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V4L/DVB (9172): S2API: Bugfix related to DVB-S / DVB-S2 tuning for the legacy API.
[deliverable/linux.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"
eacf8d8d 43#include <linux/dvb/version.h>
1da177e4
LT		 44
45static int dvb_frontend_debug;
849be2cd 46static int dvb_shutdown_timeout;
1da177e4
LT		 47static int dvb_force_auto_inversion;
48static int dvb_override_tune_delay;
49static int dvb_powerdown_on_sleep = 1;
50
51module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 52MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 53module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 54MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 55module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 56MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 57module_param(dvb_override_tune_delay, int, 0644);
1da177e4 58MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 59module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 60MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
1da177e4
LT		 61
62#define dprintk if (dvb_frontend_debug) printk
63
64#define FESTATE_IDLE 1
65#define FESTATE_RETUNE 2
66#define FESTATE_TUNING_FAST 4
67#define FESTATE_TUNING_SLOW 8
68#define FESTATE_TUNED 16
69#define FESTATE_ZIGZAG_FAST 32
70#define FESTATE_ZIGZAG_SLOW 64
71#define FESTATE_DISEQC 128
72#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
73#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
74#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
75#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16
MA		 76
77#define FE_ALGO_HW 1
1da177e4
LT		 78/*
79 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
80 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
81 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
82 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
83 * FESTATE_TUNED. The frontend has successfully locked on.
84 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
85 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
86 * FESTATE_DISEQC. A DISEQC command has just been issued.
87 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
88 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
89 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
90 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
91 */
92
3593cab5 93static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 94
95struct dvb_frontend_private {
96
36cb557a 97 /* thread/frontend values */
1da177e4
LT		 98 struct dvb_device *dvbdev;
99 struct dvb_frontend_parameters parameters;
100 struct dvb_fe_events events;
101 struct semaphore sem;
102 struct list_head list_head;
103 wait_queue_head_t wait_queue;
8eec1429 104 struct task_struct *thread;
1da177e4 105 unsigned long release_jiffies;
36cb557a
AQ		 106 unsigned int exit;
107 unsigned int wakeup;
1da177e4 108 fe_status_t status;
400b7083 109 unsigned long tune_mode_flags;
36cb557a 110 unsigned int delay;
86f40cc3 111 unsigned int reinitialise;
64454016
AQ		 112 int tone;
113 int voltage;
36cb557a
AQ		 114
115 /* swzigzag values */
116 unsigned int state;
117 unsigned int bending;
118 int lnb_drift;
119 unsigned int inversion;
120 unsigned int auto_step;
121 unsigned int auto_sub_step;
122 unsigned int started_auto_step;
123 unsigned int min_delay;
124 unsigned int max_drift;
125 unsigned int step_size;
126 int quality;
127 unsigned int check_wrapped;
1da177e4
LT		 128};
129
86f40cc3 130static void dvb_frontend_wakeup(struct dvb_frontend *fe);
1da177e4
LT		 131
132static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
133{
0c53c70f 134 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 135 struct dvb_fe_events *events = &fepriv->events;
136 struct dvb_frontend_event *e;
137 int wp;
138
46b4f7c1 139 dprintk ("%s\n", __func__);
1da177e4 140
03b76123 141 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 142 return;
143
144 wp = (events->eventw + 1) % MAX_EVENT;
145
146 if (wp == events->eventr) {
147 events->overflow = 1;
148 events->eventr = (events->eventr + 1) % MAX_EVENT;
149 }
150
151 e = &events->events[events->eventw];
152
153 memcpy (&e->parameters, &fepriv->parameters,
154 sizeof (struct dvb_frontend_parameters));
155
156 if (status & FE_HAS_LOCK)
dea74869
PB		 157 if (fe->ops.get_frontend)
158 fe->ops.get_frontend(fe, &e->parameters);
1da177e4
LT		 159
160 events->eventw = wp;
161
03b76123 162 mutex_unlock(&events->mtx);
1da177e4
LT		 163
164 e->status = status;
165
166 wake_up_interruptible (&events->wait_queue);
167}
168
169static int dvb_frontend_get_event(struct dvb_frontend *fe,
170 struct dvb_frontend_event *event, int flags)
171{
0c53c70f 172 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 173 struct dvb_fe_events *events = &fepriv->events;
174
46b4f7c1 175 dprintk ("%s\n", __func__);
1da177e4
LT		 176
177 if (events->overflow) {
178 events->overflow = 0;
179 return -EOVERFLOW;
180 }
181
182 if (events->eventw == events->eventr) {
183 int ret;
184
185 if (flags & O_NONBLOCK)
186 return -EWOULDBLOCK;
187
188 up(&fepriv->sem);
189
190 ret = wait_event_interruptible (events->wait_queue,
191 events->eventw != events->eventr);
192
193 if (down_interruptible (&fepriv->sem))
194 return -ERESTARTSYS;
195
196 if (ret < 0)
197 return ret;
198 }
199
03b76123 200 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 201 return -ERESTARTSYS;
202
203 memcpy (event, &events->events[events->eventr],
204 sizeof(struct dvb_frontend_event));
205
206 events->eventr = (events->eventr + 1) % MAX_EVENT;
207
03b76123 208 mutex_unlock(&events->mtx);
1da177e4
LT		 209
210 return 0;
211}
212
213static void dvb_frontend_init(struct dvb_frontend *fe)
214{
215 dprintk ("DVB: initialising frontend %i (%s)...\n",
216 fe->dvb->num,
dea74869
PB		 217 fe->ops.info.name);
218
219 if (fe->ops.init)
220 fe->ops.init(fe);
221 if (fe->ops.tuner_ops.init) {
222 fe->ops.tuner_ops.init(fe);
223 if (fe->ops.i2c_gate_ctrl)
224 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 225 }
1da177e4
LT		 226}
227
86f40cc3
AQ		 228void dvb_frontend_reinitialise(struct dvb_frontend *fe)
229{
230 struct dvb_frontend_private *fepriv = fe->frontend_priv;
231
232 fepriv->reinitialise = 1;
233 dvb_frontend_wakeup(fe);
234}
235EXPORT_SYMBOL(dvb_frontend_reinitialise);
236
36cb557a 237static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 238{
36cb557a 239 int q2;
1da177e4 240
46b4f7c1 241 dprintk ("%s\n", __func__);
1da177e4 242
36cb557a
AQ		 243 if (locked)
244 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
245 else
246 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 247
36cb557a
AQ		 248 q2 = fepriv->quality - 128;
249 q2 *= q2;
1da177e4 250
36cb557a 251 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 252}
253
254/**
255 * Performs automatic twiddling of frontend parameters.
256 *
257 * @param fe The frontend concerned.
258 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
259 * @returns Number of complete iterations that have been performed.
260 */
36cb557a 261static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 262{
263 int autoinversion;
264 int ready = 0;
0c53c70f 265 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 266 int original_inversion = fepriv->parameters.inversion;
267 u32 original_frequency = fepriv->parameters.frequency;
268
269 /* are we using autoinversion? */
dea74869 270 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
1da177e4
LT		 271 (fepriv->parameters.inversion == INVERSION_AUTO));
272
273 /* setup parameters correctly */
274 while(!ready) {
275 /* calculate the lnb_drift */
276 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
277
278 /* wrap the auto_step if we've exceeded the maximum drift */
279 if (fepriv->lnb_drift > fepriv->max_drift) {
280 fepriv->auto_step = 0;
281 fepriv->auto_sub_step = 0;
282 fepriv->lnb_drift = 0;
283 }
284
285 /* perform inversion and +/- zigzag */
286 switch(fepriv->auto_sub_step) {
287 case 0:
288 /* try with the current inversion and current drift setting */
289 ready = 1;
290 break;
291
292 case 1:
293 if (!autoinversion) break;
294
295 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
296 ready = 1;
297 break;
298
299 case 2:
300 if (fepriv->lnb_drift == 0) break;
301
302 fepriv->lnb_drift = -fepriv->lnb_drift;
303 ready = 1;
304 break;
305
306 case 3:
307 if (fepriv->lnb_drift == 0) break;
308 if (!autoinversion) break;
309
310 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
311 fepriv->lnb_drift = -fepriv->lnb_drift;
312 ready = 1;
313 break;
314
315 default:
316 fepriv->auto_step++;
317 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
318 break;
319 }
320
321 if (!ready) fepriv->auto_sub_step++;
322 }
323
324 /* if this attempt would hit where we started, indicate a complete
325 * iteration has occurred */
326 if ((fepriv->auto_step == fepriv->started_auto_step) &&
327 (fepriv->auto_sub_step == 0) && check_wrapped) {
328 return 1;
329 }
330
331 dprintk("%s: drift:%i inversion:%i auto_step:%i "
332 "auto_sub_step:%i started_auto_step:%i\n",
46b4f7c1 333 __func__, fepriv->lnb_drift, fepriv->inversion,
1da177e4
LT		 334 fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
335
336 /* set the frontend itself */
337 fepriv->parameters.frequency += fepriv->lnb_drift;
338 if (autoinversion)
339 fepriv->parameters.inversion = fepriv->inversion;
dea74869
PB		 340 if (fe->ops.set_frontend)
341 fe->ops.set_frontend(fe, &fepriv->parameters);
1da177e4
LT		 342
343 fepriv->parameters.frequency = original_frequency;
344 fepriv->parameters.inversion = original_inversion;
345
346 fepriv->auto_sub_step++;
347 return 0;
348}
349
36cb557a
AQ		 350static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
351{
30d9464c 352 fe_status_t s = 0;
36cb557a
AQ		 353 struct dvb_frontend_private *fepriv = fe->frontend_priv;
354
355 /* if we've got no parameters, just keep idling */
356 if (fepriv->state & FESTATE_IDLE) {
357 fepriv->delay = 3*HZ;
358 fepriv->quality = 0;
359 return;
360 }
361
362 /* in SCAN mode, we just set the frontend when asked and leave it alone */
363 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
364 if (fepriv->state & FESTATE_RETUNE) {
dea74869
PB		 365 if (fe->ops.set_frontend)
366 fe->ops.set_frontend(fe, &fepriv->parameters);
36cb557a
AQ		 367 fepriv->state = FESTATE_TUNED;
368 }
369 fepriv->delay = 3*HZ;
370 fepriv->quality = 0;
371 return;
372 }
373
374 /* get the frontend status */
375 if (fepriv->state & FESTATE_RETUNE) {
376 s = 0;
377 } else {
dea74869
PB		 378 if (fe->ops.read_status)
379 fe->ops.read_status(fe, &s);
36cb557a
AQ		 380 if (s != fepriv->status) {
381 dvb_frontend_add_event(fe, s);
382 fepriv->status = s;
383 }
384 }
385
386 /* if we're not tuned, and we have a lock, move to the TUNED state */
387 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
388 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
389 fepriv->state = FESTATE_TUNED;
390
391 /* if we're tuned, then we have determined the correct inversion */
dea74869 392 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
36cb557a
AQ		 393 (fepriv->parameters.inversion == INVERSION_AUTO)) {
394 fepriv->parameters.inversion = fepriv->inversion;
395 }
396 return;
397 }
398
399 /* if we are tuned already, check we're still locked */
400 if (fepriv->state & FESTATE_TUNED) {
401 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
402
403 /* we're tuned, and the lock is still good... */
404 if (s & FE_HAS_LOCK) {
405 return;
406 } else { /* if we _WERE_ tuned, but now don't have a lock */
407 fepriv->state = FESTATE_ZIGZAG_FAST;
408 fepriv->started_auto_step = fepriv->auto_step;
409 fepriv->check_wrapped = 0;
410 }
411 }
412
413 /* don't actually do anything if we're in the LOSTLOCK state,
414 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
415 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 416 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 417 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
418 return;
419 }
420
421 /* don't do anything if we're in the DISEQC state, since this
422 * might be someone with a motorized dish controlled by DISEQC.
423 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
424 if (fepriv->state & FESTATE_DISEQC) {
425 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
426 return;
427 }
428
429 /* if we're in the RETUNE state, set everything up for a brand
430 * new scan, keeping the current inversion setting, as the next
431 * tune is _very_ likely to require the same */
432 if (fepriv->state & FESTATE_RETUNE) {
433 fepriv->lnb_drift = 0;
434 fepriv->auto_step = 0;
435 fepriv->auto_sub_step = 0;
436 fepriv->started_auto_step = 0;
437 fepriv->check_wrapped = 0;
438 }
439
440 /* fast zigzag. */
441 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
442 fepriv->delay = fepriv->min_delay;
443
444 /* peform a tune */
445 if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) {
446 /* OK, if we've run out of trials at the fast speed.
447 * Drop back to slow for the _next_ attempt */
448 fepriv->state = FESTATE_SEARCHING_SLOW;
449 fepriv->started_auto_step = fepriv->auto_step;
450 return;
451 }
452 fepriv->check_wrapped = 1;
453
454 /* if we've just retuned, enter the ZIGZAG_FAST state.
455 * This ensures we cannot return from an
456 * FE_SET_FRONTEND ioctl before the first frontend tune
457 * occurs */
458 if (fepriv->state & FESTATE_RETUNE) {
459 fepriv->state = FESTATE_TUNING_FAST;
460 }
461 }
462
463 /* slow zigzag */
464 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
465 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
466
467 /* Note: don't bother checking for wrapping; we stay in this
468 * state until we get a lock */
469 dvb_frontend_swzigzag_autotune(fe, 0);
470 }
471}
472
1da177e4
LT		 473static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
474{
0c53c70f 475 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 476
477 if (fepriv->exit)
478 return 1;
479
480 if (fepriv->dvbdev->writers == 1)
cc89c229 481 if (time_after(jiffies, fepriv->release_jiffies +
36cb557a 482 dvb_shutdown_timeout * HZ))
1da177e4
LT		 483 return 1;
484
485 return 0;
486}
487
488static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
489{
0c53c70f 490 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 491
492 if (fepriv->wakeup) {
493 fepriv->wakeup = 0;
494 return 1;
495 }
496 return dvb_frontend_is_exiting(fe);
497}
498
499static void dvb_frontend_wakeup(struct dvb_frontend *fe)
500{
0c53c70f 501 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 502
503 fepriv->wakeup = 1;
504 wake_up_interruptible(&fepriv->wait_queue);
505}
506
1da177e4
LT		 507static int dvb_frontend_thread(void *data)
508{
0c53c70f
JS		 509 struct dvb_frontend *fe = data;
510 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 511 unsigned long timeout;
1da177e4 512 fe_status_t s;
36cb557a 513 struct dvb_frontend_parameters *params;
1da177e4 514
46b4f7c1 515 dprintk("%s\n", __func__);
1da177e4 516
36cb557a
AQ		 517 fepriv->check_wrapped = 0;
518 fepriv->quality = 0;
519 fepriv->delay = 3*HZ;
1da177e4 520 fepriv->status = 0;
1da177e4 521 fepriv->wakeup = 0;
04c56d0e
AQ		 522 fepriv->reinitialise = 0;
523
524 dvb_frontend_init(fe);
1da177e4 525
83144186 526 set_freezable();
1da177e4
LT		 527 while (1) {
528 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 529restart:
1da177e4 530 timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 531 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
532 || freezing(current),
8eec1429
HP		 533 fepriv->delay);
534
535 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4
LT		 536 /* got signal or quitting */
537 break;
538 }
539
8eec1429 540 if (try_to_freeze())
6591691b 541 goto restart;
1da177e4
LT		 542
543 if (down_interruptible(&fepriv->sem))
544 break;
545
86f40cc3
AQ		 546 if (fepriv->reinitialise) {
547 dvb_frontend_init(fe);
64454016 548 if (fepriv->tone != -1) {
dea74869 549 fe->ops.set_tone(fe, fepriv->tone);
64454016
AQ		 550 }
551 if (fepriv->voltage != -1) {
dea74869 552 fe->ops.set_voltage(fe, fepriv->voltage);
64454016 553 }
86f40cc3
AQ		 554 fepriv->reinitialise = 0;
555 }
556
36cb557a 557 /* do an iteration of the tuning loop */
d772bd03
MA		 558 if (fe->ops.get_frontend_algo) {
559 if (fe->ops.get_frontend_algo(fe) == FE_ALGO_HW) {
560 /* have we been asked to retune? */
561 params = NULL;
562 if (fepriv->state & FESTATE_RETUNE) {
563 params = &fepriv->parameters;
564 fepriv->state = FESTATE_TUNED;
565 }
566
567 fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
568 if (s != fepriv->status) {
569 dvb_frontend_add_event(fe, s);
570 fepriv->status = s;
571 }
70d90635
MA		 572 } else
573 dvb_frontend_swzigzag(fe);
4a4edcca
MA		 574 } else
575 dvb_frontend_swzigzag(fe);
1da177e4
LT		 576 }
577
608f62d6
OE		 578 if (dvb_powerdown_on_sleep) {
579 if (fe->ops.set_voltage)
580 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869
PB		 581 if (fe->ops.tuner_ops.sleep) {
582 fe->ops.tuner_ops.sleep(fe);
583 if (fe->ops.i2c_gate_ctrl)
584 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 585 }
dea74869
PB		 586 if (fe->ops.sleep)
587 fe->ops.sleep(fe);
1da177e4
LT		 588 }
589
8eec1429 590 fepriv->thread = NULL;
1da177e4
LT		 591 mb();
592
593 dvb_frontend_wakeup(fe);
594 return 0;
595}
596
597static void dvb_frontend_stop(struct dvb_frontend *fe)
598{
0c53c70f 599 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 600
46b4f7c1 601 dprintk ("%s\n", __func__);
1da177e4
LT		 602
603 fepriv->exit = 1;
604 mb();
605
8eec1429 606 if (!fepriv->thread)
1da177e4
LT		 607 return;
608
8eec1429 609 kthread_stop(fepriv->thread);
ca5be9cd 610
8eec1429 611 init_MUTEX (&fepriv->sem);
1da177e4
LT		 612 fepriv->state = FESTATE_IDLE;
613
614 /* paranoia check in case a signal arrived */
8eec1429
HP		 615 if (fepriv->thread)
616 printk("dvb_frontend_stop: warning: thread %p won't exit\n",
617 fepriv->thread);
1da177e4
LT		 618}
619
83b75b04
N		 620s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
621{
622 return ((curtime.tv_usec < lasttime.tv_usec) ?
623 1000000 - lasttime.tv_usec + curtime.tv_usec :
624 curtime.tv_usec - lasttime.tv_usec);
625}
626EXPORT_SYMBOL(timeval_usec_diff);
627
628static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
629{
630 curtime->tv_usec += add_usec;
631 if (curtime->tv_usec >= 1000000) {
632 curtime->tv_usec -= 1000000;
633 curtime->tv_sec++;
634 }
635}
636
637/*
638 * Sleep until gettimeofday() > waketime + add_usec
639 * This needs to be as precise as possible, but as the delay is
640 * usually between 2ms and 32ms, it is done using a scheduled msleep
641 * followed by usleep (normally a busy-wait loop) for the remainder
642 */
643void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
644{
645 struct timeval lasttime;
646 s32 delta, newdelta;
647
648 timeval_usec_add(waketime, add_usec);
649
650 do_gettimeofday(&lasttime);
651 delta = timeval_usec_diff(lasttime, *waketime);
652 if (delta > 2500) {
653 msleep((delta - 1500) / 1000);
654 do_gettimeofday(&lasttime);
655 newdelta = timeval_usec_diff(lasttime, *waketime);
656 delta = (newdelta > delta) ? 0 : newdelta;
657 }
658 if (delta > 0)
659 udelay(delta);
660}
661EXPORT_SYMBOL(dvb_frontend_sleep_until);
662
1da177e4
LT		 663static int dvb_frontend_start(struct dvb_frontend *fe)
664{
665 int ret;
0c53c70f 666 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 667 struct task_struct *fe_thread;
1da177e4 668
46b4f7c1 669 dprintk ("%s\n", __func__);
1da177e4 670
8eec1429 671 if (fepriv->thread) {
1da177e4
LT		 672 if (!fepriv->exit)
673 return 0;
674 else
675 dvb_frontend_stop (fe);
676 }
677
678 if (signal_pending(current))
679 return -EINTR;
680 if (down_interruptible (&fepriv->sem))
681 return -EINTR;
682
683 fepriv->state = FESTATE_IDLE;
684 fepriv->exit = 0;
8eec1429 685 fepriv->thread = NULL;
1da177e4
LT		 686 mb();
687
8eec1429
HP		 688 fe_thread = kthread_run(dvb_frontend_thread, fe,
689 "kdvb-fe-%i", fe->dvb->num);
690 if (IS_ERR(fe_thread)) {
691 ret = PTR_ERR(fe_thread);
692 printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
1da177e4
LT		 693 up(&fepriv->sem);
694 return ret;
695 }
8eec1429 696 fepriv->thread = fe_thread;
1da177e4
LT		 697 return 0;
698}
699
c471b331
OE		 700static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
701 u32 *freq_min, u32 *freq_max)
702{
703 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
704
705 if (fe->ops.info.frequency_max == 0)
706 *freq_max = fe->ops.tuner_ops.info.frequency_max;
707 else if (fe->ops.tuner_ops.info.frequency_max == 0)
708 *freq_max = fe->ops.info.frequency_max;
709 else
710 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
711
712 if (*freq_min == 0 || *freq_max == 0)
713 printk(KERN_WARNING "DVB: frontend %u frequency limits undefined - fix the driver\n",
714 fe->dvb->num);
715}
716
1fab46f0
OE		 717static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
718 struct dvb_frontend_parameters *parms)
719{
c471b331
OE		 720 u32 freq_min;
721 u32 freq_max;
722
1fab46f0 723 /* range check: frequency */
c471b331
OE		 724 dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
725 if ((freq_min && parms->frequency < freq_min) ||
726 (freq_max && parms->frequency > freq_max)) {
1fab46f0 727 printk(KERN_WARNING "DVB: frontend %u frequency %u out of range (%u..%u)\n",
c471b331 728 fe->dvb->num, parms->frequency, freq_min, freq_max);
1fab46f0
OE		 729 return -EINVAL;
730 }
731
732 /* range check: symbol rate */
733 if (fe->ops.info.type == FE_QPSK) {
734 if ((fe->ops.info.symbol_rate_min &&
735 parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
736 (fe->ops.info.symbol_rate_max &&
737 parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
738 printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
739 fe->dvb->num, parms->u.qpsk.symbol_rate,
740 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
741 return -EINVAL;
742 }
743
744 } else if (fe->ops.info.type == FE_QAM) {
745 if ((fe->ops.info.symbol_rate_min &&
746 parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
747 (fe->ops.info.symbol_rate_max &&
748 parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
749 printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n",
750 fe->dvb->num, parms->u.qam.symbol_rate,
751 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
752 return -EINVAL;
753 }
754 }
755
756 return 0;
757}
758
56f0680a 759struct dtv_cmds_h dtv_cmds[] = {
e7fee0f3
ST		 760 [DTV_TUNE] = {
761 .name = "DTV_TUNE",
762 .cmd = DTV_TUNE,
6b73eeaf
ST		 763 .set = 1,
764 },
e7fee0f3
ST		 765 [DTV_CLEAR] = {
766 .name = "DTV_CLEAR",
767 .cmd = DTV_CLEAR,
6b73eeaf
ST		 768 .set = 1,
769 },
770
771 /* Set */
363429a0
ST		 772 [DTV_FREQUENCY] = {
773 .name = "DTV_FREQUENCY",
774 .cmd = DTV_FREQUENCY,
6b73eeaf
ST		 775 .set = 1,
776 },
75b7f943
ST		 777 [DTV_BANDWIDTH_HZ] = {
778 .name = "DTV_BANDWIDTH_HZ",
779 .cmd = DTV_BANDWIDTH_HZ,
6b73eeaf
ST		 780 .set = 1,
781 },
363429a0
ST		 782 [DTV_MODULATION] = {
783 .name = "DTV_MODULATION",
784 .cmd = DTV_MODULATION,
6b73eeaf
ST		 785 .set = 1,
786 },
363429a0
ST		 787 [DTV_INVERSION] = {
788 .name = "DTV_INVERSION",
789 .cmd = DTV_INVERSION,
6b73eeaf
ST		 790 .set = 1,
791 },
363429a0
ST		 792 [DTV_DISEQC_MASTER] = {
793 .name = "DTV_DISEQC_MASTER",
794 .cmd = DTV_DISEQC_MASTER,
6b73eeaf
ST		 795 .set = 1,
796 .buffer = 1,
797 },
363429a0
ST		 798 [DTV_SYMBOL_RATE] = {
799 .name = "DTV_SYMBOL_RATE",
800 .cmd = DTV_SYMBOL_RATE,
6b73eeaf
ST		 801 .set = 1,
802 },
363429a0
ST		 803 [DTV_INNER_FEC] = {
804 .name = "DTV_INNER_FEC",
805 .cmd = DTV_INNER_FEC,
6b73eeaf
ST		 806 .set = 1,
807 },
363429a0
ST		 808 [DTV_VOLTAGE] = {
809 .name = "DTV_VOLTAGE",
810 .cmd = DTV_VOLTAGE,
6b73eeaf
ST		 811 .set = 1,
812 },
363429a0
ST		 813 [DTV_TONE] = {
814 .name = "DTV_TONE",
815 .cmd = DTV_TONE,
6b73eeaf
ST		 816 .set = 1,
817 },
363429a0
ST		 818 [DTV_PILOT] = {
819 .name = "DTV_PILOT",
820 .cmd = DTV_PILOT,
6b73eeaf
ST		 821 .set = 1,
822 },
363429a0
ST		 823 [DTV_ROLLOFF] = {
824 .name = "DTV_ROLLOFF",
825 .cmd = DTV_ROLLOFF,
6b73eeaf
ST		 826 .set = 1,
827 },
363429a0
ST		 828 [DTV_DELIVERY_SYSTEM] = {
829 .name = "DTV_DELIVERY_SYSTEM",
830 .cmd = DTV_DELIVERY_SYSTEM,
6b73eeaf
ST		 831 .set = 1,
832 },
6b73eeaf 833 /* Get */
363429a0
ST		 834 [DTV_DISEQC_SLAVE_REPLY] = {
835 .name = "DTV_DISEQC_SLAVE_REPLY",
836 .cmd = DTV_DISEQC_SLAVE_REPLY,
6b73eeaf
ST		 837 .set = 0,
838 .buffer = 1,
839 },
eacf8d8d
ST		 840 [DTV_API_VERSION] = {
841 .name = "DTV_API_VERSION",
842 .cmd = DTV_API_VERSION,
843 .set = 0,
844 },
6b73eeaf
ST		 845};
846
e7fee0f3 847void dtv_property_dump(struct dtv_property *tvp)
6b73eeaf
ST		 848{
849 int i;
850
4aae8efb
DB		 851 if( (tvp->cmd <= 0 || tvp->cmd > DTV_DELIVERY_SYSTEM) &&
852 tvp->cmd != DTV_API_VERSION) {
853 printk("%s: tvp.cmd = 0x%08x (undefined/unknown/invalid)\n",
854 __func__, tvp->cmd);
855 return;
856 }
857
6b73eeaf
ST		 858 printk("%s() tvp.cmd = 0x%08x (%s)\n"
859 ,__FUNCTION__
860 ,tvp->cmd
56f0680a 861 ,dtv_cmds[ tvp->cmd ].name);
6b73eeaf 862
56f0680a 863 if(dtv_cmds[ tvp->cmd ].buffer) {
6b73eeaf
ST		 864
865 printk("%s() tvp.u.buffer.len = 0x%02x\n"
866 ,__FUNCTION__
867 ,tvp->u.buffer.len);
868
869 for(i = 0; i < tvp->u.buffer.len; i++)
870 printk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
871 ,__FUNCTION__
872 ,i
873 ,tvp->u.buffer.data[i]);
874
875 } else
876 printk("%s() tvp.u.data = 0x%08x\n", __FUNCTION__, tvp->u.data);
877}
878
879int is_legacy_delivery_system(fe_delivery_system_t s)
880{
881 if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
882 (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS))
883 return 1;
884
885 return 0;
886}
887
ee33c525
ST		 888/* Synchronise the legacy tuning parameters into the cache, so that demodulator
889 * drivers can use a single set_frontend tuning function, regardless of whether
890 * it's being used for the legacy or new API, reducing code and complexity.
891 */
892void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
893{
894 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
895
d5748f10
ST		 896 printk("%s()\n", __FUNCTION__);
897
ee33c525
ST		 898 c->frequency = p->frequency;
899 c->inversion = p->inversion;
900
901 switch (fe->ops.info.type) {
902 case FE_QPSK:
e5cefa82
DB		 903 c->modulation = QPSK; /* implied for DVB-S in legacy API */
904 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
ee33c525
ST		 905 c->symbol_rate = p->u.qpsk.symbol_rate;
906 c->fec_inner = p->u.qpsk.fec_inner;
80a773c9 907 c->delivery_system = SYS_DVBS;
ee33c525
ST		 908 break;
909 case FE_QAM:
910 c->symbol_rate = p->u.qam.symbol_rate;
911 c->fec_inner = p->u.qam.fec_inner;
912 c->modulation = p->u.qam.modulation;
80a773c9 913 c->delivery_system = SYS_DVBC_ANNEX_AC;
ee33c525
ST		 914 break;
915 case FE_OFDM:
75b7f943
ST		 916 if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
917 c->bandwidth_hz = 6000000;
918 else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
919 c->bandwidth_hz = 7000000;
920 else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
921 c->bandwidth_hz = 8000000;
922 else
923 /* Including BANDWIDTH_AUTO */
924 c->bandwidth_hz = 0;
ee33c525
ST		 925 c->code_rate_HP = p->u.ofdm.code_rate_HP;
926 c->code_rate_LP = p->u.ofdm.code_rate_LP;
927 c->modulation = p->u.ofdm.constellation;
928 c->transmission_mode = p->u.ofdm.transmission_mode;
929 c->guard_interval = p->u.ofdm.guard_interval;
930 c->hierarchy = p->u.ofdm.hierarchy_information;
80a773c9 931 c->delivery_system = SYS_DVBT;
ee33c525
ST		 932 break;
933 case FE_ATSC:
934 c->modulation = p->u.vsb.modulation;
80a773c9
ST		 935 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
936 c->delivery_system = SYS_ATSC;
937 else
938 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525
ST		 939 break;
940 }
941}
942
d5748f10
ST		 943/* Ensure the cached values are set correctly in the frontend
944 * legacy tuning structures, for the advanced tuning API.
945 */
946void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
6b73eeaf 947{
d5748f10
ST		 948 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
949 struct dvb_frontend_private *fepriv = fe->frontend_priv;
950 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 951
d5748f10 952 printk("%s()\n", __FUNCTION__);
6b73eeaf 953
d5748f10
ST		 954 p->frequency = c->frequency;
955 p->inversion = c->inversion;
6b73eeaf 956
d5748f10
ST		 957 switch (fe->ops.info.type) {
958 case FE_QPSK:
959 printk("%s() Preparing QPSK req\n", __FUNCTION__);
960 p->u.qpsk.symbol_rate = c->symbol_rate;
961 p->u.qpsk.fec_inner = c->fec_inner;
80a773c9 962 c->delivery_system = SYS_DVBS;
d5748f10
ST		 963 break;
964 case FE_QAM:
965 printk("%s() Preparing QAM req\n", __FUNCTION__);
966 p->u.qam.symbol_rate = c->symbol_rate;
967 p->u.qam.fec_inner = c->fec_inner;
968 p->u.qam.modulation = c->modulation;
80a773c9 969 c->delivery_system = SYS_DVBC_ANNEX_AC;
d5748f10
ST		 970 break;
971 case FE_OFDM:
972 printk("%s() Preparing OFDM req\n", __FUNCTION__);
75b7f943
ST		 973 if (c->bandwidth_hz == 6000000)
974 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
975 else if (c->bandwidth_hz == 7000000)
976 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
977 else if (c->bandwidth_hz == 8000000)
978 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
979 else
980 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 981 p->u.ofdm.code_rate_HP = c->code_rate_HP;
982 p->u.ofdm.code_rate_LP = c->code_rate_LP;
983 p->u.ofdm.constellation = c->modulation;
984 p->u.ofdm.transmission_mode = c->transmission_mode;
985 p->u.ofdm.guard_interval = c->guard_interval;
986 p->u.ofdm.hierarchy_information = c->hierarchy;
80a773c9 987 c->delivery_system = SYS_DVBT;
d5748f10
ST		 988 break;
989 case FE_ATSC:
990 printk("%s() Preparing VSB req\n", __FUNCTION__);
991 p->u.vsb.modulation = c->modulation;
80a773c9
ST		 992 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
993 c->delivery_system = SYS_ATSC;
994 else
995 c->delivery_system = SYS_DVBC_ANNEX_B;
d5748f10
ST		 996 break;
997 }
998}
999
1000/* Ensure the cached values are set correctly in the frontend
1001 * legacy tuning structures, for the legacy tuning API.
1002 */
1003void dtv_property_adv_params_sync(struct dvb_frontend *fe)
1004{
56f0680a 1005 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1006 struct dvb_frontend_private *fepriv = fe->frontend_priv;
d5748f10 1007 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf
ST		 1008
1009 printk("%s()\n", __FUNCTION__);
1010
d5748f10
ST		 1011 p->frequency = c->frequency;
1012 p->inversion = c->inversion;
1013
1014 switch(c->modulation) {
1015 case _8PSK:
1016 case _16APSK:
1017 case NBC_QPSK:
1018 p->u.qpsk.symbol_rate = c->symbol_rate;
1019 p->u.qpsk.fec_inner = c->fec_inner;
1020 break;
1021 default:
1022 break;
1023 }
1024
1025 if(c->delivery_system == SYS_ISDBT) {
1026 /* Fake out a generic DVB-T request so we pass validation in the ioctl */
1027 p->frequency = c->frequency;
1028 p->inversion = INVERSION_AUTO;
1029 p->u.ofdm.constellation = QAM_AUTO;
1030 p->u.ofdm.code_rate_HP = FEC_AUTO;
1031 p->u.ofdm.code_rate_LP = FEC_AUTO;
1032 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
1033 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
1034 p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
1035 p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
1036 }
1037}
1038
1039void dtv_property_cache_submit(struct dvb_frontend *fe)
1040{
1041 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1042
1043 printk("%s()\n", __FUNCTION__);
1044
1045 /* For legacy delivery systems we don't need the delivery_system to
1046 * be specified, but we populate the older structures from the cache
1047 * so we can call set_frontend on older drivers.
1048 */
6b73eeaf 1049 if(is_legacy_delivery_system(c->delivery_system)) {
6b73eeaf 1050
d5748f10
ST		 1051 printk("%s() legacy, modulation = %d\n", __FUNCTION__, c->modulation);
1052 dtv_property_legacy_params_sync(fe);
6b73eeaf 1053
6b73eeaf 1054 } else {
d5748f10
ST		 1055 printk("%s() adv, modulation = %d\n", __FUNCTION__, c->modulation);
1056
6b73eeaf
ST		 1057 /* For advanced delivery systems / modulation types ...
1058 * we seed the lecacy dvb_frontend_parameters structure
1059 * so that the sanity checking code later in the IOCTL processing
1060 * can validate our basic frequency ranges, symbolrates, modulation
1061 * etc.
1062 */
d5748f10 1063 dtv_property_adv_params_sync(fe);
6b73eeaf 1064 }
6b73eeaf
ST		 1065}
1066
13c97bf5
ST		 1067static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1068 unsigned int cmd, void *parg);
1069static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1070 unsigned int cmd, void *parg);
1071
363429a0
ST		 1072int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp,
1073 struct inode *inode, struct file *file)
1074{
1075 int r = 0;
1076
1077 printk("%s()\n", __FUNCTION__);
1078
1079 dtv_property_dump(tvp);
1080
bfbf2dae
ST		 1081 /* Allow the frontend to validate incoming properties */
1082 if (fe->ops.get_property)
1083 r = fe->ops.get_property(fe, tvp);
1084
1085 if (r < 0)
1086 return r;
1087
363429a0
ST		 1088 switch(tvp->cmd) {
1089 case DTV_FREQUENCY:
1090 tvp->u.data = fe->dtv_property_cache.frequency;
1091 break;
1092 case DTV_MODULATION:
1093 tvp->u.data = fe->dtv_property_cache.modulation;
1094 break;
75b7f943
ST		 1095 case DTV_BANDWIDTH_HZ:
1096 tvp->u.data = fe->dtv_property_cache.bandwidth_hz;
363429a0
ST		 1097 break;
1098 case DTV_INVERSION:
1099 tvp->u.data = fe->dtv_property_cache.inversion;
1100 break;
1101 case DTV_SYMBOL_RATE:
1102 tvp->u.data = fe->dtv_property_cache.symbol_rate;
1103 break;
1104 case DTV_INNER_FEC:
1105 tvp->u.data = fe->dtv_property_cache.fec_inner;
1106 break;
1107 case DTV_PILOT:
1108 tvp->u.data = fe->dtv_property_cache.pilot;
1109 break;
1110 case DTV_ROLLOFF:
1111 tvp->u.data = fe->dtv_property_cache.rolloff;
1112 break;
1113 case DTV_DELIVERY_SYSTEM:
1114 tvp->u.data = fe->dtv_property_cache.delivery_system;
1115 break;
363429a0
ST		 1116 case DTV_VOLTAGE:
1117 tvp->u.data = fe->dtv_property_cache.voltage;
1118 break;
1119 case DTV_TONE:
1120 tvp->u.data = fe->dtv_property_cache.sectone;
1121 break;
eacf8d8d
ST		 1122 case DTV_API_VERSION:
1123 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1124 break;
363429a0
ST		 1125 default:
1126 r = -1;
1127 }
1128
1129 return r;
1130}
1131
1132int dtv_property_process_set(struct dvb_frontend *fe, struct dtv_property *tvp,
13c97bf5 1133 struct inode *inode, struct file *file)
6b73eeaf
ST		 1134{
1135 int r = 0;
13c97bf5 1136 struct dvb_frontend_private *fepriv = fe->frontend_priv;
6b73eeaf 1137 printk("%s()\n", __FUNCTION__);
56f0680a 1138 dtv_property_dump(tvp);
6b73eeaf 1139
bfbf2dae
ST		 1140 /* Allow the frontend to validate incoming properties */
1141 if (fe->ops.set_property)
1142 r = fe->ops.set_property(fe, tvp);
1143
1144 if (r < 0)
1145 return r;
1146
6b73eeaf 1147 switch(tvp->cmd) {
e7fee0f3 1148 case DTV_CLEAR:
6b73eeaf
ST		 1149 /* Reset a cache of data specific to the frontend here. This does
1150 * not effect hardware.
1151 */
1152 printk("%s() Flushing property cache\n", __FUNCTION__);
56f0680a 1153 memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties));
e7fee0f3 1154 fe->dtv_property_cache.state = tvp->cmd;
56f0680a 1155 fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;
6b73eeaf 1156 break;
e7fee0f3 1157 case DTV_TUNE:
6b73eeaf 1158 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1159 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1160 * ioctl.
6b73eeaf 1161 */
e7fee0f3 1162 fe->dtv_property_cache.state = tvp->cmd;
6b73eeaf 1163 printk("%s() Finalised property cache\n", __FUNCTION__);
d5748f10
ST		 1164 dtv_property_cache_submit(fe);
1165
13c97bf5
ST		 1166 r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
1167 &fepriv->parameters);
6b73eeaf 1168 break;
363429a0 1169 case DTV_FREQUENCY:
56f0680a 1170 fe->dtv_property_cache.frequency = tvp->u.data;
6b73eeaf 1171 break;
363429a0 1172 case DTV_MODULATION:
56f0680a 1173 fe->dtv_property_cache.modulation = tvp->u.data;
6b73eeaf 1174 break;
75b7f943
ST		 1175 case DTV_BANDWIDTH_HZ:
1176 fe->dtv_property_cache.bandwidth_hz = tvp->u.data;
6b73eeaf 1177 break;
363429a0 1178 case DTV_INVERSION:
56f0680a 1179 fe->dtv_property_cache.inversion = tvp->u.data;
6b73eeaf 1180 break;
363429a0 1181 case DTV_SYMBOL_RATE:
56f0680a 1182 fe->dtv_property_cache.symbol_rate = tvp->u.data;
6b73eeaf 1183 break;
363429a0 1184 case DTV_INNER_FEC:
56f0680a 1185 fe->dtv_property_cache.fec_inner = tvp->u.data;
6b73eeaf 1186 break;
363429a0 1187 case DTV_PILOT:
56f0680a 1188 fe->dtv_property_cache.pilot = tvp->u.data;
6b73eeaf 1189 break;
363429a0 1190 case DTV_ROLLOFF:
56f0680a 1191 fe->dtv_property_cache.rolloff = tvp->u.data;
6b73eeaf 1192 break;
363429a0 1193 case DTV_DELIVERY_SYSTEM:
56f0680a 1194 fe->dtv_property_cache.delivery_system = tvp->u.data;
6b73eeaf 1195 break;
363429a0 1196 case DTV_VOLTAGE:
56f0680a 1197 fe->dtv_property_cache.voltage = tvp->u.data;
13c97bf5 1198 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE,
56f0680a 1199 (void *)fe->dtv_property_cache.voltage);
13c97bf5 1200 break;
363429a0 1201 case DTV_TONE:
56f0680a 1202 fe->dtv_property_cache.sectone = tvp->u.data;
13c97bf5 1203 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE,
56f0680a 1204 (void *)fe->dtv_property_cache.sectone);
13c97bf5 1205 break;
363429a0
ST		 1206 default:
1207 r = -1;
6b73eeaf
ST		 1208 }
1209
13c97bf5 1210 return r;
6b73eeaf
ST		 1211}
1212
1da177e4
LT		 1213static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
1214 unsigned int cmd, void *parg)
1215{
1216 struct dvb_device *dvbdev = file->private_data;
1217 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1218 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1219 int err = -EOPNOTSUPP;
1220
46b4f7c1 1221 dprintk ("%s\n", __func__);
1da177e4 1222
813ce47c 1223 if (fepriv->exit)
1da177e4
LT		 1224 return -ENODEV;
1225
1226 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1227 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1228 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1229 return -EPERM;
1230
1231 if (down_interruptible (&fepriv->sem))
1232 return -ERESTARTSYS;
1233
13c97bf5
ST		 1234 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
1235 err = dvb_frontend_ioctl_properties(inode, file, cmd, parg);
4dd88bec
ST		 1236 else {
1237 fe->dtv_property_cache.state = DTV_UNDEFINED;
13c97bf5 1238 err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg);
4dd88bec 1239 }
13c97bf5
ST		 1240
1241 up(&fepriv->sem);
1242 return err;
1243}
1244
1245static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1246 unsigned int cmd, void *parg)
1247{
1248 struct dvb_device *dvbdev = file->private_data;
1249 struct dvb_frontend *fe = dvbdev->priv;
e6f9ec86 1250 int err = 0;
e7fee0f3
ST		 1251
1252 struct dtv_properties *tvps = NULL;
1253 struct dtv_property *tvp = NULL;
1254 int i;
13c97bf5
ST		 1255
1256 dprintk("%s\n", __func__);
1257
6b73eeaf
ST		 1258 if(cmd == FE_SET_PROPERTY) {
1259 printk("%s() FE_SET_PROPERTY\n", __FUNCTION__);
1260
e7fee0f3 1261 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1262
e7fee0f3
ST		 1263 printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num);
1264 printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props);
1265
1266 /* Put an arbitrary limit on the number of messages that can
1267 * be sent at once */
1268 if (tvps->num > DTV_IOCTL_MAX_MSGS)
1269 return -EINVAL;
1270
1271 tvp = (struct dtv_property *) kmalloc(tvps->num *
1272 sizeof(struct dtv_property), GFP_KERNEL);
1273 if (!tvp) {
1274 err = -ENOMEM;
1275 goto out;
6b73eeaf
ST		 1276 }
1277
e7fee0f3
ST		 1278 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1279 err = -EFAULT;
1280 goto out;
1281 }
1282
d48cb402
ST		 1283 for (i = 0; i < tvps->num; i++) {
1284 (tvp + i)->result = dtv_property_process_set(fe, tvp + i, inode, file);
1285 err |= (tvp + i)->result;
1286 }
e7fee0f3
ST		 1287
1288 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf 1289 printk("%s() Property cache is full, tuning\n", __FUNCTION__);
6b73eeaf 1290 }
bfbf2dae 1291
363429a0
ST		 1292 } else
1293 if(cmd == FE_GET_PROPERTY) {
1294 printk("%s() FE_GET_PROPERTY\n", __FUNCTION__);
1295
1296 tvps = (struct dtv_properties __user *)parg;
1297
1298 printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num);
1299 printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props);
1300
1301 /* Put an arbitrary limit on the number of messages that can
1302 * be sent at once */
1303 if (tvps->num > DTV_IOCTL_MAX_MSGS)
1304 return -EINVAL;
1305
1306 tvp = (struct dtv_property *) kmalloc(tvps->num *
1307 sizeof(struct dtv_property), GFP_KERNEL);
1308 if (!tvp) {
1309 err = -ENOMEM;
1310 goto out;
1311 }
1312
1313 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1314 err = -EFAULT;
1315 goto out;
1316 }
1317
d48cb402
ST		 1318 for (i = 0; i < tvps->num; i++) {
1319 (tvp + i)->result = dtv_property_process_get(fe, tvp + i, inode, file);
1320 err |= (tvp + i)->result;
1321 }
363429a0
ST		 1322
1323 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1324 err = -EFAULT;
1325 goto out;
1326 }
1327
363429a0
ST		 1328 } else
1329 err = -EOPNOTSUPP;
1330
e7fee0f3
ST		 1331out:
1332 kfree(tvp);
13c97bf5
ST		 1333 return err;
1334}
1335
1336static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1337 unsigned int cmd, void *parg)
1338{
1339 struct dvb_device *dvbdev = file->private_data;
1340 struct dvb_frontend *fe = dvbdev->priv;
1341 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1342 int err = -EOPNOTSUPP;
1343
1da177e4
LT		 1344 switch (cmd) {
1345 case FE_GET_INFO: {
0c53c70f 1346 struct dvb_frontend_info* info = parg;
dea74869 1347 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
c471b331 1348 dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4
LT		 1349
1350 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
1351 * do it, it is done for it. */
1352 info->caps |= FE_CAN_INVERSION_AUTO;
1353 err = 0;
1354 break;
1355 }
1356
6757ccc5
PB		 1357 case FE_READ_STATUS: {
1358 fe_status_t* status = parg;
1359
1360 /* if retune was requested but hasn't occured yet, prevent
1361 * that user get signal state from previous tuning */
1362 if(fepriv->state == FESTATE_RETUNE) {
1363 err=0;
1364 *status = 0;
1365 break;
1366 }
1367
dea74869
PB		 1368 if (fe->ops.read_status)
1369 err = fe->ops.read_status(fe, status);
1da177e4 1370 break;
6757ccc5 1371 }
1da177e4 1372 case FE_READ_BER:
dea74869
PB		 1373 if (fe->ops.read_ber)
1374 err = fe->ops.read_ber(fe, (__u32*) parg);
1da177e4
LT		 1375 break;
1376
1377 case FE_READ_SIGNAL_STRENGTH:
dea74869
PB		 1378 if (fe->ops.read_signal_strength)
1379 err = fe->ops.read_signal_strength(fe, (__u16*) parg);
1da177e4
LT		 1380 break;
1381
1382 case FE_READ_SNR:
dea74869
PB		 1383 if (fe->ops.read_snr)
1384 err = fe->ops.read_snr(fe, (__u16*) parg);
1da177e4
LT		 1385 break;
1386
1387 case FE_READ_UNCORRECTED_BLOCKS:
dea74869
PB		 1388 if (fe->ops.read_ucblocks)
1389 err = fe->ops.read_ucblocks(fe, (__u32*) parg);
1da177e4
LT		 1390 break;
1391
1392
1393 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 1394 if (fe->ops.diseqc_reset_overload) {
1395 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 1396 fepriv->state = FESTATE_DISEQC;
1397 fepriv->status = 0;
1398 }
1399 break;
1400
1401 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 1402 if (fe->ops.diseqc_send_master_cmd) {
1403 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 1404 fepriv->state = FESTATE_DISEQC;
1405 fepriv->status = 0;
1406 }
1407 break;
1408
1409 case FE_DISEQC_SEND_BURST:
dea74869
PB		 1410 if (fe->ops.diseqc_send_burst) {
1411 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 1412 fepriv->state = FESTATE_DISEQC;
1413 fepriv->status = 0;
1414 }
1415 break;
1416
1417 case FE_SET_TONE:
dea74869
PB		 1418 if (fe->ops.set_tone) {
1419 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 1420 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 1421 fepriv->state = FESTATE_DISEQC;
1422 fepriv->status = 0;
1423 }
1424 break;
1425
1426 case FE_SET_VOLTAGE:
dea74869
PB		 1427 if (fe->ops.set_voltage) {
1428 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 1429 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 1430 fepriv->state = FESTATE_DISEQC;
1431 fepriv->status = 0;
1432 }
1433 break;
1434
1435 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 1436 if (fe->ops.dishnetwork_send_legacy_command) {
1437 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 1438 fepriv->state = FESTATE_DISEQC;
1439 fepriv->status = 0;
dea74869 1440 } else if (fe->ops.set_voltage) {
83b75b04
N		 1441 /*
1442 * NOTE: This is a fallback condition. Some frontends
1443 * (stv0299 for instance) take longer than 8msec to
1444 * respond to a set_voltage command. Those switches
1445 * need custom routines to switch properly. For all
1446 * other frontends, the following shoule work ok.
1447 * Dish network legacy switches (as used by Dish500)
1448 * are controlled by sending 9-bit command words
1449 * spaced 8msec apart.
1450 * the actual command word is switch/port dependant
1451 * so it is up to the userspace application to send
1452 * the right command.
1453 * The command must always start with a '0' after
1454 * initialization, so parg is 8 bits and does not
1455 * include the initialization or start bit
1456 */
c6eb8eaf 1457 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 1458 struct timeval nexttime;
1459 struct timeval tv[10];
1460 int i;
1461 u8 last = 1;
1462 if (dvb_frontend_debug)
c6eb8eaf 1463 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 1464 do_gettimeofday(&nexttime);
1465 if (dvb_frontend_debug)
1466 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
1467 /* before sending a command, initialize by sending
1468 * a 32ms 18V to the switch
1469 */
dea74869 1470 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 1471 dvb_frontend_sleep_until(&nexttime, 32000);
1472
1473 for (i = 0; i < 9; i++) {
1474 if (dvb_frontend_debug)
1475 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 1476 if ((swcmd & 0x01) != last) {
83b75b04 1477 /* set voltage to (last ? 13V : 18V) */
dea74869 1478 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 1479 last = (last) ? 0 : 1;
1480 }
c6eb8eaf 1481 swcmd = swcmd >> 1;
83b75b04
N		 1482 if (i != 8)
1483 dvb_frontend_sleep_until(&nexttime, 8000);
1484 }
1485 if (dvb_frontend_debug) {
1486 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 1487 __func__, fe->dvb->num);
83b75b04
N		 1488 for (i = 1; i < 10; i++)
1489 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
1490 }
1491 err = 0;
1492 fepriv->state = FESTATE_DISEQC;
1493 fepriv->status = 0;
1da177e4
LT		 1494 }
1495 break;
1496
1497 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 1498 if (fe->ops.diseqc_recv_slave_reply)
1499 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 1500 break;
1501
1502 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 1503 if (fe->ops.enable_high_lnb_voltage)
1504 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 1505 break;
1506
1507 case FE_SET_FRONTEND: {
1508 struct dvb_frontend_tune_settings fetunesettings;
1509
e7fee0f3 1510 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf
ST		 1511 if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) {
1512 err = -EINVAL;
1513 break;
1514 }
1515 } else {
1516 if (dvb_frontend_check_parameters(fe, parg) < 0) {
1517 err = -EINVAL;
1518 break;
1519 }
1fab46f0 1520
6b73eeaf
ST		 1521 memcpy (&fepriv->parameters, parg,
1522 sizeof (struct dvb_frontend_parameters));
1d78cac4 1523 dtv_property_cache_sync(fe, &fepriv->parameters);
6b73eeaf 1524 }
1da177e4
LT		 1525
1526 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
1527 memcpy(&fetunesettings.parameters, parg,
1528 sizeof (struct dvb_frontend_parameters));
1529
1530 /* force auto frequency inversion if requested */
1531 if (dvb_force_auto_inversion) {
1532 fepriv->parameters.inversion = INVERSION_AUTO;
1533 fetunesettings.parameters.inversion = INVERSION_AUTO;
1534 }
dea74869 1535 if (fe->ops.info.type == FE_OFDM) {
1b3c3714 1536 /* without hierarchical coding code_rate_LP is irrelevant,
1da177e4
LT		 1537 * so we tolerate the otherwise invalid FEC_NONE setting */
1538 if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
1539 fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE)
1540 fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
1541 }
1542
1543 /* get frontend-specific tuning settings */
dea74869 1544 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
1da177e4
LT		 1545 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
1546 fepriv->max_drift = fetunesettings.max_drift;
1547 fepriv->step_size = fetunesettings.step_size;
1548 } else {
1549 /* default values */
dea74869 1550 switch(fe->ops.info.type) {
1da177e4
LT		 1551 case FE_QPSK:
1552 fepriv->min_delay = HZ/20;
1553 fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000;
1554 fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000;
1555 break;
1556
1557 case FE_QAM:
1558 fepriv->min_delay = HZ/20;
1559 fepriv->step_size = 0; /* no zigzag */
1560 fepriv->max_drift = 0;
1561 break;
1562
1563 case FE_OFDM:
1564 fepriv->min_delay = HZ/20;
dea74869
PB		 1565 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
1566 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
1da177e4
LT		 1567 break;
1568 case FE_ATSC:
4821fb1d
MA		 1569 fepriv->min_delay = HZ/20;
1570 fepriv->step_size = 0;
1571 fepriv->max_drift = 0;
1da177e4
LT		 1572 break;
1573 }
1574 }
1575 if (dvb_override_tune_delay > 0)
1576 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
1577
1578 fepriv->state = FESTATE_RETUNE;
1579 dvb_frontend_wakeup(fe);
1580 dvb_frontend_add_event(fe, 0);
1581 fepriv->status = 0;
1582 err = 0;
1583 break;
1584 }
1585
1586 case FE_GET_EVENT:
1587 err = dvb_frontend_get_event (fe, parg, file->f_flags);
1588 break;
1589
1590 case FE_GET_FRONTEND:
dea74869 1591 if (fe->ops.get_frontend) {
1da177e4 1592 memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters));
dea74869 1593 err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg);
1da177e4
LT		 1594 }
1595 break;
36cb557a
AQ		 1596
1597 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 1598 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 1599 err = 0;
36cb557a 1600 break;
1da177e4
LT		 1601 };
1602
1da177e4
LT		 1603 return err;
1604}
1605
6b73eeaf 1606
1da177e4
LT		 1607static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
1608{
1609 struct dvb_device *dvbdev = file->private_data;
1610 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1611 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 1612
46b4f7c1 1613 dprintk ("%s\n", __func__);
1da177e4
LT		 1614
1615 poll_wait (file, &fepriv->events.wait_queue, wait);
1616
1617 if (fepriv->events.eventw != fepriv->events.eventr)
1618 return (POLLIN | POLLRDNORM | POLLPRI);
1619
1620 return 0;
1621}
1622
1623static int dvb_frontend_open(struct inode *inode, struct file *file)
1624{
1625 struct dvb_device *dvbdev = file->private_data;
1626 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1627 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1628 int ret;
1629
46b4f7c1 1630 dprintk ("%s\n", __func__);
1da177e4 1631
48136e1e
OE		 1632 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
1633 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
ba7e6f3e 1634 return ret;
ba7e6f3e
ST		 1635 }
1636
48136e1e
OE		 1637 if ((ret = dvb_generic_open (inode, file)) < 0)
1638 goto err1;
04c56d0e 1639
48136e1e 1640 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 1641 /* normal tune mode when opened R/W */
1642 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
1643 fepriv->tone = -1;
1644 fepriv->voltage = -1;
1645
1da177e4
LT		 1646 ret = dvb_frontend_start (fe);
1647 if (ret)
48136e1e 1648 goto err2;
1da177e4
LT		 1649
1650 /* empty event queue */
1651 fepriv->events.eventr = fepriv->events.eventw = 0;
1652 }
1653
1654 return ret;
48136e1e
OE		 1655
1656err2:
1657 dvb_generic_release(inode, file);
1658err1:
1659 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
1660 fe->ops.ts_bus_ctrl(fe, 0);
1661 return ret;
1da177e4
LT		 1662}
1663
1664static int dvb_frontend_release(struct inode *inode, struct file *file)
1665{
1666 struct dvb_device *dvbdev = file->private_data;
1667 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1668 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 1669 int ret;
1da177e4 1670
46b4f7c1 1671 dprintk ("%s\n", __func__);
1da177e4
LT		 1672
1673 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
1674 fepriv->release_jiffies = jiffies;
1675
ca5be9cd
MR		 1676 ret = dvb_generic_release (inode, file);
1677
48136e1e
OE		 1678 if (dvbdev->users == -1) {
1679 if (fepriv->exit == 1) {
1680 fops_put(file->f_op);
1681 file->f_op = NULL;
1682 wake_up(&dvbdev->wait_queue);
1683 }
1684 if (fe->ops.ts_bus_ctrl)
1685 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 1686 }
48136e1e 1687
ca5be9cd 1688 return ret;
1da177e4
LT		 1689}
1690
1691static struct file_operations dvb_frontend_fops = {
1692 .owner = THIS_MODULE,
1693 .ioctl = dvb_generic_ioctl,
1694 .poll = dvb_frontend_poll,
1695 .open = dvb_frontend_open,
1696 .release = dvb_frontend_release
1697};
1698
1699int dvb_register_frontend(struct dvb_adapter* dvb,
1700 struct dvb_frontend* fe)
1701{
1702 struct dvb_frontend_private *fepriv;
1703 static const struct dvb_device dvbdev_template = {
1704 .users = ~0,
1705 .writers = 1,
1706 .readers = (~0)-1,
1707 .fops = &dvb_frontend_fops,
1708 .kernel_ioctl = dvb_frontend_ioctl
1709 };
1710
46b4f7c1 1711 dprintk ("%s\n", __func__);
1da177e4 1712
3593cab5 1713 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 1714 return -ERESTARTSYS;
1715
7408187d 1716 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 1717 if (fe->frontend_priv == NULL) {
3593cab5 1718 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1719 return -ENOMEM;
1720 }
0c53c70f 1721 fepriv = fe->frontend_priv;
1da177e4
LT		 1722
1723 init_MUTEX (&fepriv->sem);
1724 init_waitqueue_head (&fepriv->wait_queue);
1725 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 1726 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 1727 fe->dvb = dvb;
1728 fepriv->inversion = INVERSION_OFF;
1729
1730 printk ("DVB: registering frontend %i (%s)...\n",
1731 fe->dvb->num,
dea74869 1732 fe->ops.info.name);
1da177e4
LT		 1733
1734 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
1735 fe, DVB_DEVICE_FRONTEND);
1736
3593cab5 1737 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1738 return 0;
1739}
1740EXPORT_SYMBOL(dvb_register_frontend);
1741
1742int dvb_unregister_frontend(struct dvb_frontend* fe)
1743{
0c53c70f 1744 struct dvb_frontend_private *fepriv = fe->frontend_priv;
46b4f7c1 1745 dprintk ("%s\n", __func__);
1da177e4 1746
57861b43 1747 mutex_lock(&frontend_mutex);
ca5be9cd 1748 dvb_frontend_stop (fe);
57861b43
MR		 1749 mutex_unlock(&frontend_mutex);
1750
1751 if (fepriv->dvbdev->users < -1)
1752 wait_event(fepriv->dvbdev->wait_queue,
1753 fepriv->dvbdev->users==-1);
1754
3593cab5 1755 mutex_lock(&frontend_mutex);
1da177e4 1756 dvb_unregister_device (fepriv->dvbdev);
d9955060 1757
1da177e4
LT		 1758 /* fe is invalid now */
1759 kfree(fepriv);
3593cab5 1760 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1761 return 0;
1762}
1763EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 1764
149ef72d 1765#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 1766void dvb_frontend_detach(struct dvb_frontend* fe)
1767{
1768 void *ptr;
1769
1770 if (fe->ops.release_sec) {
1771 fe->ops.release_sec(fe);
1772 symbol_put_addr(fe->ops.release_sec);
1773 }
1774 if (fe->ops.tuner_ops.release) {
1775 fe->ops.tuner_ops.release(fe);
1776 symbol_put_addr(fe->ops.tuner_ops.release);
1777 }
2426a27e
MK		 1778 if (fe->ops.analog_ops.release) {
1779 fe->ops.analog_ops.release(fe);
1780 symbol_put_addr(fe->ops.analog_ops.release);
1781 }
f52a838b
AQ		 1782 ptr = (void*)fe->ops.release;
1783 if (ptr) {
1784 fe->ops.release(fe);
1785 symbol_put_addr(ptr);
1786 }
1787}
1788#else
1789void dvb_frontend_detach(struct dvb_frontend* fe)
1790{
1791 if (fe->ops.release_sec)
1792 fe->ops.release_sec(fe);
1793 if (fe->ops.tuner_ops.release)
1794 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 1795 if (fe->ops.analog_ops.release)
1796 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 1797 if (fe->ops.release)
1798 fe->ops.release(fe);
1799}
1800#endif
1801EXPORT_SYMBOL(dvb_frontend_detach);
Linux kernel - Deliverables
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