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Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[net-next-2.6.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>
4c4cb1b1 34#include <linux/semaphore.h>
1da177e4 35#include <linux/module.h>
1da177e4 36#include <linux/list.h>
7dfb7103 37#include <linux/freezer.h>
cc89c229 38#include <linux/jiffies.h>
16ef8def 39#include <linux/smp_lock.h>
8eec1429 40#include <linux/kthread.h>
1da177e4 41#include <asm/processor.h>
1da177e4
LT		 42
43#include "dvb_frontend.h"
44#include "dvbdev.h"
eacf8d8d 45#include <linux/dvb/version.h>
1da177e4
LT		 46
47static int dvb_frontend_debug;
849be2cd 48static int dvb_shutdown_timeout;
1da177e4
LT		 49static int dvb_force_auto_inversion;
50static int dvb_override_tune_delay;
51static int dvb_powerdown_on_sleep = 1;
59b1842d 52static int dvb_mfe_wait_time = 5;
1da177e4
LT		 53
54module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 55MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 56module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 57MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 58module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 59MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 60module_param(dvb_override_tune_delay, int, 0644);
1da177e4 61MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 62module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 63MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 64module_param(dvb_mfe_wait_time, int, 0644);
65MODULE_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		 66
67#define dprintk if (dvb_frontend_debug) printk
68
69#define FESTATE_IDLE 1
70#define FESTATE_RETUNE 2
71#define FESTATE_TUNING_FAST 4
72#define FESTATE_TUNING_SLOW 8
73#define FESTATE_TUNED 16
74#define FESTATE_ZIGZAG_FAST 32
75#define FESTATE_ZIGZAG_SLOW 64
76#define FESTATE_DISEQC 128
01886255 77#define FESTATE_ERROR 256
1da177e4
LT		 78#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
79#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
80#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
81#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16
MA		 82
83#define FE_ALGO_HW 1
1da177e4
LT		 84/*
85 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
86 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
87 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
88 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
89 * FESTATE_TUNED. The frontend has successfully locked on.
90 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
91 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
92 * FESTATE_DISEQC. A DISEQC command has just been issued.
93 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
94 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
95 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
96 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
97 */
98
e36309f5
MC		 99#define DVB_FE_NO_EXIT 0
100#define DVB_FE_NORMAL_EXIT 1
101#define DVB_FE_DEVICE_REMOVED 2
102
3593cab5 103static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 104
105struct dvb_frontend_private {
106
36cb557a 107 /* thread/frontend values */
1da177e4
LT		 108 struct dvb_device *dvbdev;
109 struct dvb_frontend_parameters parameters;
110 struct dvb_fe_events events;
111 struct semaphore sem;
112 struct list_head list_head;
113 wait_queue_head_t wait_queue;
8eec1429 114 struct task_struct *thread;
1da177e4 115 unsigned long release_jiffies;
36cb557a
AQ		 116 unsigned int exit;
117 unsigned int wakeup;
1da177e4 118 fe_status_t status;
400b7083 119 unsigned long tune_mode_flags;
36cb557a 120 unsigned int delay;
86f40cc3 121 unsigned int reinitialise;
64454016
AQ		 122 int tone;
123 int voltage;
36cb557a
AQ		 124
125 /* swzigzag values */
126 unsigned int state;
127 unsigned int bending;
128 int lnb_drift;
129 unsigned int inversion;
130 unsigned int auto_step;
131 unsigned int auto_sub_step;
132 unsigned int started_auto_step;
133 unsigned int min_delay;
134 unsigned int max_drift;
135 unsigned int step_size;
136 int quality;
137 unsigned int check_wrapped;
c59e7870 138 enum dvbfe_search algo_status;
1da177e4
LT		 139};
140
86f40cc3 141static void dvb_frontend_wakeup(struct dvb_frontend *fe);
1da177e4
LT		 142
143static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
144{
0c53c70f 145 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 146 struct dvb_fe_events *events = &fepriv->events;
147 struct dvb_frontend_event *e;
148 int wp;
149
46b4f7c1 150 dprintk ("%s\n", __func__);
1da177e4 151
03b76123 152 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 153 return;
154
155 wp = (events->eventw + 1) % MAX_EVENT;
156
157 if (wp == events->eventr) {
158 events->overflow = 1;
159 events->eventr = (events->eventr + 1) % MAX_EVENT;
160 }
161
162 e = &events->events[events->eventw];
163
164 memcpy (&e->parameters, &fepriv->parameters,
165 sizeof (struct dvb_frontend_parameters));
166
167 if (status & FE_HAS_LOCK)
dea74869
PB		 168 if (fe->ops.get_frontend)
169 fe->ops.get_frontend(fe, &e->parameters);
1da177e4
LT		 170
171 events->eventw = wp;
172
03b76123 173 mutex_unlock(&events->mtx);
1da177e4
LT		 174
175 e->status = status;
176
177 wake_up_interruptible (&events->wait_queue);
178}
179
180static int dvb_frontend_get_event(struct dvb_frontend *fe,
181 struct dvb_frontend_event *event, int flags)
182{
0c53c70f 183 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 184 struct dvb_fe_events *events = &fepriv->events;
185
46b4f7c1 186 dprintk ("%s\n", __func__);
1da177e4
LT		 187
188 if (events->overflow) {
189 events->overflow = 0;
190 return -EOVERFLOW;
191 }
192
193 if (events->eventw == events->eventr) {
194 int ret;
195
196 if (flags & O_NONBLOCK)
197 return -EWOULDBLOCK;
198
199 up(&fepriv->sem);
200
201 ret = wait_event_interruptible (events->wait_queue,
202 events->eventw != events->eventr);
203
204 if (down_interruptible (&fepriv->sem))
205 return -ERESTARTSYS;
206
207 if (ret < 0)
208 return ret;
209 }
210
03b76123 211 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 212 return -ERESTARTSYS;
213
214 memcpy (event, &events->events[events->eventr],
215 sizeof(struct dvb_frontend_event));
216
217 events->eventr = (events->eventr + 1) % MAX_EVENT;
218
03b76123 219 mutex_unlock(&events->mtx);
1da177e4
LT		 220
221 return 0;
222}
223
224static void dvb_frontend_init(struct dvb_frontend *fe)
225{
363c35fc 226 dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n",
1da177e4 227 fe->dvb->num,
363c35fc 228 fe->id,
dea74869
PB		 229 fe->ops.info.name);
230
231 if (fe->ops.init)
232 fe->ops.init(fe);
233 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 234 if (fe->ops.i2c_gate_ctrl)
235 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 236 fe->ops.tuner_ops.init(fe);
237 if (fe->ops.i2c_gate_ctrl)
238 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 239 }
1da177e4
LT		 240}
241
86f40cc3
AQ		 242void dvb_frontend_reinitialise(struct dvb_frontend *fe)
243{
244 struct dvb_frontend_private *fepriv = fe->frontend_priv;
245
246 fepriv->reinitialise = 1;
247 dvb_frontend_wakeup(fe);
248}
249EXPORT_SYMBOL(dvb_frontend_reinitialise);
250
36cb557a 251static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 252{
36cb557a 253 int q2;
1da177e4 254
46b4f7c1 255 dprintk ("%s\n", __func__);
1da177e4 256
36cb557a
AQ		 257 if (locked)
258 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
259 else
260 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 261
36cb557a
AQ		 262 q2 = fepriv->quality - 128;
263 q2 *= q2;
1da177e4 264
36cb557a 265 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 266}
267
268/**
269 * Performs automatic twiddling of frontend parameters.
270 *
271 * @param fe The frontend concerned.
272 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
273 * @returns Number of complete iterations that have been performed.
274 */
36cb557a 275static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 276{
277 int autoinversion;
278 int ready = 0;
01886255 279 int fe_set_err = 0;
0c53c70f 280 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 281 int original_inversion = fepriv->parameters.inversion;
282 u32 original_frequency = fepriv->parameters.frequency;
283
284 /* are we using autoinversion? */
dea74869 285 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
1da177e4
LT		 286 (fepriv->parameters.inversion == INVERSION_AUTO));
287
288 /* setup parameters correctly */
289 while(!ready) {
290 /* calculate the lnb_drift */
291 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
292
293 /* wrap the auto_step if we've exceeded the maximum drift */
294 if (fepriv->lnb_drift > fepriv->max_drift) {
295 fepriv->auto_step = 0;
296 fepriv->auto_sub_step = 0;
297 fepriv->lnb_drift = 0;
298 }
299
300 /* perform inversion and +/- zigzag */
301 switch(fepriv->auto_sub_step) {
302 case 0:
303 /* try with the current inversion and current drift setting */
304 ready = 1;
305 break;
306
307 case 1:
308 if (!autoinversion) break;
309
310 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
311 ready = 1;
312 break;
313
314 case 2:
315 if (fepriv->lnb_drift == 0) break;
316
317 fepriv->lnb_drift = -fepriv->lnb_drift;
318 ready = 1;
319 break;
320
321 case 3:
322 if (fepriv->lnb_drift == 0) break;
323 if (!autoinversion) break;
324
325 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
326 fepriv->lnb_drift = -fepriv->lnb_drift;
327 ready = 1;
328 break;
329
330 default:
331 fepriv->auto_step++;
332 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
333 break;
334 }
335
336 if (!ready) fepriv->auto_sub_step++;
337 }
338
339 /* if this attempt would hit where we started, indicate a complete
340 * iteration has occurred */
341 if ((fepriv->auto_step == fepriv->started_auto_step) &&
342 (fepriv->auto_sub_step == 0) && check_wrapped) {
343 return 1;
344 }
345
346 dprintk("%s: drift:%i inversion:%i auto_step:%i "
347 "auto_sub_step:%i started_auto_step:%i\n",
46b4f7c1 348 __func__, fepriv->lnb_drift, fepriv->inversion,
1da177e4
LT		 349 fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
350
351 /* set the frontend itself */
352 fepriv->parameters.frequency += fepriv->lnb_drift;
353 if (autoinversion)
354 fepriv->parameters.inversion = fepriv->inversion;
dea74869 355 if (fe->ops.set_frontend)
01886255
JG		 356 fe_set_err = fe->ops.set_frontend(fe, &fepriv->parameters);
357 if (fe_set_err < 0) {
358 fepriv->state = FESTATE_ERROR;
359 return fe_set_err;
360 }
1da177e4
LT		 361
362 fepriv->parameters.frequency = original_frequency;
363 fepriv->parameters.inversion = original_inversion;
364
365 fepriv->auto_sub_step++;
366 return 0;
367}
368
36cb557a
AQ		 369static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
370{
30d9464c 371 fe_status_t s = 0;
01886255 372 int retval = 0;
36cb557a
AQ		 373 struct dvb_frontend_private *fepriv = fe->frontend_priv;
374
375 /* if we've got no parameters, just keep idling */
376 if (fepriv->state & FESTATE_IDLE) {
377 fepriv->delay = 3*HZ;
378 fepriv->quality = 0;
379 return;
380 }
381
382 /* in SCAN mode, we just set the frontend when asked and leave it alone */
383 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
384 if (fepriv->state & FESTATE_RETUNE) {
dea74869 385 if (fe->ops.set_frontend)
01886255
JG		 386 retval = fe->ops.set_frontend(fe,
387 &fepriv->parameters);
388 if (retval < 0)
389 fepriv->state = FESTATE_ERROR;
390 else
391 fepriv->state = FESTATE_TUNED;
36cb557a
AQ		 392 }
393 fepriv->delay = 3*HZ;
394 fepriv->quality = 0;
395 return;
396 }
397
398 /* get the frontend status */
399 if (fepriv->state & FESTATE_RETUNE) {
400 s = 0;
401 } else {
dea74869
PB		 402 if (fe->ops.read_status)
403 fe->ops.read_status(fe, &s);
36cb557a
AQ		 404 if (s != fepriv->status) {
405 dvb_frontend_add_event(fe, s);
406 fepriv->status = s;
407 }
408 }
409
410 /* if we're not tuned, and we have a lock, move to the TUNED state */
411 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
412 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
413 fepriv->state = FESTATE_TUNED;
414
415 /* if we're tuned, then we have determined the correct inversion */
dea74869 416 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
36cb557a
AQ		 417 (fepriv->parameters.inversion == INVERSION_AUTO)) {
418 fepriv->parameters.inversion = fepriv->inversion;
419 }
420 return;
421 }
422
423 /* if we are tuned already, check we're still locked */
424 if (fepriv->state & FESTATE_TUNED) {
425 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
426
427 /* we're tuned, and the lock is still good... */
428 if (s & FE_HAS_LOCK) {
429 return;
430 } else { /* if we _WERE_ tuned, but now don't have a lock */
431 fepriv->state = FESTATE_ZIGZAG_FAST;
432 fepriv->started_auto_step = fepriv->auto_step;
433 fepriv->check_wrapped = 0;
434 }
435 }
436
437 /* don't actually do anything if we're in the LOSTLOCK state,
438 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
439 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 440 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 441 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
442 return;
443 }
444
445 /* don't do anything if we're in the DISEQC state, since this
446 * might be someone with a motorized dish controlled by DISEQC.
447 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
448 if (fepriv->state & FESTATE_DISEQC) {
449 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
450 return;
451 }
452
453 /* if we're in the RETUNE state, set everything up for a brand
454 * new scan, keeping the current inversion setting, as the next
455 * tune is _very_ likely to require the same */
456 if (fepriv->state & FESTATE_RETUNE) {
457 fepriv->lnb_drift = 0;
458 fepriv->auto_step = 0;
459 fepriv->auto_sub_step = 0;
460 fepriv->started_auto_step = 0;
461 fepriv->check_wrapped = 0;
462 }
463
464 /* fast zigzag. */
465 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
466 fepriv->delay = fepriv->min_delay;
467
2030c032 468 /* perform a tune */
01886255
JG		 469 retval = dvb_frontend_swzigzag_autotune(fe,
470 fepriv->check_wrapped);
471 if (retval < 0) {
472 return;
473 } else if (retval) {
36cb557a
AQ		 474 /* OK, if we've run out of trials at the fast speed.
475 * Drop back to slow for the _next_ attempt */
476 fepriv->state = FESTATE_SEARCHING_SLOW;
477 fepriv->started_auto_step = fepriv->auto_step;
478 return;
479 }
480 fepriv->check_wrapped = 1;
481
482 /* if we've just retuned, enter the ZIGZAG_FAST state.
483 * This ensures we cannot return from an
484 * FE_SET_FRONTEND ioctl before the first frontend tune
485 * occurs */
486 if (fepriv->state & FESTATE_RETUNE) {
487 fepriv->state = FESTATE_TUNING_FAST;
488 }
489 }
490
491 /* slow zigzag */
492 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
493 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
494
495 /* Note: don't bother checking for wrapping; we stay in this
496 * state until we get a lock */
497 dvb_frontend_swzigzag_autotune(fe, 0);
498 }
499}
500
1da177e4
LT		 501static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
502{
0c53c70f 503 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 504
e36309f5 505 if (fepriv->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 506 return 1;
507
508 if (fepriv->dvbdev->writers == 1)
cc89c229 509 if (time_after(jiffies, fepriv->release_jiffies +
36cb557a 510 dvb_shutdown_timeout * HZ))
1da177e4
LT		 511 return 1;
512
513 return 0;
514}
515
516static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
517{
0c53c70f 518 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 519
520 if (fepriv->wakeup) {
521 fepriv->wakeup = 0;
522 return 1;
523 }
524 return dvb_frontend_is_exiting(fe);
525}
526
527static void dvb_frontend_wakeup(struct dvb_frontend *fe)
528{
0c53c70f 529 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 530
531 fepriv->wakeup = 1;
532 wake_up_interruptible(&fepriv->wait_queue);
533}
534
1da177e4
LT		 535static int dvb_frontend_thread(void *data)
536{
0c53c70f
JS		 537 struct dvb_frontend *fe = data;
538 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 539 unsigned long timeout;
1da177e4 540 fe_status_t s;
c59e7870
MA		 541 enum dvbfe_algo algo;
542
36cb557a 543 struct dvb_frontend_parameters *params;
1da177e4 544
46b4f7c1 545 dprintk("%s\n", __func__);
1da177e4 546
36cb557a
AQ		 547 fepriv->check_wrapped = 0;
548 fepriv->quality = 0;
549 fepriv->delay = 3*HZ;
1da177e4 550 fepriv->status = 0;
1da177e4 551 fepriv->wakeup = 0;
04c56d0e
AQ		 552 fepriv->reinitialise = 0;
553
554 dvb_frontend_init(fe);
1da177e4 555
83144186 556 set_freezable();
1da177e4
LT		 557 while (1) {
558 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 559restart:
1da177e4 560 timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 561 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
562 || freezing(current),
8eec1429
HP		 563 fepriv->delay);
564
565 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4 566 /* got signal or quitting */
e36309f5 567 fepriv->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 568 break;
569 }
570
8eec1429 571 if (try_to_freeze())
6591691b 572 goto restart;
1da177e4
LT		 573
574 if (down_interruptible(&fepriv->sem))
575 break;
576
86f40cc3
AQ		 577 if (fepriv->reinitialise) {
578 dvb_frontend_init(fe);
64454016 579 if (fepriv->tone != -1) {
dea74869 580 fe->ops.set_tone(fe, fepriv->tone);
64454016
AQ		 581 }
582 if (fepriv->voltage != -1) {
dea74869 583 fe->ops.set_voltage(fe, fepriv->voltage);
64454016 584 }
86f40cc3
AQ		 585 fepriv->reinitialise = 0;
586 }
587
36cb557a 588 /* do an iteration of the tuning loop */
d772bd03 589 if (fe->ops.get_frontend_algo) {
c59e7870
MA		 590 algo = fe->ops.get_frontend_algo(fe);
591 switch (algo) {
592 case DVBFE_ALGO_HW:
593 dprintk("%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
594 params = NULL; /* have we been asked to RETUNE ? */
595
d772bd03 596 if (fepriv->state & FESTATE_RETUNE) {
c59e7870 597 dprintk("%s: Retune requested, FESTATE_RETUNE\n", __func__);
f7c9bf96 598 params = &fepriv->parameters;
d772bd03
MA		 599 fepriv->state = FESTATE_TUNED;
600 }
601
c59e7870
MA		 602 if (fe->ops.tune)
603 fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
604
2fac9a0f 605 if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
c59e7870 606 dprintk("%s: state changed, adding current state\n", __func__);
d772bd03
MA		 607 dvb_frontend_add_event(fe, s);
608 fepriv->status = s;
609 }
c59e7870
MA		 610 break;
611 case DVBFE_ALGO_SW:
612 dprintk("%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
70d90635 613 dvb_frontend_swzigzag(fe);
c59e7870
MA		 614 break;
615 case DVBFE_ALGO_CUSTOM:
616 params = NULL; /* have we been asked to RETUNE ? */
617 dprintk("%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
618 if (fepriv->state & FESTATE_RETUNE) {
619 dprintk("%s: Retune requested, FESTAT_RETUNE\n", __func__);
f04c3ca8 620 params = &fepriv->parameters;
c59e7870
MA		 621 fepriv->state = FESTATE_TUNED;
622 }
623 /* Case where we are going to search for a carrier
624 * User asked us to retune again for some reason, possibly
625 * requesting a search with a new set of parameters
626 */
627 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
7bcbdf38 628 if (fe->ops.search) {
c59e7870
MA		 629 fepriv->algo_status = fe->ops.search(fe, &fepriv->parameters);
630 /* We did do a search as was requested, the flags are
631 * now unset as well and has the flags wrt to search.
632 */
7bcbdf38
AJ		 633 } else {
634 fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
635 }
c59e7870
MA		 636 }
637 /* Track the carrier if the search was successful */
638 if (fepriv->algo_status == DVBFE_ALGO_SEARCH_SUCCESS) {
c59e7870
MA		 639 if (fe->ops.track)
640 fe->ops.track(fe, &fepriv->parameters);
7bcbdf38
AJ		 641 } else {
642 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
643 fepriv->delay = HZ / 2;
644 }
645 fe->ops.read_status(fe, &s);
646 if (s != fepriv->status) {
647 dvb_frontend_add_event(fe, s); /* update event list */
648 fepriv->status = s;
649 if (!(s & FE_HAS_LOCK)) {
650 fepriv->delay = HZ / 10;
651 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
652 } else {
653 fepriv->delay = 60 * HZ;
654 }
c59e7870
MA		 655 }
656 break;
657 default:
658 dprintk("%s: UNDEFINED ALGO !\n", __func__);
659 break;
660 }
661 } else {
4a4edcca 662 dvb_frontend_swzigzag(fe);
c59e7870 663 }
1da177e4
LT		 664 }
665
608f62d6
OE		 666 if (dvb_powerdown_on_sleep) {
667 if (fe->ops.set_voltage)
668 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869 669 if (fe->ops.tuner_ops.sleep) {
41286d97
DH		 670 if (fe->ops.i2c_gate_ctrl)
671 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 672 fe->ops.tuner_ops.sleep(fe);
673 if (fe->ops.i2c_gate_ctrl)
674 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 675 }
dea74869
PB		 676 if (fe->ops.sleep)
677 fe->ops.sleep(fe);
1da177e4
LT		 678 }
679
8eec1429 680 fepriv->thread = NULL;
e36309f5
MC		 681 if (kthread_should_stop())
682 fepriv->exit = DVB_FE_DEVICE_REMOVED;
683 else
684 fepriv->exit = DVB_FE_NO_EXIT;
1da177e4
LT		 685 mb();
686
687 dvb_frontend_wakeup(fe);
688 return 0;
689}
690
691static void dvb_frontend_stop(struct dvb_frontend *fe)
692{
0c53c70f 693 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 694
46b4f7c1 695 dprintk ("%s\n", __func__);
1da177e4 696
e36309f5 697 fepriv->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 698 mb();
699
8eec1429 700 if (!fepriv->thread)
1da177e4
LT		 701 return;
702
8eec1429 703 kthread_stop(fepriv->thread);
ca5be9cd 704
a0a4714c 705 sema_init(&fepriv->sem, 1);
1da177e4
LT		 706 fepriv->state = FESTATE_IDLE;
707
708 /* paranoia check in case a signal arrived */
8eec1429
HP		 709 if (fepriv->thread)
710 printk("dvb_frontend_stop: warning: thread %p won't exit\n",
711 fepriv->thread);
1da177e4
LT		 712}
713
83b75b04
N		 714s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
715{
716 return ((curtime.tv_usec < lasttime.tv_usec) ?
717 1000000 - lasttime.tv_usec + curtime.tv_usec :
718 curtime.tv_usec - lasttime.tv_usec);
719}
720EXPORT_SYMBOL(timeval_usec_diff);
721
722static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
723{
724 curtime->tv_usec += add_usec;
725 if (curtime->tv_usec >= 1000000) {
726 curtime->tv_usec -= 1000000;
727 curtime->tv_sec++;
728 }
729}
730
731/*
732 * Sleep until gettimeofday() > waketime + add_usec
733 * This needs to be as precise as possible, but as the delay is
734 * usually between 2ms and 32ms, it is done using a scheduled msleep
735 * followed by usleep (normally a busy-wait loop) for the remainder
736 */
737void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
738{
739 struct timeval lasttime;
740 s32 delta, newdelta;
741
742 timeval_usec_add(waketime, add_usec);
743
744 do_gettimeofday(&lasttime);
745 delta = timeval_usec_diff(lasttime, *waketime);
746 if (delta > 2500) {
747 msleep((delta - 1500) / 1000);
748 do_gettimeofday(&lasttime);
749 newdelta = timeval_usec_diff(lasttime, *waketime);
750 delta = (newdelta > delta) ? 0 : newdelta;
751 }
752 if (delta > 0)
753 udelay(delta);
754}
755EXPORT_SYMBOL(dvb_frontend_sleep_until);
756
1da177e4
LT		 757static int dvb_frontend_start(struct dvb_frontend *fe)
758{
759 int ret;
0c53c70f 760 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 761 struct task_struct *fe_thread;
1da177e4 762
46b4f7c1 763 dprintk ("%s\n", __func__);
1da177e4 764
8eec1429 765 if (fepriv->thread) {
e36309f5 766 if (fepriv->exit == DVB_FE_NO_EXIT)
1da177e4
LT		 767 return 0;
768 else
769 dvb_frontend_stop (fe);
770 }
771
772 if (signal_pending(current))
773 return -EINTR;
774 if (down_interruptible (&fepriv->sem))
775 return -EINTR;
776
777 fepriv->state = FESTATE_IDLE;
e36309f5 778 fepriv->exit = DVB_FE_NO_EXIT;
8eec1429 779 fepriv->thread = NULL;
1da177e4
LT		 780 mb();
781
8eec1429 782 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 783 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 784 if (IS_ERR(fe_thread)) {
785 ret = PTR_ERR(fe_thread);
786 printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
1da177e4
LT		 787 up(&fepriv->sem);
788 return ret;
789 }
8eec1429 790 fepriv->thread = fe_thread;
1da177e4
LT		 791 return 0;
792}
793
2030c032 794static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
c471b331
OE		 795 u32 *freq_min, u32 *freq_max)
796{
797 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
798
799 if (fe->ops.info.frequency_max == 0)
800 *freq_max = fe->ops.tuner_ops.info.frequency_max;
801 else if (fe->ops.tuner_ops.info.frequency_max == 0)
802 *freq_max = fe->ops.info.frequency_max;
803 else
804 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
805
806 if (*freq_min == 0 || *freq_max == 0)
363c35fc
ST		 807 printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
808 fe->dvb->num,fe->id);
c471b331
OE		 809}
810
1fab46f0
OE		 811static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
812 struct dvb_frontend_parameters *parms)
813{
c471b331
OE		 814 u32 freq_min;
815 u32 freq_max;
816
1fab46f0 817 /* range check: frequency */
2030c032 818 dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
c471b331
OE		 819 if ((freq_min && parms->frequency < freq_min) ||
820 (freq_max && parms->frequency > freq_max)) {
363c35fc
ST		 821 printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
822 fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max);
1fab46f0
OE		 823 return -EINVAL;
824 }
825
826 /* range check: symbol rate */
827 if (fe->ops.info.type == FE_QPSK) {
828 if ((fe->ops.info.symbol_rate_min &&
829 parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
830 (fe->ops.info.symbol_rate_max &&
831 parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 832 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
833 fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate,
1fab46f0
OE		 834 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
835 return -EINVAL;
836 }
837
838 } else if (fe->ops.info.type == FE_QAM) {
839 if ((fe->ops.info.symbol_rate_min &&
840 parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
841 (fe->ops.info.symbol_rate_max &&
842 parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 843 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
844 fe->dvb->num, fe->id, parms->u.qam.symbol_rate,
1fab46f0
OE		 845 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
846 return -EINVAL;
847 }
848 }
849
f51fad85
JG		 850 /* check for supported modulation */
851 if (fe->ops.info.type == FE_QAM &&
852 (parms->u.qam.modulation > QAM_AUTO ||
853 !((1 << (parms->u.qam.modulation + 10)) & fe->ops.info.caps))) {
854 printk(KERN_WARNING "DVB: adapter %i frontend %i modulation %u not supported\n",
855 fe->dvb->num, fe->id, parms->u.qam.modulation);
856 return -EINVAL;
857 }
858
1fab46f0
OE		 859 return 0;
860}
861
b6e760f3
PB		 862static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
863{
864 int i;
865
866 memset(&(fe->dtv_property_cache), 0,
867 sizeof(struct dtv_frontend_properties));
868
869 fe->dtv_property_cache.state = DTV_CLEAR;
870 fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;
871 fe->dtv_property_cache.inversion = INVERSION_AUTO;
872 fe->dtv_property_cache.fec_inner = FEC_AUTO;
873 fe->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_AUTO;
874 fe->dtv_property_cache.bandwidth_hz = BANDWIDTH_AUTO;
875 fe->dtv_property_cache.guard_interval = GUARD_INTERVAL_AUTO;
876 fe->dtv_property_cache.hierarchy = HIERARCHY_AUTO;
877 fe->dtv_property_cache.symbol_rate = QAM_AUTO;
878 fe->dtv_property_cache.code_rate_HP = FEC_AUTO;
879 fe->dtv_property_cache.code_rate_LP = FEC_AUTO;
880
881 fe->dtv_property_cache.isdbt_partial_reception = -1;
882 fe->dtv_property_cache.isdbt_sb_mode = -1;
883 fe->dtv_property_cache.isdbt_sb_subchannel = -1;
884 fe->dtv_property_cache.isdbt_sb_segment_idx = -1;
885 fe->dtv_property_cache.isdbt_sb_segment_count = -1;
886 fe->dtv_property_cache.isdbt_layer_enabled = 0x7;
887 for (i = 0; i < 3; i++) {
888 fe->dtv_property_cache.layer[i].fec = FEC_AUTO;
889 fe->dtv_property_cache.layer[i].modulation = QAM_AUTO;
890 fe->dtv_property_cache.layer[i].interleaving = -1;
891 fe->dtv_property_cache.layer[i].segment_count = -1;
892 }
893
894 return 0;
895}
896
897#define _DTV_CMD(n, s, b) \
898[n] = { \
899 .name = #n, \
900 .cmd = n, \
901 .set = s,\
902 .buffer = b \
903}
904
072ce0c5 905static struct dtv_cmds_h dtv_cmds[] = {
06d3a396
MCC		 906 _DTV_CMD(DTV_TUNE, 1, 0),
907 _DTV_CMD(DTV_CLEAR, 1, 0),
6b73eeaf
ST		 908
909 /* Set */
06d3a396
MCC		 910 _DTV_CMD(DTV_FREQUENCY, 1, 0),
911 _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
912 _DTV_CMD(DTV_MODULATION, 1, 0),
913 _DTV_CMD(DTV_INVERSION, 1, 0),
914 _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
915 _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
916 _DTV_CMD(DTV_INNER_FEC, 1, 0),
917 _DTV_CMD(DTV_VOLTAGE, 1, 0),
918 _DTV_CMD(DTV_TONE, 1, 0),
919 _DTV_CMD(DTV_PILOT, 1, 0),
920 _DTV_CMD(DTV_ROLLOFF, 1, 0),
921 _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
922 _DTV_CMD(DTV_HIERARCHY, 1, 0),
923 _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
924 _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
925 _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
926 _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
b6e760f3
PB		 927
928 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
929 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
930 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
931 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
932 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
e7b7949a 933 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
b6e760f3
PB		 934 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
935 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
936 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
937 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
938 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
939 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
940 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
941 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
942 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
943 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
944 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
945 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
946
947 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 0, 0),
948 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 0, 0),
949 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 0, 0),
950 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 0, 0),
951 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 0, 0),
e7b7949a 952 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 0, 0),
b6e760f3
PB		 953 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 0, 0),
954 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 0, 0),
955 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 0, 0),
956 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 0, 0),
957 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 0, 0),
958 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 0, 0),
959 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 0, 0),
960 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 0, 0),
961 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 0, 0),
962 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 0, 0),
963 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 0, 0),
964 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 0, 0),
965
98293ef3
HT		 966 _DTV_CMD(DTV_ISDBS_TS_ID, 1, 0),
967
6b73eeaf 968 /* Get */
06d3a396
MCC		 969 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
970 _DTV_CMD(DTV_API_VERSION, 0, 0),
971 _DTV_CMD(DTV_CODE_RATE_HP, 0, 0),
972 _DTV_CMD(DTV_CODE_RATE_LP, 0, 0),
973 _DTV_CMD(DTV_GUARD_INTERVAL, 0, 0),
974 _DTV_CMD(DTV_TRANSMISSION_MODE, 0, 0),
975 _DTV_CMD(DTV_HIERARCHY, 0, 0),
6b73eeaf
ST		 976};
977
072ce0c5 978static void dtv_property_dump(struct dtv_property *tvp)
6b73eeaf
ST		 979{
980 int i;
981
82d7669d 982 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
a1bc84c0 983 printk(KERN_WARNING "%s: tvp.cmd = 0x%08x undefined\n",
4aae8efb
DB		 984 __func__, tvp->cmd);
985 return;
986 }
987
a1bc84c0
ST		 988 dprintk("%s() tvp.cmd = 0x%08x (%s)\n"
989 ,__func__
6b73eeaf 990 ,tvp->cmd
56f0680a 991 ,dtv_cmds[ tvp->cmd ].name);
6b73eeaf 992
56f0680a 993 if(dtv_cmds[ tvp->cmd ].buffer) {
6b73eeaf 994
a1bc84c0
ST		 995 dprintk("%s() tvp.u.buffer.len = 0x%02x\n"
996 ,__func__
6b73eeaf
ST		 997 ,tvp->u.buffer.len);
998
999 for(i = 0; i < tvp->u.buffer.len; i++)
a1bc84c0
ST		 1000 dprintk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
1001 ,__func__
6b73eeaf
ST		 1002 ,i
1003 ,tvp->u.buffer.data[i]);
1004
1005 } else
a1bc84c0 1006 dprintk("%s() tvp.u.data = 0x%08x\n", __func__, tvp->u.data);
6b73eeaf
ST		 1007}
1008
072ce0c5 1009static int is_legacy_delivery_system(fe_delivery_system_t s)
6b73eeaf
ST		 1010{
1011 if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
3fa37deb
DH		 1012 (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS) ||
1013 (s == SYS_ATSC))
6b73eeaf
ST		 1014 return 1;
1015
1016 return 0;
1017}
1018
ee33c525
ST		 1019/* Synchronise the legacy tuning parameters into the cache, so that demodulator
1020 * drivers can use a single set_frontend tuning function, regardless of whether
1021 * it's being used for the legacy or new API, reducing code and complexity.
1022 */
072ce0c5
MCC		 1023static void dtv_property_cache_sync(struct dvb_frontend *fe,
1024 struct dvb_frontend_parameters *p)
ee33c525
ST		 1025{
1026 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1027
1028 c->frequency = p->frequency;
1029 c->inversion = p->inversion;
1030
1031 switch (fe->ops.info.type) {
1032 case FE_QPSK:
e5cefa82
DB		 1033 c->modulation = QPSK; /* implied for DVB-S in legacy API */
1034 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
ee33c525
ST		 1035 c->symbol_rate = p->u.qpsk.symbol_rate;
1036 c->fec_inner = p->u.qpsk.fec_inner;
80a773c9 1037 c->delivery_system = SYS_DVBS;
ee33c525
ST		 1038 break;
1039 case FE_QAM:
1040 c->symbol_rate = p->u.qam.symbol_rate;
1041 c->fec_inner = p->u.qam.fec_inner;
1042 c->modulation = p->u.qam.modulation;
80a773c9 1043 c->delivery_system = SYS_DVBC_ANNEX_AC;
ee33c525
ST		 1044 break;
1045 case FE_OFDM:
75b7f943
ST		 1046 if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
1047 c->bandwidth_hz = 6000000;
1048 else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
1049 c->bandwidth_hz = 7000000;
1050 else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
1051 c->bandwidth_hz = 8000000;
1052 else
1053 /* Including BANDWIDTH_AUTO */
1054 c->bandwidth_hz = 0;
ee33c525
ST		 1055 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1056 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1057 c->modulation = p->u.ofdm.constellation;
1058 c->transmission_mode = p->u.ofdm.transmission_mode;
1059 c->guard_interval = p->u.ofdm.guard_interval;
1060 c->hierarchy = p->u.ofdm.hierarchy_information;
80a773c9 1061 c->delivery_system = SYS_DVBT;
ee33c525
ST		 1062 break;
1063 case FE_ATSC:
1064 c->modulation = p->u.vsb.modulation;
80a773c9
ST		 1065 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1066 c->delivery_system = SYS_ATSC;
1067 else
1068 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525
ST		 1069 break;
1070 }
1071}
1072
d5748f10
ST		 1073/* Ensure the cached values are set correctly in the frontend
1074 * legacy tuning structures, for the advanced tuning API.
1075 */
072ce0c5 1076static void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
6b73eeaf 1077{
d5748f10
ST		 1078 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1079 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1080 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1081
d5748f10
ST		 1082 p->frequency = c->frequency;
1083 p->inversion = c->inversion;
6b73eeaf 1084
d5748f10
ST		 1085 switch (fe->ops.info.type) {
1086 case FE_QPSK:
a1bc84c0 1087 dprintk("%s() Preparing QPSK req\n", __func__);
d5748f10
ST		 1088 p->u.qpsk.symbol_rate = c->symbol_rate;
1089 p->u.qpsk.fec_inner = c->fec_inner;
80a773c9 1090 c->delivery_system = SYS_DVBS;
d5748f10
ST		 1091 break;
1092 case FE_QAM:
a1bc84c0 1093 dprintk("%s() Preparing QAM req\n", __func__);
d5748f10
ST		 1094 p->u.qam.symbol_rate = c->symbol_rate;
1095 p->u.qam.fec_inner = c->fec_inner;
1096 p->u.qam.modulation = c->modulation;
80a773c9 1097 c->delivery_system = SYS_DVBC_ANNEX_AC;
d5748f10
ST		 1098 break;
1099 case FE_OFDM:
a1bc84c0 1100 dprintk("%s() Preparing OFDM req\n", __func__);
75b7f943
ST		 1101 if (c->bandwidth_hz == 6000000)
1102 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1103 else if (c->bandwidth_hz == 7000000)
1104 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1105 else if (c->bandwidth_hz == 8000000)
1106 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
1107 else
1108 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 1109 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1110 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1111 p->u.ofdm.constellation = c->modulation;
1112 p->u.ofdm.transmission_mode = c->transmission_mode;
1113 p->u.ofdm.guard_interval = c->guard_interval;
1114 p->u.ofdm.hierarchy_information = c->hierarchy;
80a773c9 1115 c->delivery_system = SYS_DVBT;
d5748f10
ST		 1116 break;
1117 case FE_ATSC:
a1bc84c0 1118 dprintk("%s() Preparing VSB req\n", __func__);
d5748f10 1119 p->u.vsb.modulation = c->modulation;
80a773c9
ST		 1120 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1121 c->delivery_system = SYS_ATSC;
1122 else
1123 c->delivery_system = SYS_DVBC_ANNEX_B;
d5748f10
ST		 1124 break;
1125 }
1126}
1127
1128/* Ensure the cached values are set correctly in the frontend
1129 * legacy tuning structures, for the legacy tuning API.
1130 */
072ce0c5 1131static void dtv_property_adv_params_sync(struct dvb_frontend *fe)
d5748f10 1132{
56f0680a 1133 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1134 struct dvb_frontend_private *fepriv = fe->frontend_priv;
d5748f10 1135 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1136
d5748f10
ST		 1137 p->frequency = c->frequency;
1138 p->inversion = c->inversion;
1139
1140 switch(c->modulation) {
0a6393ae
ST		 1141 case PSK_8:
1142 case APSK_16:
97854829 1143 case APSK_32:
0a6393ae 1144 case QPSK:
d5748f10
ST		 1145 p->u.qpsk.symbol_rate = c->symbol_rate;
1146 p->u.qpsk.fec_inner = c->fec_inner;
1147 break;
1148 default:
1149 break;
1150 }
1151
1152 if(c->delivery_system == SYS_ISDBT) {
1153 /* Fake out a generic DVB-T request so we pass validation in the ioctl */
1154 p->frequency = c->frequency;
b6e760f3 1155 p->inversion = c->inversion;
d5748f10
ST		 1156 p->u.ofdm.constellation = QAM_AUTO;
1157 p->u.ofdm.code_rate_HP = FEC_AUTO;
1158 p->u.ofdm.code_rate_LP = FEC_AUTO;
d5748f10
ST		 1159 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
1160 p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
1161 p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
b6e760f3
PB		 1162 if (c->bandwidth_hz == 8000000)
1163 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
1164 else if (c->bandwidth_hz == 7000000)
1165 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1166 else if (c->bandwidth_hz == 6000000)
1167 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1168 else
1169 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 1170 }
1171}
1172
072ce0c5 1173static void dtv_property_cache_submit(struct dvb_frontend *fe)
d5748f10
ST		 1174{
1175 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1176
d5748f10
ST		 1177 /* For legacy delivery systems we don't need the delivery_system to
1178 * be specified, but we populate the older structures from the cache
1179 * so we can call set_frontend on older drivers.
1180 */
6b73eeaf 1181 if(is_legacy_delivery_system(c->delivery_system)) {
6b73eeaf 1182
a1bc84c0 1183 dprintk("%s() legacy, modulation = %d\n", __func__, c->modulation);
d5748f10 1184 dtv_property_legacy_params_sync(fe);
6b73eeaf 1185
6b73eeaf 1186 } else {
a1bc84c0 1187 dprintk("%s() adv, modulation = %d\n", __func__, c->modulation);
d5748f10 1188
6b73eeaf
ST		 1189 /* For advanced delivery systems / modulation types ...
1190 * we seed the lecacy dvb_frontend_parameters structure
1191 * so that the sanity checking code later in the IOCTL processing
1192 * can validate our basic frequency ranges, symbolrates, modulation
1193 * etc.
1194 */
d5748f10 1195 dtv_property_adv_params_sync(fe);
6b73eeaf 1196 }
6b73eeaf
ST		 1197}
1198
16ef8def 1199static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5 1200 unsigned int cmd, void *parg);
16ef8def 1201static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1202 unsigned int cmd, void *parg);
1203
072ce0c5
MCC		 1204static int dtv_property_process_get(struct dvb_frontend *fe,
1205 struct dtv_property *tvp,
16ef8def 1206 struct file *file)
363429a0
ST		 1207{
1208 int r = 0;
1209
bfbf2dae
ST		 1210 /* Allow the frontend to validate incoming properties */
1211 if (fe->ops.get_property)
1212 r = fe->ops.get_property(fe, tvp);
1213
1214 if (r < 0)
1215 return r;
1216
363429a0
ST		 1217 switch(tvp->cmd) {
1218 case DTV_FREQUENCY:
1219 tvp->u.data = fe->dtv_property_cache.frequency;
1220 break;
1221 case DTV_MODULATION:
1222 tvp->u.data = fe->dtv_property_cache.modulation;
1223 break;
75b7f943
ST		 1224 case DTV_BANDWIDTH_HZ:
1225 tvp->u.data = fe->dtv_property_cache.bandwidth_hz;
363429a0
ST		 1226 break;
1227 case DTV_INVERSION:
1228 tvp->u.data = fe->dtv_property_cache.inversion;
1229 break;
1230 case DTV_SYMBOL_RATE:
1231 tvp->u.data = fe->dtv_property_cache.symbol_rate;
1232 break;
1233 case DTV_INNER_FEC:
1234 tvp->u.data = fe->dtv_property_cache.fec_inner;
1235 break;
1236 case DTV_PILOT:
1237 tvp->u.data = fe->dtv_property_cache.pilot;
1238 break;
1239 case DTV_ROLLOFF:
1240 tvp->u.data = fe->dtv_property_cache.rolloff;
1241 break;
1242 case DTV_DELIVERY_SYSTEM:
1243 tvp->u.data = fe->dtv_property_cache.delivery_system;
1244 break;
363429a0
ST		 1245 case DTV_VOLTAGE:
1246 tvp->u.data = fe->dtv_property_cache.voltage;
1247 break;
1248 case DTV_TONE:
1249 tvp->u.data = fe->dtv_property_cache.sectone;
1250 break;
eacf8d8d
ST		 1251 case DTV_API_VERSION:
1252 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1253 break;
a4de91be
ST		 1254 case DTV_CODE_RATE_HP:
1255 tvp->u.data = fe->dtv_property_cache.code_rate_HP;
1256 break;
1257 case DTV_CODE_RATE_LP:
1258 tvp->u.data = fe->dtv_property_cache.code_rate_LP;
1259 break;
b87625f0
ST		 1260 case DTV_GUARD_INTERVAL:
1261 tvp->u.data = fe->dtv_property_cache.guard_interval;
1262 break;
1263 case DTV_TRANSMISSION_MODE:
1264 tvp->u.data = fe->dtv_property_cache.transmission_mode;
1265 break;
ef526f42
ST		 1266 case DTV_HIERARCHY:
1267 tvp->u.data = fe->dtv_property_cache.hierarchy;
1268 break;
b6e760f3
PB		 1269
1270 /* ISDB-T Support here */
1271 case DTV_ISDBT_PARTIAL_RECEPTION:
1272 tvp->u.data = fe->dtv_property_cache.isdbt_partial_reception;
1273 break;
1274 case DTV_ISDBT_SOUND_BROADCASTING:
1275 tvp->u.data = fe->dtv_property_cache.isdbt_sb_mode;
1276 break;
1277 case DTV_ISDBT_SB_SUBCHANNEL_ID:
1278 tvp->u.data = fe->dtv_property_cache.isdbt_sb_subchannel;
1279 break;
1280 case DTV_ISDBT_SB_SEGMENT_IDX:
1281 tvp->u.data = fe->dtv_property_cache.isdbt_sb_segment_idx;
1282 break;
1283 case DTV_ISDBT_SB_SEGMENT_COUNT:
1284 tvp->u.data = fe->dtv_property_cache.isdbt_sb_segment_count;
1285 break;
e7b7949a
PB		 1286 case DTV_ISDBT_LAYER_ENABLED:
1287 tvp->u.data = fe->dtv_property_cache.isdbt_layer_enabled;
1288 break;
b6e760f3
PB		 1289 case DTV_ISDBT_LAYERA_FEC:
1290 tvp->u.data = fe->dtv_property_cache.layer[0].fec;
1291 break;
1292 case DTV_ISDBT_LAYERA_MODULATION:
1293 tvp->u.data = fe->dtv_property_cache.layer[0].modulation;
1294 break;
1295 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
1296 tvp->u.data = fe->dtv_property_cache.layer[0].segment_count;
1297 break;
1298 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
1299 tvp->u.data = fe->dtv_property_cache.layer[0].interleaving;
1300 break;
1301 case DTV_ISDBT_LAYERB_FEC:
1302 tvp->u.data = fe->dtv_property_cache.layer[1].fec;
1303 break;
1304 case DTV_ISDBT_LAYERB_MODULATION:
1305 tvp->u.data = fe->dtv_property_cache.layer[1].modulation;
1306 break;
1307 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
1308 tvp->u.data = fe->dtv_property_cache.layer[1].segment_count;
1309 break;
1310 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
1311 tvp->u.data = fe->dtv_property_cache.layer[1].interleaving;
1312 break;
1313 case DTV_ISDBT_LAYERC_FEC:
1314 tvp->u.data = fe->dtv_property_cache.layer[2].fec;
1315 break;
1316 case DTV_ISDBT_LAYERC_MODULATION:
1317 tvp->u.data = fe->dtv_property_cache.layer[2].modulation;
1318 break;
1319 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
1320 tvp->u.data = fe->dtv_property_cache.layer[2].segment_count;
1321 break;
1322 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
1323 tvp->u.data = fe->dtv_property_cache.layer[2].interleaving;
1324 break;
98293ef3
HT		 1325 case DTV_ISDBS_TS_ID:
1326 tvp->u.data = fe->dtv_property_cache.isdbs_ts_id;
1327 break;
363429a0
ST		 1328 default:
1329 r = -1;
1330 }
1331
639544d7
MCC		 1332 dtv_property_dump(tvp);
1333
363429a0
ST		 1334 return r;
1335}
1336
072ce0c5
MCC		 1337static int dtv_property_process_set(struct dvb_frontend *fe,
1338 struct dtv_property *tvp,
072ce0c5 1339 struct file *file)
6b73eeaf
ST		 1340{
1341 int r = 0;
13c97bf5 1342 struct dvb_frontend_private *fepriv = fe->frontend_priv;
56f0680a 1343 dtv_property_dump(tvp);
6b73eeaf 1344
bfbf2dae
ST		 1345 /* Allow the frontend to validate incoming properties */
1346 if (fe->ops.set_property)
1347 r = fe->ops.set_property(fe, tvp);
1348
1349 if (r < 0)
1350 return r;
1351
6b73eeaf 1352 switch(tvp->cmd) {
e7fee0f3 1353 case DTV_CLEAR:
6b73eeaf
ST		 1354 /* Reset a cache of data specific to the frontend here. This does
1355 * not effect hardware.
1356 */
b6e760f3 1357 dvb_frontend_clear_cache(fe);
a1bc84c0 1358 dprintk("%s() Flushing property cache\n", __func__);
6b73eeaf 1359 break;
e7fee0f3 1360 case DTV_TUNE:
6b73eeaf 1361 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1362 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1363 * ioctl.
6b73eeaf 1364 */
e7fee0f3 1365 fe->dtv_property_cache.state = tvp->cmd;
a1bc84c0 1366 dprintk("%s() Finalised property cache\n", __func__);
d5748f10
ST		 1367 dtv_property_cache_submit(fe);
1368
16ef8def 1369 r |= dvb_frontend_ioctl_legacy(file, FE_SET_FRONTEND,
13c97bf5 1370 &fepriv->parameters);
6b73eeaf 1371 break;
363429a0 1372 case DTV_FREQUENCY:
56f0680a 1373 fe->dtv_property_cache.frequency = tvp->u.data;
6b73eeaf 1374 break;
363429a0 1375 case DTV_MODULATION:
56f0680a 1376 fe->dtv_property_cache.modulation = tvp->u.data;
6b73eeaf 1377 break;
75b7f943
ST		 1378 case DTV_BANDWIDTH_HZ:
1379 fe->dtv_property_cache.bandwidth_hz = tvp->u.data;
6b73eeaf 1380 break;
363429a0 1381 case DTV_INVERSION:
56f0680a 1382 fe->dtv_property_cache.inversion = tvp->u.data;
6b73eeaf 1383 break;
363429a0 1384 case DTV_SYMBOL_RATE:
56f0680a 1385 fe->dtv_property_cache.symbol_rate = tvp->u.data;
6b73eeaf 1386 break;
363429a0 1387 case DTV_INNER_FEC:
56f0680a 1388 fe->dtv_property_cache.fec_inner = tvp->u.data;
6b73eeaf 1389 break;
363429a0 1390 case DTV_PILOT:
56f0680a 1391 fe->dtv_property_cache.pilot = tvp->u.data;
6b73eeaf 1392 break;
363429a0 1393 case DTV_ROLLOFF:
56f0680a 1394 fe->dtv_property_cache.rolloff = tvp->u.data;
6b73eeaf 1395 break;
363429a0 1396 case DTV_DELIVERY_SYSTEM:
56f0680a 1397 fe->dtv_property_cache.delivery_system = tvp->u.data;
6b73eeaf 1398 break;
363429a0 1399 case DTV_VOLTAGE:
56f0680a 1400 fe->dtv_property_cache.voltage = tvp->u.data;
16ef8def 1401 r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
56f0680a 1402 (void *)fe->dtv_property_cache.voltage);
13c97bf5 1403 break;
363429a0 1404 case DTV_TONE:
56f0680a 1405 fe->dtv_property_cache.sectone = tvp->u.data;
16ef8def 1406 r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
56f0680a 1407 (void *)fe->dtv_property_cache.sectone);
13c97bf5 1408 break;
a4de91be
ST		 1409 case DTV_CODE_RATE_HP:
1410 fe->dtv_property_cache.code_rate_HP = tvp->u.data;
1411 break;
1412 case DTV_CODE_RATE_LP:
1413 fe->dtv_property_cache.code_rate_LP = tvp->u.data;
1414 break;
b87625f0
ST		 1415 case DTV_GUARD_INTERVAL:
1416 fe->dtv_property_cache.guard_interval = tvp->u.data;
1417 break;
1418 case DTV_TRANSMISSION_MODE:
1419 fe->dtv_property_cache.transmission_mode = tvp->u.data;
1420 break;
ef526f42
ST		 1421 case DTV_HIERARCHY:
1422 fe->dtv_property_cache.hierarchy = tvp->u.data;
1423 break;
b6e760f3
PB		 1424
1425 /* ISDB-T Support here */
1426 case DTV_ISDBT_PARTIAL_RECEPTION:
1427 fe->dtv_property_cache.isdbt_partial_reception = tvp->u.data;
1428 break;
1429 case DTV_ISDBT_SOUND_BROADCASTING:
1430 fe->dtv_property_cache.isdbt_sb_mode = tvp->u.data;
1431 break;
1432 case DTV_ISDBT_SB_SUBCHANNEL_ID:
1433 fe->dtv_property_cache.isdbt_sb_subchannel = tvp->u.data;
1434 break;
1435 case DTV_ISDBT_SB_SEGMENT_IDX:
1436 fe->dtv_property_cache.isdbt_sb_segment_idx = tvp->u.data;
1437 break;
1438 case DTV_ISDBT_SB_SEGMENT_COUNT:
1439 fe->dtv_property_cache.isdbt_sb_segment_count = tvp->u.data;
1440 break;
e7b7949a
PB		 1441 case DTV_ISDBT_LAYER_ENABLED:
1442 fe->dtv_property_cache.isdbt_layer_enabled = tvp->u.data;
1443 break;
b6e760f3
PB		 1444 case DTV_ISDBT_LAYERA_FEC:
1445 fe->dtv_property_cache.layer[0].fec = tvp->u.data;
1446 break;
1447 case DTV_ISDBT_LAYERA_MODULATION:
1448 fe->dtv_property_cache.layer[0].modulation = tvp->u.data;
1449 break;
1450 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
1451 fe->dtv_property_cache.layer[0].segment_count = tvp->u.data;
1452 break;
1453 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
1454 fe->dtv_property_cache.layer[0].interleaving = tvp->u.data;
1455 break;
1456 case DTV_ISDBT_LAYERB_FEC:
1457 fe->dtv_property_cache.layer[1].fec = tvp->u.data;
1458 break;
1459 case DTV_ISDBT_LAYERB_MODULATION:
1460 fe->dtv_property_cache.layer[1].modulation = tvp->u.data;
1461 break;
1462 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
1463 fe->dtv_property_cache.layer[1].segment_count = tvp->u.data;
1464 break;
1465 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
1466 fe->dtv_property_cache.layer[1].interleaving = tvp->u.data;
1467 break;
1468 case DTV_ISDBT_LAYERC_FEC:
1469 fe->dtv_property_cache.layer[2].fec = tvp->u.data;
1470 break;
1471 case DTV_ISDBT_LAYERC_MODULATION:
1472 fe->dtv_property_cache.layer[2].modulation = tvp->u.data;
1473 break;
1474 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
1475 fe->dtv_property_cache.layer[2].segment_count = tvp->u.data;
1476 break;
1477 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
1478 fe->dtv_property_cache.layer[2].interleaving = tvp->u.data;
1479 break;
98293ef3
HT		 1480 case DTV_ISDBS_TS_ID:
1481 fe->dtv_property_cache.isdbs_ts_id = tvp->u.data;
1482 break;
363429a0
ST		 1483 default:
1484 r = -1;
6b73eeaf
ST		 1485 }
1486
13c97bf5 1487 return r;
6b73eeaf
ST		 1488}
1489
16ef8def 1490static int dvb_frontend_ioctl(struct file *file,
1da177e4
LT		 1491 unsigned int cmd, void *parg)
1492{
1493 struct dvb_device *dvbdev = file->private_data;
1494 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1495 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1496 int err = -EOPNOTSUPP;
1497
fb8253ba 1498 dprintk("%s (%d)\n", __func__, _IOC_NR(cmd));
1da177e4 1499
e36309f5 1500 if (fepriv->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 1501 return -ENODEV;
1502
1503 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1504 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1505 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1506 return -EPERM;
1507
1508 if (down_interruptible (&fepriv->sem))
1509 return -ERESTARTSYS;
1510
13c97bf5 1511 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
16ef8def 1512 err = dvb_frontend_ioctl_properties(file, cmd, parg);
4dd88bec
ST		 1513 else {
1514 fe->dtv_property_cache.state = DTV_UNDEFINED;
16ef8def 1515 err = dvb_frontend_ioctl_legacy(file, cmd, parg);
4dd88bec 1516 }
13c97bf5
ST		 1517
1518 up(&fepriv->sem);
1519 return err;
1520}
1521
16ef8def 1522static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1523 unsigned int cmd, void *parg)
1524{
1525 struct dvb_device *dvbdev = file->private_data;
1526 struct dvb_frontend *fe = dvbdev->priv;
e6f9ec86 1527 int err = 0;
e7fee0f3
ST		 1528
1529 struct dtv_properties *tvps = NULL;
1530 struct dtv_property *tvp = NULL;
1531 int i;
13c97bf5
ST		 1532
1533 dprintk("%s\n", __func__);
1534
6b73eeaf 1535 if(cmd == FE_SET_PROPERTY) {
e7fee0f3 1536 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1537
a1bc84c0
ST		 1538 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1539 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 1540
1541 /* Put an arbitrary limit on the number of messages that can
1542 * be sent at once */
6068f506 1543 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 1544 return -EINVAL;
1545
6e3924aa 1546 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
e7fee0f3
ST		 1547 if (!tvp) {
1548 err = -ENOMEM;
1549 goto out;
6b73eeaf
ST		 1550 }
1551
e7fee0f3
ST		 1552 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1553 err = -EFAULT;
1554 goto out;
1555 }
1556
d48cb402 1557 for (i = 0; i < tvps->num; i++) {
16ef8def 1558 (tvp + i)->result = dtv_property_process_set(fe, tvp + i, file);
d48cb402
ST		 1559 err |= (tvp + i)->result;
1560 }
e7fee0f3 1561
a1bc84c0
ST		 1562 if(fe->dtv_property_cache.state == DTV_TUNE)
1563 dprintk("%s() Property cache is full, tuning\n", __func__);
bfbf2dae 1564
363429a0
ST		 1565 } else
1566 if(cmd == FE_GET_PROPERTY) {
363429a0
ST		 1567
1568 tvps = (struct dtv_properties __user *)parg;
1569
a1bc84c0
ST		 1570 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1571 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 1572
1573 /* Put an arbitrary limit on the number of messages that can
1574 * be sent at once */
6068f506 1575 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 1576 return -EINVAL;
1577
6e3924aa 1578 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
363429a0
ST		 1579 if (!tvp) {
1580 err = -ENOMEM;
1581 goto out;
1582 }
1583
1584 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1585 err = -EFAULT;
1586 goto out;
1587 }
1588
d48cb402 1589 for (i = 0; i < tvps->num; i++) {
16ef8def 1590 (tvp + i)->result = dtv_property_process_get(fe, tvp + i, file);
d48cb402
ST		 1591 err |= (tvp + i)->result;
1592 }
363429a0
ST		 1593
1594 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1595 err = -EFAULT;
1596 goto out;
1597 }
1598
363429a0
ST		 1599 } else
1600 err = -EOPNOTSUPP;
1601
e7fee0f3
ST		 1602out:
1603 kfree(tvp);
13c97bf5
ST		 1604 return err;
1605}
1606
16ef8def 1607static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5
ST		 1608 unsigned int cmd, void *parg)
1609{
1610 struct dvb_device *dvbdev = file->private_data;
1611 struct dvb_frontend *fe = dvbdev->priv;
1612 struct dvb_frontend_private *fepriv = fe->frontend_priv;
9133aee0
MK		 1613 int cb_err, err = -EOPNOTSUPP;
1614
1615 if (fe->dvb->fe_ioctl_override) {
1616 cb_err = fe->dvb->fe_ioctl_override(fe, cmd, parg,
1617 DVB_FE_IOCTL_PRE);
1618 if (cb_err < 0)
1619 return cb_err;
1620 if (cb_err > 0)
1621 return 0;
1622 /* fe_ioctl_override returning 0 allows
1623 * dvb-core to continue handling the ioctl */
1624 }
13c97bf5 1625
1da177e4
LT		 1626 switch (cmd) {
1627 case FE_GET_INFO: {
0c53c70f 1628 struct dvb_frontend_info* info = parg;
dea74869 1629 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
2030c032 1630 dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4
LT		 1631
1632 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
1633 * do it, it is done for it. */
1634 info->caps |= FE_CAN_INVERSION_AUTO;
1635 err = 0;
1636 break;
1637 }
1638
6757ccc5
PB		 1639 case FE_READ_STATUS: {
1640 fe_status_t* status = parg;
1641
1642 /* if retune was requested but hasn't occured yet, prevent
1643 * that user get signal state from previous tuning */
01886255
JG		 1644 if (fepriv->state == FESTATE_RETUNE ||
1645 fepriv->state == FESTATE_ERROR) {
6757ccc5
PB		 1646 err=0;
1647 *status = 0;
1648 break;
1649 }
1650
dea74869
PB		 1651 if (fe->ops.read_status)
1652 err = fe->ops.read_status(fe, status);
1da177e4 1653 break;
6757ccc5 1654 }
1da177e4 1655 case FE_READ_BER:
dea74869
PB		 1656 if (fe->ops.read_ber)
1657 err = fe->ops.read_ber(fe, (__u32*) parg);
1da177e4
LT		 1658 break;
1659
1660 case FE_READ_SIGNAL_STRENGTH:
dea74869
PB		 1661 if (fe->ops.read_signal_strength)
1662 err = fe->ops.read_signal_strength(fe, (__u16*) parg);
1da177e4
LT		 1663 break;
1664
1665 case FE_READ_SNR:
dea74869
PB		 1666 if (fe->ops.read_snr)
1667 err = fe->ops.read_snr(fe, (__u16*) parg);
1da177e4
LT		 1668 break;
1669
1670 case FE_READ_UNCORRECTED_BLOCKS:
dea74869
PB		 1671 if (fe->ops.read_ucblocks)
1672 err = fe->ops.read_ucblocks(fe, (__u32*) parg);
1da177e4
LT		 1673 break;
1674
1675
1676 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 1677 if (fe->ops.diseqc_reset_overload) {
1678 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 1679 fepriv->state = FESTATE_DISEQC;
1680 fepriv->status = 0;
1681 }
1682 break;
1683
1684 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 1685 if (fe->ops.diseqc_send_master_cmd) {
1686 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 1687 fepriv->state = FESTATE_DISEQC;
1688 fepriv->status = 0;
1689 }
1690 break;
1691
1692 case FE_DISEQC_SEND_BURST:
dea74869
PB		 1693 if (fe->ops.diseqc_send_burst) {
1694 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 1695 fepriv->state = FESTATE_DISEQC;
1696 fepriv->status = 0;
1697 }
1698 break;
1699
1700 case FE_SET_TONE:
dea74869
PB		 1701 if (fe->ops.set_tone) {
1702 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 1703 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 1704 fepriv->state = FESTATE_DISEQC;
1705 fepriv->status = 0;
1706 }
1707 break;
1708
1709 case FE_SET_VOLTAGE:
dea74869
PB		 1710 if (fe->ops.set_voltage) {
1711 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 1712 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 1713 fepriv->state = FESTATE_DISEQC;
1714 fepriv->status = 0;
1715 }
1716 break;
1717
1718 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 1719 if (fe->ops.dishnetwork_send_legacy_command) {
1720 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 1721 fepriv->state = FESTATE_DISEQC;
1722 fepriv->status = 0;
dea74869 1723 } else if (fe->ops.set_voltage) {
83b75b04
N		 1724 /*
1725 * NOTE: This is a fallback condition. Some frontends
1726 * (stv0299 for instance) take longer than 8msec to
1727 * respond to a set_voltage command. Those switches
1728 * need custom routines to switch properly. For all
2030c032 1729 * other frontends, the following should work ok.
83b75b04
N		 1730 * Dish network legacy switches (as used by Dish500)
1731 * are controlled by sending 9-bit command words
1732 * spaced 8msec apart.
1733 * the actual command word is switch/port dependant
1734 * so it is up to the userspace application to send
1735 * the right command.
1736 * The command must always start with a '0' after
1737 * initialization, so parg is 8 bits and does not
1738 * include the initialization or start bit
1739 */
c6eb8eaf 1740 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 1741 struct timeval nexttime;
1742 struct timeval tv[10];
1743 int i;
1744 u8 last = 1;
1745 if (dvb_frontend_debug)
c6eb8eaf 1746 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 1747 do_gettimeofday(&nexttime);
1748 if (dvb_frontend_debug)
1749 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
1750 /* before sending a command, initialize by sending
1751 * a 32ms 18V to the switch
1752 */
dea74869 1753 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 1754 dvb_frontend_sleep_until(&nexttime, 32000);
1755
1756 for (i = 0; i < 9; i++) {
1757 if (dvb_frontend_debug)
1758 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 1759 if ((swcmd & 0x01) != last) {
83b75b04 1760 /* set voltage to (last ? 13V : 18V) */
dea74869 1761 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 1762 last = (last) ? 0 : 1;
1763 }
c6eb8eaf 1764 swcmd = swcmd >> 1;
83b75b04
N		 1765 if (i != 8)
1766 dvb_frontend_sleep_until(&nexttime, 8000);
1767 }
1768 if (dvb_frontend_debug) {
1769 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 1770 __func__, fe->dvb->num);
83b75b04
N		 1771 for (i = 1; i < 10; i++)
1772 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
1773 }
1774 err = 0;
1775 fepriv->state = FESTATE_DISEQC;
1776 fepriv->status = 0;
1da177e4
LT		 1777 }
1778 break;
1779
1780 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 1781 if (fe->ops.diseqc_recv_slave_reply)
1782 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 1783 break;
1784
1785 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 1786 if (fe->ops.enable_high_lnb_voltage)
1787 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 1788 break;
1789
1790 case FE_SET_FRONTEND: {
1791 struct dvb_frontend_tune_settings fetunesettings;
1792
e7fee0f3 1793 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf
ST		 1794 if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) {
1795 err = -EINVAL;
1796 break;
1797 }
1798 } else {
1799 if (dvb_frontend_check_parameters(fe, parg) < 0) {
1800 err = -EINVAL;
1801 break;
1802 }
1fab46f0 1803
6b73eeaf
ST		 1804 memcpy (&fepriv->parameters, parg,
1805 sizeof (struct dvb_frontend_parameters));
1d78cac4 1806 dtv_property_cache_sync(fe, &fepriv->parameters);
6b73eeaf 1807 }
1da177e4
LT		 1808
1809 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
1810 memcpy(&fetunesettings.parameters, parg,
1811 sizeof (struct dvb_frontend_parameters));
1812
1813 /* force auto frequency inversion if requested */
1814 if (dvb_force_auto_inversion) {
1815 fepriv->parameters.inversion = INVERSION_AUTO;
1816 fetunesettings.parameters.inversion = INVERSION_AUTO;
1817 }
dea74869 1818 if (fe->ops.info.type == FE_OFDM) {
1b3c3714 1819 /* without hierarchical coding code_rate_LP is irrelevant,
1da177e4
LT		 1820 * so we tolerate the otherwise invalid FEC_NONE setting */
1821 if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
1822 fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE)
1823 fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
1824 }
1825
1826 /* get frontend-specific tuning settings */
dea74869 1827 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
1da177e4
LT		 1828 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
1829 fepriv->max_drift = fetunesettings.max_drift;
1830 fepriv->step_size = fetunesettings.step_size;
1831 } else {
1832 /* default values */
dea74869 1833 switch(fe->ops.info.type) {
1da177e4
LT		 1834 case FE_QPSK:
1835 fepriv->min_delay = HZ/20;
1836 fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000;
1837 fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000;
1838 break;
1839
1840 case FE_QAM:
1841 fepriv->min_delay = HZ/20;
1842 fepriv->step_size = 0; /* no zigzag */
1843 fepriv->max_drift = 0;
1844 break;
1845
1846 case FE_OFDM:
1847 fepriv->min_delay = HZ/20;
dea74869
PB		 1848 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
1849 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
1da177e4
LT		 1850 break;
1851 case FE_ATSC:
4821fb1d
MA		 1852 fepriv->min_delay = HZ/20;
1853 fepriv->step_size = 0;
1854 fepriv->max_drift = 0;
1da177e4
LT		 1855 break;
1856 }
1857 }
1858 if (dvb_override_tune_delay > 0)
1859 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
1860
1861 fepriv->state = FESTATE_RETUNE;
1d06059c
IL		 1862
1863 /* Request the search algorithm to search */
1864 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
1865
1da177e4
LT		 1866 dvb_frontend_wakeup(fe);
1867 dvb_frontend_add_event(fe, 0);
1868 fepriv->status = 0;
1869 err = 0;
1870 break;
1871 }
1872
1873 case FE_GET_EVENT:
1874 err = dvb_frontend_get_event (fe, parg, file->f_flags);
1875 break;
1876
1877 case FE_GET_FRONTEND:
dea74869 1878 if (fe->ops.get_frontend) {
1da177e4 1879 memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters));
dea74869 1880 err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg);
1da177e4
LT		 1881 }
1882 break;
36cb557a
AQ		 1883
1884 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 1885 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 1886 err = 0;
36cb557a 1887 break;
1da177e4
LT		 1888 };
1889
9133aee0
MK		 1890 if (fe->dvb->fe_ioctl_override) {
1891 cb_err = fe->dvb->fe_ioctl_override(fe, cmd, parg,
1892 DVB_FE_IOCTL_POST);
1893 if (cb_err < 0)
1894 return cb_err;
1895 }
1896
1da177e4
LT		 1897 return err;
1898}
1899
6b73eeaf 1900
1da177e4
LT		 1901static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
1902{
1903 struct dvb_device *dvbdev = file->private_data;
1904 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1905 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 1906
46b4f7c1 1907 dprintk ("%s\n", __func__);
1da177e4
LT		 1908
1909 poll_wait (file, &fepriv->events.wait_queue, wait);
1910
1911 if (fepriv->events.eventw != fepriv->events.eventr)
1912 return (POLLIN | POLLRDNORM | POLLPRI);
1913
1914 return 0;
1915}
1916
1917static int dvb_frontend_open(struct inode *inode, struct file *file)
1918{
1919 struct dvb_device *dvbdev = file->private_data;
1920 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1921 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 1922 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 1923 int ret;
1924
46b4f7c1 1925 dprintk ("%s\n", __func__);
e36309f5
MC		 1926 if (fepriv->exit == DVB_FE_DEVICE_REMOVED)
1927 return -ENODEV;
1da177e4 1928
59b1842d
DB		 1929 if (adapter->mfe_shared) {
1930 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 1931
1932 if (adapter->mfe_dvbdev == NULL)
1933 adapter->mfe_dvbdev = dvbdev;
1934
1935 else if (adapter->mfe_dvbdev != dvbdev) {
1936 struct dvb_device
1937 *mfedev = adapter->mfe_dvbdev;
1938 struct dvb_frontend
1939 *mfe = mfedev->priv;
1940 struct dvb_frontend_private
1941 *mfepriv = mfe->frontend_priv;
1942 int mferetry = (dvb_mfe_wait_time << 1);
1943
1944 mutex_unlock (&adapter->mfe_lock);
1945 while (mferetry-- && (mfedev->users != -1 ||
1946 mfepriv->thread != NULL)) {
1947 if(msleep_interruptible(500)) {
1948 if(signal_pending(current))
1949 return -EINTR;
59b1842d 1950 }
6594690b
DB		 1951 }
1952
1953 mutex_lock (&adapter->mfe_lock);
1954 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 1955 mfedev = adapter->mfe_dvbdev;
1956 mfe = mfedev->priv;
1957 mfepriv = mfe->frontend_priv;
6594690b
DB		 1958 if (mfedev->users != -1 ||
1959 mfepriv->thread != NULL) {
1960 mutex_unlock (&adapter->mfe_lock);
1961 return -EBUSY;
59b1842d 1962 }
6594690b 1963 adapter->mfe_dvbdev = dvbdev;
59b1842d 1964 }
59b1842d
DB		 1965 }
1966 }
1967
48136e1e
OE		 1968 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
1969 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 1970 goto err0;
ba7e6f3e
ST		 1971 }
1972
48136e1e
OE		 1973 if ((ret = dvb_generic_open (inode, file)) < 0)
1974 goto err1;
04c56d0e 1975
48136e1e 1976 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 1977 /* normal tune mode when opened R/W */
1978 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
1979 fepriv->tone = -1;
1980 fepriv->voltage = -1;
1981
1da177e4
LT		 1982 ret = dvb_frontend_start (fe);
1983 if (ret)
48136e1e 1984 goto err2;
1da177e4
LT		 1985
1986 /* empty event queue */
1987 fepriv->events.eventr = fepriv->events.eventw = 0;
1988 }
1989
59b1842d
DB		 1990 if (adapter->mfe_shared)
1991 mutex_unlock (&adapter->mfe_lock);
1da177e4 1992 return ret;
48136e1e
OE		 1993
1994err2:
1995 dvb_generic_release(inode, file);
1996err1:
1997 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
1998 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 1999err0:
2000 if (adapter->mfe_shared)
2001 mutex_unlock (&adapter->mfe_lock);
48136e1e 2002 return ret;
1da177e4
LT		 2003}
2004
2005static int dvb_frontend_release(struct inode *inode, struct file *file)
2006{
2007 struct dvb_device *dvbdev = file->private_data;
2008 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2009 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 2010 int ret;
1da177e4 2011
46b4f7c1 2012 dprintk ("%s\n", __func__);
1da177e4
LT		 2013
2014 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
2015 fepriv->release_jiffies = jiffies;
2016
ca5be9cd
MR		 2017 ret = dvb_generic_release (inode, file);
2018
48136e1e 2019 if (dvbdev->users == -1) {
e36309f5 2020 if (fepriv->exit != DVB_FE_NO_EXIT) {
48136e1e
OE		 2021 fops_put(file->f_op);
2022 file->f_op = NULL;
2023 wake_up(&dvbdev->wait_queue);
2024 }
2025 if (fe->ops.ts_bus_ctrl)
2026 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 2027 }
48136e1e 2028
ca5be9cd 2029 return ret;
1da177e4
LT		 2030}
2031
784e29d2 2032static const struct file_operations dvb_frontend_fops = {
1da177e4 2033 .owner = THIS_MODULE,
16ef8def 2034 .unlocked_ioctl = dvb_generic_ioctl,
1da177e4
LT		 2035 .poll = dvb_frontend_poll,
2036 .open = dvb_frontend_open,
6038f373
AB		 2037 .release = dvb_frontend_release,
2038 .llseek = noop_llseek,
1da177e4
LT		 2039};
2040
2041int dvb_register_frontend(struct dvb_adapter* dvb,
2042 struct dvb_frontend* fe)
2043{
2044 struct dvb_frontend_private *fepriv;
2045 static const struct dvb_device dvbdev_template = {
2046 .users = ~0,
2047 .writers = 1,
2048 .readers = (~0)-1,
2049 .fops = &dvb_frontend_fops,
2050 .kernel_ioctl = dvb_frontend_ioctl
2051 };
2052
46b4f7c1 2053 dprintk ("%s\n", __func__);
1da177e4 2054
3593cab5 2055 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 2056 return -ERESTARTSYS;
2057
7408187d 2058 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 2059 if (fe->frontend_priv == NULL) {
3593cab5 2060 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2061 return -ENOMEM;
2062 }
0c53c70f 2063 fepriv = fe->frontend_priv;
1da177e4 2064
a0a4714c 2065 sema_init(&fepriv->sem, 1);
1da177e4
LT		 2066 init_waitqueue_head (&fepriv->wait_queue);
2067 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 2068 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 2069 fe->dvb = dvb;
2070 fepriv->inversion = INVERSION_OFF;
2071
363c35fc 2072 printk ("DVB: registering adapter %i frontend %i (%s)...\n",
1da177e4 2073 fe->dvb->num,
363c35fc 2074 fe->id,
dea74869 2075 fe->ops.info.name);
1da177e4
LT		 2076
2077 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
2078 fe, DVB_DEVICE_FRONTEND);
2079
3593cab5 2080 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2081 return 0;
2082}
2083EXPORT_SYMBOL(dvb_register_frontend);
2084
2085int dvb_unregister_frontend(struct dvb_frontend* fe)
2086{
0c53c70f 2087 struct dvb_frontend_private *fepriv = fe->frontend_priv;
46b4f7c1 2088 dprintk ("%s\n", __func__);
1da177e4 2089
57861b43 2090 mutex_lock(&frontend_mutex);
ca5be9cd 2091 dvb_frontend_stop (fe);
57861b43
MR		 2092 mutex_unlock(&frontend_mutex);
2093
2094 if (fepriv->dvbdev->users < -1)
2095 wait_event(fepriv->dvbdev->wait_queue,
2096 fepriv->dvbdev->users==-1);
2097
3593cab5 2098 mutex_lock(&frontend_mutex);
1da177e4 2099 dvb_unregister_device (fepriv->dvbdev);
d9955060 2100
1da177e4
LT		 2101 /* fe is invalid now */
2102 kfree(fepriv);
3593cab5 2103 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2104 return 0;
2105}
2106EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 2107
149ef72d 2108#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 2109void dvb_frontend_detach(struct dvb_frontend* fe)
2110{
2111 void *ptr;
2112
2113 if (fe->ops.release_sec) {
2114 fe->ops.release_sec(fe);
2115 symbol_put_addr(fe->ops.release_sec);
2116 }
2117 if (fe->ops.tuner_ops.release) {
2118 fe->ops.tuner_ops.release(fe);
2119 symbol_put_addr(fe->ops.tuner_ops.release);
2120 }
2426a27e
MK		 2121 if (fe->ops.analog_ops.release) {
2122 fe->ops.analog_ops.release(fe);
2123 symbol_put_addr(fe->ops.analog_ops.release);
2124 }
f52a838b
AQ		 2125 ptr = (void*)fe->ops.release;
2126 if (ptr) {
2127 fe->ops.release(fe);
2128 symbol_put_addr(ptr);
2129 }
2130}
2131#else
2132void dvb_frontend_detach(struct dvb_frontend* fe)
2133{
2134 if (fe->ops.release_sec)
2135 fe->ops.release_sec(fe);
2136 if (fe->ops.tuner_ops.release)
2137 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 2138 if (fe->ops.analog_ops.release)
2139 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 2140 if (fe->ops.release)
2141 fe->ops.release(fe);
2142}
2143#endif
2144EXPORT_SYMBOL(dvb_frontend_detach);
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