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V4L/DVB (9226): MFE: cx88: Reset cx22702 on hvr-3000/4000
[GitHub/mt8127/android_kernel_alcatel_ttab.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{
363c35fc 215 dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n",
1da177e4 216 fe->dvb->num,
363c35fc 217 fe->id,
dea74869
PB		 218 fe->ops.info.name);
219
220 if (fe->ops.init)
221 fe->ops.init(fe);
222 if (fe->ops.tuner_ops.init) {
223 fe->ops.tuner_ops.init(fe);
224 if (fe->ops.i2c_gate_ctrl)
225 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 226 }
1da177e4
LT		 227}
228
86f40cc3
AQ		 229void dvb_frontend_reinitialise(struct dvb_frontend *fe)
230{
231 struct dvb_frontend_private *fepriv = fe->frontend_priv;
232
233 fepriv->reinitialise = 1;
234 dvb_frontend_wakeup(fe);
235}
236EXPORT_SYMBOL(dvb_frontend_reinitialise);
237
36cb557a 238static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 239{
36cb557a 240 int q2;
1da177e4 241
46b4f7c1 242 dprintk ("%s\n", __func__);
1da177e4 243
36cb557a
AQ		 244 if (locked)
245 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
246 else
247 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 248
36cb557a
AQ		 249 q2 = fepriv->quality - 128;
250 q2 *= q2;
1da177e4 251
36cb557a 252 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 253}
254
255/**
256 * Performs automatic twiddling of frontend parameters.
257 *
258 * @param fe The frontend concerned.
259 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
260 * @returns Number of complete iterations that have been performed.
261 */
36cb557a 262static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 263{
264 int autoinversion;
265 int ready = 0;
0c53c70f 266 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 267 int original_inversion = fepriv->parameters.inversion;
268 u32 original_frequency = fepriv->parameters.frequency;
269
270 /* are we using autoinversion? */
dea74869 271 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
1da177e4
LT		 272 (fepriv->parameters.inversion == INVERSION_AUTO));
273
274 /* setup parameters correctly */
275 while(!ready) {
276 /* calculate the lnb_drift */
277 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
278
279 /* wrap the auto_step if we've exceeded the maximum drift */
280 if (fepriv->lnb_drift > fepriv->max_drift) {
281 fepriv->auto_step = 0;
282 fepriv->auto_sub_step = 0;
283 fepriv->lnb_drift = 0;
284 }
285
286 /* perform inversion and +/- zigzag */
287 switch(fepriv->auto_sub_step) {
288 case 0:
289 /* try with the current inversion and current drift setting */
290 ready = 1;
291 break;
292
293 case 1:
294 if (!autoinversion) break;
295
296 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
297 ready = 1;
298 break;
299
300 case 2:
301 if (fepriv->lnb_drift == 0) break;
302
303 fepriv->lnb_drift = -fepriv->lnb_drift;
304 ready = 1;
305 break;
306
307 case 3:
308 if (fepriv->lnb_drift == 0) break;
309 if (!autoinversion) break;
310
311 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
312 fepriv->lnb_drift = -fepriv->lnb_drift;
313 ready = 1;
314 break;
315
316 default:
317 fepriv->auto_step++;
318 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
319 break;
320 }
321
322 if (!ready) fepriv->auto_sub_step++;
323 }
324
325 /* if this attempt would hit where we started, indicate a complete
326 * iteration has occurred */
327 if ((fepriv->auto_step == fepriv->started_auto_step) &&
328 (fepriv->auto_sub_step == 0) && check_wrapped) {
329 return 1;
330 }
331
332 dprintk("%s: drift:%i inversion:%i auto_step:%i "
333 "auto_sub_step:%i started_auto_step:%i\n",
46b4f7c1 334 __func__, fepriv->lnb_drift, fepriv->inversion,
1da177e4
LT		 335 fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
336
337 /* set the frontend itself */
338 fepriv->parameters.frequency += fepriv->lnb_drift;
339 if (autoinversion)
340 fepriv->parameters.inversion = fepriv->inversion;
dea74869
PB		 341 if (fe->ops.set_frontend)
342 fe->ops.set_frontend(fe, &fepriv->parameters);
1da177e4
LT		 343
344 fepriv->parameters.frequency = original_frequency;
345 fepriv->parameters.inversion = original_inversion;
346
347 fepriv->auto_sub_step++;
348 return 0;
349}
350
36cb557a
AQ		 351static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
352{
30d9464c 353 fe_status_t s = 0;
36cb557a
AQ		 354 struct dvb_frontend_private *fepriv = fe->frontend_priv;
355
356 /* if we've got no parameters, just keep idling */
357 if (fepriv->state & FESTATE_IDLE) {
358 fepriv->delay = 3*HZ;
359 fepriv->quality = 0;
360 return;
361 }
362
363 /* in SCAN mode, we just set the frontend when asked and leave it alone */
364 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
365 if (fepriv->state & FESTATE_RETUNE) {
dea74869
PB		 366 if (fe->ops.set_frontend)
367 fe->ops.set_frontend(fe, &fepriv->parameters);
36cb557a
AQ		 368 fepriv->state = FESTATE_TUNED;
369 }
370 fepriv->delay = 3*HZ;
371 fepriv->quality = 0;
372 return;
373 }
374
375 /* get the frontend status */
376 if (fepriv->state & FESTATE_RETUNE) {
377 s = 0;
378 } else {
dea74869
PB		 379 if (fe->ops.read_status)
380 fe->ops.read_status(fe, &s);
36cb557a
AQ		 381 if (s != fepriv->status) {
382 dvb_frontend_add_event(fe, s);
383 fepriv->status = s;
384 }
385 }
386
387 /* if we're not tuned, and we have a lock, move to the TUNED state */
388 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
389 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
390 fepriv->state = FESTATE_TUNED;
391
392 /* if we're tuned, then we have determined the correct inversion */
dea74869 393 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
36cb557a
AQ		 394 (fepriv->parameters.inversion == INVERSION_AUTO)) {
395 fepriv->parameters.inversion = fepriv->inversion;
396 }
397 return;
398 }
399
400 /* if we are tuned already, check we're still locked */
401 if (fepriv->state & FESTATE_TUNED) {
402 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
403
404 /* we're tuned, and the lock is still good... */
405 if (s & FE_HAS_LOCK) {
406 return;
407 } else { /* if we _WERE_ tuned, but now don't have a lock */
408 fepriv->state = FESTATE_ZIGZAG_FAST;
409 fepriv->started_auto_step = fepriv->auto_step;
410 fepriv->check_wrapped = 0;
411 }
412 }
413
414 /* don't actually do anything if we're in the LOSTLOCK state,
415 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
416 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 417 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 418 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
419 return;
420 }
421
422 /* don't do anything if we're in the DISEQC state, since this
423 * might be someone with a motorized dish controlled by DISEQC.
424 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
425 if (fepriv->state & FESTATE_DISEQC) {
426 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
427 return;
428 }
429
430 /* if we're in the RETUNE state, set everything up for a brand
431 * new scan, keeping the current inversion setting, as the next
432 * tune is _very_ likely to require the same */
433 if (fepriv->state & FESTATE_RETUNE) {
434 fepriv->lnb_drift = 0;
435 fepriv->auto_step = 0;
436 fepriv->auto_sub_step = 0;
437 fepriv->started_auto_step = 0;
438 fepriv->check_wrapped = 0;
439 }
440
441 /* fast zigzag. */
442 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
443 fepriv->delay = fepriv->min_delay;
444
445 /* peform a tune */
446 if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) {
447 /* OK, if we've run out of trials at the fast speed.
448 * Drop back to slow for the _next_ attempt */
449 fepriv->state = FESTATE_SEARCHING_SLOW;
450 fepriv->started_auto_step = fepriv->auto_step;
451 return;
452 }
453 fepriv->check_wrapped = 1;
454
455 /* if we've just retuned, enter the ZIGZAG_FAST state.
456 * This ensures we cannot return from an
457 * FE_SET_FRONTEND ioctl before the first frontend tune
458 * occurs */
459 if (fepriv->state & FESTATE_RETUNE) {
460 fepriv->state = FESTATE_TUNING_FAST;
461 }
462 }
463
464 /* slow zigzag */
465 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
466 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
467
468 /* Note: don't bother checking for wrapping; we stay in this
469 * state until we get a lock */
470 dvb_frontend_swzigzag_autotune(fe, 0);
471 }
472}
473
1da177e4
LT		 474static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
475{
0c53c70f 476 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 477
478 if (fepriv->exit)
479 return 1;
480
481 if (fepriv->dvbdev->writers == 1)
cc89c229 482 if (time_after(jiffies, fepriv->release_jiffies +
36cb557a 483 dvb_shutdown_timeout * HZ))
1da177e4
LT		 484 return 1;
485
486 return 0;
487}
488
489static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
490{
0c53c70f 491 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 492
493 if (fepriv->wakeup) {
494 fepriv->wakeup = 0;
495 return 1;
496 }
497 return dvb_frontend_is_exiting(fe);
498}
499
500static void dvb_frontend_wakeup(struct dvb_frontend *fe)
501{
0c53c70f 502 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 503
504 fepriv->wakeup = 1;
505 wake_up_interruptible(&fepriv->wait_queue);
506}
507
1da177e4
LT		 508static int dvb_frontend_thread(void *data)
509{
0c53c70f
JS		 510 struct dvb_frontend *fe = data;
511 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 512 unsigned long timeout;
1da177e4 513 fe_status_t s;
36cb557a 514 struct dvb_frontend_parameters *params;
1da177e4 515
46b4f7c1 516 dprintk("%s\n", __func__);
1da177e4 517
36cb557a
AQ		 518 fepriv->check_wrapped = 0;
519 fepriv->quality = 0;
520 fepriv->delay = 3*HZ;
1da177e4 521 fepriv->status = 0;
1da177e4 522 fepriv->wakeup = 0;
04c56d0e
AQ		 523 fepriv->reinitialise = 0;
524
525 dvb_frontend_init(fe);
1da177e4 526
83144186 527 set_freezable();
1da177e4
LT		 528 while (1) {
529 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 530restart:
1da177e4 531 timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 532 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
533 || freezing(current),
8eec1429
HP		 534 fepriv->delay);
535
536 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4
LT		 537 /* got signal or quitting */
538 break;
539 }
540
8eec1429 541 if (try_to_freeze())
6591691b 542 goto restart;
1da177e4
LT		 543
544 if (down_interruptible(&fepriv->sem))
545 break;
546
86f40cc3
AQ		 547 if (fepriv->reinitialise) {
548 dvb_frontend_init(fe);
64454016 549 if (fepriv->tone != -1) {
dea74869 550 fe->ops.set_tone(fe, fepriv->tone);
64454016
AQ		 551 }
552 if (fepriv->voltage != -1) {
dea74869 553 fe->ops.set_voltage(fe, fepriv->voltage);
64454016 554 }
86f40cc3
AQ		 555 fepriv->reinitialise = 0;
556 }
557
36cb557a 558 /* do an iteration of the tuning loop */
d772bd03
MA		 559 if (fe->ops.get_frontend_algo) {
560 if (fe->ops.get_frontend_algo(fe) == FE_ALGO_HW) {
561 /* have we been asked to retune? */
562 params = NULL;
563 if (fepriv->state & FESTATE_RETUNE) {
564 params = &fepriv->parameters;
565 fepriv->state = FESTATE_TUNED;
566 }
567
568 fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
569 if (s != fepriv->status) {
570 dvb_frontend_add_event(fe, s);
571 fepriv->status = s;
572 }
70d90635
MA		 573 } else
574 dvb_frontend_swzigzag(fe);
4a4edcca
MA		 575 } else
576 dvb_frontend_swzigzag(fe);
1da177e4
LT		 577 }
578
608f62d6
OE		 579 if (dvb_powerdown_on_sleep) {
580 if (fe->ops.set_voltage)
581 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869
PB		 582 if (fe->ops.tuner_ops.sleep) {
583 fe->ops.tuner_ops.sleep(fe);
584 if (fe->ops.i2c_gate_ctrl)
585 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 586 }
dea74869
PB		 587 if (fe->ops.sleep)
588 fe->ops.sleep(fe);
1da177e4
LT		 589 }
590
8eec1429 591 fepriv->thread = NULL;
1da177e4
LT		 592 mb();
593
594 dvb_frontend_wakeup(fe);
595 return 0;
596}
597
598static void dvb_frontend_stop(struct dvb_frontend *fe)
599{
0c53c70f 600 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 601
46b4f7c1 602 dprintk ("%s\n", __func__);
1da177e4
LT		 603
604 fepriv->exit = 1;
605 mb();
606
8eec1429 607 if (!fepriv->thread)
1da177e4
LT		 608 return;
609
8eec1429 610 kthread_stop(fepriv->thread);
ca5be9cd 611
8eec1429 612 init_MUTEX (&fepriv->sem);
1da177e4
LT		 613 fepriv->state = FESTATE_IDLE;
614
615 /* paranoia check in case a signal arrived */
8eec1429
HP		 616 if (fepriv->thread)
617 printk("dvb_frontend_stop: warning: thread %p won't exit\n",
618 fepriv->thread);
1da177e4
LT		 619}
620
83b75b04
N		 621s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
622{
623 return ((curtime.tv_usec < lasttime.tv_usec) ?
624 1000000 - lasttime.tv_usec + curtime.tv_usec :
625 curtime.tv_usec - lasttime.tv_usec);
626}
627EXPORT_SYMBOL(timeval_usec_diff);
628
629static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
630{
631 curtime->tv_usec += add_usec;
632 if (curtime->tv_usec >= 1000000) {
633 curtime->tv_usec -= 1000000;
634 curtime->tv_sec++;
635 }
636}
637
638/*
639 * Sleep until gettimeofday() > waketime + add_usec
640 * This needs to be as precise as possible, but as the delay is
641 * usually between 2ms and 32ms, it is done using a scheduled msleep
642 * followed by usleep (normally a busy-wait loop) for the remainder
643 */
644void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
645{
646 struct timeval lasttime;
647 s32 delta, newdelta;
648
649 timeval_usec_add(waketime, add_usec);
650
651 do_gettimeofday(&lasttime);
652 delta = timeval_usec_diff(lasttime, *waketime);
653 if (delta > 2500) {
654 msleep((delta - 1500) / 1000);
655 do_gettimeofday(&lasttime);
656 newdelta = timeval_usec_diff(lasttime, *waketime);
657 delta = (newdelta > delta) ? 0 : newdelta;
658 }
659 if (delta > 0)
660 udelay(delta);
661}
662EXPORT_SYMBOL(dvb_frontend_sleep_until);
663
1da177e4
LT		 664static int dvb_frontend_start(struct dvb_frontend *fe)
665{
666 int ret;
0c53c70f 667 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 668 struct task_struct *fe_thread;
1da177e4 669
46b4f7c1 670 dprintk ("%s\n", __func__);
1da177e4 671
8eec1429 672 if (fepriv->thread) {
1da177e4
LT		 673 if (!fepriv->exit)
674 return 0;
675 else
676 dvb_frontend_stop (fe);
677 }
678
679 if (signal_pending(current))
680 return -EINTR;
681 if (down_interruptible (&fepriv->sem))
682 return -EINTR;
683
684 fepriv->state = FESTATE_IDLE;
685 fepriv->exit = 0;
8eec1429 686 fepriv->thread = NULL;
1da177e4
LT		 687 mb();
688
8eec1429 689 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 690 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 691 if (IS_ERR(fe_thread)) {
692 ret = PTR_ERR(fe_thread);
693 printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
1da177e4
LT		 694 up(&fepriv->sem);
695 return ret;
696 }
8eec1429 697 fepriv->thread = fe_thread;
1da177e4
LT		 698 return 0;
699}
700
c471b331
OE		 701static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
702 u32 *freq_min, u32 *freq_max)
703{
704 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
705
706 if (fe->ops.info.frequency_max == 0)
707 *freq_max = fe->ops.tuner_ops.info.frequency_max;
708 else if (fe->ops.tuner_ops.info.frequency_max == 0)
709 *freq_max = fe->ops.info.frequency_max;
710 else
711 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
712
713 if (*freq_min == 0 || *freq_max == 0)
363c35fc
ST		 714 printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
715 fe->dvb->num,fe->id);
c471b331
OE		 716}
717
1fab46f0
OE		 718static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
719 struct dvb_frontend_parameters *parms)
720{
c471b331
OE		 721 u32 freq_min;
722 u32 freq_max;
723
1fab46f0 724 /* range check: frequency */
c471b331
OE		 725 dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
726 if ((freq_min && parms->frequency < freq_min) ||
727 (freq_max && parms->frequency > freq_max)) {
363c35fc
ST		 728 printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
729 fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max);
1fab46f0
OE		 730 return -EINVAL;
731 }
732
733 /* range check: symbol rate */
734 if (fe->ops.info.type == FE_QPSK) {
735 if ((fe->ops.info.symbol_rate_min &&
736 parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
737 (fe->ops.info.symbol_rate_max &&
738 parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 739 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
740 fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate,
1fab46f0
OE		 741 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
742 return -EINVAL;
743 }
744
745 } else if (fe->ops.info.type == FE_QAM) {
746 if ((fe->ops.info.symbol_rate_min &&
747 parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
748 (fe->ops.info.symbol_rate_max &&
749 parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 750 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
751 fe->dvb->num, fe->id, parms->u.qam.symbol_rate,
1fab46f0
OE		 752 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
753 return -EINVAL;
754 }
755 }
756
757 return 0;
758}
759
56f0680a 760struct dtv_cmds_h dtv_cmds[] = {
e7fee0f3
ST		 761 [DTV_TUNE] = {
762 .name = "DTV_TUNE",
763 .cmd = DTV_TUNE,
6b73eeaf
ST		 764 .set = 1,
765 },
e7fee0f3
ST		 766 [DTV_CLEAR] = {
767 .name = "DTV_CLEAR",
768 .cmd = DTV_CLEAR,
6b73eeaf
ST		 769 .set = 1,
770 },
771
772 /* Set */
363429a0
ST		 773 [DTV_FREQUENCY] = {
774 .name = "DTV_FREQUENCY",
775 .cmd = DTV_FREQUENCY,
6b73eeaf
ST		 776 .set = 1,
777 },
75b7f943
ST		 778 [DTV_BANDWIDTH_HZ] = {
779 .name = "DTV_BANDWIDTH_HZ",
780 .cmd = DTV_BANDWIDTH_HZ,
6b73eeaf
ST		 781 .set = 1,
782 },
363429a0
ST		 783 [DTV_MODULATION] = {
784 .name = "DTV_MODULATION",
785 .cmd = DTV_MODULATION,
6b73eeaf
ST		 786 .set = 1,
787 },
363429a0
ST		 788 [DTV_INVERSION] = {
789 .name = "DTV_INVERSION",
790 .cmd = DTV_INVERSION,
6b73eeaf
ST		 791 .set = 1,
792 },
363429a0
ST		 793 [DTV_DISEQC_MASTER] = {
794 .name = "DTV_DISEQC_MASTER",
795 .cmd = DTV_DISEQC_MASTER,
6b73eeaf
ST		 796 .set = 1,
797 .buffer = 1,
798 },
363429a0
ST		 799 [DTV_SYMBOL_RATE] = {
800 .name = "DTV_SYMBOL_RATE",
801 .cmd = DTV_SYMBOL_RATE,
6b73eeaf
ST		 802 .set = 1,
803 },
363429a0
ST		 804 [DTV_INNER_FEC] = {
805 .name = "DTV_INNER_FEC",
806 .cmd = DTV_INNER_FEC,
6b73eeaf
ST		 807 .set = 1,
808 },
363429a0
ST		 809 [DTV_VOLTAGE] = {
810 .name = "DTV_VOLTAGE",
811 .cmd = DTV_VOLTAGE,
6b73eeaf
ST		 812 .set = 1,
813 },
363429a0
ST		 814 [DTV_TONE] = {
815 .name = "DTV_TONE",
816 .cmd = DTV_TONE,
6b73eeaf
ST		 817 .set = 1,
818 },
363429a0
ST		 819 [DTV_PILOT] = {
820 .name = "DTV_PILOT",
821 .cmd = DTV_PILOT,
6b73eeaf
ST		 822 .set = 1,
823 },
363429a0
ST		 824 [DTV_ROLLOFF] = {
825 .name = "DTV_ROLLOFF",
826 .cmd = DTV_ROLLOFF,
6b73eeaf
ST		 827 .set = 1,
828 },
363429a0
ST		 829 [DTV_DELIVERY_SYSTEM] = {
830 .name = "DTV_DELIVERY_SYSTEM",
831 .cmd = DTV_DELIVERY_SYSTEM,
6b73eeaf
ST		 832 .set = 1,
833 },
ef526f42
ST		 834 [DTV_HIERARCHY] = {
835 .name = "DTV_HIERARCHY",
836 .cmd = DTV_HIERARCHY,
837 .set = 1,
838 },
a4de91be
ST		 839 [DTV_CODE_RATE_HP] = {
840 .name = "DTV_CODE_RATE_HP",
841 .cmd = DTV_CODE_RATE_HP,
842 .set = 1,
843 },
844 [DTV_CODE_RATE_LP] = {
845 .name = "DTV_CODE_RATE_LP",
846 .cmd = DTV_CODE_RATE_LP,
847 .set = 1,
848 },
b87625f0
ST		 849 [DTV_GUARD_INTERVAL] = {
850 .name = "DTV_GUARD_INTERVAL",
851 .cmd = DTV_GUARD_INTERVAL,
852 .set = 1,
853 },
854 [DTV_TRANSMISSION_MODE] = {
855 .name = "DTV_TRANSMISSION_MODE",
856 .cmd = DTV_TRANSMISSION_MODE,
857 .set = 1,
858 },
6b73eeaf 859 /* Get */
363429a0
ST		 860 [DTV_DISEQC_SLAVE_REPLY] = {
861 .name = "DTV_DISEQC_SLAVE_REPLY",
862 .cmd = DTV_DISEQC_SLAVE_REPLY,
6b73eeaf
ST		 863 .set = 0,
864 .buffer = 1,
865 },
eacf8d8d
ST		 866 [DTV_API_VERSION] = {
867 .name = "DTV_API_VERSION",
868 .cmd = DTV_API_VERSION,
869 .set = 0,
870 },
a4de91be
ST		 871 [DTV_CODE_RATE_HP] = {
872 .name = "DTV_CODE_RATE_HP",
873 .cmd = DTV_CODE_RATE_HP,
874 .set = 0,
875 },
876 [DTV_CODE_RATE_LP] = {
877 .name = "DTV_CODE_RATE_LP",
878 .cmd = DTV_CODE_RATE_LP,
879 .set = 0,
880 },
b87625f0
ST		 881 [DTV_GUARD_INTERVAL] = {
882 .name = "DTV_GUARD_INTERVAL",
883 .cmd = DTV_GUARD_INTERVAL,
884 .set = 0,
885 },
886 [DTV_TRANSMISSION_MODE] = {
887 .name = "DTV_TRANSMISSION_MODE",
888 .cmd = DTV_TRANSMISSION_MODE,
889 .set = 0,
890 },
ef526f42
ST		 891 [DTV_HIERARCHY] = {
892 .name = "DTV_HIERARCHY",
893 .cmd = DTV_HIERARCHY,
894 .set = 0,
895 },
6b73eeaf
ST		 896};
897
e7fee0f3 898void dtv_property_dump(struct dtv_property *tvp)
6b73eeaf
ST		 899{
900 int i;
901
82d7669d 902 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
4aae8efb
DB		 903 printk("%s: tvp.cmd = 0x%08x (undefined/unknown/invalid)\n",
904 __func__, tvp->cmd);
905 return;
906 }
907
6b73eeaf
ST		 908 printk("%s() tvp.cmd = 0x%08x (%s)\n"
909 ,__FUNCTION__
910 ,tvp->cmd
56f0680a 911 ,dtv_cmds[ tvp->cmd ].name);
6b73eeaf 912
56f0680a 913 if(dtv_cmds[ tvp->cmd ].buffer) {
6b73eeaf
ST		 914
915 printk("%s() tvp.u.buffer.len = 0x%02x\n"
916 ,__FUNCTION__
917 ,tvp->u.buffer.len);
918
919 for(i = 0; i < tvp->u.buffer.len; i++)
920 printk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
921 ,__FUNCTION__
922 ,i
923 ,tvp->u.buffer.data[i]);
924
925 } else
926 printk("%s() tvp.u.data = 0x%08x\n", __FUNCTION__, tvp->u.data);
927}
928
929int is_legacy_delivery_system(fe_delivery_system_t s)
930{
931 if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
932 (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS))
933 return 1;
934
935 return 0;
936}
937
ee33c525
ST		 938/* Synchronise the legacy tuning parameters into the cache, so that demodulator
939 * drivers can use a single set_frontend tuning function, regardless of whether
940 * it's being used for the legacy or new API, reducing code and complexity.
941 */
942void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
943{
944 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
945
d5748f10
ST		 946 printk("%s()\n", __FUNCTION__);
947
ee33c525
ST		 948 c->frequency = p->frequency;
949 c->inversion = p->inversion;
950
951 switch (fe->ops.info.type) {
952 case FE_QPSK:
e5cefa82
DB		 953 c->modulation = QPSK; /* implied for DVB-S in legacy API */
954 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
ee33c525
ST		 955 c->symbol_rate = p->u.qpsk.symbol_rate;
956 c->fec_inner = p->u.qpsk.fec_inner;
80a773c9 957 c->delivery_system = SYS_DVBS;
ee33c525
ST		 958 break;
959 case FE_QAM:
960 c->symbol_rate = p->u.qam.symbol_rate;
961 c->fec_inner = p->u.qam.fec_inner;
962 c->modulation = p->u.qam.modulation;
80a773c9 963 c->delivery_system = SYS_DVBC_ANNEX_AC;
ee33c525
ST		 964 break;
965 case FE_OFDM:
75b7f943
ST		 966 if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
967 c->bandwidth_hz = 6000000;
968 else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
969 c->bandwidth_hz = 7000000;
970 else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
971 c->bandwidth_hz = 8000000;
972 else
973 /* Including BANDWIDTH_AUTO */
974 c->bandwidth_hz = 0;
ee33c525
ST		 975 c->code_rate_HP = p->u.ofdm.code_rate_HP;
976 c->code_rate_LP = p->u.ofdm.code_rate_LP;
977 c->modulation = p->u.ofdm.constellation;
978 c->transmission_mode = p->u.ofdm.transmission_mode;
979 c->guard_interval = p->u.ofdm.guard_interval;
980 c->hierarchy = p->u.ofdm.hierarchy_information;
80a773c9 981 c->delivery_system = SYS_DVBT;
ee33c525
ST		 982 break;
983 case FE_ATSC:
984 c->modulation = p->u.vsb.modulation;
80a773c9
ST		 985 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
986 c->delivery_system = SYS_ATSC;
987 else
988 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525
ST		 989 break;
990 }
991}
992
d5748f10
ST		 993/* Ensure the cached values are set correctly in the frontend
994 * legacy tuning structures, for the advanced tuning API.
995 */
996void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
6b73eeaf 997{
d5748f10
ST		 998 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
999 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1000 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1001
d5748f10 1002 printk("%s()\n", __FUNCTION__);
6b73eeaf 1003
d5748f10
ST		 1004 p->frequency = c->frequency;
1005 p->inversion = c->inversion;
6b73eeaf 1006
d5748f10
ST		 1007 switch (fe->ops.info.type) {
1008 case FE_QPSK:
1009 printk("%s() Preparing QPSK req\n", __FUNCTION__);
1010 p->u.qpsk.symbol_rate = c->symbol_rate;
1011 p->u.qpsk.fec_inner = c->fec_inner;
80a773c9 1012 c->delivery_system = SYS_DVBS;
d5748f10
ST		 1013 break;
1014 case FE_QAM:
1015 printk("%s() Preparing QAM req\n", __FUNCTION__);
1016 p->u.qam.symbol_rate = c->symbol_rate;
1017 p->u.qam.fec_inner = c->fec_inner;
1018 p->u.qam.modulation = c->modulation;
80a773c9 1019 c->delivery_system = SYS_DVBC_ANNEX_AC;
d5748f10
ST		 1020 break;
1021 case FE_OFDM:
1022 printk("%s() Preparing OFDM req\n", __FUNCTION__);
75b7f943
ST		 1023 if (c->bandwidth_hz == 6000000)
1024 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1025 else if (c->bandwidth_hz == 7000000)
1026 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1027 else if (c->bandwidth_hz == 8000000)
1028 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
1029 else
1030 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 1031 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1032 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1033 p->u.ofdm.constellation = c->modulation;
1034 p->u.ofdm.transmission_mode = c->transmission_mode;
1035 p->u.ofdm.guard_interval = c->guard_interval;
1036 p->u.ofdm.hierarchy_information = c->hierarchy;
80a773c9 1037 c->delivery_system = SYS_DVBT;
d5748f10
ST		 1038 break;
1039 case FE_ATSC:
1040 printk("%s() Preparing VSB req\n", __FUNCTION__);
1041 p->u.vsb.modulation = c->modulation;
80a773c9
ST		 1042 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1043 c->delivery_system = SYS_ATSC;
1044 else
1045 c->delivery_system = SYS_DVBC_ANNEX_B;
d5748f10
ST		 1046 break;
1047 }
1048}
1049
1050/* Ensure the cached values are set correctly in the frontend
1051 * legacy tuning structures, for the legacy tuning API.
1052 */
1053void dtv_property_adv_params_sync(struct dvb_frontend *fe)
1054{
56f0680a 1055 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1056 struct dvb_frontend_private *fepriv = fe->frontend_priv;
d5748f10 1057 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf
ST		 1058
1059 printk("%s()\n", __FUNCTION__);
1060
d5748f10
ST		 1061 p->frequency = c->frequency;
1062 p->inversion = c->inversion;
1063
1064 switch(c->modulation) {
0a6393ae
ST		 1065 case PSK_8:
1066 case APSK_16:
97854829 1067 case APSK_32:
0a6393ae 1068 case QPSK:
d5748f10
ST		 1069 p->u.qpsk.symbol_rate = c->symbol_rate;
1070 p->u.qpsk.fec_inner = c->fec_inner;
1071 break;
1072 default:
1073 break;
1074 }
1075
1076 if(c->delivery_system == SYS_ISDBT) {
1077 /* Fake out a generic DVB-T request so we pass validation in the ioctl */
1078 p->frequency = c->frequency;
1079 p->inversion = INVERSION_AUTO;
1080 p->u.ofdm.constellation = QAM_AUTO;
1081 p->u.ofdm.code_rate_HP = FEC_AUTO;
1082 p->u.ofdm.code_rate_LP = FEC_AUTO;
1083 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
1084 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
1085 p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
1086 p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
1087 }
1088}
1089
1090void dtv_property_cache_submit(struct dvb_frontend *fe)
1091{
1092 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1093
1094 printk("%s()\n", __FUNCTION__);
1095
1096 /* For legacy delivery systems we don't need the delivery_system to
1097 * be specified, but we populate the older structures from the cache
1098 * so we can call set_frontend on older drivers.
1099 */
6b73eeaf 1100 if(is_legacy_delivery_system(c->delivery_system)) {
6b73eeaf 1101
d5748f10
ST		 1102 printk("%s() legacy, modulation = %d\n", __FUNCTION__, c->modulation);
1103 dtv_property_legacy_params_sync(fe);
6b73eeaf 1104
6b73eeaf 1105 } else {
d5748f10
ST		 1106 printk("%s() adv, modulation = %d\n", __FUNCTION__, c->modulation);
1107
6b73eeaf
ST		 1108 /* For advanced delivery systems / modulation types ...
1109 * we seed the lecacy dvb_frontend_parameters structure
1110 * so that the sanity checking code later in the IOCTL processing
1111 * can validate our basic frequency ranges, symbolrates, modulation
1112 * etc.
1113 */
d5748f10 1114 dtv_property_adv_params_sync(fe);
6b73eeaf 1115 }
6b73eeaf
ST		 1116}
1117
13c97bf5
ST		 1118static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1119 unsigned int cmd, void *parg);
1120static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1121 unsigned int cmd, void *parg);
1122
363429a0
ST		 1123int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp,
1124 struct inode *inode, struct file *file)
1125{
1126 int r = 0;
1127
1128 printk("%s()\n", __FUNCTION__);
1129
1130 dtv_property_dump(tvp);
1131
bfbf2dae
ST		 1132 /* Allow the frontend to validate incoming properties */
1133 if (fe->ops.get_property)
1134 r = fe->ops.get_property(fe, tvp);
1135
1136 if (r < 0)
1137 return r;
1138
363429a0
ST		 1139 switch(tvp->cmd) {
1140 case DTV_FREQUENCY:
1141 tvp->u.data = fe->dtv_property_cache.frequency;
1142 break;
1143 case DTV_MODULATION:
1144 tvp->u.data = fe->dtv_property_cache.modulation;
1145 break;
75b7f943
ST		 1146 case DTV_BANDWIDTH_HZ:
1147 tvp->u.data = fe->dtv_property_cache.bandwidth_hz;
363429a0
ST		 1148 break;
1149 case DTV_INVERSION:
1150 tvp->u.data = fe->dtv_property_cache.inversion;
1151 break;
1152 case DTV_SYMBOL_RATE:
1153 tvp->u.data = fe->dtv_property_cache.symbol_rate;
1154 break;
1155 case DTV_INNER_FEC:
1156 tvp->u.data = fe->dtv_property_cache.fec_inner;
1157 break;
1158 case DTV_PILOT:
1159 tvp->u.data = fe->dtv_property_cache.pilot;
1160 break;
1161 case DTV_ROLLOFF:
1162 tvp->u.data = fe->dtv_property_cache.rolloff;
1163 break;
1164 case DTV_DELIVERY_SYSTEM:
1165 tvp->u.data = fe->dtv_property_cache.delivery_system;
1166 break;
363429a0
ST		 1167 case DTV_VOLTAGE:
1168 tvp->u.data = fe->dtv_property_cache.voltage;
1169 break;
1170 case DTV_TONE:
1171 tvp->u.data = fe->dtv_property_cache.sectone;
1172 break;
eacf8d8d
ST		 1173 case DTV_API_VERSION:
1174 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1175 break;
a4de91be
ST		 1176 case DTV_CODE_RATE_HP:
1177 tvp->u.data = fe->dtv_property_cache.code_rate_HP;
1178 break;
1179 case DTV_CODE_RATE_LP:
1180 tvp->u.data = fe->dtv_property_cache.code_rate_LP;
1181 break;
b87625f0
ST		 1182 case DTV_GUARD_INTERVAL:
1183 tvp->u.data = fe->dtv_property_cache.guard_interval;
1184 break;
1185 case DTV_TRANSMISSION_MODE:
1186 tvp->u.data = fe->dtv_property_cache.transmission_mode;
1187 break;
ef526f42
ST		 1188 case DTV_HIERARCHY:
1189 tvp->u.data = fe->dtv_property_cache.hierarchy;
1190 break;
363429a0
ST		 1191 default:
1192 r = -1;
1193 }
1194
1195 return r;
1196}
1197
1198int dtv_property_process_set(struct dvb_frontend *fe, struct dtv_property *tvp,
13c97bf5 1199 struct inode *inode, struct file *file)
6b73eeaf
ST		 1200{
1201 int r = 0;
13c97bf5 1202 struct dvb_frontend_private *fepriv = fe->frontend_priv;
6b73eeaf 1203 printk("%s()\n", __FUNCTION__);
56f0680a 1204 dtv_property_dump(tvp);
6b73eeaf 1205
bfbf2dae
ST		 1206 /* Allow the frontend to validate incoming properties */
1207 if (fe->ops.set_property)
1208 r = fe->ops.set_property(fe, tvp);
1209
1210 if (r < 0)
1211 return r;
1212
6b73eeaf 1213 switch(tvp->cmd) {
e7fee0f3 1214 case DTV_CLEAR:
6b73eeaf
ST		 1215 /* Reset a cache of data specific to the frontend here. This does
1216 * not effect hardware.
1217 */
1218 printk("%s() Flushing property cache\n", __FUNCTION__);
56f0680a 1219 memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties));
e7fee0f3 1220 fe->dtv_property_cache.state = tvp->cmd;
56f0680a 1221 fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;
6b73eeaf 1222 break;
e7fee0f3 1223 case DTV_TUNE:
6b73eeaf 1224 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1225 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1226 * ioctl.
6b73eeaf 1227 */
e7fee0f3 1228 fe->dtv_property_cache.state = tvp->cmd;
6b73eeaf 1229 printk("%s() Finalised property cache\n", __FUNCTION__);
d5748f10
ST		 1230 dtv_property_cache_submit(fe);
1231
13c97bf5
ST		 1232 r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
1233 &fepriv->parameters);
6b73eeaf 1234 break;
363429a0 1235 case DTV_FREQUENCY:
56f0680a 1236 fe->dtv_property_cache.frequency = tvp->u.data;
6b73eeaf 1237 break;
363429a0 1238 case DTV_MODULATION:
56f0680a 1239 fe->dtv_property_cache.modulation = tvp->u.data;
6b73eeaf 1240 break;
75b7f943
ST		 1241 case DTV_BANDWIDTH_HZ:
1242 fe->dtv_property_cache.bandwidth_hz = tvp->u.data;
6b73eeaf 1243 break;
363429a0 1244 case DTV_INVERSION:
56f0680a 1245 fe->dtv_property_cache.inversion = tvp->u.data;
6b73eeaf 1246 break;
363429a0 1247 case DTV_SYMBOL_RATE:
56f0680a 1248 fe->dtv_property_cache.symbol_rate = tvp->u.data;
6b73eeaf 1249 break;
363429a0 1250 case DTV_INNER_FEC:
56f0680a 1251 fe->dtv_property_cache.fec_inner = tvp->u.data;
6b73eeaf 1252 break;
363429a0 1253 case DTV_PILOT:
56f0680a 1254 fe->dtv_property_cache.pilot = tvp->u.data;
6b73eeaf 1255 break;
363429a0 1256 case DTV_ROLLOFF:
56f0680a 1257 fe->dtv_property_cache.rolloff = tvp->u.data;
6b73eeaf 1258 break;
363429a0 1259 case DTV_DELIVERY_SYSTEM:
56f0680a 1260 fe->dtv_property_cache.delivery_system = tvp->u.data;
6b73eeaf 1261 break;
363429a0 1262 case DTV_VOLTAGE:
56f0680a 1263 fe->dtv_property_cache.voltage = tvp->u.data;
13c97bf5 1264 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE,
56f0680a 1265 (void *)fe->dtv_property_cache.voltage);
13c97bf5 1266 break;
363429a0 1267 case DTV_TONE:
56f0680a 1268 fe->dtv_property_cache.sectone = tvp->u.data;
13c97bf5 1269 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE,
56f0680a 1270 (void *)fe->dtv_property_cache.sectone);
13c97bf5 1271 break;
a4de91be
ST		 1272 case DTV_CODE_RATE_HP:
1273 fe->dtv_property_cache.code_rate_HP = tvp->u.data;
1274 break;
1275 case DTV_CODE_RATE_LP:
1276 fe->dtv_property_cache.code_rate_LP = tvp->u.data;
1277 break;
b87625f0
ST		 1278 case DTV_GUARD_INTERVAL:
1279 fe->dtv_property_cache.guard_interval = tvp->u.data;
1280 break;
1281 case DTV_TRANSMISSION_MODE:
1282 fe->dtv_property_cache.transmission_mode = tvp->u.data;
1283 break;
ef526f42
ST		 1284 case DTV_HIERARCHY:
1285 fe->dtv_property_cache.hierarchy = tvp->u.data;
1286 break;
363429a0
ST		 1287 default:
1288 r = -1;
6b73eeaf
ST		 1289 }
1290
13c97bf5 1291 return r;
6b73eeaf
ST		 1292}
1293
1da177e4
LT		 1294static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
1295 unsigned int cmd, void *parg)
1296{
1297 struct dvb_device *dvbdev = file->private_data;
1298 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1299 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1300 int err = -EOPNOTSUPP;
1301
46b4f7c1 1302 dprintk ("%s\n", __func__);
1da177e4 1303
813ce47c 1304 if (fepriv->exit)
1da177e4
LT		 1305 return -ENODEV;
1306
1307 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1308 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1309 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1310 return -EPERM;
1311
1312 if (down_interruptible (&fepriv->sem))
1313 return -ERESTARTSYS;
1314
13c97bf5
ST		 1315 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
1316 err = dvb_frontend_ioctl_properties(inode, file, cmd, parg);
4dd88bec
ST		 1317 else {
1318 fe->dtv_property_cache.state = DTV_UNDEFINED;
13c97bf5 1319 err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg);
4dd88bec 1320 }
13c97bf5
ST		 1321
1322 up(&fepriv->sem);
1323 return err;
1324}
1325
1326static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1327 unsigned int cmd, void *parg)
1328{
1329 struct dvb_device *dvbdev = file->private_data;
1330 struct dvb_frontend *fe = dvbdev->priv;
e6f9ec86 1331 int err = 0;
e7fee0f3
ST		 1332
1333 struct dtv_properties *tvps = NULL;
1334 struct dtv_property *tvp = NULL;
1335 int i;
13c97bf5
ST		 1336
1337 dprintk("%s\n", __func__);
1338
6b73eeaf
ST		 1339 if(cmd == FE_SET_PROPERTY) {
1340 printk("%s() FE_SET_PROPERTY\n", __FUNCTION__);
1341
e7fee0f3 1342 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1343
e7fee0f3
ST		 1344 printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num);
1345 printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props);
1346
1347 /* Put an arbitrary limit on the number of messages that can
1348 * be sent at once */
6068f506 1349 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 1350 return -EINVAL;
1351
1352 tvp = (struct dtv_property *) kmalloc(tvps->num *
1353 sizeof(struct dtv_property), GFP_KERNEL);
1354 if (!tvp) {
1355 err = -ENOMEM;
1356 goto out;
6b73eeaf
ST		 1357 }
1358
e7fee0f3
ST		 1359 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1360 err = -EFAULT;
1361 goto out;
1362 }
1363
d48cb402
ST		 1364 for (i = 0; i < tvps->num; i++) {
1365 (tvp + i)->result = dtv_property_process_set(fe, tvp + i, inode, file);
1366 err |= (tvp + i)->result;
1367 }
e7fee0f3
ST		 1368
1369 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf 1370 printk("%s() Property cache is full, tuning\n", __FUNCTION__);
6b73eeaf 1371 }
bfbf2dae 1372
363429a0
ST		 1373 } else
1374 if(cmd == FE_GET_PROPERTY) {
1375 printk("%s() FE_GET_PROPERTY\n", __FUNCTION__);
1376
1377 tvps = (struct dtv_properties __user *)parg;
1378
1379 printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num);
1380 printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props);
1381
1382 /* Put an arbitrary limit on the number of messages that can
1383 * be sent at once */
6068f506 1384 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 1385 return -EINVAL;
1386
1387 tvp = (struct dtv_property *) kmalloc(tvps->num *
1388 sizeof(struct dtv_property), GFP_KERNEL);
1389 if (!tvp) {
1390 err = -ENOMEM;
1391 goto out;
1392 }
1393
1394 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1395 err = -EFAULT;
1396 goto out;
1397 }
1398
d48cb402
ST		 1399 for (i = 0; i < tvps->num; i++) {
1400 (tvp + i)->result = dtv_property_process_get(fe, tvp + i, inode, file);
1401 err |= (tvp + i)->result;
1402 }
363429a0
ST		 1403
1404 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1405 err = -EFAULT;
1406 goto out;
1407 }
1408
363429a0
ST		 1409 } else
1410 err = -EOPNOTSUPP;
1411
e7fee0f3
ST		 1412out:
1413 kfree(tvp);
13c97bf5
ST		 1414 return err;
1415}
1416
1417static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1418 unsigned int cmd, void *parg)
1419{
1420 struct dvb_device *dvbdev = file->private_data;
1421 struct dvb_frontend *fe = dvbdev->priv;
1422 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1423 int err = -EOPNOTSUPP;
1424
1da177e4
LT		 1425 switch (cmd) {
1426 case FE_GET_INFO: {
0c53c70f 1427 struct dvb_frontend_info* info = parg;
dea74869 1428 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
c471b331 1429 dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4
LT		 1430
1431 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
1432 * do it, it is done for it. */
1433 info->caps |= FE_CAN_INVERSION_AUTO;
1434 err = 0;
1435 break;
1436 }
1437
6757ccc5
PB		 1438 case FE_READ_STATUS: {
1439 fe_status_t* status = parg;
1440
1441 /* if retune was requested but hasn't occured yet, prevent
1442 * that user get signal state from previous tuning */
1443 if(fepriv->state == FESTATE_RETUNE) {
1444 err=0;
1445 *status = 0;
1446 break;
1447 }
1448
dea74869
PB		 1449 if (fe->ops.read_status)
1450 err = fe->ops.read_status(fe, status);
1da177e4 1451 break;
6757ccc5 1452 }
1da177e4 1453 case FE_READ_BER:
dea74869
PB		 1454 if (fe->ops.read_ber)
1455 err = fe->ops.read_ber(fe, (__u32*) parg);
1da177e4
LT		 1456 break;
1457
1458 case FE_READ_SIGNAL_STRENGTH:
dea74869
PB		 1459 if (fe->ops.read_signal_strength)
1460 err = fe->ops.read_signal_strength(fe, (__u16*) parg);
1da177e4
LT		 1461 break;
1462
1463 case FE_READ_SNR:
dea74869
PB		 1464 if (fe->ops.read_snr)
1465 err = fe->ops.read_snr(fe, (__u16*) parg);
1da177e4
LT		 1466 break;
1467
1468 case FE_READ_UNCORRECTED_BLOCKS:
dea74869
PB		 1469 if (fe->ops.read_ucblocks)
1470 err = fe->ops.read_ucblocks(fe, (__u32*) parg);
1da177e4
LT		 1471 break;
1472
1473
1474 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 1475 if (fe->ops.diseqc_reset_overload) {
1476 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 1477 fepriv->state = FESTATE_DISEQC;
1478 fepriv->status = 0;
1479 }
1480 break;
1481
1482 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 1483 if (fe->ops.diseqc_send_master_cmd) {
1484 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 1485 fepriv->state = FESTATE_DISEQC;
1486 fepriv->status = 0;
1487 }
1488 break;
1489
1490 case FE_DISEQC_SEND_BURST:
dea74869
PB		 1491 if (fe->ops.diseqc_send_burst) {
1492 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 1493 fepriv->state = FESTATE_DISEQC;
1494 fepriv->status = 0;
1495 }
1496 break;
1497
1498 case FE_SET_TONE:
dea74869
PB		 1499 if (fe->ops.set_tone) {
1500 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 1501 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 1502 fepriv->state = FESTATE_DISEQC;
1503 fepriv->status = 0;
1504 }
1505 break;
1506
1507 case FE_SET_VOLTAGE:
dea74869
PB		 1508 if (fe->ops.set_voltage) {
1509 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 1510 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 1511 fepriv->state = FESTATE_DISEQC;
1512 fepriv->status = 0;
1513 }
1514 break;
1515
1516 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 1517 if (fe->ops.dishnetwork_send_legacy_command) {
1518 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 1519 fepriv->state = FESTATE_DISEQC;
1520 fepriv->status = 0;
dea74869 1521 } else if (fe->ops.set_voltage) {
83b75b04
N		 1522 /*
1523 * NOTE: This is a fallback condition. Some frontends
1524 * (stv0299 for instance) take longer than 8msec to
1525 * respond to a set_voltage command. Those switches
1526 * need custom routines to switch properly. For all
1527 * other frontends, the following shoule work ok.
1528 * Dish network legacy switches (as used by Dish500)
1529 * are controlled by sending 9-bit command words
1530 * spaced 8msec apart.
1531 * the actual command word is switch/port dependant
1532 * so it is up to the userspace application to send
1533 * the right command.
1534 * The command must always start with a '0' after
1535 * initialization, so parg is 8 bits and does not
1536 * include the initialization or start bit
1537 */
c6eb8eaf 1538 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 1539 struct timeval nexttime;
1540 struct timeval tv[10];
1541 int i;
1542 u8 last = 1;
1543 if (dvb_frontend_debug)
c6eb8eaf 1544 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 1545 do_gettimeofday(&nexttime);
1546 if (dvb_frontend_debug)
1547 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
1548 /* before sending a command, initialize by sending
1549 * a 32ms 18V to the switch
1550 */
dea74869 1551 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 1552 dvb_frontend_sleep_until(&nexttime, 32000);
1553
1554 for (i = 0; i < 9; i++) {
1555 if (dvb_frontend_debug)
1556 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 1557 if ((swcmd & 0x01) != last) {
83b75b04 1558 /* set voltage to (last ? 13V : 18V) */
dea74869 1559 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 1560 last = (last) ? 0 : 1;
1561 }
c6eb8eaf 1562 swcmd = swcmd >> 1;
83b75b04
N		 1563 if (i != 8)
1564 dvb_frontend_sleep_until(&nexttime, 8000);
1565 }
1566 if (dvb_frontend_debug) {
1567 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 1568 __func__, fe->dvb->num);
83b75b04
N		 1569 for (i = 1; i < 10; i++)
1570 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
1571 }
1572 err = 0;
1573 fepriv->state = FESTATE_DISEQC;
1574 fepriv->status = 0;
1da177e4
LT		 1575 }
1576 break;
1577
1578 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 1579 if (fe->ops.diseqc_recv_slave_reply)
1580 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 1581 break;
1582
1583 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 1584 if (fe->ops.enable_high_lnb_voltage)
1585 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 1586 break;
1587
1588 case FE_SET_FRONTEND: {
1589 struct dvb_frontend_tune_settings fetunesettings;
1590
e7fee0f3 1591 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf
ST		 1592 if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) {
1593 err = -EINVAL;
1594 break;
1595 }
1596 } else {
1597 if (dvb_frontend_check_parameters(fe, parg) < 0) {
1598 err = -EINVAL;
1599 break;
1600 }
1fab46f0 1601
6b73eeaf
ST		 1602 memcpy (&fepriv->parameters, parg,
1603 sizeof (struct dvb_frontend_parameters));
1d78cac4 1604 dtv_property_cache_sync(fe, &fepriv->parameters);
6b73eeaf 1605 }
1da177e4
LT		 1606
1607 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
1608 memcpy(&fetunesettings.parameters, parg,
1609 sizeof (struct dvb_frontend_parameters));
1610
1611 /* force auto frequency inversion if requested */
1612 if (dvb_force_auto_inversion) {
1613 fepriv->parameters.inversion = INVERSION_AUTO;
1614 fetunesettings.parameters.inversion = INVERSION_AUTO;
1615 }
dea74869 1616 if (fe->ops.info.type == FE_OFDM) {
1b3c3714 1617 /* without hierarchical coding code_rate_LP is irrelevant,
1da177e4
LT		 1618 * so we tolerate the otherwise invalid FEC_NONE setting */
1619 if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
1620 fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE)
1621 fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
1622 }
1623
1624 /* get frontend-specific tuning settings */
dea74869 1625 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
1da177e4
LT		 1626 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
1627 fepriv->max_drift = fetunesettings.max_drift;
1628 fepriv->step_size = fetunesettings.step_size;
1629 } else {
1630 /* default values */
dea74869 1631 switch(fe->ops.info.type) {
1da177e4
LT		 1632 case FE_QPSK:
1633 fepriv->min_delay = HZ/20;
1634 fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000;
1635 fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000;
1636 break;
1637
1638 case FE_QAM:
1639 fepriv->min_delay = HZ/20;
1640 fepriv->step_size = 0; /* no zigzag */
1641 fepriv->max_drift = 0;
1642 break;
1643
1644 case FE_OFDM:
1645 fepriv->min_delay = HZ/20;
dea74869
PB		 1646 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
1647 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
1da177e4
LT		 1648 break;
1649 case FE_ATSC:
4821fb1d
MA		 1650 fepriv->min_delay = HZ/20;
1651 fepriv->step_size = 0;
1652 fepriv->max_drift = 0;
1da177e4
LT		 1653 break;
1654 }
1655 }
1656 if (dvb_override_tune_delay > 0)
1657 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
1658
1659 fepriv->state = FESTATE_RETUNE;
1660 dvb_frontend_wakeup(fe);
1661 dvb_frontend_add_event(fe, 0);
1662 fepriv->status = 0;
1663 err = 0;
1664 break;
1665 }
1666
1667 case FE_GET_EVENT:
1668 err = dvb_frontend_get_event (fe, parg, file->f_flags);
1669 break;
1670
1671 case FE_GET_FRONTEND:
dea74869 1672 if (fe->ops.get_frontend) {
1da177e4 1673 memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters));
dea74869 1674 err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg);
1da177e4
LT		 1675 }
1676 break;
36cb557a
AQ		 1677
1678 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 1679 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 1680 err = 0;
36cb557a 1681 break;
1da177e4
LT		 1682 };
1683
1da177e4
LT		 1684 return err;
1685}
1686
6b73eeaf 1687
1da177e4
LT		 1688static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
1689{
1690 struct dvb_device *dvbdev = file->private_data;
1691 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1692 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 1693
46b4f7c1 1694 dprintk ("%s\n", __func__);
1da177e4
LT		 1695
1696 poll_wait (file, &fepriv->events.wait_queue, wait);
1697
1698 if (fepriv->events.eventw != fepriv->events.eventr)
1699 return (POLLIN | POLLRDNORM | POLLPRI);
1700
1701 return 0;
1702}
1703
1704static int dvb_frontend_open(struct inode *inode, struct file *file)
1705{
1706 struct dvb_device *dvbdev = file->private_data;
1707 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1708 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1709 int ret;
1710
46b4f7c1 1711 dprintk ("%s\n", __func__);
1da177e4 1712
48136e1e
OE		 1713 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
1714 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
ba7e6f3e 1715 return ret;
ba7e6f3e
ST		 1716 }
1717
48136e1e
OE		 1718 if ((ret = dvb_generic_open (inode, file)) < 0)
1719 goto err1;
04c56d0e 1720
48136e1e 1721 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 1722 /* normal tune mode when opened R/W */
1723 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
1724 fepriv->tone = -1;
1725 fepriv->voltage = -1;
1726
1da177e4
LT		 1727 ret = dvb_frontend_start (fe);
1728 if (ret)
48136e1e 1729 goto err2;
1da177e4
LT		 1730
1731 /* empty event queue */
1732 fepriv->events.eventr = fepriv->events.eventw = 0;
1733 }
1734
1735 return ret;
48136e1e
OE		 1736
1737err2:
1738 dvb_generic_release(inode, file);
1739err1:
1740 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
1741 fe->ops.ts_bus_ctrl(fe, 0);
1742 return ret;
1da177e4
LT		 1743}
1744
1745static int dvb_frontend_release(struct inode *inode, struct file *file)
1746{
1747 struct dvb_device *dvbdev = file->private_data;
1748 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1749 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 1750 int ret;
1da177e4 1751
46b4f7c1 1752 dprintk ("%s\n", __func__);
1da177e4
LT		 1753
1754 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
1755 fepriv->release_jiffies = jiffies;
1756
ca5be9cd
MR		 1757 ret = dvb_generic_release (inode, file);
1758
48136e1e
OE		 1759 if (dvbdev->users == -1) {
1760 if (fepriv->exit == 1) {
1761 fops_put(file->f_op);
1762 file->f_op = NULL;
1763 wake_up(&dvbdev->wait_queue);
1764 }
1765 if (fe->ops.ts_bus_ctrl)
1766 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 1767 }
48136e1e 1768
ca5be9cd 1769 return ret;
1da177e4
LT		 1770}
1771
1772static struct file_operations dvb_frontend_fops = {
1773 .owner = THIS_MODULE,
1774 .ioctl = dvb_generic_ioctl,
1775 .poll = dvb_frontend_poll,
1776 .open = dvb_frontend_open,
1777 .release = dvb_frontend_release
1778};
1779
1780int dvb_register_frontend(struct dvb_adapter* dvb,
1781 struct dvb_frontend* fe)
1782{
1783 struct dvb_frontend_private *fepriv;
1784 static const struct dvb_device dvbdev_template = {
1785 .users = ~0,
1786 .writers = 1,
1787 .readers = (~0)-1,
1788 .fops = &dvb_frontend_fops,
1789 .kernel_ioctl = dvb_frontend_ioctl
1790 };
1791
46b4f7c1 1792 dprintk ("%s\n", __func__);
1da177e4 1793
3593cab5 1794 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 1795 return -ERESTARTSYS;
1796
7408187d 1797 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 1798 if (fe->frontend_priv == NULL) {
3593cab5 1799 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1800 return -ENOMEM;
1801 }
0c53c70f 1802 fepriv = fe->frontend_priv;
1da177e4
LT		 1803
1804 init_MUTEX (&fepriv->sem);
1805 init_waitqueue_head (&fepriv->wait_queue);
1806 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 1807 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 1808 fe->dvb = dvb;
1809 fepriv->inversion = INVERSION_OFF;
1810
363c35fc 1811 printk ("DVB: registering adapter %i frontend %i (%s)...\n",
1da177e4 1812 fe->dvb->num,
363c35fc 1813 fe->id,
dea74869 1814 fe->ops.info.name);
1da177e4
LT		 1815
1816 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
1817 fe, DVB_DEVICE_FRONTEND);
1818
3593cab5 1819 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1820 return 0;
1821}
1822EXPORT_SYMBOL(dvb_register_frontend);
1823
1824int dvb_unregister_frontend(struct dvb_frontend* fe)
1825{
0c53c70f 1826 struct dvb_frontend_private *fepriv = fe->frontend_priv;
46b4f7c1 1827 dprintk ("%s\n", __func__);
1da177e4 1828
57861b43 1829 mutex_lock(&frontend_mutex);
ca5be9cd 1830 dvb_frontend_stop (fe);
57861b43
MR		 1831 mutex_unlock(&frontend_mutex);
1832
1833 if (fepriv->dvbdev->users < -1)
1834 wait_event(fepriv->dvbdev->wait_queue,
1835 fepriv->dvbdev->users==-1);
1836
3593cab5 1837 mutex_lock(&frontend_mutex);
1da177e4 1838 dvb_unregister_device (fepriv->dvbdev);
d9955060 1839
1da177e4
LT		 1840 /* fe is invalid now */
1841 kfree(fepriv);
3593cab5 1842 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1843 return 0;
1844}
1845EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 1846
149ef72d 1847#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 1848void dvb_frontend_detach(struct dvb_frontend* fe)
1849{
1850 void *ptr;
1851
1852 if (fe->ops.release_sec) {
1853 fe->ops.release_sec(fe);
1854 symbol_put_addr(fe->ops.release_sec);
1855 }
1856 if (fe->ops.tuner_ops.release) {
1857 fe->ops.tuner_ops.release(fe);
1858 symbol_put_addr(fe->ops.tuner_ops.release);
1859 }
2426a27e
MK		 1860 if (fe->ops.analog_ops.release) {
1861 fe->ops.analog_ops.release(fe);
1862 symbol_put_addr(fe->ops.analog_ops.release);
1863 }
f52a838b
AQ		 1864 ptr = (void*)fe->ops.release;
1865 if (ptr) {
1866 fe->ops.release(fe);
1867 symbol_put_addr(ptr);
1868 }
1869}
1870#else
1871void dvb_frontend_detach(struct dvb_frontend* fe)
1872{
1873 if (fe->ops.release_sec)
1874 fe->ops.release_sec(fe);
1875 if (fe->ops.tuner_ops.release)
1876 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 1877 if (fe->ops.analog_ops.release)
1878 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 1879 if (fe->ops.release)
1880 fe->ops.release(fe);
1881}
1882#endif
1883EXPORT_SYMBOL(dvb_frontend_detach);
kernel source for telekom puls (alcatel/mediatek)