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V4L/DVB (9337b): remove tuner-3036 and dpc7146 drivers from feature-removal-schedule.txt
[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;
59b1842d 50static int dvb_mfe_wait_time = 5;
1da177e4
LT		 51
52module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 53MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 54module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 55MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 56module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 57MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 58module_param(dvb_override_tune_delay, int, 0644);
1da177e4 59MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 60module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 61MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 62module_param(dvb_mfe_wait_time, int, 0644);
63MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
1da177e4
LT		 64
65#define dprintk if (dvb_frontend_debug) printk
66
67#define FESTATE_IDLE 1
68#define FESTATE_RETUNE 2
69#define FESTATE_TUNING_FAST 4
70#define FESTATE_TUNING_SLOW 8
71#define FESTATE_TUNED 16
72#define FESTATE_ZIGZAG_FAST 32
73#define FESTATE_ZIGZAG_SLOW 64
74#define FESTATE_DISEQC 128
75#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
76#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
77#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
78#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16
MA		 79
80#define FE_ALGO_HW 1
1da177e4
LT		 81/*
82 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
83 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
84 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
85 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
86 * FESTATE_TUNED. The frontend has successfully locked on.
87 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
88 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
89 * FESTATE_DISEQC. A DISEQC command has just been issued.
90 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
91 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
92 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
93 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
94 */
95
3593cab5 96static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 97
98struct dvb_frontend_private {
99
36cb557a 100 /* thread/frontend values */
1da177e4
LT		 101 struct dvb_device *dvbdev;
102 struct dvb_frontend_parameters parameters;
103 struct dvb_fe_events events;
104 struct semaphore sem;
105 struct list_head list_head;
106 wait_queue_head_t wait_queue;
8eec1429 107 struct task_struct *thread;
1da177e4 108 unsigned long release_jiffies;
36cb557a
AQ		 109 unsigned int exit;
110 unsigned int wakeup;
1da177e4 111 fe_status_t status;
400b7083 112 unsigned long tune_mode_flags;
36cb557a 113 unsigned int delay;
86f40cc3 114 unsigned int reinitialise;
64454016
AQ		 115 int tone;
116 int voltage;
36cb557a
AQ		 117
118 /* swzigzag values */
119 unsigned int state;
120 unsigned int bending;
121 int lnb_drift;
122 unsigned int inversion;
123 unsigned int auto_step;
124 unsigned int auto_sub_step;
125 unsigned int started_auto_step;
126 unsigned int min_delay;
127 unsigned int max_drift;
128 unsigned int step_size;
129 int quality;
130 unsigned int check_wrapped;
1da177e4
LT		 131};
132
86f40cc3 133static void dvb_frontend_wakeup(struct dvb_frontend *fe);
1da177e4
LT		 134
135static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
136{
0c53c70f 137 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 138 struct dvb_fe_events *events = &fepriv->events;
139 struct dvb_frontend_event *e;
140 int wp;
141
46b4f7c1 142 dprintk ("%s\n", __func__);
1da177e4 143
03b76123 144 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 145 return;
146
147 wp = (events->eventw + 1) % MAX_EVENT;
148
149 if (wp == events->eventr) {
150 events->overflow = 1;
151 events->eventr = (events->eventr + 1) % MAX_EVENT;
152 }
153
154 e = &events->events[events->eventw];
155
156 memcpy (&e->parameters, &fepriv->parameters,
157 sizeof (struct dvb_frontend_parameters));
158
159 if (status & FE_HAS_LOCK)
dea74869
PB		 160 if (fe->ops.get_frontend)
161 fe->ops.get_frontend(fe, &e->parameters);
1da177e4
LT		 162
163 events->eventw = wp;
164
03b76123 165 mutex_unlock(&events->mtx);
1da177e4
LT		 166
167 e->status = status;
168
169 wake_up_interruptible (&events->wait_queue);
170}
171
172static int dvb_frontend_get_event(struct dvb_frontend *fe,
173 struct dvb_frontend_event *event, int flags)
174{
0c53c70f 175 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 176 struct dvb_fe_events *events = &fepriv->events;
177
46b4f7c1 178 dprintk ("%s\n", __func__);
1da177e4
LT		 179
180 if (events->overflow) {
181 events->overflow = 0;
182 return -EOVERFLOW;
183 }
184
185 if (events->eventw == events->eventr) {
186 int ret;
187
188 if (flags & O_NONBLOCK)
189 return -EWOULDBLOCK;
190
191 up(&fepriv->sem);
192
193 ret = wait_event_interruptible (events->wait_queue,
194 events->eventw != events->eventr);
195
196 if (down_interruptible (&fepriv->sem))
197 return -ERESTARTSYS;
198
199 if (ret < 0)
200 return ret;
201 }
202
03b76123 203 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 204 return -ERESTARTSYS;
205
206 memcpy (event, &events->events[events->eventr],
207 sizeof(struct dvb_frontend_event));
208
209 events->eventr = (events->eventr + 1) % MAX_EVENT;
210
03b76123 211 mutex_unlock(&events->mtx);
1da177e4
LT		 212
213 return 0;
214}
215
216static void dvb_frontend_init(struct dvb_frontend *fe)
217{
363c35fc 218 dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n",
1da177e4 219 fe->dvb->num,
363c35fc 220 fe->id,
dea74869
PB		 221 fe->ops.info.name);
222
223 if (fe->ops.init)
224 fe->ops.init(fe);
225 if (fe->ops.tuner_ops.init) {
226 fe->ops.tuner_ops.init(fe);
227 if (fe->ops.i2c_gate_ctrl)
228 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 229 }
1da177e4
LT		 230}
231
86f40cc3
AQ		 232void dvb_frontend_reinitialise(struct dvb_frontend *fe)
233{
234 struct dvb_frontend_private *fepriv = fe->frontend_priv;
235
236 fepriv->reinitialise = 1;
237 dvb_frontend_wakeup(fe);
238}
239EXPORT_SYMBOL(dvb_frontend_reinitialise);
240
36cb557a 241static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 242{
36cb557a 243 int q2;
1da177e4 244
46b4f7c1 245 dprintk ("%s\n", __func__);
1da177e4 246
36cb557a
AQ		 247 if (locked)
248 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
249 else
250 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 251
36cb557a
AQ		 252 q2 = fepriv->quality - 128;
253 q2 *= q2;
1da177e4 254
36cb557a 255 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 256}
257
258/**
259 * Performs automatic twiddling of frontend parameters.
260 *
261 * @param fe The frontend concerned.
262 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
263 * @returns Number of complete iterations that have been performed.
264 */
36cb557a 265static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 266{
267 int autoinversion;
268 int ready = 0;
0c53c70f 269 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 270 int original_inversion = fepriv->parameters.inversion;
271 u32 original_frequency = fepriv->parameters.frequency;
272
273 /* are we using autoinversion? */
dea74869 274 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
1da177e4
LT		 275 (fepriv->parameters.inversion == INVERSION_AUTO));
276
277 /* setup parameters correctly */
278 while(!ready) {
279 /* calculate the lnb_drift */
280 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
281
282 /* wrap the auto_step if we've exceeded the maximum drift */
283 if (fepriv->lnb_drift > fepriv->max_drift) {
284 fepriv->auto_step = 0;
285 fepriv->auto_sub_step = 0;
286 fepriv->lnb_drift = 0;
287 }
288
289 /* perform inversion and +/- zigzag */
290 switch(fepriv->auto_sub_step) {
291 case 0:
292 /* try with the current inversion and current drift setting */
293 ready = 1;
294 break;
295
296 case 1:
297 if (!autoinversion) break;
298
299 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
300 ready = 1;
301 break;
302
303 case 2:
304 if (fepriv->lnb_drift == 0) break;
305
306 fepriv->lnb_drift = -fepriv->lnb_drift;
307 ready = 1;
308 break;
309
310 case 3:
311 if (fepriv->lnb_drift == 0) break;
312 if (!autoinversion) break;
313
314 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
315 fepriv->lnb_drift = -fepriv->lnb_drift;
316 ready = 1;
317 break;
318
319 default:
320 fepriv->auto_step++;
321 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
322 break;
323 }
324
325 if (!ready) fepriv->auto_sub_step++;
326 }
327
328 /* if this attempt would hit where we started, indicate a complete
329 * iteration has occurred */
330 if ((fepriv->auto_step == fepriv->started_auto_step) &&
331 (fepriv->auto_sub_step == 0) && check_wrapped) {
332 return 1;
333 }
334
335 dprintk("%s: drift:%i inversion:%i auto_step:%i "
336 "auto_sub_step:%i started_auto_step:%i\n",
46b4f7c1 337 __func__, fepriv->lnb_drift, fepriv->inversion,
1da177e4
LT		 338 fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
339
340 /* set the frontend itself */
341 fepriv->parameters.frequency += fepriv->lnb_drift;
342 if (autoinversion)
343 fepriv->parameters.inversion = fepriv->inversion;
dea74869
PB		 344 if (fe->ops.set_frontend)
345 fe->ops.set_frontend(fe, &fepriv->parameters);
1da177e4
LT		 346
347 fepriv->parameters.frequency = original_frequency;
348 fepriv->parameters.inversion = original_inversion;
349
350 fepriv->auto_sub_step++;
351 return 0;
352}
353
36cb557a
AQ		 354static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
355{
30d9464c 356 fe_status_t s = 0;
36cb557a
AQ		 357 struct dvb_frontend_private *fepriv = fe->frontend_priv;
358
359 /* if we've got no parameters, just keep idling */
360 if (fepriv->state & FESTATE_IDLE) {
361 fepriv->delay = 3*HZ;
362 fepriv->quality = 0;
363 return;
364 }
365
366 /* in SCAN mode, we just set the frontend when asked and leave it alone */
367 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
368 if (fepriv->state & FESTATE_RETUNE) {
dea74869
PB		 369 if (fe->ops.set_frontend)
370 fe->ops.set_frontend(fe, &fepriv->parameters);
36cb557a
AQ		 371 fepriv->state = FESTATE_TUNED;
372 }
373 fepriv->delay = 3*HZ;
374 fepriv->quality = 0;
375 return;
376 }
377
378 /* get the frontend status */
379 if (fepriv->state & FESTATE_RETUNE) {
380 s = 0;
381 } else {
dea74869
PB		 382 if (fe->ops.read_status)
383 fe->ops.read_status(fe, &s);
36cb557a
AQ		 384 if (s != fepriv->status) {
385 dvb_frontend_add_event(fe, s);
386 fepriv->status = s;
387 }
388 }
389
390 /* if we're not tuned, and we have a lock, move to the TUNED state */
391 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
392 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
393 fepriv->state = FESTATE_TUNED;
394
395 /* if we're tuned, then we have determined the correct inversion */
dea74869 396 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
36cb557a
AQ		 397 (fepriv->parameters.inversion == INVERSION_AUTO)) {
398 fepriv->parameters.inversion = fepriv->inversion;
399 }
400 return;
401 }
402
403 /* if we are tuned already, check we're still locked */
404 if (fepriv->state & FESTATE_TUNED) {
405 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
406
407 /* we're tuned, and the lock is still good... */
408 if (s & FE_HAS_LOCK) {
409 return;
410 } else { /* if we _WERE_ tuned, but now don't have a lock */
411 fepriv->state = FESTATE_ZIGZAG_FAST;
412 fepriv->started_auto_step = fepriv->auto_step;
413 fepriv->check_wrapped = 0;
414 }
415 }
416
417 /* don't actually do anything if we're in the LOSTLOCK state,
418 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
419 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 420 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 421 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
422 return;
423 }
424
425 /* don't do anything if we're in the DISEQC state, since this
426 * might be someone with a motorized dish controlled by DISEQC.
427 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
428 if (fepriv->state & FESTATE_DISEQC) {
429 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
430 return;
431 }
432
433 /* if we're in the RETUNE state, set everything up for a brand
434 * new scan, keeping the current inversion setting, as the next
435 * tune is _very_ likely to require the same */
436 if (fepriv->state & FESTATE_RETUNE) {
437 fepriv->lnb_drift = 0;
438 fepriv->auto_step = 0;
439 fepriv->auto_sub_step = 0;
440 fepriv->started_auto_step = 0;
441 fepriv->check_wrapped = 0;
442 }
443
444 /* fast zigzag. */
445 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
446 fepriv->delay = fepriv->min_delay;
447
448 /* peform a tune */
449 if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) {
450 /* OK, if we've run out of trials at the fast speed.
451 * Drop back to slow for the _next_ attempt */
452 fepriv->state = FESTATE_SEARCHING_SLOW;
453 fepriv->started_auto_step = fepriv->auto_step;
454 return;
455 }
456 fepriv->check_wrapped = 1;
457
458 /* if we've just retuned, enter the ZIGZAG_FAST state.
459 * This ensures we cannot return from an
460 * FE_SET_FRONTEND ioctl before the first frontend tune
461 * occurs */
462 if (fepriv->state & FESTATE_RETUNE) {
463 fepriv->state = FESTATE_TUNING_FAST;
464 }
465 }
466
467 /* slow zigzag */
468 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
469 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
470
471 /* Note: don't bother checking for wrapping; we stay in this
472 * state until we get a lock */
473 dvb_frontend_swzigzag_autotune(fe, 0);
474 }
475}
476
1da177e4
LT		 477static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
478{
0c53c70f 479 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 480
481 if (fepriv->exit)
482 return 1;
483
484 if (fepriv->dvbdev->writers == 1)
cc89c229 485 if (time_after(jiffies, fepriv->release_jiffies +
36cb557a 486 dvb_shutdown_timeout * HZ))
1da177e4
LT		 487 return 1;
488
489 return 0;
490}
491
492static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
493{
0c53c70f 494 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 495
496 if (fepriv->wakeup) {
497 fepriv->wakeup = 0;
498 return 1;
499 }
500 return dvb_frontend_is_exiting(fe);
501}
502
503static void dvb_frontend_wakeup(struct dvb_frontend *fe)
504{
0c53c70f 505 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 506
507 fepriv->wakeup = 1;
508 wake_up_interruptible(&fepriv->wait_queue);
509}
510
1da177e4
LT		 511static int dvb_frontend_thread(void *data)
512{
0c53c70f
JS		 513 struct dvb_frontend *fe = data;
514 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 515 unsigned long timeout;
1da177e4 516 fe_status_t s;
36cb557a 517 struct dvb_frontend_parameters *params;
1da177e4 518
46b4f7c1 519 dprintk("%s\n", __func__);
1da177e4 520
36cb557a
AQ		 521 fepriv->check_wrapped = 0;
522 fepriv->quality = 0;
523 fepriv->delay = 3*HZ;
1da177e4 524 fepriv->status = 0;
1da177e4 525 fepriv->wakeup = 0;
04c56d0e
AQ		 526 fepriv->reinitialise = 0;
527
528 dvb_frontend_init(fe);
1da177e4 529
83144186 530 set_freezable();
1da177e4
LT		 531 while (1) {
532 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 533restart:
1da177e4 534 timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 535 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
536 || freezing(current),
8eec1429
HP		 537 fepriv->delay);
538
539 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4
LT		 540 /* got signal or quitting */
541 break;
542 }
543
8eec1429 544 if (try_to_freeze())
6591691b 545 goto restart;
1da177e4
LT		 546
547 if (down_interruptible(&fepriv->sem))
548 break;
549
86f40cc3
AQ		 550 if (fepriv->reinitialise) {
551 dvb_frontend_init(fe);
64454016 552 if (fepriv->tone != -1) {
dea74869 553 fe->ops.set_tone(fe, fepriv->tone);
64454016
AQ		 554 }
555 if (fepriv->voltage != -1) {
dea74869 556 fe->ops.set_voltage(fe, fepriv->voltage);
64454016 557 }
86f40cc3
AQ		 558 fepriv->reinitialise = 0;
559 }
560
36cb557a 561 /* do an iteration of the tuning loop */
d772bd03
MA		 562 if (fe->ops.get_frontend_algo) {
563 if (fe->ops.get_frontend_algo(fe) == FE_ALGO_HW) {
564 /* have we been asked to retune? */
565 params = NULL;
566 if (fepriv->state & FESTATE_RETUNE) {
567 params = &fepriv->parameters;
568 fepriv->state = FESTATE_TUNED;
569 }
570
571 fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
572 if (s != fepriv->status) {
573 dvb_frontend_add_event(fe, s);
574 fepriv->status = s;
575 }
70d90635
MA		 576 } else
577 dvb_frontend_swzigzag(fe);
4a4edcca
MA		 578 } else
579 dvb_frontend_swzigzag(fe);
1da177e4
LT		 580 }
581
608f62d6
OE		 582 if (dvb_powerdown_on_sleep) {
583 if (fe->ops.set_voltage)
584 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869
PB		 585 if (fe->ops.tuner_ops.sleep) {
586 fe->ops.tuner_ops.sleep(fe);
587 if (fe->ops.i2c_gate_ctrl)
588 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 589 }
dea74869
PB		 590 if (fe->ops.sleep)
591 fe->ops.sleep(fe);
1da177e4
LT		 592 }
593
8eec1429 594 fepriv->thread = NULL;
1da177e4
LT		 595 mb();
596
597 dvb_frontend_wakeup(fe);
598 return 0;
599}
600
601static void dvb_frontend_stop(struct dvb_frontend *fe)
602{
0c53c70f 603 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 604
46b4f7c1 605 dprintk ("%s\n", __func__);
1da177e4
LT		 606
607 fepriv->exit = 1;
608 mb();
609
8eec1429 610 if (!fepriv->thread)
1da177e4
LT		 611 return;
612
8eec1429 613 kthread_stop(fepriv->thread);
ca5be9cd 614
8eec1429 615 init_MUTEX (&fepriv->sem);
1da177e4
LT		 616 fepriv->state = FESTATE_IDLE;
617
618 /* paranoia check in case a signal arrived */
8eec1429
HP		 619 if (fepriv->thread)
620 printk("dvb_frontend_stop: warning: thread %p won't exit\n",
621 fepriv->thread);
1da177e4
LT		 622}
623
83b75b04
N		 624s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
625{
626 return ((curtime.tv_usec < lasttime.tv_usec) ?
627 1000000 - lasttime.tv_usec + curtime.tv_usec :
628 curtime.tv_usec - lasttime.tv_usec);
629}
630EXPORT_SYMBOL(timeval_usec_diff);
631
632static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
633{
634 curtime->tv_usec += add_usec;
635 if (curtime->tv_usec >= 1000000) {
636 curtime->tv_usec -= 1000000;
637 curtime->tv_sec++;
638 }
639}
640
641/*
642 * Sleep until gettimeofday() > waketime + add_usec
643 * This needs to be as precise as possible, but as the delay is
644 * usually between 2ms and 32ms, it is done using a scheduled msleep
645 * followed by usleep (normally a busy-wait loop) for the remainder
646 */
647void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
648{
649 struct timeval lasttime;
650 s32 delta, newdelta;
651
652 timeval_usec_add(waketime, add_usec);
653
654 do_gettimeofday(&lasttime);
655 delta = timeval_usec_diff(lasttime, *waketime);
656 if (delta > 2500) {
657 msleep((delta - 1500) / 1000);
658 do_gettimeofday(&lasttime);
659 newdelta = timeval_usec_diff(lasttime, *waketime);
660 delta = (newdelta > delta) ? 0 : newdelta;
661 }
662 if (delta > 0)
663 udelay(delta);
664}
665EXPORT_SYMBOL(dvb_frontend_sleep_until);
666
1da177e4
LT		 667static int dvb_frontend_start(struct dvb_frontend *fe)
668{
669 int ret;
0c53c70f 670 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 671 struct task_struct *fe_thread;
1da177e4 672
46b4f7c1 673 dprintk ("%s\n", __func__);
1da177e4 674
8eec1429 675 if (fepriv->thread) {
1da177e4
LT		 676 if (!fepriv->exit)
677 return 0;
678 else
679 dvb_frontend_stop (fe);
680 }
681
682 if (signal_pending(current))
683 return -EINTR;
684 if (down_interruptible (&fepriv->sem))
685 return -EINTR;
686
687 fepriv->state = FESTATE_IDLE;
688 fepriv->exit = 0;
8eec1429 689 fepriv->thread = NULL;
1da177e4
LT		 690 mb();
691
8eec1429 692 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 693 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 694 if (IS_ERR(fe_thread)) {
695 ret = PTR_ERR(fe_thread);
696 printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
1da177e4
LT		 697 up(&fepriv->sem);
698 return ret;
699 }
8eec1429 700 fepriv->thread = fe_thread;
1da177e4
LT		 701 return 0;
702}
703
c471b331
OE		 704static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
705 u32 *freq_min, u32 *freq_max)
706{
707 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
708
709 if (fe->ops.info.frequency_max == 0)
710 *freq_max = fe->ops.tuner_ops.info.frequency_max;
711 else if (fe->ops.tuner_ops.info.frequency_max == 0)
712 *freq_max = fe->ops.info.frequency_max;
713 else
714 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
715
716 if (*freq_min == 0 || *freq_max == 0)
363c35fc
ST		 717 printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
718 fe->dvb->num,fe->id);
c471b331
OE		 719}
720
1fab46f0
OE		 721static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
722 struct dvb_frontend_parameters *parms)
723{
c471b331
OE		 724 u32 freq_min;
725 u32 freq_max;
726
1fab46f0 727 /* range check: frequency */
c471b331
OE		 728 dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
729 if ((freq_min && parms->frequency < freq_min) ||
730 (freq_max && parms->frequency > freq_max)) {
363c35fc
ST		 731 printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
732 fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max);
1fab46f0
OE		 733 return -EINVAL;
734 }
735
736 /* range check: symbol rate */
737 if (fe->ops.info.type == FE_QPSK) {
738 if ((fe->ops.info.symbol_rate_min &&
739 parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
740 (fe->ops.info.symbol_rate_max &&
741 parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 742 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
743 fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate,
1fab46f0
OE		 744 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
745 return -EINVAL;
746 }
747
748 } else if (fe->ops.info.type == FE_QAM) {
749 if ((fe->ops.info.symbol_rate_min &&
750 parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
751 (fe->ops.info.symbol_rate_max &&
752 parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 753 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
754 fe->dvb->num, fe->id, parms->u.qam.symbol_rate,
1fab46f0
OE		 755 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
756 return -EINVAL;
757 }
758 }
759
760 return 0;
761}
762
56f0680a 763struct dtv_cmds_h dtv_cmds[] = {
e7fee0f3
ST		 764 [DTV_TUNE] = {
765 .name = "DTV_TUNE",
766 .cmd = DTV_TUNE,
6b73eeaf
ST		 767 .set = 1,
768 },
e7fee0f3
ST		 769 [DTV_CLEAR] = {
770 .name = "DTV_CLEAR",
771 .cmd = DTV_CLEAR,
6b73eeaf
ST		 772 .set = 1,
773 },
774
775 /* Set */
363429a0
ST		 776 [DTV_FREQUENCY] = {
777 .name = "DTV_FREQUENCY",
778 .cmd = DTV_FREQUENCY,
6b73eeaf
ST		 779 .set = 1,
780 },
75b7f943
ST		 781 [DTV_BANDWIDTH_HZ] = {
782 .name = "DTV_BANDWIDTH_HZ",
783 .cmd = DTV_BANDWIDTH_HZ,
6b73eeaf
ST		 784 .set = 1,
785 },
363429a0
ST		 786 [DTV_MODULATION] = {
787 .name = "DTV_MODULATION",
788 .cmd = DTV_MODULATION,
6b73eeaf
ST		 789 .set = 1,
790 },
363429a0
ST		 791 [DTV_INVERSION] = {
792 .name = "DTV_INVERSION",
793 .cmd = DTV_INVERSION,
6b73eeaf
ST		 794 .set = 1,
795 },
363429a0
ST		 796 [DTV_DISEQC_MASTER] = {
797 .name = "DTV_DISEQC_MASTER",
798 .cmd = DTV_DISEQC_MASTER,
6b73eeaf
ST		 799 .set = 1,
800 .buffer = 1,
801 },
363429a0
ST		 802 [DTV_SYMBOL_RATE] = {
803 .name = "DTV_SYMBOL_RATE",
804 .cmd = DTV_SYMBOL_RATE,
6b73eeaf
ST		 805 .set = 1,
806 },
363429a0
ST		 807 [DTV_INNER_FEC] = {
808 .name = "DTV_INNER_FEC",
809 .cmd = DTV_INNER_FEC,
6b73eeaf
ST		 810 .set = 1,
811 },
363429a0
ST		 812 [DTV_VOLTAGE] = {
813 .name = "DTV_VOLTAGE",
814 .cmd = DTV_VOLTAGE,
6b73eeaf
ST		 815 .set = 1,
816 },
363429a0
ST		 817 [DTV_TONE] = {
818 .name = "DTV_TONE",
819 .cmd = DTV_TONE,
6b73eeaf
ST		 820 .set = 1,
821 },
363429a0
ST		 822 [DTV_PILOT] = {
823 .name = "DTV_PILOT",
824 .cmd = DTV_PILOT,
6b73eeaf
ST		 825 .set = 1,
826 },
363429a0
ST		 827 [DTV_ROLLOFF] = {
828 .name = "DTV_ROLLOFF",
829 .cmd = DTV_ROLLOFF,
6b73eeaf
ST		 830 .set = 1,
831 },
363429a0
ST		 832 [DTV_DELIVERY_SYSTEM] = {
833 .name = "DTV_DELIVERY_SYSTEM",
834 .cmd = DTV_DELIVERY_SYSTEM,
6b73eeaf
ST		 835 .set = 1,
836 },
ef526f42
ST		 837 [DTV_HIERARCHY] = {
838 .name = "DTV_HIERARCHY",
839 .cmd = DTV_HIERARCHY,
840 .set = 1,
841 },
a4de91be
ST		 842 [DTV_CODE_RATE_HP] = {
843 .name = "DTV_CODE_RATE_HP",
844 .cmd = DTV_CODE_RATE_HP,
845 .set = 1,
846 },
847 [DTV_CODE_RATE_LP] = {
848 .name = "DTV_CODE_RATE_LP",
849 .cmd = DTV_CODE_RATE_LP,
850 .set = 1,
851 },
b87625f0
ST		 852 [DTV_GUARD_INTERVAL] = {
853 .name = "DTV_GUARD_INTERVAL",
854 .cmd = DTV_GUARD_INTERVAL,
855 .set = 1,
856 },
857 [DTV_TRANSMISSION_MODE] = {
858 .name = "DTV_TRANSMISSION_MODE",
859 .cmd = DTV_TRANSMISSION_MODE,
860 .set = 1,
861 },
6b73eeaf 862 /* Get */
363429a0
ST		 863 [DTV_DISEQC_SLAVE_REPLY] = {
864 .name = "DTV_DISEQC_SLAVE_REPLY",
865 .cmd = DTV_DISEQC_SLAVE_REPLY,
6b73eeaf
ST		 866 .set = 0,
867 .buffer = 1,
868 },
eacf8d8d
ST		 869 [DTV_API_VERSION] = {
870 .name = "DTV_API_VERSION",
871 .cmd = DTV_API_VERSION,
872 .set = 0,
873 },
a4de91be
ST		 874 [DTV_CODE_RATE_HP] = {
875 .name = "DTV_CODE_RATE_HP",
876 .cmd = DTV_CODE_RATE_HP,
877 .set = 0,
878 },
879 [DTV_CODE_RATE_LP] = {
880 .name = "DTV_CODE_RATE_LP",
881 .cmd = DTV_CODE_RATE_LP,
882 .set = 0,
883 },
b87625f0
ST		 884 [DTV_GUARD_INTERVAL] = {
885 .name = "DTV_GUARD_INTERVAL",
886 .cmd = DTV_GUARD_INTERVAL,
887 .set = 0,
888 },
889 [DTV_TRANSMISSION_MODE] = {
890 .name = "DTV_TRANSMISSION_MODE",
891 .cmd = DTV_TRANSMISSION_MODE,
892 .set = 0,
893 },
ef526f42
ST		 894 [DTV_HIERARCHY] = {
895 .name = "DTV_HIERARCHY",
896 .cmd = DTV_HIERARCHY,
897 .set = 0,
898 },
6b73eeaf
ST		 899};
900
e7fee0f3 901void dtv_property_dump(struct dtv_property *tvp)
6b73eeaf
ST		 902{
903 int i;
904
82d7669d 905 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
a1bc84c0 906 printk(KERN_WARNING "%s: tvp.cmd = 0x%08x undefined\n",
4aae8efb
DB		 907 __func__, tvp->cmd);
908 return;
909 }
910
a1bc84c0
ST		 911 dprintk("%s() tvp.cmd = 0x%08x (%s)\n"
912 ,__func__
6b73eeaf 913 ,tvp->cmd
56f0680a 914 ,dtv_cmds[ tvp->cmd ].name);
6b73eeaf 915
56f0680a 916 if(dtv_cmds[ tvp->cmd ].buffer) {
6b73eeaf 917
a1bc84c0
ST		 918 dprintk("%s() tvp.u.buffer.len = 0x%02x\n"
919 ,__func__
6b73eeaf
ST		 920 ,tvp->u.buffer.len);
921
922 for(i = 0; i < tvp->u.buffer.len; i++)
a1bc84c0
ST		 923 dprintk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
924 ,__func__
6b73eeaf
ST		 925 ,i
926 ,tvp->u.buffer.data[i]);
927
928 } else
a1bc84c0 929 dprintk("%s() tvp.u.data = 0x%08x\n", __func__, tvp->u.data);
6b73eeaf
ST		 930}
931
932int is_legacy_delivery_system(fe_delivery_system_t s)
933{
934 if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
935 (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS))
936 return 1;
937
938 return 0;
939}
940
ee33c525
ST		 941/* Synchronise the legacy tuning parameters into the cache, so that demodulator
942 * drivers can use a single set_frontend tuning function, regardless of whether
943 * it's being used for the legacy or new API, reducing code and complexity.
944 */
945void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
946{
947 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
948
949 c->frequency = p->frequency;
950 c->inversion = p->inversion;
951
952 switch (fe->ops.info.type) {
953 case FE_QPSK:
e5cefa82
DB		 954 c->modulation = QPSK; /* implied for DVB-S in legacy API */
955 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
ee33c525
ST		 956 c->symbol_rate = p->u.qpsk.symbol_rate;
957 c->fec_inner = p->u.qpsk.fec_inner;
80a773c9 958 c->delivery_system = SYS_DVBS;
ee33c525
ST		 959 break;
960 case FE_QAM:
961 c->symbol_rate = p->u.qam.symbol_rate;
962 c->fec_inner = p->u.qam.fec_inner;
963 c->modulation = p->u.qam.modulation;
80a773c9 964 c->delivery_system = SYS_DVBC_ANNEX_AC;
ee33c525
ST		 965 break;
966 case FE_OFDM:
75b7f943
ST		 967 if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
968 c->bandwidth_hz = 6000000;
969 else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
970 c->bandwidth_hz = 7000000;
971 else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
972 c->bandwidth_hz = 8000000;
973 else
974 /* Including BANDWIDTH_AUTO */
975 c->bandwidth_hz = 0;
ee33c525
ST		 976 c->code_rate_HP = p->u.ofdm.code_rate_HP;
977 c->code_rate_LP = p->u.ofdm.code_rate_LP;
978 c->modulation = p->u.ofdm.constellation;
979 c->transmission_mode = p->u.ofdm.transmission_mode;
980 c->guard_interval = p->u.ofdm.guard_interval;
981 c->hierarchy = p->u.ofdm.hierarchy_information;
80a773c9 982 c->delivery_system = SYS_DVBT;
ee33c525
ST		 983 break;
984 case FE_ATSC:
985 c->modulation = p->u.vsb.modulation;
80a773c9
ST		 986 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
987 c->delivery_system = SYS_ATSC;
988 else
989 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525
ST		 990 break;
991 }
992}
993
d5748f10
ST		 994/* Ensure the cached values are set correctly in the frontend
995 * legacy tuning structures, for the advanced tuning API.
996 */
997void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
6b73eeaf 998{
d5748f10
ST		 999 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1000 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1001 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1002
d5748f10
ST		 1003 p->frequency = c->frequency;
1004 p->inversion = c->inversion;
6b73eeaf 1005
d5748f10
ST		 1006 switch (fe->ops.info.type) {
1007 case FE_QPSK:
a1bc84c0 1008 dprintk("%s() Preparing QPSK req\n", __func__);
d5748f10
ST		 1009 p->u.qpsk.symbol_rate = c->symbol_rate;
1010 p->u.qpsk.fec_inner = c->fec_inner;
80a773c9 1011 c->delivery_system = SYS_DVBS;
d5748f10
ST		 1012 break;
1013 case FE_QAM:
a1bc84c0 1014 dprintk("%s() Preparing QAM req\n", __func__);
d5748f10
ST		 1015 p->u.qam.symbol_rate = c->symbol_rate;
1016 p->u.qam.fec_inner = c->fec_inner;
1017 p->u.qam.modulation = c->modulation;
80a773c9 1018 c->delivery_system = SYS_DVBC_ANNEX_AC;
d5748f10
ST		 1019 break;
1020 case FE_OFDM:
a1bc84c0 1021 dprintk("%s() Preparing OFDM req\n", __func__);
75b7f943
ST		 1022 if (c->bandwidth_hz == 6000000)
1023 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1024 else if (c->bandwidth_hz == 7000000)
1025 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1026 else if (c->bandwidth_hz == 8000000)
1027 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
1028 else
1029 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 1030 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1031 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1032 p->u.ofdm.constellation = c->modulation;
1033 p->u.ofdm.transmission_mode = c->transmission_mode;
1034 p->u.ofdm.guard_interval = c->guard_interval;
1035 p->u.ofdm.hierarchy_information = c->hierarchy;
80a773c9 1036 c->delivery_system = SYS_DVBT;
d5748f10
ST		 1037 break;
1038 case FE_ATSC:
a1bc84c0 1039 dprintk("%s() Preparing VSB req\n", __func__);
d5748f10 1040 p->u.vsb.modulation = c->modulation;
80a773c9
ST		 1041 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1042 c->delivery_system = SYS_ATSC;
1043 else
1044 c->delivery_system = SYS_DVBC_ANNEX_B;
d5748f10
ST		 1045 break;
1046 }
1047}
1048
1049/* Ensure the cached values are set correctly in the frontend
1050 * legacy tuning structures, for the legacy tuning API.
1051 */
1052void dtv_property_adv_params_sync(struct dvb_frontend *fe)
1053{
56f0680a 1054 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1055 struct dvb_frontend_private *fepriv = fe->frontend_priv;
d5748f10 1056 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1057
d5748f10
ST		 1058 p->frequency = c->frequency;
1059 p->inversion = c->inversion;
1060
1061 switch(c->modulation) {
0a6393ae
ST		 1062 case PSK_8:
1063 case APSK_16:
97854829 1064 case APSK_32:
0a6393ae 1065 case QPSK:
d5748f10
ST		 1066 p->u.qpsk.symbol_rate = c->symbol_rate;
1067 p->u.qpsk.fec_inner = c->fec_inner;
1068 break;
1069 default:
1070 break;
1071 }
1072
1073 if(c->delivery_system == SYS_ISDBT) {
1074 /* Fake out a generic DVB-T request so we pass validation in the ioctl */
1075 p->frequency = c->frequency;
1076 p->inversion = INVERSION_AUTO;
1077 p->u.ofdm.constellation = QAM_AUTO;
1078 p->u.ofdm.code_rate_HP = FEC_AUTO;
1079 p->u.ofdm.code_rate_LP = FEC_AUTO;
1080 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
1081 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
1082 p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
1083 p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
1084 }
1085}
1086
1087void dtv_property_cache_submit(struct dvb_frontend *fe)
1088{
1089 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1090
d5748f10
ST		 1091 /* For legacy delivery systems we don't need the delivery_system to
1092 * be specified, but we populate the older structures from the cache
1093 * so we can call set_frontend on older drivers.
1094 */
6b73eeaf 1095 if(is_legacy_delivery_system(c->delivery_system)) {
6b73eeaf 1096
a1bc84c0 1097 dprintk("%s() legacy, modulation = %d\n", __func__, c->modulation);
d5748f10 1098 dtv_property_legacy_params_sync(fe);
6b73eeaf 1099
6b73eeaf 1100 } else {
a1bc84c0 1101 dprintk("%s() adv, modulation = %d\n", __func__, c->modulation);
d5748f10 1102
6b73eeaf
ST		 1103 /* For advanced delivery systems / modulation types ...
1104 * we seed the lecacy dvb_frontend_parameters structure
1105 * so that the sanity checking code later in the IOCTL processing
1106 * can validate our basic frequency ranges, symbolrates, modulation
1107 * etc.
1108 */
d5748f10 1109 dtv_property_adv_params_sync(fe);
6b73eeaf 1110 }
6b73eeaf
ST		 1111}
1112
13c97bf5
ST		 1113static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1114 unsigned int cmd, void *parg);
1115static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1116 unsigned int cmd, void *parg);
1117
363429a0
ST		 1118int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp,
1119 struct inode *inode, struct file *file)
1120{
1121 int r = 0;
1122
363429a0
ST		 1123 dtv_property_dump(tvp);
1124
bfbf2dae
ST		 1125 /* Allow the frontend to validate incoming properties */
1126 if (fe->ops.get_property)
1127 r = fe->ops.get_property(fe, tvp);
1128
1129 if (r < 0)
1130 return r;
1131
363429a0
ST		 1132 switch(tvp->cmd) {
1133 case DTV_FREQUENCY:
1134 tvp->u.data = fe->dtv_property_cache.frequency;
1135 break;
1136 case DTV_MODULATION:
1137 tvp->u.data = fe->dtv_property_cache.modulation;
1138 break;
75b7f943
ST		 1139 case DTV_BANDWIDTH_HZ:
1140 tvp->u.data = fe->dtv_property_cache.bandwidth_hz;
363429a0
ST		 1141 break;
1142 case DTV_INVERSION:
1143 tvp->u.data = fe->dtv_property_cache.inversion;
1144 break;
1145 case DTV_SYMBOL_RATE:
1146 tvp->u.data = fe->dtv_property_cache.symbol_rate;
1147 break;
1148 case DTV_INNER_FEC:
1149 tvp->u.data = fe->dtv_property_cache.fec_inner;
1150 break;
1151 case DTV_PILOT:
1152 tvp->u.data = fe->dtv_property_cache.pilot;
1153 break;
1154 case DTV_ROLLOFF:
1155 tvp->u.data = fe->dtv_property_cache.rolloff;
1156 break;
1157 case DTV_DELIVERY_SYSTEM:
1158 tvp->u.data = fe->dtv_property_cache.delivery_system;
1159 break;
363429a0
ST		 1160 case DTV_VOLTAGE:
1161 tvp->u.data = fe->dtv_property_cache.voltage;
1162 break;
1163 case DTV_TONE:
1164 tvp->u.data = fe->dtv_property_cache.sectone;
1165 break;
eacf8d8d
ST		 1166 case DTV_API_VERSION:
1167 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1168 break;
a4de91be
ST		 1169 case DTV_CODE_RATE_HP:
1170 tvp->u.data = fe->dtv_property_cache.code_rate_HP;
1171 break;
1172 case DTV_CODE_RATE_LP:
1173 tvp->u.data = fe->dtv_property_cache.code_rate_LP;
1174 break;
b87625f0
ST		 1175 case DTV_GUARD_INTERVAL:
1176 tvp->u.data = fe->dtv_property_cache.guard_interval;
1177 break;
1178 case DTV_TRANSMISSION_MODE:
1179 tvp->u.data = fe->dtv_property_cache.transmission_mode;
1180 break;
ef526f42
ST		 1181 case DTV_HIERARCHY:
1182 tvp->u.data = fe->dtv_property_cache.hierarchy;
1183 break;
363429a0
ST		 1184 default:
1185 r = -1;
1186 }
1187
1188 return r;
1189}
1190
1191int dtv_property_process_set(struct dvb_frontend *fe, struct dtv_property *tvp,
13c97bf5 1192 struct inode *inode, struct file *file)
6b73eeaf
ST		 1193{
1194 int r = 0;
13c97bf5 1195 struct dvb_frontend_private *fepriv = fe->frontend_priv;
56f0680a 1196 dtv_property_dump(tvp);
6b73eeaf 1197
bfbf2dae
ST		 1198 /* Allow the frontend to validate incoming properties */
1199 if (fe->ops.set_property)
1200 r = fe->ops.set_property(fe, tvp);
1201
1202 if (r < 0)
1203 return r;
1204
6b73eeaf 1205 switch(tvp->cmd) {
e7fee0f3 1206 case DTV_CLEAR:
6b73eeaf
ST		 1207 /* Reset a cache of data specific to the frontend here. This does
1208 * not effect hardware.
1209 */
a1bc84c0 1210 dprintk("%s() Flushing property cache\n", __func__);
56f0680a 1211 memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties));
e7fee0f3 1212 fe->dtv_property_cache.state = tvp->cmd;
56f0680a 1213 fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;
6b73eeaf 1214 break;
e7fee0f3 1215 case DTV_TUNE:
6b73eeaf 1216 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1217 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1218 * ioctl.
6b73eeaf 1219 */
e7fee0f3 1220 fe->dtv_property_cache.state = tvp->cmd;
a1bc84c0 1221 dprintk("%s() Finalised property cache\n", __func__);
d5748f10
ST		 1222 dtv_property_cache_submit(fe);
1223
13c97bf5
ST		 1224 r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
1225 &fepriv->parameters);
6b73eeaf 1226 break;
363429a0 1227 case DTV_FREQUENCY:
56f0680a 1228 fe->dtv_property_cache.frequency = tvp->u.data;
6b73eeaf 1229 break;
363429a0 1230 case DTV_MODULATION:
56f0680a 1231 fe->dtv_property_cache.modulation = tvp->u.data;
6b73eeaf 1232 break;
75b7f943
ST		 1233 case DTV_BANDWIDTH_HZ:
1234 fe->dtv_property_cache.bandwidth_hz = tvp->u.data;
6b73eeaf 1235 break;
363429a0 1236 case DTV_INVERSION:
56f0680a 1237 fe->dtv_property_cache.inversion = tvp->u.data;
6b73eeaf 1238 break;
363429a0 1239 case DTV_SYMBOL_RATE:
56f0680a 1240 fe->dtv_property_cache.symbol_rate = tvp->u.data;
6b73eeaf 1241 break;
363429a0 1242 case DTV_INNER_FEC:
56f0680a 1243 fe->dtv_property_cache.fec_inner = tvp->u.data;
6b73eeaf 1244 break;
363429a0 1245 case DTV_PILOT:
56f0680a 1246 fe->dtv_property_cache.pilot = tvp->u.data;
6b73eeaf 1247 break;
363429a0 1248 case DTV_ROLLOFF:
56f0680a 1249 fe->dtv_property_cache.rolloff = tvp->u.data;
6b73eeaf 1250 break;
363429a0 1251 case DTV_DELIVERY_SYSTEM:
56f0680a 1252 fe->dtv_property_cache.delivery_system = tvp->u.data;
6b73eeaf 1253 break;
363429a0 1254 case DTV_VOLTAGE:
56f0680a 1255 fe->dtv_property_cache.voltage = tvp->u.data;
13c97bf5 1256 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE,
56f0680a 1257 (void *)fe->dtv_property_cache.voltage);
13c97bf5 1258 break;
363429a0 1259 case DTV_TONE:
56f0680a 1260 fe->dtv_property_cache.sectone = tvp->u.data;
13c97bf5 1261 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE,
56f0680a 1262 (void *)fe->dtv_property_cache.sectone);
13c97bf5 1263 break;
a4de91be
ST		 1264 case DTV_CODE_RATE_HP:
1265 fe->dtv_property_cache.code_rate_HP = tvp->u.data;
1266 break;
1267 case DTV_CODE_RATE_LP:
1268 fe->dtv_property_cache.code_rate_LP = tvp->u.data;
1269 break;
b87625f0
ST		 1270 case DTV_GUARD_INTERVAL:
1271 fe->dtv_property_cache.guard_interval = tvp->u.data;
1272 break;
1273 case DTV_TRANSMISSION_MODE:
1274 fe->dtv_property_cache.transmission_mode = tvp->u.data;
1275 break;
ef526f42
ST		 1276 case DTV_HIERARCHY:
1277 fe->dtv_property_cache.hierarchy = tvp->u.data;
1278 break;
363429a0
ST		 1279 default:
1280 r = -1;
6b73eeaf
ST		 1281 }
1282
13c97bf5 1283 return r;
6b73eeaf
ST		 1284}
1285
1da177e4
LT		 1286static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
1287 unsigned int cmd, void *parg)
1288{
1289 struct dvb_device *dvbdev = file->private_data;
1290 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1291 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1292 int err = -EOPNOTSUPP;
1293
46b4f7c1 1294 dprintk ("%s\n", __func__);
1da177e4 1295
813ce47c 1296 if (fepriv->exit)
1da177e4
LT		 1297 return -ENODEV;
1298
1299 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1300 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1301 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1302 return -EPERM;
1303
1304 if (down_interruptible (&fepriv->sem))
1305 return -ERESTARTSYS;
1306
13c97bf5
ST		 1307 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
1308 err = dvb_frontend_ioctl_properties(inode, file, cmd, parg);
4dd88bec
ST		 1309 else {
1310 fe->dtv_property_cache.state = DTV_UNDEFINED;
13c97bf5 1311 err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg);
4dd88bec 1312 }
13c97bf5
ST		 1313
1314 up(&fepriv->sem);
1315 return err;
1316}
1317
1318static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1319 unsigned int cmd, void *parg)
1320{
1321 struct dvb_device *dvbdev = file->private_data;
1322 struct dvb_frontend *fe = dvbdev->priv;
e6f9ec86 1323 int err = 0;
e7fee0f3
ST		 1324
1325 struct dtv_properties *tvps = NULL;
1326 struct dtv_property *tvp = NULL;
1327 int i;
13c97bf5
ST		 1328
1329 dprintk("%s\n", __func__);
1330
6b73eeaf 1331 if(cmd == FE_SET_PROPERTY) {
e7fee0f3 1332 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1333
a1bc84c0
ST		 1334 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1335 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 1336
1337 /* Put an arbitrary limit on the number of messages that can
1338 * be sent at once */
6068f506 1339 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 1340 return -EINVAL;
1341
1342 tvp = (struct dtv_property *) kmalloc(tvps->num *
1343 sizeof(struct dtv_property), GFP_KERNEL);
1344 if (!tvp) {
1345 err = -ENOMEM;
1346 goto out;
6b73eeaf
ST		 1347 }
1348
e7fee0f3
ST		 1349 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1350 err = -EFAULT;
1351 goto out;
1352 }
1353
d48cb402
ST		 1354 for (i = 0; i < tvps->num; i++) {
1355 (tvp + i)->result = dtv_property_process_set(fe, tvp + i, inode, file);
1356 err |= (tvp + i)->result;
1357 }
e7fee0f3 1358
a1bc84c0
ST		 1359 if(fe->dtv_property_cache.state == DTV_TUNE)
1360 dprintk("%s() Property cache is full, tuning\n", __func__);
bfbf2dae 1361
363429a0
ST		 1362 } else
1363 if(cmd == FE_GET_PROPERTY) {
363429a0
ST		 1364
1365 tvps = (struct dtv_properties __user *)parg;
1366
a1bc84c0
ST		 1367 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1368 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 1369
1370 /* Put an arbitrary limit on the number of messages that can
1371 * be sent at once */
6068f506 1372 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 1373 return -EINVAL;
1374
1375 tvp = (struct dtv_property *) kmalloc(tvps->num *
1376 sizeof(struct dtv_property), GFP_KERNEL);
1377 if (!tvp) {
1378 err = -ENOMEM;
1379 goto out;
1380 }
1381
1382 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1383 err = -EFAULT;
1384 goto out;
1385 }
1386
d48cb402
ST		 1387 for (i = 0; i < tvps->num; i++) {
1388 (tvp + i)->result = dtv_property_process_get(fe, tvp + i, inode, file);
1389 err |= (tvp + i)->result;
1390 }
363429a0
ST		 1391
1392 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1393 err = -EFAULT;
1394 goto out;
1395 }
1396
363429a0
ST		 1397 } else
1398 err = -EOPNOTSUPP;
1399
e7fee0f3
ST		 1400out:
1401 kfree(tvp);
13c97bf5
ST		 1402 return err;
1403}
1404
1405static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1406 unsigned int cmd, void *parg)
1407{
1408 struct dvb_device *dvbdev = file->private_data;
1409 struct dvb_frontend *fe = dvbdev->priv;
1410 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1411 int err = -EOPNOTSUPP;
1412
1da177e4
LT		 1413 switch (cmd) {
1414 case FE_GET_INFO: {
0c53c70f 1415 struct dvb_frontend_info* info = parg;
dea74869 1416 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
c471b331 1417 dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4
LT		 1418
1419 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
1420 * do it, it is done for it. */
1421 info->caps |= FE_CAN_INVERSION_AUTO;
1422 err = 0;
1423 break;
1424 }
1425
6757ccc5
PB		 1426 case FE_READ_STATUS: {
1427 fe_status_t* status = parg;
1428
1429 /* if retune was requested but hasn't occured yet, prevent
1430 * that user get signal state from previous tuning */
1431 if(fepriv->state == FESTATE_RETUNE) {
1432 err=0;
1433 *status = 0;
1434 break;
1435 }
1436
dea74869
PB		 1437 if (fe->ops.read_status)
1438 err = fe->ops.read_status(fe, status);
1da177e4 1439 break;
6757ccc5 1440 }
1da177e4 1441 case FE_READ_BER:
dea74869
PB		 1442 if (fe->ops.read_ber)
1443 err = fe->ops.read_ber(fe, (__u32*) parg);
1da177e4
LT		 1444 break;
1445
1446 case FE_READ_SIGNAL_STRENGTH:
dea74869
PB		 1447 if (fe->ops.read_signal_strength)
1448 err = fe->ops.read_signal_strength(fe, (__u16*) parg);
1da177e4
LT		 1449 break;
1450
1451 case FE_READ_SNR:
dea74869
PB		 1452 if (fe->ops.read_snr)
1453 err = fe->ops.read_snr(fe, (__u16*) parg);
1da177e4
LT		 1454 break;
1455
1456 case FE_READ_UNCORRECTED_BLOCKS:
dea74869
PB		 1457 if (fe->ops.read_ucblocks)
1458 err = fe->ops.read_ucblocks(fe, (__u32*) parg);
1da177e4
LT		 1459 break;
1460
1461
1462 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 1463 if (fe->ops.diseqc_reset_overload) {
1464 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 1465 fepriv->state = FESTATE_DISEQC;
1466 fepriv->status = 0;
1467 }
1468 break;
1469
1470 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 1471 if (fe->ops.diseqc_send_master_cmd) {
1472 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 1473 fepriv->state = FESTATE_DISEQC;
1474 fepriv->status = 0;
1475 }
1476 break;
1477
1478 case FE_DISEQC_SEND_BURST:
dea74869
PB		 1479 if (fe->ops.diseqc_send_burst) {
1480 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 1481 fepriv->state = FESTATE_DISEQC;
1482 fepriv->status = 0;
1483 }
1484 break;
1485
1486 case FE_SET_TONE:
dea74869
PB		 1487 if (fe->ops.set_tone) {
1488 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 1489 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 1490 fepriv->state = FESTATE_DISEQC;
1491 fepriv->status = 0;
1492 }
1493 break;
1494
1495 case FE_SET_VOLTAGE:
dea74869
PB		 1496 if (fe->ops.set_voltage) {
1497 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 1498 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 1499 fepriv->state = FESTATE_DISEQC;
1500 fepriv->status = 0;
1501 }
1502 break;
1503
1504 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 1505 if (fe->ops.dishnetwork_send_legacy_command) {
1506 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 1507 fepriv->state = FESTATE_DISEQC;
1508 fepriv->status = 0;
dea74869 1509 } else if (fe->ops.set_voltage) {
83b75b04
N		 1510 /*
1511 * NOTE: This is a fallback condition. Some frontends
1512 * (stv0299 for instance) take longer than 8msec to
1513 * respond to a set_voltage command. Those switches
1514 * need custom routines to switch properly. For all
1515 * other frontends, the following shoule work ok.
1516 * Dish network legacy switches (as used by Dish500)
1517 * are controlled by sending 9-bit command words
1518 * spaced 8msec apart.
1519 * the actual command word is switch/port dependant
1520 * so it is up to the userspace application to send
1521 * the right command.
1522 * The command must always start with a '0' after
1523 * initialization, so parg is 8 bits and does not
1524 * include the initialization or start bit
1525 */
c6eb8eaf 1526 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 1527 struct timeval nexttime;
1528 struct timeval tv[10];
1529 int i;
1530 u8 last = 1;
1531 if (dvb_frontend_debug)
c6eb8eaf 1532 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 1533 do_gettimeofday(&nexttime);
1534 if (dvb_frontend_debug)
1535 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
1536 /* before sending a command, initialize by sending
1537 * a 32ms 18V to the switch
1538 */
dea74869 1539 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 1540 dvb_frontend_sleep_until(&nexttime, 32000);
1541
1542 for (i = 0; i < 9; i++) {
1543 if (dvb_frontend_debug)
1544 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 1545 if ((swcmd & 0x01) != last) {
83b75b04 1546 /* set voltage to (last ? 13V : 18V) */
dea74869 1547 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 1548 last = (last) ? 0 : 1;
1549 }
c6eb8eaf 1550 swcmd = swcmd >> 1;
83b75b04
N		 1551 if (i != 8)
1552 dvb_frontend_sleep_until(&nexttime, 8000);
1553 }
1554 if (dvb_frontend_debug) {
1555 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 1556 __func__, fe->dvb->num);
83b75b04
N		 1557 for (i = 1; i < 10; i++)
1558 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
1559 }
1560 err = 0;
1561 fepriv->state = FESTATE_DISEQC;
1562 fepriv->status = 0;
1da177e4
LT		 1563 }
1564 break;
1565
1566 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 1567 if (fe->ops.diseqc_recv_slave_reply)
1568 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 1569 break;
1570
1571 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 1572 if (fe->ops.enable_high_lnb_voltage)
1573 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 1574 break;
1575
1576 case FE_SET_FRONTEND: {
1577 struct dvb_frontend_tune_settings fetunesettings;
1578
e7fee0f3 1579 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf
ST		 1580 if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) {
1581 err = -EINVAL;
1582 break;
1583 }
1584 } else {
1585 if (dvb_frontend_check_parameters(fe, parg) < 0) {
1586 err = -EINVAL;
1587 break;
1588 }
1fab46f0 1589
6b73eeaf
ST		 1590 memcpy (&fepriv->parameters, parg,
1591 sizeof (struct dvb_frontend_parameters));
1d78cac4 1592 dtv_property_cache_sync(fe, &fepriv->parameters);
6b73eeaf 1593 }
1da177e4
LT		 1594
1595 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
1596 memcpy(&fetunesettings.parameters, parg,
1597 sizeof (struct dvb_frontend_parameters));
1598
1599 /* force auto frequency inversion if requested */
1600 if (dvb_force_auto_inversion) {
1601 fepriv->parameters.inversion = INVERSION_AUTO;
1602 fetunesettings.parameters.inversion = INVERSION_AUTO;
1603 }
dea74869 1604 if (fe->ops.info.type == FE_OFDM) {
1b3c3714 1605 /* without hierarchical coding code_rate_LP is irrelevant,
1da177e4
LT		 1606 * so we tolerate the otherwise invalid FEC_NONE setting */
1607 if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
1608 fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE)
1609 fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
1610 }
1611
1612 /* get frontend-specific tuning settings */
dea74869 1613 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
1da177e4
LT		 1614 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
1615 fepriv->max_drift = fetunesettings.max_drift;
1616 fepriv->step_size = fetunesettings.step_size;
1617 } else {
1618 /* default values */
dea74869 1619 switch(fe->ops.info.type) {
1da177e4
LT		 1620 case FE_QPSK:
1621 fepriv->min_delay = HZ/20;
1622 fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000;
1623 fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000;
1624 break;
1625
1626 case FE_QAM:
1627 fepriv->min_delay = HZ/20;
1628 fepriv->step_size = 0; /* no zigzag */
1629 fepriv->max_drift = 0;
1630 break;
1631
1632 case FE_OFDM:
1633 fepriv->min_delay = HZ/20;
dea74869
PB		 1634 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
1635 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
1da177e4
LT		 1636 break;
1637 case FE_ATSC:
4821fb1d
MA		 1638 fepriv->min_delay = HZ/20;
1639 fepriv->step_size = 0;
1640 fepriv->max_drift = 0;
1da177e4
LT		 1641 break;
1642 }
1643 }
1644 if (dvb_override_tune_delay > 0)
1645 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
1646
1647 fepriv->state = FESTATE_RETUNE;
1648 dvb_frontend_wakeup(fe);
1649 dvb_frontend_add_event(fe, 0);
1650 fepriv->status = 0;
1651 err = 0;
1652 break;
1653 }
1654
1655 case FE_GET_EVENT:
1656 err = dvb_frontend_get_event (fe, parg, file->f_flags);
1657 break;
1658
1659 case FE_GET_FRONTEND:
dea74869 1660 if (fe->ops.get_frontend) {
1da177e4 1661 memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters));
dea74869 1662 err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg);
1da177e4
LT		 1663 }
1664 break;
36cb557a
AQ		 1665
1666 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 1667 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 1668 err = 0;
36cb557a 1669 break;
1da177e4
LT		 1670 };
1671
1da177e4
LT		 1672 return err;
1673}
1674
6b73eeaf 1675
1da177e4
LT		 1676static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
1677{
1678 struct dvb_device *dvbdev = file->private_data;
1679 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1680 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 1681
46b4f7c1 1682 dprintk ("%s\n", __func__);
1da177e4
LT		 1683
1684 poll_wait (file, &fepriv->events.wait_queue, wait);
1685
1686 if (fepriv->events.eventw != fepriv->events.eventr)
1687 return (POLLIN | POLLRDNORM | POLLPRI);
1688
1689 return 0;
1690}
1691
1692static int dvb_frontend_open(struct inode *inode, struct file *file)
1693{
1694 struct dvb_device *dvbdev = file->private_data;
1695 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1696 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 1697 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 1698 int ret;
1699
46b4f7c1 1700 dprintk ("%s\n", __func__);
1da177e4 1701
59b1842d
DB		 1702 if (adapter->mfe_shared) {
1703 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 1704
1705 if (adapter->mfe_dvbdev == NULL)
1706 adapter->mfe_dvbdev = dvbdev;
1707
1708 else if (adapter->mfe_dvbdev != dvbdev) {
1709 struct dvb_device
1710 *mfedev = adapter->mfe_dvbdev;
1711 struct dvb_frontend
1712 *mfe = mfedev->priv;
1713 struct dvb_frontend_private
1714 *mfepriv = mfe->frontend_priv;
1715 int mferetry = (dvb_mfe_wait_time << 1);
1716
1717 mutex_unlock (&adapter->mfe_lock);
1718 while (mferetry-- && (mfedev->users != -1 ||
1719 mfepriv->thread != NULL)) {
1720 if(msleep_interruptible(500)) {
1721 if(signal_pending(current))
1722 return -EINTR;
59b1842d 1723 }
6594690b
DB		 1724 }
1725
1726 mutex_lock (&adapter->mfe_lock);
1727 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 1728 mfedev = adapter->mfe_dvbdev;
1729 mfe = mfedev->priv;
1730 mfepriv = mfe->frontend_priv;
6594690b
DB		 1731 if (mfedev->users != -1 ||
1732 mfepriv->thread != NULL) {
1733 mutex_unlock (&adapter->mfe_lock);
1734 return -EBUSY;
59b1842d 1735 }
6594690b 1736 adapter->mfe_dvbdev = dvbdev;
59b1842d 1737 }
59b1842d
DB		 1738 }
1739 }
1740
48136e1e
OE		 1741 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
1742 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 1743 goto err0;
ba7e6f3e
ST		 1744 }
1745
48136e1e
OE		 1746 if ((ret = dvb_generic_open (inode, file)) < 0)
1747 goto err1;
04c56d0e 1748
48136e1e 1749 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 1750 /* normal tune mode when opened R/W */
1751 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
1752 fepriv->tone = -1;
1753 fepriv->voltage = -1;
1754
1da177e4
LT		 1755 ret = dvb_frontend_start (fe);
1756 if (ret)
48136e1e 1757 goto err2;
1da177e4
LT		 1758
1759 /* empty event queue */
1760 fepriv->events.eventr = fepriv->events.eventw = 0;
1761 }
1762
59b1842d
DB		 1763 if (adapter->mfe_shared)
1764 mutex_unlock (&adapter->mfe_lock);
1da177e4 1765 return ret;
48136e1e
OE		 1766
1767err2:
1768 dvb_generic_release(inode, file);
1769err1:
1770 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
1771 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 1772err0:
1773 if (adapter->mfe_shared)
1774 mutex_unlock (&adapter->mfe_lock);
48136e1e 1775 return ret;
1da177e4
LT		 1776}
1777
1778static int dvb_frontend_release(struct inode *inode, struct file *file)
1779{
1780 struct dvb_device *dvbdev = file->private_data;
1781 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1782 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 1783 int ret;
1da177e4 1784
46b4f7c1 1785 dprintk ("%s\n", __func__);
1da177e4
LT		 1786
1787 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
1788 fepriv->release_jiffies = jiffies;
1789
ca5be9cd
MR		 1790 ret = dvb_generic_release (inode, file);
1791
48136e1e
OE		 1792 if (dvbdev->users == -1) {
1793 if (fepriv->exit == 1) {
1794 fops_put(file->f_op);
1795 file->f_op = NULL;
1796 wake_up(&dvbdev->wait_queue);
1797 }
1798 if (fe->ops.ts_bus_ctrl)
1799 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 1800 }
48136e1e 1801
ca5be9cd 1802 return ret;
1da177e4
LT		 1803}
1804
1805static struct file_operations dvb_frontend_fops = {
1806 .owner = THIS_MODULE,
1807 .ioctl = dvb_generic_ioctl,
1808 .poll = dvb_frontend_poll,
1809 .open = dvb_frontend_open,
1810 .release = dvb_frontend_release
1811};
1812
1813int dvb_register_frontend(struct dvb_adapter* dvb,
1814 struct dvb_frontend* fe)
1815{
1816 struct dvb_frontend_private *fepriv;
1817 static const struct dvb_device dvbdev_template = {
1818 .users = ~0,
1819 .writers = 1,
1820 .readers = (~0)-1,
1821 .fops = &dvb_frontend_fops,
1822 .kernel_ioctl = dvb_frontend_ioctl
1823 };
1824
46b4f7c1 1825 dprintk ("%s\n", __func__);
1da177e4 1826
3593cab5 1827 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 1828 return -ERESTARTSYS;
1829
7408187d 1830 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 1831 if (fe->frontend_priv == NULL) {
3593cab5 1832 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1833 return -ENOMEM;
1834 }
0c53c70f 1835 fepriv = fe->frontend_priv;
1da177e4
LT		 1836
1837 init_MUTEX (&fepriv->sem);
1838 init_waitqueue_head (&fepriv->wait_queue);
1839 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 1840 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 1841 fe->dvb = dvb;
1842 fepriv->inversion = INVERSION_OFF;
1843
363c35fc 1844 printk ("DVB: registering adapter %i frontend %i (%s)...\n",
1da177e4 1845 fe->dvb->num,
363c35fc 1846 fe->id,
dea74869 1847 fe->ops.info.name);
1da177e4
LT		 1848
1849 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
1850 fe, DVB_DEVICE_FRONTEND);
1851
3593cab5 1852 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1853 return 0;
1854}
1855EXPORT_SYMBOL(dvb_register_frontend);
1856
1857int dvb_unregister_frontend(struct dvb_frontend* fe)
1858{
0c53c70f 1859 struct dvb_frontend_private *fepriv = fe->frontend_priv;
46b4f7c1 1860 dprintk ("%s\n", __func__);
1da177e4 1861
57861b43 1862 mutex_lock(&frontend_mutex);
ca5be9cd 1863 dvb_frontend_stop (fe);
57861b43
MR		 1864 mutex_unlock(&frontend_mutex);
1865
1866 if (fepriv->dvbdev->users < -1)
1867 wait_event(fepriv->dvbdev->wait_queue,
1868 fepriv->dvbdev->users==-1);
1869
3593cab5 1870 mutex_lock(&frontend_mutex);
1da177e4 1871 dvb_unregister_device (fepriv->dvbdev);
d9955060 1872
1da177e4
LT		 1873 /* fe is invalid now */
1874 kfree(fepriv);
3593cab5 1875 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1876 return 0;
1877}
1878EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 1879
149ef72d 1880#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 1881void dvb_frontend_detach(struct dvb_frontend* fe)
1882{
1883 void *ptr;
1884
1885 if (fe->ops.release_sec) {
1886 fe->ops.release_sec(fe);
1887 symbol_put_addr(fe->ops.release_sec);
1888 }
1889 if (fe->ops.tuner_ops.release) {
1890 fe->ops.tuner_ops.release(fe);
1891 symbol_put_addr(fe->ops.tuner_ops.release);
1892 }
2426a27e
MK		 1893 if (fe->ops.analog_ops.release) {
1894 fe->ops.analog_ops.release(fe);
1895 symbol_put_addr(fe->ops.analog_ops.release);
1896 }
f52a838b
AQ		 1897 ptr = (void*)fe->ops.release;
1898 if (ptr) {
1899 fe->ops.release(fe);
1900 symbol_put_addr(ptr);
1901 }
1902}
1903#else
1904void dvb_frontend_detach(struct dvb_frontend* fe)
1905{
1906 if (fe->ops.release_sec)
1907 fe->ops.release_sec(fe);
1908 if (fe->ops.tuner_ops.release)
1909 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 1910 if (fe->ops.analog_ops.release)
1911 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 1912 if (fe->ops.release)
1913 fe->ops.release(fe);
1914}
1915#endif
1916EXPORT_SYMBOL(dvb_frontend_detach);
kernel source for telekom puls (alcatel/mediatek)