return -ERESTARTSYS;
201
202 memcpy (event, &events->events[events->eventr],
203 sizeof(struct dvb_frontend_event));
204
205 events->eventr = (events->eventr + 1) % MAX_EVENT;
206
03b76123 207 mutex_unlock(&events->mtx);
1da177e4
LT		 208
209 return 0;
210}
211
212static void dvb_frontend_init(struct dvb_frontend *fe)
213{
214 dprintk ("DVB: initialising frontend %i (%s)...\n",
215 fe->dvb->num,
dea74869
PB		 216 fe->ops.info.name);
217
218 if (fe->ops.init)
219 fe->ops.init(fe);
220 if (fe->ops.tuner_ops.init) {
221 fe->ops.tuner_ops.init(fe);
222 if (fe->ops.i2c_gate_ctrl)
223 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 224 }
1da177e4
LT		 225}
226
86f40cc3
AQ		 227void dvb_frontend_reinitialise(struct dvb_frontend *fe)
228{
229 struct dvb_frontend_private *fepriv = fe->frontend_priv;
230
231 fepriv->reinitialise = 1;
232 dvb_frontend_wakeup(fe);
233}
234EXPORT_SYMBOL(dvb_frontend_reinitialise);
235
36cb557a 236static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 237{
36cb557a 238 int q2;
1da177e4 239
46b4f7c1 240 dprintk ("%s\n", __func__);
1da177e4 241
36cb557a
AQ		 242 if (locked)
243 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
244 else
245 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 246
36cb557a
AQ		 247 q2 = fepriv->quality - 128;
248 q2 *= q2;
1da177e4 249
36cb557a 250 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 251}
252
253/**
254 * Performs automatic twiddling of frontend parameters.
255 *
256 * @param fe The frontend concerned.
257 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
258 * @returns Number of complete iterations that have been performed.
259 */
36cb557a 260static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 261{
262 int autoinversion;
263 int ready = 0;
0c53c70f 264 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 265 int original_inversion = fepriv->parameters.inversion;
266 u32 original_frequency = fepriv->parameters.frequency;
267
268 /* are we using autoinversion? */
dea74869 269 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
1da177e4
LT		 270 (fepriv->parameters.inversion == INVERSION_AUTO));
271
272 /* setup parameters correctly */
273 while(!ready) {
274 /* calculate the lnb_drift */
275 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
276
277 /* wrap the auto_step if we've exceeded the maximum drift */
278 if (fepriv->lnb_drift > fepriv->max_drift) {
279 fepriv->auto_step = 0;
280 fepriv->auto_sub_step = 0;
281 fepriv->lnb_drift = 0;
282 }
283
284 /* perform inversion and +/- zigzag */
285 switch(fepriv->auto_sub_step) {
286 case 0:
287 /* try with the current inversion and current drift setting */
288 ready = 1;
289 break;
290
291 case 1:
292 if (!autoinversion) break;
293
294 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
295 ready = 1;
296 break;
297
298 case 2:
299 if (fepriv->lnb_drift == 0) break;
300
301 fepriv->lnb_drift = -fepriv->lnb_drift;
302 ready = 1;
303 break;
304
305 case 3:
306 if (fepriv->lnb_drift == 0) break;
307 if (!autoinversion) break;
308
309 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
310 fepriv->lnb_drift = -fepriv->lnb_drift;
311 ready = 1;
312 break;
313
314 default:
315 fepriv->auto_step++;
316 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
317 break;
318 }
319
320 if (!ready) fepriv->auto_sub_step++;
321 }
322
323 /* if this attempt would hit where we started, indicate a complete
324 * iteration has occurred */
325 if ((fepriv->auto_step == fepriv->started_auto_step) &&
326 (fepriv->auto_sub_step == 0) && check_wrapped) {
327 return 1;
328 }
329
330 dprintk("%s: drift:%i inversion:%i auto_step:%i "
331 "auto_sub_step:%i started_auto_step:%i\n",
46b4f7c1 332 __func__, fepriv->lnb_drift, fepriv->inversion,
1da177e4
LT		 333 fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
334
335 /* set the frontend itself */
336 fepriv->parameters.frequency += fepriv->lnb_drift;
337 if (autoinversion)
338 fepriv->parameters.inversion = fepriv->inversion;
dea74869
PB		 339 if (fe->ops.set_frontend)
340 fe->ops.set_frontend(fe, &fepriv->parameters);
1da177e4
LT		 341
342 fepriv->parameters.frequency = original_frequency;
343 fepriv->parameters.inversion = original_inversion;
344
345 fepriv->auto_sub_step++;
346 return 0;
347}
348
36cb557a
AQ		 349static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
350{
30d9464c 351 fe_status_t s = 0;
36cb557a
AQ		 352 struct dvb_frontend_private *fepriv = fe->frontend_priv;
353
354 /* if we've got no parameters, just keep idling */
355 if (fepriv->state & FESTATE_IDLE) {
356 fepriv->delay = 3*HZ;
357 fepriv->quality = 0;
358 return;
359 }
360
361 /* in SCAN mode, we just set the frontend when asked and leave it alone */
362 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
363 if (fepriv->state & FESTATE_RETUNE) {
dea74869
PB		 364 if (fe->ops.set_frontend)
365 fe->ops.set_frontend(fe, &fepriv->parameters);
36cb557a
AQ		 366 fepriv->state = FESTATE_TUNED;
367 }
368 fepriv->delay = 3*HZ;
369 fepriv->quality = 0;
370 return;
371 }
372
373 /* get the frontend status */
374 if (fepriv->state & FESTATE_RETUNE) {
375 s = 0;
376 } else {
dea74869
PB		 377 if (fe->ops.read_status)
378 fe->ops.read_status(fe, &s);
36cb557a
AQ		 379 if (s != fepriv->status) {
380 dvb_frontend_add_event(fe, s);
381 fepriv->status = s;
382 }
383 }
384
385 /* if we're not tuned, and we have a lock, move to the TUNED state */
386 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
387 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
388 fepriv->state = FESTATE_TUNED;
389
390 /* if we're tuned, then we have determined the correct inversion */
dea74869 391 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
36cb557a
AQ		 392 (fepriv->parameters.inversion == INVERSION_AUTO)) {
393 fepriv->parameters.inversion = fepriv->inversion;
394 }
395 return;
396 }
397
398 /* if we are tuned already, check we're still locked */
399 if (fepriv->state & FESTATE_TUNED) {
400 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
401
402 /* we're tuned, and the lock is still good... */
403 if (s & FE_HAS_LOCK) {
404 return;
405 } else { /* if we _WERE_ tuned, but now don't have a lock */
406 fepriv->state = FESTATE_ZIGZAG_FAST;
407 fepriv->started_auto_step = fepriv->auto_step;
408 fepriv->check_wrapped = 0;
409 }
410 }
411
412 /* don't actually do anything if we're in the LOSTLOCK state,
413 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
414 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 415 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 416 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
417 return;
418 }
419
420 /* don't do anything if we're in the DISEQC state, since this
421 * might be someone with a motorized dish controlled by DISEQC.
422 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
423 if (fepriv->state & FESTATE_DISEQC) {
424 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
425 return;
426 }
427
428 /* if we're in the RETUNE state, set everything up for a brand
429 * new scan, keeping the current inversion setting, as the next
430 * tune is _very_ likely to require the same */
431 if (fepriv->state & FESTATE_RETUNE) {
432 fepriv->lnb_drift = 0;
433 fepriv->auto_step = 0;
434 fepriv->auto_sub_step = 0;
435 fepriv->started_auto_step = 0;
436 fepriv->check_wrapped = 0;
437 }
438
439 /* fast zigzag. */
440 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
441 fepriv->delay = fepriv->min_delay;
442
443 /* peform a tune */
444 if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) {
445 /* OK, if we've run out of trials at the fast speed.
446 * Drop back to slow for the _next_ attempt */
447 fepriv->state = FESTATE_SEARCHING_SLOW;
448 fepriv->started_auto_step = fepriv->auto_step;
449 return;
450 }
451 fepriv->check_wrapped = 1;
452
453 /* if we've just retuned, enter the ZIGZAG_FAST state.
454 * This ensures we cannot return from an
455 * FE_SET_FRONTEND ioctl before the first frontend tune
456 * occurs */
457 if (fepriv->state & FESTATE_RETUNE) {
458 fepriv->state = FESTATE_TUNING_FAST;
459 }
460 }
461
462 /* slow zigzag */
463 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
464 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
465
466 /* Note: don't bother checking for wrapping; we stay in this
467 * state until we get a lock */
468 dvb_frontend_swzigzag_autotune(fe, 0);
469 }
470}
471
1da177e4
LT		 472static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
473{
0c53c70f 474 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 475
476 if (fepriv->exit)
477 return 1;
478
479 if (fepriv->dvbdev->writers == 1)
cc89c229 480 if (time_after(jiffies, fepriv->release_jiffies +
36cb557a 481 dvb_shutdown_timeout * HZ))
1da177e4
LT		 482 return 1;
483
484 return 0;
485}
486
487static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
488{
0c53c70f 489 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 490
491 if (fepriv->wakeup) {
492 fepriv->wakeup = 0;
493 return 1;
494 }
495 return dvb_frontend_is_exiting(fe);
496}
497
498static void dvb_frontend_wakeup(struct dvb_frontend *fe)
499{
0c53c70f 500 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 501
502 fepriv->wakeup = 1;
503 wake_up_interruptible(&fepriv->wait_queue);
504}
505
1da177e4
LT		 506static int dvb_frontend_thread(void *data)
507{
0c53c70f
JS		 508 struct dvb_frontend *fe = data;
509 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 510 unsigned long timeout;
1da177e4 511 fe_status_t s;
36cb557a 512 struct dvb_frontend_parameters *params;
1da177e4 513
46b4f7c1 514 dprintk("%s\n", __func__);
1da177e4 515
36cb557a
AQ		 516 fepriv->check_wrapped = 0;
517 fepriv->quality = 0;
518 fepriv->delay = 3*HZ;
1da177e4 519 fepriv->status = 0;
1da177e4 520 fepriv->wakeup = 0;
04c56d0e
AQ		 521 fepriv->reinitialise = 0;
522
523 dvb_frontend_init(fe);
1da177e4 524
83144186 525 set_freezable();
1da177e4
LT		 526 while (1) {
527 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 528restart:
1da177e4 529 timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 530 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
531 || freezing(current),
8eec1429
HP		 532 fepriv->delay);
533
534 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4
LT		 535 /* got signal or quitting */
536 break;
537 }
538
8eec1429 539 if (try_to_freeze())
6591691b 540 goto restart;
1da177e4
LT		 541
542 if (down_interruptible(&fepriv->sem))
543 break;
544
86f40cc3
AQ		 545 if (fepriv->reinitialise) {
546 dvb_frontend_init(fe);
64454016 547 if (fepriv->tone != -1) {
dea74869 548 fe->ops.set_tone(fe, fepriv->tone);
64454016
AQ		 549 }
550 if (fepriv->voltage != -1) {
dea74869 551 fe->ops.set_voltage(fe, fepriv->voltage);
64454016 552 }
86f40cc3
AQ		 553 fepriv->reinitialise = 0;
554 }
555
36cb557a 556 /* do an iteration of the tuning loop */
d772bd03
MA		 557 if (fe->ops.get_frontend_algo) {
558 if (fe->ops.get_frontend_algo(fe) == FE_ALGO_HW) {
559 /* have we been asked to retune? */
560 params = NULL;
561 if (fepriv->state & FESTATE_RETUNE) {
562 params = &fepriv->parameters;
563 fepriv->state = FESTATE_TUNED;
564 }
565
566 fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
567 if (s != fepriv->status) {
568 dvb_frontend_add_event(fe, s);
569 fepriv->status = s;
570 }
70d90635
MA		 571 } else
572 dvb_frontend_swzigzag(fe);
4a4edcca
MA		 573 } else
574 dvb_frontend_swzigzag(fe);
1da177e4
LT		 575 }
576
608f62d6
OE		 577 if (dvb_powerdown_on_sleep) {
578 if (fe->ops.set_voltage)
579 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869
PB		 580 if (fe->ops.tuner_ops.sleep) {
581 fe->ops.tuner_ops.sleep(fe);
582 if (fe->ops.i2c_gate_ctrl)
583 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 584 }
dea74869
PB		 585 if (fe->ops.sleep)
586 fe->ops.sleep(fe);
1da177e4
LT		 587 }
588
8eec1429 589 fepriv->thread = NULL;
1da177e4
LT		 590 mb();
591
592 dvb_frontend_wakeup(fe);
593 return 0;
594}
595
596static void dvb_frontend_stop(struct dvb_frontend *fe)
597{
0c53c70f 598 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 599
46b4f7c1 600 dprintk ("%s\n", __func__);
1da177e4
LT		 601
602 fepriv->exit = 1;
603 mb();
604
8eec1429 605 if (!fepriv->thread)
1da177e4
LT		 606 return;
607
8eec1429 608 kthread_stop(fepriv->thread);
ca5be9cd 609
8eec1429 610 init_MUTEX (&fepriv->sem);
1da177e4
LT		 611 fepriv->state = FESTATE_IDLE;
612
613 /* paranoia check in case a signal arrived */
8eec1429
HP		 614 if (fepriv->thread)
615 printk("dvb_frontend_stop: warning: thread %p won't exit\n",
616 fepriv->thread);
1da177e4
LT		 617}
618
83b75b04
N		 619s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
620{
621 return ((curtime.tv_usec < lasttime.tv_usec) ?
622 1000000 - lasttime.tv_usec + curtime.tv_usec :
623 curtime.tv_usec - lasttime.tv_usec);
624}
625EXPORT_SYMBOL(timeval_usec_diff);
626
627static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
628{
629 curtime->tv_usec += add_usec;
630 if (curtime->tv_usec >= 1000000) {
631 curtime->tv_usec -= 1000000;
632 curtime->tv_sec++;
633 }
634}
635
636/*
637 * Sleep until gettimeofday() > waketime + add_usec
638 * This needs to be as precise as possible, but as the delay is
639 * usually between 2ms and 32ms, it is done using a scheduled msleep
640 * followed by usleep (normally a busy-wait loop) for the remainder
641 */
642void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
643{
644 struct timeval lasttime;
645 s32 delta, newdelta;
646
647 timeval_usec_add(waketime, add_usec);
648
649 do_gettimeofday(&lasttime);
650 delta = timeval_usec_diff(lasttime, *waketime);
651 if (delta > 2500) {
652 msleep((delta - 1500) / 1000);
653 do_gettimeofday(&lasttime);
654 newdelta = timeval_usec_diff(lasttime, *waketime);
655 delta = (newdelta > delta) ? 0 : newdelta;
656 }
657 if (delta > 0)
658 udelay(delta);
659}
660EXPORT_SYMBOL(dvb_frontend_sleep_until);
661
1da177e4
LT		 662static int dvb_frontend_start(struct dvb_frontend *fe)
663{
664 int ret;
0c53c70f 665 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 666 struct task_struct *fe_thread;
1da177e4 667
46b4f7c1 668 dprintk ("%s\n", __func__);
1da177e4 669
8eec1429 670 if (fepriv->thread) {
1da177e4
LT		 671 if (!fepriv->exit)
672 return 0;
673 else
674 dvb_frontend_stop (fe);
675 }
676
677 if (signal_pending(current))
678 return -EINTR;
679 if (down_interruptible (&fepriv->sem))
680 return -EINTR;
681
682 fepriv->state = FESTATE_IDLE;
683 fepriv->exit = 0;
8eec1429 684 fepriv->thread = NULL;
1da177e4
LT		 685 mb();
686
8eec1429
HP		 687 fe_thread = kthread_run(dvb_frontend_thread, fe,
688 "kdvb-fe-%i", fe->dvb->num);
689 if (IS_ERR(fe_thread)) {
690 ret = PTR_ERR(fe_thread);
691 printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
1da177e4
LT		 692 up(&fepriv->sem);
693 return ret;
694 }
8eec1429 695 fepriv->thread = fe_thread;
1da177e4
LT		 696 return 0;
697}
698
c471b331
OE		 699static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
700 u32 *freq_min, u32 *freq_max)
701{
702 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
703
704 if (fe->ops.info.frequency_max == 0)
705 *freq_max = fe->ops.tuner_ops.info.frequency_max;
706 else if (fe->ops.tuner_ops.info.frequency_max == 0)
707 *freq_max = fe->ops.info.frequency_max;
708 else
709 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
710
711 if (*freq_min == 0 || *freq_max == 0)
712 printk(KERN_WARNING "DVB: frontend %u frequency limits undefined - fix the driver\n",
713 fe->dvb->num);
714}
715
1fab46f0
OE		 716static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
717 struct dvb_frontend_parameters *parms)
718{
c471b331
OE		 719 u32 freq_min;
720 u32 freq_max;
721
1fab46f0 722 /* range check: frequency */
c471b331
OE		 723 dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
724 if ((freq_min && parms->frequency < freq_min) ||
725 (freq_max && parms->frequency > freq_max)) {
1fab46f0 726 printk(KERN_WARNING "DVB: frontend %u frequency %u out of range (%u..%u)\n",
c471b331 727 fe->dvb->num, parms->frequency, freq_min, freq_max);
1fab46f0
OE		 728 return -EINVAL;
729 }
730
731 /* range check: symbol rate */
732 if (fe->ops.info.type == FE_QPSK) {
733 if ((fe->ops.info.symbol_rate_min &&
734 parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
735 (fe->ops.info.symbol_rate_max &&
736 parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
737 printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
738 fe->dvb->num, parms->u.qpsk.symbol_rate,
739 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
740 return -EINVAL;
741 }
742
743 } else if (fe->ops.info.type == FE_QAM) {
744 if ((fe->ops.info.symbol_rate_min &&
745 parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
746 (fe->ops.info.symbol_rate_max &&
747 parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
748 printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
749 fe->dvb->num, parms->u.qam.symbol_rate,
750 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
751 return -EINVAL;
752 }
753 }
754
755 return 0;
756}
757
56f0680a 758struct dtv_cmds_h dtv_cmds[] = {
e7fee0f3
ST		 759 [DTV_TUNE] = {
760 .name = "DTV_TUNE",
761 .cmd = DTV_TUNE,
6b73eeaf
ST		 762 .set = 1,
763 },
e7fee0f3
ST		 764 [DTV_CLEAR] = {
765 .name = "DTV_CLEAR",
766 .cmd = DTV_CLEAR,
6b73eeaf
ST		 767 .set = 1,
768 },
769
770 /* Set */
363429a0
ST		 771 [DTV_FREQUENCY] = {
772 .name = "DTV_FREQUENCY",
773 .cmd = DTV_FREQUENCY,
6b73eeaf
ST		 774 .set = 1,
775 },
75b7f943
ST		 776 [DTV_BANDWIDTH_HZ] = {
777 .name = "DTV_BANDWIDTH_HZ",
778 .cmd = DTV_BANDWIDTH_HZ,
6b73eeaf
ST		 779 .set = 1,
780 },
363429a0
ST		 781 [DTV_MODULATION] = {
782 .name = "DTV_MODULATION",
783 .cmd = DTV_MODULATION,
6b73eeaf
ST		 784 .set = 1,
785 },
363429a0
ST		 786 [DTV_INVERSION] = {
787 .name = "DTV_INVERSION",
788 .cmd = DTV_INVERSION,
6b73eeaf
ST		 789 .set = 1,
790 },
363429a0
ST		 791 [DTV_DISEQC_MASTER] = {
792 .name = "DTV_DISEQC_MASTER",
793 .cmd = DTV_DISEQC_MASTER,
6b73eeaf
ST		 794 .set = 1,
795 .buffer = 1,
796 },
363429a0
ST		 797 [DTV_SYMBOL_RATE] = {
798 .name = "DTV_SYMBOL_RATE",
799 .cmd = DTV_SYMBOL_RATE,
6b73eeaf
ST		 800 .set = 1,
801 },
363429a0
ST		 802 [DTV_INNER_FEC] = {
803 .name = "DTV_INNER_FEC",
804 .cmd = DTV_INNER_FEC,
6b73eeaf
ST		 805 .set = 1,
806 },
363429a0
ST		 807 [DTV_VOLTAGE] = {
808 .name = "DTV_VOLTAGE",
809 .cmd = DTV_VOLTAGE,
6b73eeaf
ST		 810 .set = 1,
811 },
363429a0
ST		 812 [DTV_TONE] = {
813 .name = "DTV_TONE",
814 .cmd = DTV_TONE,
6b73eeaf
ST		 815 .set = 1,
816 },
363429a0
ST		 817 [DTV_PILOT] = {
818 .name = "DTV_PILOT",
819 .cmd = DTV_PILOT,
6b73eeaf
ST		 820 .set = 1,
821 },
363429a0
ST		 822 [DTV_ROLLOFF] = {
823 .name = "DTV_ROLLOFF",
824 .cmd = DTV_ROLLOFF,
6b73eeaf
ST		 825 .set = 1,
826 },
363429a0
ST		 827 [DTV_DELIVERY_SYSTEM] = {
828 .name = "DTV_DELIVERY_SYSTEM",
829 .cmd = DTV_DELIVERY_SYSTEM,
6b73eeaf
ST		 830 .set = 1,
831 },
6b73eeaf 832 /* Get */
363429a0
ST		 833 [DTV_DISEQC_SLAVE_REPLY] = {
834 .name = "DTV_DISEQC_SLAVE_REPLY",
835 .cmd = DTV_DISEQC_SLAVE_REPLY,
6b73eeaf
ST		 836 .set = 0,
837 .buffer = 1,
838 },
6b73eeaf
ST		 839};
840
e7fee0f3 841void dtv_property_dump(struct dtv_property *tvp)
6b73eeaf
ST		 842{
843 int i;
844
845 printk("%s() tvp.cmd = 0x%08x (%s)\n"
846 ,__FUNCTION__
847 ,tvp->cmd
56f0680a 848 ,dtv_cmds[ tvp->cmd ].name);
6b73eeaf 849
56f0680a 850 if(dtv_cmds[ tvp->cmd ].buffer) {
6b73eeaf
ST		 851
852 printk("%s() tvp.u.buffer.len = 0x%02x\n"
853 ,__FUNCTION__
854 ,tvp->u.buffer.len);
855
856 for(i = 0; i < tvp->u.buffer.len; i++)
857 printk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
858 ,__FUNCTION__
859 ,i
860 ,tvp->u.buffer.data[i]);
861
862 } else
863 printk("%s() tvp.u.data = 0x%08x\n", __FUNCTION__, tvp->u.data);
864}
865
866int is_legacy_delivery_system(fe_delivery_system_t s)
867{
868 if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
869 (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS))
870 return 1;
871
872 return 0;
873}
874
ee33c525
ST		 875/* Synchronise the legacy tuning parameters into the cache, so that demodulator
876 * drivers can use a single set_frontend tuning function, regardless of whether
877 * it's being used for the legacy or new API, reducing code and complexity.
878 */
879void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
880{
881 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
882
d5748f10
ST		 883 printk("%s()\n", __FUNCTION__);
884
ee33c525
ST		 885 c->frequency = p->frequency;
886 c->inversion = p->inversion;
887
888 switch (fe->ops.info.type) {
889 case FE_QPSK:
890 c->symbol_rate = p->u.qpsk.symbol_rate;
891 c->fec_inner = p->u.qpsk.fec_inner;
80a773c9 892 c->delivery_system = SYS_DVBS;
ee33c525
ST		 893 break;
894 case FE_QAM:
895 c->symbol_rate = p->u.qam.symbol_rate;
896 c->fec_inner = p->u.qam.fec_inner;
897 c->modulation = p->u.qam.modulation;
80a773c9 898 c->delivery_system = SYS_DVBC_ANNEX_AC;
ee33c525
ST		 899 break;
900 case FE_OFDM:
75b7f943
ST		 901 if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
902 c->bandwidth_hz = 6000000;
903 else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
904 c->bandwidth_hz = 7000000;
905 else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
906 c->bandwidth_hz = 8000000;
907 else
908 /* Including BANDWIDTH_AUTO */
909 c->bandwidth_hz = 0;
ee33c525
ST		 910 c->code_rate_HP = p->u.ofdm.code_rate_HP;
911 c->code_rate_LP = p->u.ofdm.code_rate_LP;
912 c->modulation = p->u.ofdm.constellation;
913 c->transmission_mode = p->u.ofdm.transmission_mode;
914 c->guard_interval = p->u.ofdm.guard_interval;
915 c->hierarchy = p->u.ofdm.hierarchy_information;
80a773c9 916 c->delivery_system = SYS_DVBT;
ee33c525
ST		 917 break;
918 case FE_ATSC:
919 c->modulation = p->u.vsb.modulation;
80a773c9
ST		 920 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
921 c->delivery_system = SYS_ATSC;
922 else
923 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525
ST		 924 break;
925 }
926}
927
d5748f10
ST		 928/* Ensure the cached values are set correctly in the frontend
929 * legacy tuning structures, for the advanced tuning API.
930 */
931void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
6b73eeaf 932{
d5748f10
ST		 933 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
934 struct dvb_frontend_private *fepriv = fe->frontend_priv;
935 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 936
d5748f10 937 printk("%s()\n", __FUNCTION__);
6b73eeaf 938
d5748f10
ST		 939 p->frequency = c->frequency;
940 p->inversion = c->inversion;
6b73eeaf 941
d5748f10
ST		 942 switch (fe->ops.info.type) {
943 case FE_QPSK:
944 printk("%s() Preparing QPSK req\n", __FUNCTION__);
945 p->u.qpsk.symbol_rate = c->symbol_rate;
946 p->u.qpsk.fec_inner = c->fec_inner;
80a773c9 947 c->delivery_system = SYS_DVBS;
d5748f10
ST		 948 break;
949 case FE_QAM:
950 printk("%s() Preparing QAM req\n", __FUNCTION__);
951 p->u.qam.symbol_rate = c->symbol_rate;
952 p->u.qam.fec_inner = c->fec_inner;
953 p->u.qam.modulation = c->modulation;
80a773c9 954 c->delivery_system = SYS_DVBC_ANNEX_AC;
d5748f10
ST		 955 break;
956 case FE_OFDM:
957 printk("%s() Preparing OFDM req\n", __FUNCTION__);
75b7f943
ST		 958 if (c->bandwidth_hz == 6000000)
959 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
960 else if (c->bandwidth_hz == 7000000)
961 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
962 else if (c->bandwidth_hz == 8000000)
963 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
964 else
965 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 966 p->u.ofdm.code_rate_HP = c->code_rate_HP;
967 p->u.ofdm.code_rate_LP = c->code_rate_LP;
968 p->u.ofdm.constellation = c->modulation;
969 p->u.ofdm.transmission_mode = c->transmission_mode;
970 p->u.ofdm.guard_interval = c->guard_interval;
971 p->u.ofdm.hierarchy_information = c->hierarchy;
80a773c9 972 c->delivery_system = SYS_DVBT;
d5748f10
ST		 973 break;
974 case FE_ATSC:
975 printk("%s() Preparing VSB req\n", __FUNCTION__);
976 p->u.vsb.modulation = c->modulation;
80a773c9
ST		 977 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
978 c->delivery_system = SYS_ATSC;
979 else
980 c->delivery_system = SYS_DVBC_ANNEX_B;
d5748f10
ST		 981 break;
982 }
983}
984
985/* Ensure the cached values are set correctly in the frontend
986 * legacy tuning structures, for the legacy tuning API.
987 */
988void dtv_property_adv_params_sync(struct dvb_frontend *fe)
989{
56f0680a 990 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 991 struct dvb_frontend_private *fepriv = fe->frontend_priv;
d5748f10 992 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf
ST		 993
994 printk("%s()\n", __FUNCTION__);
995
d5748f10
ST		 996 p->frequency = c->frequency;
997 p->inversion = c->inversion;
998
999 switch(c->modulation) {
1000 case _8PSK:
1001 case _16APSK:
1002 case NBC_QPSK:
1003 p->u.qpsk.symbol_rate = c->symbol_rate;
1004 p->u.qpsk.fec_inner = c->fec_inner;
1005 break;
1006 default:
1007 break;
1008 }
1009
1010 if(c->delivery_system == SYS_ISDBT) {
1011 /* Fake out a generic DVB-T request so we pass validation in the ioctl */
1012 p->frequency = c->frequency;
1013 p->inversion = INVERSION_AUTO;
1014 p->u.ofdm.constellation = QAM_AUTO;
1015 p->u.ofdm.code_rate_HP = FEC_AUTO;
1016 p->u.ofdm.code_rate_LP = FEC_AUTO;
1017 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
1018 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
1019 p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
1020 p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
1021 }
1022}
1023
1024void dtv_property_cache_submit(struct dvb_frontend *fe)
1025{
1026 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1027
1028 printk("%s()\n", __FUNCTION__);
1029
1030 /* For legacy delivery systems we don't need the delivery_system to
1031 * be specified, but we populate the older structures from the cache
1032 * so we can call set_frontend on older drivers.
1033 */
6b73eeaf 1034 if(is_legacy_delivery_system(c->delivery_system)) {
6b73eeaf 1035
d5748f10
ST		 1036 printk("%s() legacy, modulation = %d\n", __FUNCTION__, c->modulation);
1037 dtv_property_legacy_params_sync(fe);
6b73eeaf 1038
6b73eeaf 1039 } else {
d5748f10
ST		 1040 printk("%s() adv, modulation = %d\n", __FUNCTION__, c->modulation);
1041
6b73eeaf
ST		 1042 /* For advanced delivery systems / modulation types ...
1043 * we seed the lecacy dvb_frontend_parameters structure
1044 * so that the sanity checking code later in the IOCTL processing
1045 * can validate our basic frequency ranges, symbolrates, modulation
1046 * etc.
1047 */
d5748f10 1048 dtv_property_adv_params_sync(fe);
6b73eeaf 1049 }
6b73eeaf
ST		 1050}
1051
13c97bf5
ST		 1052static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1053 unsigned int cmd, void *parg);
1054static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1055 unsigned int cmd, void *parg);
1056
363429a0
ST		 1057int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp,
1058 struct inode *inode, struct file *file)
1059{
1060 int r = 0;
1061
1062 printk("%s()\n", __FUNCTION__);
1063
1064 dtv_property_dump(tvp);
1065
bfbf2dae
ST		 1066 /* Allow the frontend to validate incoming properties */
1067 if (fe->ops.get_property)
1068 r = fe->ops.get_property(fe, tvp);
1069
1070 if (r < 0)
1071 return r;
1072
363429a0
ST		 1073 switch(tvp->cmd) {
1074 case DTV_FREQUENCY:
1075 tvp->u.data = fe->dtv_property_cache.frequency;
1076 break;
1077 case DTV_MODULATION:
1078 tvp->u.data = fe->dtv_property_cache.modulation;
1079 break;
75b7f943
ST		 1080 case DTV_BANDWIDTH_HZ:
1081 tvp->u.data = fe->dtv_property_cache.bandwidth_hz;
363429a0
ST		 1082 break;
1083 case DTV_INVERSION:
1084 tvp->u.data = fe->dtv_property_cache.inversion;
1085 break;
1086 case DTV_SYMBOL_RATE:
1087 tvp->u.data = fe->dtv_property_cache.symbol_rate;
1088 break;
1089 case DTV_INNER_FEC:
1090 tvp->u.data = fe->dtv_property_cache.fec_inner;
1091 break;
1092 case DTV_PILOT:
1093 tvp->u.data = fe->dtv_property_cache.pilot;
1094 break;
1095 case DTV_ROLLOFF:
1096 tvp->u.data = fe->dtv_property_cache.rolloff;
1097 break;
1098 case DTV_DELIVERY_SYSTEM:
1099 tvp->u.data = fe->dtv_property_cache.delivery_system;
1100 break;
363429a0
ST		 1101 case DTV_VOLTAGE:
1102 tvp->u.data = fe->dtv_property_cache.voltage;
1103 break;
1104 case DTV_TONE:
1105 tvp->u.data = fe->dtv_property_cache.sectone;
1106 break;
1107 default:
1108 r = -1;
1109 }
1110
1111 return r;
1112}
1113
1114int dtv_property_process_set(struct dvb_frontend *fe, struct dtv_property *tvp,
13c97bf5 1115 struct inode *inode, struct file *file)
6b73eeaf
ST		 1116{
1117 int r = 0;
13c97bf5 1118 struct dvb_frontend_private *fepriv = fe->frontend_priv;
6b73eeaf 1119 printk("%s()\n", __FUNCTION__);
56f0680a 1120 dtv_property_dump(tvp);
6b73eeaf 1121
bfbf2dae
ST		 1122 /* Allow the frontend to validate incoming properties */
1123 if (fe->ops.set_property)
1124 r = fe->ops.set_property(fe, tvp);
1125
1126 if (r < 0)
1127 return r;
1128
6b73eeaf 1129 switch(tvp->cmd) {
e7fee0f3 1130 case DTV_CLEAR:
6b73eeaf
ST		 1131 /* Reset a cache of data specific to the frontend here. This does
1132 * not effect hardware.
1133 */
1134 printk("%s() Flushing property cache\n", __FUNCTION__);
56f0680a 1135 memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties));
e7fee0f3 1136 fe->dtv_property_cache.state = tvp->cmd;
56f0680a 1137 fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;
6b73eeaf 1138 break;
e7fee0f3 1139 case DTV_TUNE:
6b73eeaf 1140 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1141 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1142 * ioctl.
6b73eeaf 1143 */
e7fee0f3 1144 fe->dtv_property_cache.state = tvp->cmd;
6b73eeaf 1145 printk("%s() Finalised property cache\n", __FUNCTION__);
d5748f10
ST		 1146 dtv_property_cache_submit(fe);
1147
13c97bf5
ST		 1148 r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
1149 &fepriv->parameters);
6b73eeaf 1150 break;
363429a0 1151 case DTV_FREQUENCY:
56f0680a 1152 fe->dtv_property_cache.frequency = tvp->u.data;
6b73eeaf 1153 break;
363429a0 1154 case DTV_MODULATION:
56f0680a 1155 fe->dtv_property_cache.modulation = tvp->u.data;
6b73eeaf 1156 break;
75b7f943
ST		 1157 case DTV_BANDWIDTH_HZ:
1158 fe->dtv_property_cache.bandwidth_hz = tvp->u.data;
6b73eeaf 1159 break;
363429a0 1160 case DTV_INVERSION:
56f0680a 1161 fe->dtv_property_cache.inversion = tvp->u.data;
6b73eeaf 1162 break;
363429a0 1163 case DTV_SYMBOL_RATE:
56f0680a 1164 fe->dtv_property_cache.symbol_rate = tvp->u.data;
6b73eeaf 1165 break;
363429a0 1166 case DTV_INNER_FEC:
56f0680a 1167 fe->dtv_property_cache.fec_inner = tvp->u.data;
6b73eeaf 1168 break;
363429a0 1169 case DTV_PILOT:
56f0680a 1170 fe->dtv_property_cache.pilot = tvp->u.data;
6b73eeaf 1171 break;
363429a0 1172 case DTV_ROLLOFF:
56f0680a 1173 fe->dtv_property_cache.rolloff = tvp->u.data;
6b73eeaf 1174 break;
363429a0 1175 case DTV_DELIVERY_SYSTEM:
56f0680a 1176 fe->dtv_property_cache.delivery_system = tvp->u.data;
6b73eeaf 1177 break;
363429a0 1178 case DTV_VOLTAGE:
56f0680a 1179 fe->dtv_property_cache.voltage = tvp->u.data;
13c97bf5 1180 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE,
56f0680a 1181 (void *)fe->dtv_property_cache.voltage);
13c97bf5 1182 break;
363429a0 1183 case DTV_TONE:
56f0680a 1184 fe->dtv_property_cache.sectone = tvp->u.data;
13c97bf5 1185 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE,
56f0680a 1186 (void *)fe->dtv_property_cache.sectone);
13c97bf5 1187 break;
363429a0
ST		 1188 default:
1189 r = -1;
6b73eeaf
ST		 1190 }
1191
13c97bf5 1192 return r;
6b73eeaf
ST		 1193}
1194
1da177e4
LT		 1195static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
1196 unsigned int cmd, void *parg)
1197{
1198 struct dvb_device *dvbdev = file->private_data;
1199 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1200 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1201 int err = -EOPNOTSUPP;
1202
46b4f7c1 1203 dprintk ("%s\n", __func__);
1da177e4 1204
813ce47c 1205 if (fepriv->exit)
1da177e4
LT		 1206 return -ENODEV;
1207
1208 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1209 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1210 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1211 return -EPERM;
1212
1213 if (down_interruptible (&fepriv->sem))
1214 return -ERESTARTSYS;
1215
13c97bf5
ST		 1216 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
1217 err = dvb_frontend_ioctl_properties(inode, file, cmd, parg);
4dd88bec
ST		 1218 else {
1219 fe->dtv_property_cache.state = DTV_UNDEFINED;
13c97bf5 1220 err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg);
4dd88bec 1221 }
13c97bf5
ST		 1222
1223 up(&fepriv->sem);
1224 return err;
1225}
1226
1227static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1228 unsigned int cmd, void *parg)
1229{
1230 struct dvb_device *dvbdev = file->private_data;
1231 struct dvb_frontend *fe = dvbdev->priv;
e6f9ec86 1232 int err = 0;
e7fee0f3
ST		 1233
1234 struct dtv_properties *tvps = NULL;
1235 struct dtv_property *tvp = NULL;
1236 int i;
13c97bf5
ST		 1237
1238 dprintk("%s\n", __func__);
1239
6b73eeaf
ST		 1240 if(cmd == FE_SET_PROPERTY) {
1241 printk("%s() FE_SET_PROPERTY\n", __FUNCTION__);
1242
e7fee0f3 1243 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1244
e7fee0f3
ST		 1245 printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num);
1246 printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props);
1247
1248 /* Put an arbitrary limit on the number of messages that can
1249 * be sent at once */
1250 if (tvps->num > DTV_IOCTL_MAX_MSGS)
1251 return -EINVAL;
1252
1253 tvp = (struct dtv_property *) kmalloc(tvps->num *
1254 sizeof(struct dtv_property), GFP_KERNEL);
1255 if (!tvp) {
1256 err = -ENOMEM;
1257 goto out;
6b73eeaf
ST		 1258 }
1259
e7fee0f3
ST		 1260 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1261 err = -EFAULT;
1262 goto out;
1263 }
1264
1265 for (i = 0; i < tvps->num; i++)
bfbf2dae 1266 err |= dtv_property_process_set(fe, tvp + i, inode, file);
e7fee0f3
ST		 1267
1268 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf 1269 printk("%s() Property cache is full, tuning\n", __FUNCTION__);
6b73eeaf 1270 }
bfbf2dae 1271
363429a0
ST		 1272 } else
1273 if(cmd == FE_GET_PROPERTY) {
1274 printk("%s() FE_GET_PROPERTY\n", __FUNCTION__);
1275
1276 tvps = (struct dtv_properties __user *)parg;
1277
1278 printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num);
1279 printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props);
1280
1281 /* Put an arbitrary limit on the number of messages that can
1282 * be sent at once */
1283 if (tvps->num > DTV_IOCTL_MAX_MSGS)
1284 return -EINVAL;
1285
1286 tvp = (struct dtv_property *) kmalloc(tvps->num *
1287 sizeof(struct dtv_property), GFP_KERNEL);
1288 if (!tvp) {
1289 err = -ENOMEM;
1290 goto out;
1291 }
1292
1293 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1294 err = -EFAULT;
1295 goto out;
1296 }
1297
1298 for (i = 0; i < tvps->num; i++)
bfbf2dae 1299 err |= dtv_property_process_get(fe, tvp + i, inode, file);
363429a0
ST		 1300
1301 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1302 err = -EFAULT;
1303 goto out;
1304 }
1305
363429a0
ST		 1306 } else
1307 err = -EOPNOTSUPP;
1308
e7fee0f3
ST		 1309out:
1310 kfree(tvp);
13c97bf5
ST		 1311 return err;
1312}
1313
1314static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1315 unsigned int cmd, void *parg)
1316{
1317 struct dvb_device *dvbdev = file->private_data;
1318 struct dvb_frontend *fe = dvbdev->priv;
1319 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1320 int err = -EOPNOTSUPP;
1321
1da177e4
LT		 1322 switch (cmd) {
1323 case FE_GET_INFO: {
0c53c70f 1324 struct dvb_frontend_info* info = parg;
dea74869 1325 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
c471b331 1326 dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4
LT		 1327
1328 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
1329 * do it, it is done for it. */
1330 info->caps |= FE_CAN_INVERSION_AUTO;
1331 err = 0;
1332 break;
1333 }
1334
6757ccc5
PB		 1335 case FE_READ_STATUS: {
1336 fe_status_t* status = parg;
1337
1338 /* if retune was requested but hasn't occured yet, prevent
1339 * that user get signal state from previous tuning */
1340 if(fepriv->state == FESTATE_RETUNE) {
1341 err=0;
1342 *status = 0;
1343 break;
1344 }
1345
dea74869
PB		 1346 if (fe->ops.read_status)
1347 err = fe->ops.read_status(fe, status);
1da177e4 1348 break;
6757ccc5 1349 }
1da177e4 1350 case FE_READ_BER:
dea74869
PB		 1351 if (fe->ops.read_ber)
1352 err = fe->ops.read_ber(fe, (__u32*) parg);
1da177e4
LT		 1353 break;
1354
1355 case FE_READ_SIGNAL_STRENGTH:
dea74869
PB		 1356 if (fe->ops.read_signal_strength)
1357 err = fe->ops.read_signal_strength(fe, (__u16*) parg);
1da177e4
LT		 1358 break;
1359
1360 case FE_READ_SNR:
dea74869
PB		 1361 if (fe->ops.read_snr)
1362 err = fe->ops.read_snr(fe, (__u16*) parg);
1da177e4
LT		 1363 break;
1364
1365 case FE_READ_UNCORRECTED_BLOCKS:
dea74869
PB		 1366 if (fe->ops.read_ucblocks)
1367 err = fe->ops.read_ucblocks(fe, (__u32*) parg);
1da177e4
LT		 1368 break;
1369
1370
1371 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 1372 if (fe->ops.diseqc_reset_overload) {
1373 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 1374 fepriv->state = FESTATE_DISEQC;
1375 fepriv->status = 0;
1376 }
1377 break;
1378
1379 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 1380 if (fe->ops.diseqc_send_master_cmd) {
1381 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 1382 fepriv->state = FESTATE_DISEQC;
1383 fepriv->status = 0;
1384 }
1385 break;
1386
1387 case FE_DISEQC_SEND_BURST:
dea74869
PB		 1388 if (fe->ops.diseqc_send_burst) {
1389 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 1390 fepriv->state = FESTATE_DISEQC;
1391 fepriv->status = 0;
1392 }
1393 break;
1394
1395 case FE_SET_TONE:
dea74869
PB		 1396 if (fe->ops.set_tone) {
1397 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 1398 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 1399 fepriv->state = FESTATE_DISEQC;
1400 fepriv->status = 0;
1401 }
1402 break;
1403
1404 case FE_SET_VOLTAGE:
dea74869
PB		 1405 if (fe->ops.set_voltage) {
1406 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 1407 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 1408 fepriv->state = FESTATE_DISEQC;
1409 fepriv->status = 0;
1410 }
1411 break;
1412
1413 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 1414 if (fe->ops.dishnetwork_send_legacy_command) {
1415 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 1416 fepriv->state = FESTATE_DISEQC;
1417 fepriv->status = 0;
dea74869 1418 } else if (fe->ops.set_voltage) {
83b75b04
N		 1419 /*
1420 * NOTE: This is a fallback condition. Some frontends
1421 * (stv0299 for instance) take longer than 8msec to
1422 * respond to a set_voltage command. Those switches
1423 * need custom routines to switch properly. For all
1424 * other frontends, the following shoule work ok.
1425 * Dish network legacy switches (as used by Dish500)
1426 * are controlled by sending 9-bit command words
1427 * spaced 8msec apart.
1428 * the actual command word is switch/port dependant
1429 * so it is up to the userspace application to send
1430 * the right command.
1431 * The command must always start with a '0' after
1432 * initialization, so parg is 8 bits and does not
1433 * include the initialization or start bit
1434 */
c6eb8eaf 1435 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 1436 struct timeval nexttime;
1437 struct timeval tv[10];
1438 int i;
1439 u8 last = 1;
1440 if (dvb_frontend_debug)
c6eb8eaf 1441 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 1442 do_gettimeofday(&nexttime);
1443 if (dvb_frontend_debug)
1444 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
1445 /* before sending a command, initialize by sending
1446 * a 32ms 18V to the switch
1447 */
dea74869 1448 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 1449 dvb_frontend_sleep_until(&nexttime, 32000);
1450
1451 for (i = 0; i < 9; i++) {
1452 if (dvb_frontend_debug)
1453 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 1454 if ((swcmd & 0x01) != last) {
83b75b04 1455 /* set voltage to (last ? 13V : 18V) */
dea74869 1456 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 1457 last = (last) ? 0 : 1;
1458 }
c6eb8eaf 1459 swcmd = swcmd >> 1;
83b75b04
N		 1460 if (i != 8)
1461 dvb_frontend_sleep_until(&nexttime, 8000);
1462 }
1463 if (dvb_frontend_debug) {
1464 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 1465 __func__, fe->dvb->num);
83b75b04
N		 1466 for (i = 1; i < 10; i++)
1467 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
1468 }
1469 err = 0;
1470 fepriv->state = FESTATE_DISEQC;
1471 fepriv->status = 0;
1da177e4
LT		 1472 }
1473 break;
1474
1475 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 1476 if (fe->ops.diseqc_recv_slave_reply)
1477 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 1478 break;
1479
1480 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 1481 if (fe->ops.enable_high_lnb_voltage)
1482 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 1483 break;
1484
1485 case FE_SET_FRONTEND: {
1486 struct dvb_frontend_tune_settings fetunesettings;
1487
e7fee0f3 1488 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf
ST		 1489 if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) {
1490 err = -EINVAL;
1491 break;
1492 }
1493 } else {
1494 if (dvb_frontend_check_parameters(fe, parg) < 0) {
1495 err = -EINVAL;
1496 break;
1497 }
1fab46f0 1498
6b73eeaf
ST		 1499 memcpy (&fepriv->parameters, parg,
1500 sizeof (struct dvb_frontend_parameters));
1d78cac4 1501 dtv_property_cache_sync(fe, &fepriv->parameters);
6b73eeaf 1502 }
1da177e4
LT		 1503
1504 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
1505 memcpy(&fetunesettings.parameters, parg,
1506 sizeof (struct dvb_frontend_parameters));
1507
1508 /* force auto frequency inversion if requested */
1509 if (dvb_force_auto_inversion) {
1510 fepriv->parameters.inversion = INVERSION_AUTO;
1511 fetunesettings.parameters.inversion = INVERSION_AUTO;
1512 }
dea74869 1513 if (fe->ops.info.type == FE_OFDM) {
1b3c3714 1514 /* without hierarchical coding code_rate_LP is irrelevant,
1da177e4
LT		 1515 * so we tolerate the otherwise invalid FEC_NONE setting */
1516 if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
1517 fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE)
1518 fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
1519 }
1520
1521 /* get frontend-specific tuning settings */
dea74869 1522 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
1da177e4
LT		 1523 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
1524 fepriv->max_drift = fetunesettings.max_drift;
1525 fepriv->step_size = fetunesettings.step_size;
1526 } else {
1527 /* default values */
dea74869 1528 switch(fe->ops.info.type) {
1da177e4
LT		 1529 case FE_QPSK:
1530 fepriv->min_delay = HZ/20;
1531 fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000;
1532 fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000;
1533 break;
1534
1535 case FE_QAM:
1536 fepriv->min_delay = HZ/20;
1537 fepriv->step_size = 0; /* no zigzag */
1538 fepriv->max_drift = 0;
1539 break;
1540
1541 case FE_OFDM:
1542 fepriv->min_delay = HZ/20;
dea74869
PB		 1543 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
1544 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
1da177e4
LT		 1545 break;
1546 case FE_ATSC:
4821fb1d
MA		 1547 fepriv->min_delay = HZ/20;
1548 fepriv->step_size = 0;
1549 fepriv->max_drift = 0;
1da177e4
LT		 1550 break;
1551 }
1552 }
1553 if (dvb_override_tune_delay > 0)
1554 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
1555
1556 fepriv->state = FESTATE_RETUNE;
1557 dvb_frontend_wakeup(fe);
1558 dvb_frontend_add_event(fe, 0);
1559 fepriv->status = 0;
1560 err = 0;
1561 break;
1562 }
1563
1564 case FE_GET_EVENT:
1565 err = dvb_frontend_get_event (fe, parg, file->f_flags);
1566 break;
1567
1568 case FE_GET_FRONTEND:
dea74869 1569 if (fe->ops.get_frontend) {
1da177e4 1570 memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters));
dea74869 1571 err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg);
1da177e4
LT		 1572 }
1573 break;
36cb557a
AQ		 1574
1575 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 1576 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 1577 err = 0;
36cb557a 1578 break;
1da177e4
LT		 1579 };
1580
1da177e4
LT		 1581 return err;
1582}
1583
6b73eeaf 1584
1da177e4
LT		 1585static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
1586{
1587 struct dvb_device *dvbdev = file->private_data;
1588 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1589 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 1590
46b4f7c1 1591 dprintk ("%s\n", __func__);
1da177e4
LT		 1592
1593 poll_wait (file, &fepriv->events.wait_queue, wait);
1594
1595 if (fepriv->events.eventw != fepriv->events.eventr)
1596 return (POLLIN | POLLRDNORM | POLLPRI);
1597
1598 return 0;
1599}
1600
1601static int dvb_frontend_open(struct inode *inode, struct file *file)
1602{
1603 struct dvb_device *dvbdev = file->private_data;
1604 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1605 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1606 int ret;
1607
46b4f7c1 1608 dprintk ("%s\n", __func__);
1da177e4 1609
48136e1e
OE		 1610 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
1611 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
ba7e6f3e 1612 return ret;
ba7e6f3e
ST		 1613 }
1614
48136e1e
OE		 1615 if ((ret = dvb_generic_open (inode, file)) < 0)
1616 goto err1;
04c56d0e 1617
48136e1e 1618 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 1619 /* normal tune mode when opened R/W */
1620 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
1621 fepriv->tone = -1;
1622 fepriv->voltage = -1;
1623
1da177e4
LT		 1624 ret = dvb_frontend_start (fe);
1625 if (ret)
48136e1e 1626 goto err2;
1da177e4
LT		 1627
1628 /* empty event queue */
1629 fepriv->events.eventr = fepriv->events.eventw = 0;
1630 }
1631
1632 return ret;
48136e1e
OE		 1633
1634err2:
1635 dvb_generic_release(inode, file);
1636err1:
1637 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
1638 fe->ops.ts_bus_ctrl(fe, 0);
1639 return ret;
1da177e4
LT		 1640}
1641
1642static int dvb_frontend_release(struct inode *inode, struct file *file)
1643{
1644 struct dvb_device *dvbdev = file->private_data;
1645 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1646 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 1647 int ret;
1da177e4 1648
46b4f7c1 1649 dprintk ("%s\n", __func__);
1da177e4
LT		 1650
1651 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
1652 fepriv->release_jiffies = jiffies;
1653
ca5be9cd
MR		 1654 ret = dvb_generic_release (inode, file);
1655
48136e1e
OE		 1656 if (dvbdev->users == -1) {
1657 if (fepriv->exit == 1) {
1658 fops_put(file->f_op);
1659 file->f_op = NULL;
1660 wake_up(&dvbdev->wait_queue);
1661 }
1662 if (fe->ops.ts_bus_ctrl)
1663 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 1664 }
48136e1e 1665
ca5be9cd 1666 return ret;
1da177e4
LT		 1667}
1668
1669static struct file_operations dvb_frontend_fops = {
1670 .owner = THIS_MODULE,
1671 .ioctl = dvb_generic_ioctl,
1672 .poll = dvb_frontend_poll,
1673 .open = dvb_frontend_open,
1674 .release = dvb_frontend_release
1675};
1676
1677int dvb_register_frontend(struct dvb_adapter* dvb,
1678 struct dvb_frontend* fe)
1679{
1680 struct dvb_frontend_private *fepriv;
1681 static const struct dvb_device dvbdev_template = {
1682 .users = ~0,
1683 .writers = 1,
1684 .readers = (~0)-1,
1685 .fops = &dvb_frontend_fops,
1686 .kernel_ioctl = dvb_frontend_ioctl
1687 };
1688
46b4f7c1 1689 dprintk ("%s\n", __func__);
1da177e4 1690
3593cab5 1691 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 1692 return -ERESTARTSYS;
1693
7408187d 1694 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 1695 if (fe->frontend_priv == NULL) {
3593cab5 1696 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1697 return -ENOMEM;
1698 }
0c53c70f 1699 fepriv = fe->frontend_priv;
1da177e4
LT		 1700
1701 init_MUTEX (&fepriv->sem);
1702 init_waitqueue_head (&fepriv->wait_queue);
1703 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 1704 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 1705 fe->dvb = dvb;
1706 fepriv->inversion = INVERSION_OFF;
1707
1708 printk ("DVB: registering frontend %i (%s)...\n",
1709 fe->dvb->num,
dea74869 1710 fe->ops.info.name);
1da177e4
LT		 1711
1712 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
1713 fe, DVB_DEVICE_FRONTEND);
1714
3593cab5 1715 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1716 return 0;
1717}
1718EXPORT_SYMBOL(dvb_register_frontend);
1719
1720int dvb_unregister_frontend(struct dvb_frontend* fe)
1721{
0c53c70f 1722 struct dvb_frontend_private *fepriv = fe->frontend_priv;
46b4f7c1 1723 dprintk ("%s\n", __func__);
1da177e4 1724
57861b43 1725 mutex_lock(&frontend_mutex);
ca5be9cd 1726 dvb_frontend_stop (fe);
57861b43
MR		 1727 mutex_unlock(&frontend_mutex);
1728
1729 if (fepriv->dvbdev->users < -1)
1730 wait_event(fepriv->dvbdev->wait_queue,
1731 fepriv->dvbdev->users==-1);
1732
3593cab5 1733 mutex_lock(&frontend_mutex);
1da177e4 1734 dvb_unregister_device (fepriv->dvbdev);
d9955060 1735
1da177e4
LT		 1736 /* fe is invalid now */
1737 kfree(fepriv);
3593cab5 1738 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1739 return 0;
1740}
1741EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 1742
149ef72d 1743#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 1744void dvb_frontend_detach(struct dvb_frontend* fe)
1745{
1746 void *ptr;
1747
1748 if (fe->ops.release_sec) {
1749 fe->ops.release_sec(fe);
1750 symbol_put_addr(fe->ops.release_sec);
1751 }
1752 if (fe->ops.tuner_ops.release) {
1753 fe->ops.tuner_ops.release(fe);
1754 symbol_put_addr(fe->ops.tuner_ops.release);
1755 }
2426a27e
MK		 1756 if (fe->ops.analog_ops.release) {
1757 fe->ops.analog_ops.release(fe);
1758 symbol_put_addr(fe->ops.analog_ops.release);
1759 }
f52a838b
AQ		 1760 ptr = (void*)fe->ops.release;
1761 if (ptr) {
1762 fe->ops.release(fe);
1763 symbol_put_addr(ptr);
1764 }
1765}
1766#else
1767void dvb_frontend_detach(struct dvb_frontend* fe)
1768{
1769 if (fe->ops.release_sec)
1770 fe->ops.release_sec(fe);
1771 if (fe->ops.tuner_ops.release)
1772 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 1773 if (fe->ops.analog_ops.release)
1774 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 1775 if (fe->ops.release)
1776 fe->ops.release(fe);
1777}
1778#endif
1779EXPORT_SYMBOL(dvb_frontend_detach);
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