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V4L/DVB (9344): DVB-Core update
[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb / dvb-core / dvb_frontend.c
CommitLineData
1da177e4
LT		 1/*
2 * dvb_frontend.c: DVB frontend tuning interface/thread
3 *
4 *
5 * Copyright (C) 1999-2001 Ralph Metzler
6 * Marcus Metzler
7 * Holger Waechtler
8 * for convergence integrated media GmbH
9 *
10 * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
26 */
27
28#include <linux/string.h>
29#include <linux/kernel.h>
30#include <linux/sched.h>
31#include <linux/wait.h>
32#include <linux/slab.h>
33#include <linux/poll.h>
34#include <linux/module.h>
1da177e4 35#include <linux/list.h>
7dfb7103 36#include <linux/freezer.h>
cc89c229 37#include <linux/jiffies.h>
8eec1429 38#include <linux/kthread.h>
1da177e4 39#include <asm/processor.h>
1da177e4
LT		 40
41#include "dvb_frontend.h"
42#include "dvbdev.h"
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;
c59e7870 131 enum dvbfe_search algo_status;
1da177e4
LT		 132};
133
86f40cc3 134static void dvb_frontend_wakeup(struct dvb_frontend *fe);
1da177e4
LT		 135
136static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
137{
0c53c70f 138 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 139 struct dvb_fe_events *events = &fepriv->events;
140 struct dvb_frontend_event *e;
141 int wp;
142
46b4f7c1 143 dprintk ("%s\n", __func__);
1da177e4 144
03b76123 145 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 146 return;
147
148 wp = (events->eventw + 1) % MAX_EVENT;
149
150 if (wp == events->eventr) {
151 events->overflow = 1;
152 events->eventr = (events->eventr + 1) % MAX_EVENT;
153 }
154
155 e = &events->events[events->eventw];
156
157 memcpy (&e->parameters, &fepriv->parameters,
158 sizeof (struct dvb_frontend_parameters));
159
160 if (status & FE_HAS_LOCK)
dea74869
PB		 161 if (fe->ops.get_frontend)
162 fe->ops.get_frontend(fe, &e->parameters);
1da177e4
LT		 163
164 events->eventw = wp;
165
03b76123 166 mutex_unlock(&events->mtx);
1da177e4
LT		 167
168 e->status = status;
169
170 wake_up_interruptible (&events->wait_queue);
171}
172
173static int dvb_frontend_get_event(struct dvb_frontend *fe,
174 struct dvb_frontend_event *event, int flags)
175{
0c53c70f 176 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 177 struct dvb_fe_events *events = &fepriv->events;
178
46b4f7c1 179 dprintk ("%s\n", __func__);
1da177e4
LT		 180
181 if (events->overflow) {
182 events->overflow = 0;
183 return -EOVERFLOW;
184 }
185
186 if (events->eventw == events->eventr) {
187 int ret;
188
189 if (flags & O_NONBLOCK)
190 return -EWOULDBLOCK;
191
192 up(&fepriv->sem);
193
194 ret = wait_event_interruptible (events->wait_queue,
195 events->eventw != events->eventr);
196
197 if (down_interruptible (&fepriv->sem))
198 return -ERESTARTSYS;
199
200 if (ret < 0)
201 return ret;
202 }
203
03b76123 204 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 205 return -ERESTARTSYS;
206
207 memcpy (event, &events->events[events->eventr],
208 sizeof(struct dvb_frontend_event));
209
210 events->eventr = (events->eventr + 1) % MAX_EVENT;
211
03b76123 212 mutex_unlock(&events->mtx);
1da177e4
LT		 213
214 return 0;
215}
216
217static void dvb_frontend_init(struct dvb_frontend *fe)
218{
363c35fc 219 dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n",
1da177e4 220 fe->dvb->num,
363c35fc 221 fe->id,
dea74869
PB		 222 fe->ops.info.name);
223
224 if (fe->ops.init)
225 fe->ops.init(fe);
226 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 227 if (fe->ops.i2c_gate_ctrl)
228 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 229 fe->ops.tuner_ops.init(fe);
230 if (fe->ops.i2c_gate_ctrl)
231 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 232 }
1da177e4
LT		 233}
234
86f40cc3
AQ		 235void dvb_frontend_reinitialise(struct dvb_frontend *fe)
236{
237 struct dvb_frontend_private *fepriv = fe->frontend_priv;
238
239 fepriv->reinitialise = 1;
240 dvb_frontend_wakeup(fe);
241}
242EXPORT_SYMBOL(dvb_frontend_reinitialise);
243
36cb557a 244static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 245{
36cb557a 246 int q2;
1da177e4 247
46b4f7c1 248 dprintk ("%s\n", __func__);
1da177e4 249
36cb557a
AQ		 250 if (locked)
251 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
252 else
253 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 254
36cb557a
AQ		 255 q2 = fepriv->quality - 128;
256 q2 *= q2;
1da177e4 257
36cb557a 258 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 259}
260
261/**
262 * Performs automatic twiddling of frontend parameters.
263 *
264 * @param fe The frontend concerned.
265 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
266 * @returns Number of complete iterations that have been performed.
267 */
36cb557a 268static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 269{
270 int autoinversion;
271 int ready = 0;
0c53c70f 272 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 273 int original_inversion = fepriv->parameters.inversion;
274 u32 original_frequency = fepriv->parameters.frequency;
275
276 /* are we using autoinversion? */
dea74869 277 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
1da177e4
LT		 278 (fepriv->parameters.inversion == INVERSION_AUTO));
279
280 /* setup parameters correctly */
281 while(!ready) {
282 /* calculate the lnb_drift */
283 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
284
285 /* wrap the auto_step if we've exceeded the maximum drift */
286 if (fepriv->lnb_drift > fepriv->max_drift) {
287 fepriv->auto_step = 0;
288 fepriv->auto_sub_step = 0;
289 fepriv->lnb_drift = 0;
290 }
291
292 /* perform inversion and +/- zigzag */
293 switch(fepriv->auto_sub_step) {
294 case 0:
295 /* try with the current inversion and current drift setting */
296 ready = 1;
297 break;
298
299 case 1:
300 if (!autoinversion) break;
301
302 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
303 ready = 1;
304 break;
305
306 case 2:
307 if (fepriv->lnb_drift == 0) break;
308
309 fepriv->lnb_drift = -fepriv->lnb_drift;
310 ready = 1;
311 break;
312
313 case 3:
314 if (fepriv->lnb_drift == 0) break;
315 if (!autoinversion) break;
316
317 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
318 fepriv->lnb_drift = -fepriv->lnb_drift;
319 ready = 1;
320 break;
321
322 default:
323 fepriv->auto_step++;
324 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
325 break;
326 }
327
328 if (!ready) fepriv->auto_sub_step++;
329 }
330
331 /* if this attempt would hit where we started, indicate a complete
332 * iteration has occurred */
333 if ((fepriv->auto_step == fepriv->started_auto_step) &&
334 (fepriv->auto_sub_step == 0) && check_wrapped) {
335 return 1;
336 }
337
338 dprintk("%s: drift:%i inversion:%i auto_step:%i "
339 "auto_sub_step:%i started_auto_step:%i\n",
46b4f7c1 340 __func__, fepriv->lnb_drift, fepriv->inversion,
1da177e4
LT		 341 fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
342
343 /* set the frontend itself */
344 fepriv->parameters.frequency += fepriv->lnb_drift;
345 if (autoinversion)
346 fepriv->parameters.inversion = fepriv->inversion;
dea74869
PB		 347 if (fe->ops.set_frontend)
348 fe->ops.set_frontend(fe, &fepriv->parameters);
1da177e4
LT		 349
350 fepriv->parameters.frequency = original_frequency;
351 fepriv->parameters.inversion = original_inversion;
352
353 fepriv->auto_sub_step++;
354 return 0;
355}
356
36cb557a
AQ		 357static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
358{
30d9464c 359 fe_status_t s = 0;
36cb557a
AQ		 360 struct dvb_frontend_private *fepriv = fe->frontend_priv;
361
362 /* if we've got no parameters, just keep idling */
363 if (fepriv->state & FESTATE_IDLE) {
364 fepriv->delay = 3*HZ;
365 fepriv->quality = 0;
366 return;
367 }
368
369 /* in SCAN mode, we just set the frontend when asked and leave it alone */
370 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
371 if (fepriv->state & FESTATE_RETUNE) {
dea74869
PB		 372 if (fe->ops.set_frontend)
373 fe->ops.set_frontend(fe, &fepriv->parameters);
36cb557a
AQ		 374 fepriv->state = FESTATE_TUNED;
375 }
376 fepriv->delay = 3*HZ;
377 fepriv->quality = 0;
378 return;
379 }
380
381 /* get the frontend status */
382 if (fepriv->state & FESTATE_RETUNE) {
383 s = 0;
384 } else {
dea74869
PB		 385 if (fe->ops.read_status)
386 fe->ops.read_status(fe, &s);
36cb557a
AQ		 387 if (s != fepriv->status) {
388 dvb_frontend_add_event(fe, s);
389 fepriv->status = s;
390 }
391 }
392
393 /* if we're not tuned, and we have a lock, move to the TUNED state */
394 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
395 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
396 fepriv->state = FESTATE_TUNED;
397
398 /* if we're tuned, then we have determined the correct inversion */
dea74869 399 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
36cb557a
AQ		 400 (fepriv->parameters.inversion == INVERSION_AUTO)) {
401 fepriv->parameters.inversion = fepriv->inversion;
402 }
403 return;
404 }
405
406 /* if we are tuned already, check we're still locked */
407 if (fepriv->state & FESTATE_TUNED) {
408 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
409
410 /* we're tuned, and the lock is still good... */
411 if (s & FE_HAS_LOCK) {
412 return;
413 } else { /* if we _WERE_ tuned, but now don't have a lock */
414 fepriv->state = FESTATE_ZIGZAG_FAST;
415 fepriv->started_auto_step = fepriv->auto_step;
416 fepriv->check_wrapped = 0;
417 }
418 }
419
420 /* don't actually do anything if we're in the LOSTLOCK state,
421 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
422 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 423 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 424 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
425 return;
426 }
427
428 /* don't do anything if we're in the DISEQC state, since this
429 * might be someone with a motorized dish controlled by DISEQC.
430 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
431 if (fepriv->state & FESTATE_DISEQC) {
432 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
433 return;
434 }
435
436 /* if we're in the RETUNE state, set everything up for a brand
437 * new scan, keeping the current inversion setting, as the next
438 * tune is _very_ likely to require the same */
439 if (fepriv->state & FESTATE_RETUNE) {
440 fepriv->lnb_drift = 0;
441 fepriv->auto_step = 0;
442 fepriv->auto_sub_step = 0;
443 fepriv->started_auto_step = 0;
444 fepriv->check_wrapped = 0;
445 }
446
447 /* fast zigzag. */
448 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
449 fepriv->delay = fepriv->min_delay;
450
451 /* peform a tune */
452 if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) {
453 /* OK, if we've run out of trials at the fast speed.
454 * Drop back to slow for the _next_ attempt */
455 fepriv->state = FESTATE_SEARCHING_SLOW;
456 fepriv->started_auto_step = fepriv->auto_step;
457 return;
458 }
459 fepriv->check_wrapped = 1;
460
461 /* if we've just retuned, enter the ZIGZAG_FAST state.
462 * This ensures we cannot return from an
463 * FE_SET_FRONTEND ioctl before the first frontend tune
464 * occurs */
465 if (fepriv->state & FESTATE_RETUNE) {
466 fepriv->state = FESTATE_TUNING_FAST;
467 }
468 }
469
470 /* slow zigzag */
471 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
472 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
473
474 /* Note: don't bother checking for wrapping; we stay in this
475 * state until we get a lock */
476 dvb_frontend_swzigzag_autotune(fe, 0);
477 }
478}
479
1da177e4
LT		 480static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
481{
0c53c70f 482 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 483
484 if (fepriv->exit)
485 return 1;
486
487 if (fepriv->dvbdev->writers == 1)
cc89c229 488 if (time_after(jiffies, fepriv->release_jiffies +
36cb557a 489 dvb_shutdown_timeout * HZ))
1da177e4
LT		 490 return 1;
491
492 return 0;
493}
494
495static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
496{
0c53c70f 497 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 498
499 if (fepriv->wakeup) {
500 fepriv->wakeup = 0;
501 return 1;
502 }
503 return dvb_frontend_is_exiting(fe);
504}
505
506static void dvb_frontend_wakeup(struct dvb_frontend *fe)
507{
0c53c70f 508 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 509
510 fepriv->wakeup = 1;
511 wake_up_interruptible(&fepriv->wait_queue);
512}
513
1da177e4
LT		 514static int dvb_frontend_thread(void *data)
515{
0c53c70f
JS		 516 struct dvb_frontend *fe = data;
517 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 518 unsigned long timeout;
1da177e4 519 fe_status_t s;
c59e7870
MA		 520 enum dvbfe_algo algo;
521
36cb557a 522 struct dvb_frontend_parameters *params;
1da177e4 523
46b4f7c1 524 dprintk("%s\n", __func__);
1da177e4 525
36cb557a
AQ		 526 fepriv->check_wrapped = 0;
527 fepriv->quality = 0;
528 fepriv->delay = 3*HZ;
1da177e4 529 fepriv->status = 0;
1da177e4 530 fepriv->wakeup = 0;
04c56d0e
AQ		 531 fepriv->reinitialise = 0;
532
533 dvb_frontend_init(fe);
1da177e4 534
83144186 535 set_freezable();
1da177e4
LT		 536 while (1) {
537 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 538restart:
1da177e4 539 timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 540 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
541 || freezing(current),
8eec1429
HP		 542 fepriv->delay);
543
544 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4
LT		 545 /* got signal or quitting */
546 break;
547 }
548
8eec1429 549 if (try_to_freeze())
6591691b 550 goto restart;
1da177e4
LT		 551
552 if (down_interruptible(&fepriv->sem))
553 break;
554
86f40cc3
AQ		 555 if (fepriv->reinitialise) {
556 dvb_frontend_init(fe);
64454016 557 if (fepriv->tone != -1) {
dea74869 558 fe->ops.set_tone(fe, fepriv->tone);
64454016
AQ		 559 }
560 if (fepriv->voltage != -1) {
dea74869 561 fe->ops.set_voltage(fe, fepriv->voltage);
64454016 562 }
86f40cc3
AQ		 563 fepriv->reinitialise = 0;
564 }
565
36cb557a 566 /* do an iteration of the tuning loop */
d772bd03 567 if (fe->ops.get_frontend_algo) {
c59e7870
MA		 568 algo = fe->ops.get_frontend_algo(fe);
569 switch (algo) {
570 case DVBFE_ALGO_HW:
571 dprintk("%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
572 params = NULL; /* have we been asked to RETUNE ? */
573
d772bd03 574 if (fepriv->state & FESTATE_RETUNE) {
c59e7870 575 dprintk("%s: Retune requested, FESTATE_RETUNE\n", __func__);
d772bd03
MA		 576 fepriv->state = FESTATE_TUNED;
577 }
578
c59e7870
MA		 579 if (fe->ops.tune)
580 fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
581
d772bd03 582 if (s != fepriv->status) {
c59e7870 583 dprintk("%s: state changed, adding current state\n", __func__);
d772bd03
MA		 584 dvb_frontend_add_event(fe, s);
585 fepriv->status = s;
586 }
c59e7870
MA		 587 break;
588 case DVBFE_ALGO_SW:
589 dprintk("%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
70d90635 590 dvb_frontend_swzigzag(fe);
c59e7870
MA		 591 break;
592 case DVBFE_ALGO_CUSTOM:
593 params = NULL; /* have we been asked to RETUNE ? */
594 dprintk("%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
595 if (fepriv->state & FESTATE_RETUNE) {
596 dprintk("%s: Retune requested, FESTAT_RETUNE\n", __func__);
597 fepriv->state = FESTATE_TUNED;
598 }
599 /* Case where we are going to search for a carrier
600 * User asked us to retune again for some reason, possibly
601 * requesting a search with a new set of parameters
602 */
603 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
604 if (fe->ops.search)
605 fepriv->algo_status = fe->ops.search(fe, &fepriv->parameters);
606 /* We did do a search as was requested, the flags are
607 * now unset as well and has the flags wrt to search.
608 */
609
610 fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
611 }
612 /* Track the carrier if the search was successful */
613 if (fepriv->algo_status == DVBFE_ALGO_SEARCH_SUCCESS) {
614 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_SUCCESS)
615 dprintk("%s: status = DVBFE_ALGO_SEARCH_SUCCESS\n", __func__);
616 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_FAILED)
617 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
618
619 fe->ops.read_status(fe, &s);
620 dvb_frontend_add_event(fe, s); /* update event list */
621 fepriv->status = s;
622 if (fe->ops.track)
623 fe->ops.track(fe, &fepriv->parameters);
624
625 }
626 break;
627 default:
628 dprintk("%s: UNDEFINED ALGO !\n", __func__);
629 break;
630 }
631 } else {
4a4edcca 632 dvb_frontend_swzigzag(fe);
c59e7870 633 }
1da177e4
LT		 634 }
635
608f62d6
OE		 636 if (dvb_powerdown_on_sleep) {
637 if (fe->ops.set_voltage)
638 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869 639 if (fe->ops.tuner_ops.sleep) {
41286d97
DH		 640 if (fe->ops.i2c_gate_ctrl)
641 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 642 fe->ops.tuner_ops.sleep(fe);
643 if (fe->ops.i2c_gate_ctrl)
644 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 645 }
dea74869
PB		 646 if (fe->ops.sleep)
647 fe->ops.sleep(fe);
1da177e4
LT		 648 }
649
8eec1429 650 fepriv->thread = NULL;
1da177e4
LT		 651 mb();
652
653 dvb_frontend_wakeup(fe);
654 return 0;
655}
656
657static void dvb_frontend_stop(struct dvb_frontend *fe)
658{
0c53c70f 659 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 660
46b4f7c1 661 dprintk ("%s\n", __func__);
1da177e4
LT		 662
663 fepriv->exit = 1;
664 mb();
665
8eec1429 666 if (!fepriv->thread)
1da177e4
LT		 667 return;
668
8eec1429 669 kthread_stop(fepriv->thread);
ca5be9cd 670
8eec1429 671 init_MUTEX (&fepriv->sem);
1da177e4
LT		 672 fepriv->state = FESTATE_IDLE;
673
674 /* paranoia check in case a signal arrived */
8eec1429
HP		 675 if (fepriv->thread)
676 printk("dvb_frontend_stop: warning: thread %p won't exit\n",
677 fepriv->thread);
1da177e4
LT		 678}
679
83b75b04
N		 680s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
681{
682 return ((curtime.tv_usec < lasttime.tv_usec) ?
683 1000000 - lasttime.tv_usec + curtime.tv_usec :
684 curtime.tv_usec - lasttime.tv_usec);
685}
686EXPORT_SYMBOL(timeval_usec_diff);
687
688static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
689{
690 curtime->tv_usec += add_usec;
691 if (curtime->tv_usec >= 1000000) {
692 curtime->tv_usec -= 1000000;
693 curtime->tv_sec++;
694 }
695}
696
697/*
698 * Sleep until gettimeofday() > waketime + add_usec
699 * This needs to be as precise as possible, but as the delay is
700 * usually between 2ms and 32ms, it is done using a scheduled msleep
701 * followed by usleep (normally a busy-wait loop) for the remainder
702 */
703void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
704{
705 struct timeval lasttime;
706 s32 delta, newdelta;
707
708 timeval_usec_add(waketime, add_usec);
709
710 do_gettimeofday(&lasttime);
711 delta = timeval_usec_diff(lasttime, *waketime);
712 if (delta > 2500) {
713 msleep((delta - 1500) / 1000);
714 do_gettimeofday(&lasttime);
715 newdelta = timeval_usec_diff(lasttime, *waketime);
716 delta = (newdelta > delta) ? 0 : newdelta;
717 }
718 if (delta > 0)
719 udelay(delta);
720}
721EXPORT_SYMBOL(dvb_frontend_sleep_until);
722
1da177e4
LT		 723static int dvb_frontend_start(struct dvb_frontend *fe)
724{
725 int ret;
0c53c70f 726 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 727 struct task_struct *fe_thread;
1da177e4 728
46b4f7c1 729 dprintk ("%s\n", __func__);
1da177e4 730
8eec1429 731 if (fepriv->thread) {
1da177e4
LT		 732 if (!fepriv->exit)
733 return 0;
734 else
735 dvb_frontend_stop (fe);
736 }
737
738 if (signal_pending(current))
739 return -EINTR;
740 if (down_interruptible (&fepriv->sem))
741 return -EINTR;
742
743 fepriv->state = FESTATE_IDLE;
744 fepriv->exit = 0;
8eec1429 745 fepriv->thread = NULL;
1da177e4
LT		 746 mb();
747
8eec1429 748 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 749 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 750 if (IS_ERR(fe_thread)) {
751 ret = PTR_ERR(fe_thread);
752 printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
1da177e4
LT		 753 up(&fepriv->sem);
754 return ret;
755 }
8eec1429 756 fepriv->thread = fe_thread;
1da177e4
LT		 757 return 0;
758}
759
c471b331
OE		 760static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
761 u32 *freq_min, u32 *freq_max)
762{
763 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
764
765 if (fe->ops.info.frequency_max == 0)
766 *freq_max = fe->ops.tuner_ops.info.frequency_max;
767 else if (fe->ops.tuner_ops.info.frequency_max == 0)
768 *freq_max = fe->ops.info.frequency_max;
769 else
770 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
771
772 if (*freq_min == 0 || *freq_max == 0)
363c35fc
ST		 773 printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
774 fe->dvb->num,fe->id);
c471b331
OE		 775}
776
1fab46f0
OE		 777static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
778 struct dvb_frontend_parameters *parms)
779{
c471b331
OE		 780 u32 freq_min;
781 u32 freq_max;
782
1fab46f0 783 /* range check: frequency */
c471b331
OE		 784 dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
785 if ((freq_min && parms->frequency < freq_min) ||
786 (freq_max && parms->frequency > freq_max)) {
363c35fc
ST		 787 printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
788 fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max);
1fab46f0
OE		 789 return -EINVAL;
790 }
791
792 /* range check: symbol rate */
793 if (fe->ops.info.type == FE_QPSK) {
794 if ((fe->ops.info.symbol_rate_min &&
795 parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
796 (fe->ops.info.symbol_rate_max &&
797 parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 798 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
799 fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate,
1fab46f0
OE		 800 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
801 return -EINVAL;
802 }
803
804 } else if (fe->ops.info.type == FE_QAM) {
805 if ((fe->ops.info.symbol_rate_min &&
806 parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
807 (fe->ops.info.symbol_rate_max &&
808 parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 809 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
810 fe->dvb->num, fe->id, parms->u.qam.symbol_rate,
1fab46f0
OE		 811 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
812 return -EINVAL;
813 }
814 }
815
816 return 0;
817}
818
56f0680a 819struct dtv_cmds_h dtv_cmds[] = {
e7fee0f3
ST		 820 [DTV_TUNE] = {
821 .name = "DTV_TUNE",
822 .cmd = DTV_TUNE,
6b73eeaf
ST		 823 .set = 1,
824 },
e7fee0f3
ST		 825 [DTV_CLEAR] = {
826 .name = "DTV_CLEAR",
827 .cmd = DTV_CLEAR,
6b73eeaf
ST		 828 .set = 1,
829 },
830
831 /* Set */
363429a0
ST		 832 [DTV_FREQUENCY] = {
833 .name = "DTV_FREQUENCY",
834 .cmd = DTV_FREQUENCY,
6b73eeaf
ST		 835 .set = 1,
836 },
75b7f943
ST		 837 [DTV_BANDWIDTH_HZ] = {
838 .name = "DTV_BANDWIDTH_HZ",
839 .cmd = DTV_BANDWIDTH_HZ,
6b73eeaf
ST		 840 .set = 1,
841 },
363429a0
ST		 842 [DTV_MODULATION] = {
843 .name = "DTV_MODULATION",
844 .cmd = DTV_MODULATION,
6b73eeaf
ST		 845 .set = 1,
846 },
363429a0
ST		 847 [DTV_INVERSION] = {
848 .name = "DTV_INVERSION",
849 .cmd = DTV_INVERSION,
6b73eeaf
ST		 850 .set = 1,
851 },
363429a0
ST		 852 [DTV_DISEQC_MASTER] = {
853 .name = "DTV_DISEQC_MASTER",
854 .cmd = DTV_DISEQC_MASTER,
6b73eeaf
ST		 855 .set = 1,
856 .buffer = 1,
857 },
363429a0
ST		 858 [DTV_SYMBOL_RATE] = {
859 .name = "DTV_SYMBOL_RATE",
860 .cmd = DTV_SYMBOL_RATE,
6b73eeaf
ST		 861 .set = 1,
862 },
363429a0
ST		 863 [DTV_INNER_FEC] = {
864 .name = "DTV_INNER_FEC",
865 .cmd = DTV_INNER_FEC,
6b73eeaf
ST		 866 .set = 1,
867 },
363429a0
ST		 868 [DTV_VOLTAGE] = {
869 .name = "DTV_VOLTAGE",
870 .cmd = DTV_VOLTAGE,
6b73eeaf
ST		 871 .set = 1,
872 },
363429a0
ST		 873 [DTV_TONE] = {
874 .name = "DTV_TONE",
875 .cmd = DTV_TONE,
6b73eeaf
ST		 876 .set = 1,
877 },
363429a0
ST		 878 [DTV_PILOT] = {
879 .name = "DTV_PILOT",
880 .cmd = DTV_PILOT,
6b73eeaf
ST		 881 .set = 1,
882 },
363429a0
ST		 883 [DTV_ROLLOFF] = {
884 .name = "DTV_ROLLOFF",
885 .cmd = DTV_ROLLOFF,
6b73eeaf
ST		 886 .set = 1,
887 },
363429a0
ST		 888 [DTV_DELIVERY_SYSTEM] = {
889 .name = "DTV_DELIVERY_SYSTEM",
890 .cmd = DTV_DELIVERY_SYSTEM,
6b73eeaf
ST		 891 .set = 1,
892 },
ef526f42
ST		 893 [DTV_HIERARCHY] = {
894 .name = "DTV_HIERARCHY",
895 .cmd = DTV_HIERARCHY,
896 .set = 1,
897 },
a4de91be
ST		 898 [DTV_CODE_RATE_HP] = {
899 .name = "DTV_CODE_RATE_HP",
900 .cmd = DTV_CODE_RATE_HP,
901 .set = 1,
902 },
903 [DTV_CODE_RATE_LP] = {
904 .name = "DTV_CODE_RATE_LP",
905 .cmd = DTV_CODE_RATE_LP,
906 .set = 1,
907 },
b87625f0
ST		 908 [DTV_GUARD_INTERVAL] = {
909 .name = "DTV_GUARD_INTERVAL",
910 .cmd = DTV_GUARD_INTERVAL,
911 .set = 1,
912 },
913 [DTV_TRANSMISSION_MODE] = {
914 .name = "DTV_TRANSMISSION_MODE",
915 .cmd = DTV_TRANSMISSION_MODE,
916 .set = 1,
917 },
6b73eeaf 918 /* Get */
363429a0
ST		 919 [DTV_DISEQC_SLAVE_REPLY] = {
920 .name = "DTV_DISEQC_SLAVE_REPLY",
921 .cmd = DTV_DISEQC_SLAVE_REPLY,
6b73eeaf
ST		 922 .set = 0,
923 .buffer = 1,
924 },
eacf8d8d
ST		 925 [DTV_API_VERSION] = {
926 .name = "DTV_API_VERSION",
927 .cmd = DTV_API_VERSION,
928 .set = 0,
929 },
a4de91be
ST		 930 [DTV_CODE_RATE_HP] = {
931 .name = "DTV_CODE_RATE_HP",
932 .cmd = DTV_CODE_RATE_HP,
933 .set = 0,
934 },
935 [DTV_CODE_RATE_LP] = {
936 .name = "DTV_CODE_RATE_LP",
937 .cmd = DTV_CODE_RATE_LP,
938 .set = 0,
939 },
b87625f0
ST		 940 [DTV_GUARD_INTERVAL] = {
941 .name = "DTV_GUARD_INTERVAL",
942 .cmd = DTV_GUARD_INTERVAL,
943 .set = 0,
944 },
945 [DTV_TRANSMISSION_MODE] = {
946 .name = "DTV_TRANSMISSION_MODE",
947 .cmd = DTV_TRANSMISSION_MODE,
948 .set = 0,
949 },
ef526f42
ST		 950 [DTV_HIERARCHY] = {
951 .name = "DTV_HIERARCHY",
952 .cmd = DTV_HIERARCHY,
953 .set = 0,
954 },
6b73eeaf
ST		 955};
956
e7fee0f3 957void dtv_property_dump(struct dtv_property *tvp)
6b73eeaf
ST		 958{
959 int i;
960
82d7669d 961 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
a1bc84c0 962 printk(KERN_WARNING "%s: tvp.cmd = 0x%08x undefined\n",
4aae8efb
DB		 963 __func__, tvp->cmd);
964 return;
965 }
966
a1bc84c0
ST		 967 dprintk("%s() tvp.cmd = 0x%08x (%s)\n"
968 ,__func__
6b73eeaf 969 ,tvp->cmd
56f0680a 970 ,dtv_cmds[ tvp->cmd ].name);
6b73eeaf 971
56f0680a 972 if(dtv_cmds[ tvp->cmd ].buffer) {
6b73eeaf 973
a1bc84c0
ST		 974 dprintk("%s() tvp.u.buffer.len = 0x%02x\n"
975 ,__func__
6b73eeaf
ST		 976 ,tvp->u.buffer.len);
977
978 for(i = 0; i < tvp->u.buffer.len; i++)
a1bc84c0
ST		 979 dprintk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
980 ,__func__
6b73eeaf
ST		 981 ,i
982 ,tvp->u.buffer.data[i]);
983
984 } else
a1bc84c0 985 dprintk("%s() tvp.u.data = 0x%08x\n", __func__, tvp->u.data);
6b73eeaf
ST		 986}
987
988int is_legacy_delivery_system(fe_delivery_system_t s)
989{
990 if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
3fa37deb
DH		 991 (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS) ||
992 (s == SYS_ATSC))
6b73eeaf
ST		 993 return 1;
994
995 return 0;
996}
997
ee33c525
ST		 998/* Synchronise the legacy tuning parameters into the cache, so that demodulator
999 * drivers can use a single set_frontend tuning function, regardless of whether
1000 * it's being used for the legacy or new API, reducing code and complexity.
1001 */
1002void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
1003{
1004 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1005
1006 c->frequency = p->frequency;
1007 c->inversion = p->inversion;
1008
1009 switch (fe->ops.info.type) {
1010 case FE_QPSK:
e5cefa82
DB		 1011 c->modulation = QPSK; /* implied for DVB-S in legacy API */
1012 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
ee33c525
ST		 1013 c->symbol_rate = p->u.qpsk.symbol_rate;
1014 c->fec_inner = p->u.qpsk.fec_inner;
80a773c9 1015 c->delivery_system = SYS_DVBS;
ee33c525
ST		 1016 break;
1017 case FE_QAM:
1018 c->symbol_rate = p->u.qam.symbol_rate;
1019 c->fec_inner = p->u.qam.fec_inner;
1020 c->modulation = p->u.qam.modulation;
80a773c9 1021 c->delivery_system = SYS_DVBC_ANNEX_AC;
ee33c525
ST		 1022 break;
1023 case FE_OFDM:
75b7f943
ST		 1024 if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
1025 c->bandwidth_hz = 6000000;
1026 else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
1027 c->bandwidth_hz = 7000000;
1028 else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
1029 c->bandwidth_hz = 8000000;
1030 else
1031 /* Including BANDWIDTH_AUTO */
1032 c->bandwidth_hz = 0;
ee33c525
ST		 1033 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1034 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1035 c->modulation = p->u.ofdm.constellation;
1036 c->transmission_mode = p->u.ofdm.transmission_mode;
1037 c->guard_interval = p->u.ofdm.guard_interval;
1038 c->hierarchy = p->u.ofdm.hierarchy_information;
80a773c9 1039 c->delivery_system = SYS_DVBT;
ee33c525
ST		 1040 break;
1041 case FE_ATSC:
1042 c->modulation = p->u.vsb.modulation;
80a773c9
ST		 1043 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1044 c->delivery_system = SYS_ATSC;
1045 else
1046 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525
ST		 1047 break;
1048 }
1049}
1050
d5748f10
ST		 1051/* Ensure the cached values are set correctly in the frontend
1052 * legacy tuning structures, for the advanced tuning API.
1053 */
1054void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
6b73eeaf 1055{
d5748f10
ST		 1056 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1057 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1058 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1059
d5748f10
ST		 1060 p->frequency = c->frequency;
1061 p->inversion = c->inversion;
6b73eeaf 1062
d5748f10
ST		 1063 switch (fe->ops.info.type) {
1064 case FE_QPSK:
a1bc84c0 1065 dprintk("%s() Preparing QPSK req\n", __func__);
d5748f10
ST		 1066 p->u.qpsk.symbol_rate = c->symbol_rate;
1067 p->u.qpsk.fec_inner = c->fec_inner;
80a773c9 1068 c->delivery_system = SYS_DVBS;
d5748f10
ST		 1069 break;
1070 case FE_QAM:
a1bc84c0 1071 dprintk("%s() Preparing QAM req\n", __func__);
d5748f10
ST		 1072 p->u.qam.symbol_rate = c->symbol_rate;
1073 p->u.qam.fec_inner = c->fec_inner;
1074 p->u.qam.modulation = c->modulation;
80a773c9 1075 c->delivery_system = SYS_DVBC_ANNEX_AC;
d5748f10
ST		 1076 break;
1077 case FE_OFDM:
a1bc84c0 1078 dprintk("%s() Preparing OFDM req\n", __func__);
75b7f943
ST		 1079 if (c->bandwidth_hz == 6000000)
1080 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1081 else if (c->bandwidth_hz == 7000000)
1082 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1083 else if (c->bandwidth_hz == 8000000)
1084 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
1085 else
1086 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 1087 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1088 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1089 p->u.ofdm.constellation = c->modulation;
1090 p->u.ofdm.transmission_mode = c->transmission_mode;
1091 p->u.ofdm.guard_interval = c->guard_interval;
1092 p->u.ofdm.hierarchy_information = c->hierarchy;
80a773c9 1093 c->delivery_system = SYS_DVBT;
d5748f10
ST		 1094 break;
1095 case FE_ATSC:
a1bc84c0 1096 dprintk("%s() Preparing VSB req\n", __func__);
d5748f10 1097 p->u.vsb.modulation = c->modulation;
80a773c9
ST		 1098 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1099 c->delivery_system = SYS_ATSC;
1100 else
1101 c->delivery_system = SYS_DVBC_ANNEX_B;
d5748f10
ST		 1102 break;
1103 }
1104}
1105
1106/* Ensure the cached values are set correctly in the frontend
1107 * legacy tuning structures, for the legacy tuning API.
1108 */
1109void dtv_property_adv_params_sync(struct dvb_frontend *fe)
1110{
56f0680a 1111 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1112 struct dvb_frontend_private *fepriv = fe->frontend_priv;
d5748f10 1113 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1114
d5748f10
ST		 1115 p->frequency = c->frequency;
1116 p->inversion = c->inversion;
1117
1118 switch(c->modulation) {
0a6393ae
ST		 1119 case PSK_8:
1120 case APSK_16:
97854829 1121 case APSK_32:
0a6393ae 1122 case QPSK:
d5748f10
ST		 1123 p->u.qpsk.symbol_rate = c->symbol_rate;
1124 p->u.qpsk.fec_inner = c->fec_inner;
1125 break;
1126 default:
1127 break;
1128 }
1129
1130 if(c->delivery_system == SYS_ISDBT) {
1131 /* Fake out a generic DVB-T request so we pass validation in the ioctl */
1132 p->frequency = c->frequency;
1133 p->inversion = INVERSION_AUTO;
1134 p->u.ofdm.constellation = QAM_AUTO;
1135 p->u.ofdm.code_rate_HP = FEC_AUTO;
1136 p->u.ofdm.code_rate_LP = FEC_AUTO;
1137 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
1138 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
1139 p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
1140 p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
1141 }
1142}
1143
1144void dtv_property_cache_submit(struct dvb_frontend *fe)
1145{
1146 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1147
d5748f10
ST		 1148 /* For legacy delivery systems we don't need the delivery_system to
1149 * be specified, but we populate the older structures from the cache
1150 * so we can call set_frontend on older drivers.
1151 */
6b73eeaf 1152 if(is_legacy_delivery_system(c->delivery_system)) {
6b73eeaf 1153
a1bc84c0 1154 dprintk("%s() legacy, modulation = %d\n", __func__, c->modulation);
d5748f10 1155 dtv_property_legacy_params_sync(fe);
6b73eeaf 1156
6b73eeaf 1157 } else {
a1bc84c0 1158 dprintk("%s() adv, modulation = %d\n", __func__, c->modulation);
d5748f10 1159
6b73eeaf
ST		 1160 /* For advanced delivery systems / modulation types ...
1161 * we seed the lecacy dvb_frontend_parameters structure
1162 * so that the sanity checking code later in the IOCTL processing
1163 * can validate our basic frequency ranges, symbolrates, modulation
1164 * etc.
1165 */
d5748f10 1166 dtv_property_adv_params_sync(fe);
6b73eeaf 1167 }
6b73eeaf
ST		 1168}
1169
13c97bf5
ST		 1170static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1171 unsigned int cmd, void *parg);
1172static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1173 unsigned int cmd, void *parg);
1174
363429a0
ST		 1175int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp,
1176 struct inode *inode, struct file *file)
1177{
1178 int r = 0;
1179
363429a0
ST		 1180 dtv_property_dump(tvp);
1181
bfbf2dae
ST		 1182 /* Allow the frontend to validate incoming properties */
1183 if (fe->ops.get_property)
1184 r = fe->ops.get_property(fe, tvp);
1185
1186 if (r < 0)
1187 return r;
1188
363429a0
ST		 1189 switch(tvp->cmd) {
1190 case DTV_FREQUENCY:
1191 tvp->u.data = fe->dtv_property_cache.frequency;
1192 break;
1193 case DTV_MODULATION:
1194 tvp->u.data = fe->dtv_property_cache.modulation;
1195 break;
75b7f943
ST		 1196 case DTV_BANDWIDTH_HZ:
1197 tvp->u.data = fe->dtv_property_cache.bandwidth_hz;
363429a0
ST		 1198 break;
1199 case DTV_INVERSION:
1200 tvp->u.data = fe->dtv_property_cache.inversion;
1201 break;
1202 case DTV_SYMBOL_RATE:
1203 tvp->u.data = fe->dtv_property_cache.symbol_rate;
1204 break;
1205 case DTV_INNER_FEC:
1206 tvp->u.data = fe->dtv_property_cache.fec_inner;
1207 break;
1208 case DTV_PILOT:
1209 tvp->u.data = fe->dtv_property_cache.pilot;
1210 break;
1211 case DTV_ROLLOFF:
1212 tvp->u.data = fe->dtv_property_cache.rolloff;
1213 break;
1214 case DTV_DELIVERY_SYSTEM:
1215 tvp->u.data = fe->dtv_property_cache.delivery_system;
1216 break;
363429a0
ST		 1217 case DTV_VOLTAGE:
1218 tvp->u.data = fe->dtv_property_cache.voltage;
1219 break;
1220 case DTV_TONE:
1221 tvp->u.data = fe->dtv_property_cache.sectone;
1222 break;
eacf8d8d
ST		 1223 case DTV_API_VERSION:
1224 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1225 break;
a4de91be
ST		 1226 case DTV_CODE_RATE_HP:
1227 tvp->u.data = fe->dtv_property_cache.code_rate_HP;
1228 break;
1229 case DTV_CODE_RATE_LP:
1230 tvp->u.data = fe->dtv_property_cache.code_rate_LP;
1231 break;
b87625f0
ST		 1232 case DTV_GUARD_INTERVAL:
1233 tvp->u.data = fe->dtv_property_cache.guard_interval;
1234 break;
1235 case DTV_TRANSMISSION_MODE:
1236 tvp->u.data = fe->dtv_property_cache.transmission_mode;
1237 break;
ef526f42
ST		 1238 case DTV_HIERARCHY:
1239 tvp->u.data = fe->dtv_property_cache.hierarchy;
1240 break;
363429a0
ST		 1241 default:
1242 r = -1;
1243 }
1244
1245 return r;
1246}
1247
1248int dtv_property_process_set(struct dvb_frontend *fe, struct dtv_property *tvp,
13c97bf5 1249 struct inode *inode, struct file *file)
6b73eeaf
ST		 1250{
1251 int r = 0;
13c97bf5 1252 struct dvb_frontend_private *fepriv = fe->frontend_priv;
56f0680a 1253 dtv_property_dump(tvp);
6b73eeaf 1254
bfbf2dae
ST		 1255 /* Allow the frontend to validate incoming properties */
1256 if (fe->ops.set_property)
1257 r = fe->ops.set_property(fe, tvp);
1258
1259 if (r < 0)
1260 return r;
1261
6b73eeaf 1262 switch(tvp->cmd) {
e7fee0f3 1263 case DTV_CLEAR:
6b73eeaf
ST		 1264 /* Reset a cache of data specific to the frontend here. This does
1265 * not effect hardware.
1266 */
a1bc84c0 1267 dprintk("%s() Flushing property cache\n", __func__);
56f0680a 1268 memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties));
e7fee0f3 1269 fe->dtv_property_cache.state = tvp->cmd;
56f0680a 1270 fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;
6b73eeaf 1271 break;
e7fee0f3 1272 case DTV_TUNE:
6b73eeaf 1273 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1274 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1275 * ioctl.
6b73eeaf 1276 */
e7fee0f3 1277 fe->dtv_property_cache.state = tvp->cmd;
a1bc84c0 1278 dprintk("%s() Finalised property cache\n", __func__);
d5748f10
ST		 1279 dtv_property_cache_submit(fe);
1280
13c97bf5
ST		 1281 r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
1282 &fepriv->parameters);
6b73eeaf 1283 break;
363429a0 1284 case DTV_FREQUENCY:
56f0680a 1285 fe->dtv_property_cache.frequency = tvp->u.data;
6b73eeaf 1286 break;
363429a0 1287 case DTV_MODULATION:
56f0680a 1288 fe->dtv_property_cache.modulation = tvp->u.data;
6b73eeaf 1289 break;
75b7f943
ST		 1290 case DTV_BANDWIDTH_HZ:
1291 fe->dtv_property_cache.bandwidth_hz = tvp->u.data;
6b73eeaf 1292 break;
363429a0 1293 case DTV_INVERSION:
56f0680a 1294 fe->dtv_property_cache.inversion = tvp->u.data;
6b73eeaf 1295 break;
363429a0 1296 case DTV_SYMBOL_RATE:
56f0680a 1297 fe->dtv_property_cache.symbol_rate = tvp->u.data;
6b73eeaf 1298 break;
363429a0 1299 case DTV_INNER_FEC:
56f0680a 1300 fe->dtv_property_cache.fec_inner = tvp->u.data;
6b73eeaf 1301 break;
363429a0 1302 case DTV_PILOT:
56f0680a 1303 fe->dtv_property_cache.pilot = tvp->u.data;
6b73eeaf 1304 break;
363429a0 1305 case DTV_ROLLOFF:
56f0680a 1306 fe->dtv_property_cache.rolloff = tvp->u.data;
6b73eeaf 1307 break;
363429a0 1308 case DTV_DELIVERY_SYSTEM:
56f0680a 1309 fe->dtv_property_cache.delivery_system = tvp->u.data;
6b73eeaf 1310 break;
363429a0 1311 case DTV_VOLTAGE:
56f0680a 1312 fe->dtv_property_cache.voltage = tvp->u.data;
13c97bf5 1313 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE,
56f0680a 1314 (void *)fe->dtv_property_cache.voltage);
13c97bf5 1315 break;
363429a0 1316 case DTV_TONE:
56f0680a 1317 fe->dtv_property_cache.sectone = tvp->u.data;
13c97bf5 1318 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE,
56f0680a 1319 (void *)fe->dtv_property_cache.sectone);
13c97bf5 1320 break;
a4de91be
ST		 1321 case DTV_CODE_RATE_HP:
1322 fe->dtv_property_cache.code_rate_HP = tvp->u.data;
1323 break;
1324 case DTV_CODE_RATE_LP:
1325 fe->dtv_property_cache.code_rate_LP = tvp->u.data;
1326 break;
b87625f0
ST		 1327 case DTV_GUARD_INTERVAL:
1328 fe->dtv_property_cache.guard_interval = tvp->u.data;
1329 break;
1330 case DTV_TRANSMISSION_MODE:
1331 fe->dtv_property_cache.transmission_mode = tvp->u.data;
1332 break;
ef526f42
ST		 1333 case DTV_HIERARCHY:
1334 fe->dtv_property_cache.hierarchy = tvp->u.data;
1335 break;
363429a0
ST		 1336 default:
1337 r = -1;
6b73eeaf
ST		 1338 }
1339
13c97bf5 1340 return r;
6b73eeaf
ST		 1341}
1342
1da177e4
LT		 1343static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
1344 unsigned int cmd, void *parg)
1345{
1346 struct dvb_device *dvbdev = file->private_data;
1347 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1348 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1349 int err = -EOPNOTSUPP;
1350
46b4f7c1 1351 dprintk ("%s\n", __func__);
1da177e4 1352
813ce47c 1353 if (fepriv->exit)
1da177e4
LT		 1354 return -ENODEV;
1355
1356 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1357 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1358 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1359 return -EPERM;
1360
1361 if (down_interruptible (&fepriv->sem))
1362 return -ERESTARTSYS;
1363
13c97bf5
ST		 1364 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
1365 err = dvb_frontend_ioctl_properties(inode, file, cmd, parg);
4dd88bec
ST		 1366 else {
1367 fe->dtv_property_cache.state = DTV_UNDEFINED;
13c97bf5 1368 err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg);
4dd88bec 1369 }
13c97bf5
ST		 1370
1371 up(&fepriv->sem);
1372 return err;
1373}
1374
1375static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1376 unsigned int cmd, void *parg)
1377{
1378 struct dvb_device *dvbdev = file->private_data;
1379 struct dvb_frontend *fe = dvbdev->priv;
e6f9ec86 1380 int err = 0;
e7fee0f3
ST		 1381
1382 struct dtv_properties *tvps = NULL;
1383 struct dtv_property *tvp = NULL;
1384 int i;
13c97bf5
ST		 1385
1386 dprintk("%s\n", __func__);
1387
6b73eeaf 1388 if(cmd == FE_SET_PROPERTY) {
e7fee0f3 1389 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1390
a1bc84c0
ST		 1391 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1392 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 1393
1394 /* Put an arbitrary limit on the number of messages that can
1395 * be sent at once */
6068f506 1396 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 1397 return -EINVAL;
1398
1399 tvp = (struct dtv_property *) kmalloc(tvps->num *
1400 sizeof(struct dtv_property), GFP_KERNEL);
1401 if (!tvp) {
1402 err = -ENOMEM;
1403 goto out;
6b73eeaf
ST		 1404 }
1405
e7fee0f3
ST		 1406 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1407 err = -EFAULT;
1408 goto out;
1409 }
1410
d48cb402
ST		 1411 for (i = 0; i < tvps->num; i++) {
1412 (tvp + i)->result = dtv_property_process_set(fe, tvp + i, inode, file);
1413 err |= (tvp + i)->result;
1414 }
e7fee0f3 1415
a1bc84c0
ST		 1416 if(fe->dtv_property_cache.state == DTV_TUNE)
1417 dprintk("%s() Property cache is full, tuning\n", __func__);
bfbf2dae 1418
363429a0
ST		 1419 } else
1420 if(cmd == FE_GET_PROPERTY) {
363429a0
ST		 1421
1422 tvps = (struct dtv_properties __user *)parg;
1423
a1bc84c0
ST		 1424 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1425 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 1426
1427 /* Put an arbitrary limit on the number of messages that can
1428 * be sent at once */
6068f506 1429 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 1430 return -EINVAL;
1431
1432 tvp = (struct dtv_property *) kmalloc(tvps->num *
1433 sizeof(struct dtv_property), GFP_KERNEL);
1434 if (!tvp) {
1435 err = -ENOMEM;
1436 goto out;
1437 }
1438
1439 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1440 err = -EFAULT;
1441 goto out;
1442 }
1443
d48cb402
ST		 1444 for (i = 0; i < tvps->num; i++) {
1445 (tvp + i)->result = dtv_property_process_get(fe, tvp + i, inode, file);
1446 err |= (tvp + i)->result;
1447 }
363429a0
ST		 1448
1449 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1450 err = -EFAULT;
1451 goto out;
1452 }
1453
363429a0
ST		 1454 } else
1455 err = -EOPNOTSUPP;
1456
e7fee0f3
ST		 1457out:
1458 kfree(tvp);
13c97bf5
ST		 1459 return err;
1460}
1461
1462static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1463 unsigned int cmd, void *parg)
1464{
1465 struct dvb_device *dvbdev = file->private_data;
1466 struct dvb_frontend *fe = dvbdev->priv;
1467 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1468 int err = -EOPNOTSUPP;
1469
1da177e4
LT		 1470 switch (cmd) {
1471 case FE_GET_INFO: {
0c53c70f 1472 struct dvb_frontend_info* info = parg;
dea74869 1473 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
c471b331 1474 dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4
LT		 1475
1476 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
1477 * do it, it is done for it. */
1478 info->caps |= FE_CAN_INVERSION_AUTO;
1479 err = 0;
1480 break;
1481 }
1482
6757ccc5
PB		 1483 case FE_READ_STATUS: {
1484 fe_status_t* status = parg;
1485
1486 /* if retune was requested but hasn't occured yet, prevent
1487 * that user get signal state from previous tuning */
1488 if(fepriv->state == FESTATE_RETUNE) {
1489 err=0;
1490 *status = 0;
1491 break;
1492 }
1493
dea74869
PB		 1494 if (fe->ops.read_status)
1495 err = fe->ops.read_status(fe, status);
1da177e4 1496 break;
6757ccc5 1497 }
1da177e4 1498 case FE_READ_BER:
dea74869
PB		 1499 if (fe->ops.read_ber)
1500 err = fe->ops.read_ber(fe, (__u32*) parg);
1da177e4
LT		 1501 break;
1502
1503 case FE_READ_SIGNAL_STRENGTH:
dea74869
PB		 1504 if (fe->ops.read_signal_strength)
1505 err = fe->ops.read_signal_strength(fe, (__u16*) parg);
1da177e4
LT		 1506 break;
1507
1508 case FE_READ_SNR:
dea74869
PB		 1509 if (fe->ops.read_snr)
1510 err = fe->ops.read_snr(fe, (__u16*) parg);
1da177e4
LT		 1511 break;
1512
1513 case FE_READ_UNCORRECTED_BLOCKS:
dea74869
PB		 1514 if (fe->ops.read_ucblocks)
1515 err = fe->ops.read_ucblocks(fe, (__u32*) parg);
1da177e4
LT		 1516 break;
1517
1518
1519 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 1520 if (fe->ops.diseqc_reset_overload) {
1521 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 1522 fepriv->state = FESTATE_DISEQC;
1523 fepriv->status = 0;
1524 }
1525 break;
1526
1527 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 1528 if (fe->ops.diseqc_send_master_cmd) {
1529 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 1530 fepriv->state = FESTATE_DISEQC;
1531 fepriv->status = 0;
1532 }
1533 break;
1534
1535 case FE_DISEQC_SEND_BURST:
dea74869
PB		 1536 if (fe->ops.diseqc_send_burst) {
1537 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 1538 fepriv->state = FESTATE_DISEQC;
1539 fepriv->status = 0;
1540 }
1541 break;
1542
1543 case FE_SET_TONE:
dea74869
PB		 1544 if (fe->ops.set_tone) {
1545 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 1546 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 1547 fepriv->state = FESTATE_DISEQC;
1548 fepriv->status = 0;
1549 }
1550 break;
1551
1552 case FE_SET_VOLTAGE:
dea74869
PB		 1553 if (fe->ops.set_voltage) {
1554 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 1555 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 1556 fepriv->state = FESTATE_DISEQC;
1557 fepriv->status = 0;
1558 }
1559 break;
1560
1561 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 1562 if (fe->ops.dishnetwork_send_legacy_command) {
1563 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 1564 fepriv->state = FESTATE_DISEQC;
1565 fepriv->status = 0;
dea74869 1566 } else if (fe->ops.set_voltage) {
83b75b04
N		 1567 /*
1568 * NOTE: This is a fallback condition. Some frontends
1569 * (stv0299 for instance) take longer than 8msec to
1570 * respond to a set_voltage command. Those switches
1571 * need custom routines to switch properly. For all
1572 * other frontends, the following shoule work ok.
1573 * Dish network legacy switches (as used by Dish500)
1574 * are controlled by sending 9-bit command words
1575 * spaced 8msec apart.
1576 * the actual command word is switch/port dependant
1577 * so it is up to the userspace application to send
1578 * the right command.
1579 * The command must always start with a '0' after
1580 * initialization, so parg is 8 bits and does not
1581 * include the initialization or start bit
1582 */
c6eb8eaf 1583 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 1584 struct timeval nexttime;
1585 struct timeval tv[10];
1586 int i;
1587 u8 last = 1;
1588 if (dvb_frontend_debug)
c6eb8eaf 1589 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 1590 do_gettimeofday(&nexttime);
1591 if (dvb_frontend_debug)
1592 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
1593 /* before sending a command, initialize by sending
1594 * a 32ms 18V to the switch
1595 */
dea74869 1596 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 1597 dvb_frontend_sleep_until(&nexttime, 32000);
1598
1599 for (i = 0; i < 9; i++) {
1600 if (dvb_frontend_debug)
1601 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 1602 if ((swcmd & 0x01) != last) {
83b75b04 1603 /* set voltage to (last ? 13V : 18V) */
dea74869 1604 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 1605 last = (last) ? 0 : 1;
1606 }
c6eb8eaf 1607 swcmd = swcmd >> 1;
83b75b04
N		 1608 if (i != 8)
1609 dvb_frontend_sleep_until(&nexttime, 8000);
1610 }
1611 if (dvb_frontend_debug) {
1612 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 1613 __func__, fe->dvb->num);
83b75b04
N		 1614 for (i = 1; i < 10; i++)
1615 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
1616 }
1617 err = 0;
1618 fepriv->state = FESTATE_DISEQC;
1619 fepriv->status = 0;
1da177e4
LT		 1620 }
1621 break;
1622
1623 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 1624 if (fe->ops.diseqc_recv_slave_reply)
1625 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 1626 break;
1627
1628 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 1629 if (fe->ops.enable_high_lnb_voltage)
1630 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 1631 break;
1632
1633 case FE_SET_FRONTEND: {
1634 struct dvb_frontend_tune_settings fetunesettings;
1635
e7fee0f3 1636 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf
ST		 1637 if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) {
1638 err = -EINVAL;
1639 break;
1640 }
1641 } else {
1642 if (dvb_frontend_check_parameters(fe, parg) < 0) {
1643 err = -EINVAL;
1644 break;
1645 }
1fab46f0 1646
6b73eeaf
ST		 1647 memcpy (&fepriv->parameters, parg,
1648 sizeof (struct dvb_frontend_parameters));
1d78cac4 1649 dtv_property_cache_sync(fe, &fepriv->parameters);
6b73eeaf 1650 }
1da177e4
LT		 1651
1652 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
1653 memcpy(&fetunesettings.parameters, parg,
1654 sizeof (struct dvb_frontend_parameters));
1655
1656 /* force auto frequency inversion if requested */
1657 if (dvb_force_auto_inversion) {
1658 fepriv->parameters.inversion = INVERSION_AUTO;
1659 fetunesettings.parameters.inversion = INVERSION_AUTO;
1660 }
dea74869 1661 if (fe->ops.info.type == FE_OFDM) {
1b3c3714 1662 /* without hierarchical coding code_rate_LP is irrelevant,
1da177e4
LT		 1663 * so we tolerate the otherwise invalid FEC_NONE setting */
1664 if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
1665 fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE)
1666 fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
1667 }
1668
1669 /* get frontend-specific tuning settings */
dea74869 1670 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
1da177e4
LT		 1671 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
1672 fepriv->max_drift = fetunesettings.max_drift;
1673 fepriv->step_size = fetunesettings.step_size;
1674 } else {
1675 /* default values */
dea74869 1676 switch(fe->ops.info.type) {
1da177e4
LT		 1677 case FE_QPSK:
1678 fepriv->min_delay = HZ/20;
1679 fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000;
1680 fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000;
1681 break;
1682
1683 case FE_QAM:
1684 fepriv->min_delay = HZ/20;
1685 fepriv->step_size = 0; /* no zigzag */
1686 fepriv->max_drift = 0;
1687 break;
1688
1689 case FE_OFDM:
1690 fepriv->min_delay = HZ/20;
dea74869
PB		 1691 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
1692 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
1da177e4
LT		 1693 break;
1694 case FE_ATSC:
4821fb1d
MA		 1695 fepriv->min_delay = HZ/20;
1696 fepriv->step_size = 0;
1697 fepriv->max_drift = 0;
1da177e4
LT		 1698 break;
1699 }
1700 }
1701 if (dvb_override_tune_delay > 0)
1702 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
1703
1704 fepriv->state = FESTATE_RETUNE;
1705 dvb_frontend_wakeup(fe);
1706 dvb_frontend_add_event(fe, 0);
1707 fepriv->status = 0;
1708 err = 0;
1709 break;
1710 }
1711
1712 case FE_GET_EVENT:
1713 err = dvb_frontend_get_event (fe, parg, file->f_flags);
1714 break;
1715
1716 case FE_GET_FRONTEND:
dea74869 1717 if (fe->ops.get_frontend) {
1da177e4 1718 memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters));
dea74869 1719 err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg);
1da177e4
LT		 1720 }
1721 break;
36cb557a
AQ		 1722
1723 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 1724 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 1725 err = 0;
36cb557a 1726 break;
1da177e4
LT		 1727 };
1728
1da177e4
LT		 1729 return err;
1730}
1731
6b73eeaf 1732
1da177e4
LT		 1733static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
1734{
1735 struct dvb_device *dvbdev = file->private_data;
1736 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1737 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 1738
46b4f7c1 1739 dprintk ("%s\n", __func__);
1da177e4
LT		 1740
1741 poll_wait (file, &fepriv->events.wait_queue, wait);
1742
1743 if (fepriv->events.eventw != fepriv->events.eventr)
1744 return (POLLIN | POLLRDNORM | POLLPRI);
1745
1746 return 0;
1747}
1748
1749static int dvb_frontend_open(struct inode *inode, struct file *file)
1750{
1751 struct dvb_device *dvbdev = file->private_data;
1752 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1753 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 1754 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 1755 int ret;
1756
46b4f7c1 1757 dprintk ("%s\n", __func__);
1da177e4 1758
59b1842d
DB		 1759 if (adapter->mfe_shared) {
1760 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 1761
1762 if (adapter->mfe_dvbdev == NULL)
1763 adapter->mfe_dvbdev = dvbdev;
1764
1765 else if (adapter->mfe_dvbdev != dvbdev) {
1766 struct dvb_device
1767 *mfedev = adapter->mfe_dvbdev;
1768 struct dvb_frontend
1769 *mfe = mfedev->priv;
1770 struct dvb_frontend_private
1771 *mfepriv = mfe->frontend_priv;
1772 int mferetry = (dvb_mfe_wait_time << 1);
1773
1774 mutex_unlock (&adapter->mfe_lock);
1775 while (mferetry-- && (mfedev->users != -1 ||
1776 mfepriv->thread != NULL)) {
1777 if(msleep_interruptible(500)) {
1778 if(signal_pending(current))
1779 return -EINTR;
59b1842d 1780 }
6594690b
DB		 1781 }
1782
1783 mutex_lock (&adapter->mfe_lock);
1784 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 1785 mfedev = adapter->mfe_dvbdev;
1786 mfe = mfedev->priv;
1787 mfepriv = mfe->frontend_priv;
6594690b
DB		 1788 if (mfedev->users != -1 ||
1789 mfepriv->thread != NULL) {
1790 mutex_unlock (&adapter->mfe_lock);
1791 return -EBUSY;
59b1842d 1792 }
6594690b 1793 adapter->mfe_dvbdev = dvbdev;
59b1842d 1794 }
59b1842d
DB		 1795 }
1796 }
1797
48136e1e
OE		 1798 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
1799 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 1800 goto err0;
ba7e6f3e
ST		 1801 }
1802
48136e1e
OE		 1803 if ((ret = dvb_generic_open (inode, file)) < 0)
1804 goto err1;
04c56d0e 1805
48136e1e 1806 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 1807 /* normal tune mode when opened R/W */
1808 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
1809 fepriv->tone = -1;
1810 fepriv->voltage = -1;
1811
1da177e4
LT		 1812 ret = dvb_frontend_start (fe);
1813 if (ret)
48136e1e 1814 goto err2;
1da177e4
LT		 1815
1816 /* empty event queue */
1817 fepriv->events.eventr = fepriv->events.eventw = 0;
1818 }
1819
59b1842d
DB		 1820 if (adapter->mfe_shared)
1821 mutex_unlock (&adapter->mfe_lock);
1da177e4 1822 return ret;
48136e1e
OE		 1823
1824err2:
1825 dvb_generic_release(inode, file);
1826err1:
1827 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
1828 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 1829err0:
1830 if (adapter->mfe_shared)
1831 mutex_unlock (&adapter->mfe_lock);
48136e1e 1832 return ret;
1da177e4
LT		 1833}
1834
1835static int dvb_frontend_release(struct inode *inode, struct file *file)
1836{
1837 struct dvb_device *dvbdev = file->private_data;
1838 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1839 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 1840 int ret;
1da177e4 1841
46b4f7c1 1842 dprintk ("%s\n", __func__);
1da177e4
LT		 1843
1844 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
1845 fepriv->release_jiffies = jiffies;
1846
ca5be9cd
MR		 1847 ret = dvb_generic_release (inode, file);
1848
48136e1e
OE		 1849 if (dvbdev->users == -1) {
1850 if (fepriv->exit == 1) {
1851 fops_put(file->f_op);
1852 file->f_op = NULL;
1853 wake_up(&dvbdev->wait_queue);
1854 }
1855 if (fe->ops.ts_bus_ctrl)
1856 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 1857 }
48136e1e 1858
ca5be9cd 1859 return ret;
1da177e4
LT		 1860}
1861
1862static struct file_operations dvb_frontend_fops = {
1863 .owner = THIS_MODULE,
1864 .ioctl = dvb_generic_ioctl,
1865 .poll = dvb_frontend_poll,
1866 .open = dvb_frontend_open,
1867 .release = dvb_frontend_release
1868};
1869
1870int dvb_register_frontend(struct dvb_adapter* dvb,
1871 struct dvb_frontend* fe)
1872{
1873 struct dvb_frontend_private *fepriv;
1874 static const struct dvb_device dvbdev_template = {
1875 .users = ~0,
1876 .writers = 1,
1877 .readers = (~0)-1,
1878 .fops = &dvb_frontend_fops,
1879 .kernel_ioctl = dvb_frontend_ioctl
1880 };
1881
46b4f7c1 1882 dprintk ("%s\n", __func__);
1da177e4 1883
3593cab5 1884 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 1885 return -ERESTARTSYS;
1886
7408187d 1887 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 1888 if (fe->frontend_priv == NULL) {
3593cab5 1889 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1890 return -ENOMEM;
1891 }
0c53c70f 1892 fepriv = fe->frontend_priv;
1da177e4
LT		 1893
1894 init_MUTEX (&fepriv->sem);
1895 init_waitqueue_head (&fepriv->wait_queue);
1896 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 1897 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 1898 fe->dvb = dvb;
1899 fepriv->inversion = INVERSION_OFF;
1900
363c35fc 1901 printk ("DVB: registering adapter %i frontend %i (%s)...\n",
1da177e4 1902 fe->dvb->num,
363c35fc 1903 fe->id,
dea74869 1904 fe->ops.info.name);
1da177e4
LT		 1905
1906 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
1907 fe, DVB_DEVICE_FRONTEND);
1908
3593cab5 1909 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1910 return 0;
1911}
1912EXPORT_SYMBOL(dvb_register_frontend);
1913
1914int dvb_unregister_frontend(struct dvb_frontend* fe)
1915{
0c53c70f 1916 struct dvb_frontend_private *fepriv = fe->frontend_priv;
46b4f7c1 1917 dprintk ("%s\n", __func__);
1da177e4 1918
57861b43 1919 mutex_lock(&frontend_mutex);
ca5be9cd 1920 dvb_frontend_stop (fe);
57861b43
MR		 1921 mutex_unlock(&frontend_mutex);
1922
1923 if (fepriv->dvbdev->users < -1)
1924 wait_event(fepriv->dvbdev->wait_queue,
1925 fepriv->dvbdev->users==-1);
1926
3593cab5 1927 mutex_lock(&frontend_mutex);
1da177e4 1928 dvb_unregister_device (fepriv->dvbdev);
d9955060 1929
1da177e4
LT		 1930 /* fe is invalid now */
1931 kfree(fepriv);
3593cab5 1932 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1933 return 0;
1934}
1935EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 1936
149ef72d 1937#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 1938void dvb_frontend_detach(struct dvb_frontend* fe)
1939{
1940 void *ptr;
1941
1942 if (fe->ops.release_sec) {
1943 fe->ops.release_sec(fe);
1944 symbol_put_addr(fe->ops.release_sec);
1945 }
1946 if (fe->ops.tuner_ops.release) {
1947 fe->ops.tuner_ops.release(fe);
1948 symbol_put_addr(fe->ops.tuner_ops.release);
1949 }
2426a27e
MK		 1950 if (fe->ops.analog_ops.release) {
1951 fe->ops.analog_ops.release(fe);
1952 symbol_put_addr(fe->ops.analog_ops.release);
1953 }
f52a838b
AQ		 1954 ptr = (void*)fe->ops.release;
1955 if (ptr) {
1956 fe->ops.release(fe);
1957 symbol_put_addr(ptr);
1958 }
1959}
1960#else
1961void dvb_frontend_detach(struct dvb_frontend* fe)
1962{
1963 if (fe->ops.release_sec)
1964 fe->ops.release_sec(fe);
1965 if (fe->ops.tuner_ops.release)
1966 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 1967 if (fe->ops.analog_ops.release)
1968 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 1969 if (fe->ops.release)
1970 fe->ops.release(fe);
1971}
1972#endif
1973EXPORT_SYMBOL(dvb_frontend_detach);
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