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V4L/DVB (9632): make em28xx aux audio input work
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / dvb / dvb-core / dvb_frontend.c
CommitLineData
1da177e4
LT		 1/*
2 * dvb_frontend.c: DVB frontend tuning interface/thread
3 *
4 *
5 * Copyright (C) 1999-2001 Ralph Metzler
6 * Marcus Metzler
7 * Holger Waechtler
8 * for convergence integrated media GmbH
9 *
10 * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
26 */
27
28#include <linux/string.h>
29#include <linux/kernel.h>
30#include <linux/sched.h>
31#include <linux/wait.h>
32#include <linux/slab.h>
33#include <linux/poll.h>
34#include <linux/module.h>
1da177e4 35#include <linux/list.h>
7dfb7103 36#include <linux/freezer.h>
cc89c229 37#include <linux/jiffies.h>
8eec1429 38#include <linux/kthread.h>
1da177e4 39#include <asm/processor.h>
1da177e4
LT		 40
41#include "dvb_frontend.h"
42#include "dvbdev.h"
eacf8d8d 43#include <linux/dvb/version.h>
1da177e4
LT		 44
45static int dvb_frontend_debug;
849be2cd 46static int dvb_shutdown_timeout;
1da177e4
LT		 47static int dvb_force_auto_inversion;
48static int dvb_override_tune_delay;
49static int dvb_powerdown_on_sleep = 1;
59b1842d 50static int dvb_mfe_wait_time = 5;
1da177e4
LT		 51
52module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 53MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 54module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 55MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 56module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 57MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 58module_param(dvb_override_tune_delay, int, 0644);
1da177e4 59MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 60module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 61MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 62module_param(dvb_mfe_wait_time, int, 0644);
63MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
1da177e4
LT		 64
65#define dprintk if (dvb_frontend_debug) printk
66
67#define FESTATE_IDLE 1
68#define FESTATE_RETUNE 2
69#define FESTATE_TUNING_FAST 4
70#define FESTATE_TUNING_SLOW 8
71#define FESTATE_TUNED 16
72#define FESTATE_ZIGZAG_FAST 32
73#define FESTATE_ZIGZAG_SLOW 64
74#define FESTATE_DISEQC 128
75#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
76#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
77#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
78#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16
MA		 79
80#define FE_ALGO_HW 1
1da177e4
LT		 81/*
82 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
83 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
84 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
85 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
86 * FESTATE_TUNED. The frontend has successfully locked on.
87 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
88 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
89 * FESTATE_DISEQC. A DISEQC command has just been issued.
90 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
91 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
92 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
93 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
94 */
95
3593cab5 96static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 97
98struct dvb_frontend_private {
99
36cb557a 100 /* thread/frontend values */
1da177e4
LT		 101 struct dvb_device *dvbdev;
102 struct dvb_frontend_parameters parameters;
103 struct dvb_fe_events events;
104 struct semaphore sem;
105 struct list_head list_head;
106 wait_queue_head_t wait_queue;
8eec1429 107 struct task_struct *thread;
1da177e4 108 unsigned long release_jiffies;
36cb557a
AQ		 109 unsigned int exit;
110 unsigned int wakeup;
1da177e4 111 fe_status_t status;
400b7083 112 unsigned long tune_mode_flags;
36cb557a 113 unsigned int delay;
86f40cc3 114 unsigned int reinitialise;
64454016
AQ		 115 int tone;
116 int voltage;
36cb557a
AQ		 117
118 /* swzigzag values */
119 unsigned int state;
120 unsigned int bending;
121 int lnb_drift;
122 unsigned int inversion;
123 unsigned int auto_step;
124 unsigned int auto_sub_step;
125 unsigned int started_auto_step;
126 unsigned int min_delay;
127 unsigned int max_drift;
128 unsigned int step_size;
129 int quality;
130 unsigned int check_wrapped;
1da177e4
LT		 131};
132
86f40cc3 133static void dvb_frontend_wakeup(struct dvb_frontend *fe);
1da177e4
LT		 134
135static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
136{
0c53c70f 137 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 138 struct dvb_fe_events *events = &fepriv->events;
139 struct dvb_frontend_event *e;
140 int wp;
141
46b4f7c1 142 dprintk ("%s\n", __func__);
1da177e4 143
03b76123 144 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 145 return;
146
147 wp = (events->eventw + 1) % MAX_EVENT;
148
149 if (wp == events->eventr) {
150 events->overflow = 1;
151 events->eventr = (events->eventr + 1) % MAX_EVENT;
152 }
153
154 e = &events->events[events->eventw];
155
156 memcpy (&e->parameters, &fepriv->parameters,
157 sizeof (struct dvb_frontend_parameters));
158
159 if (status & FE_HAS_LOCK)
dea74869
PB		 160 if (fe->ops.get_frontend)
161 fe->ops.get_frontend(fe, &e->parameters);
1da177e4
LT		 162
163 events->eventw = wp;
164
03b76123 165 mutex_unlock(&events->mtx);
1da177e4
LT		 166
167 e->status = status;
168
169 wake_up_interruptible (&events->wait_queue);
170}
171
172static int dvb_frontend_get_event(struct dvb_frontend *fe,
173 struct dvb_frontend_event *event, int flags)
174{
0c53c70f 175 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 176 struct dvb_fe_events *events = &fepriv->events;
177
46b4f7c1 178 dprintk ("%s\n", __func__);
1da177e4
LT		 179
180 if (events->overflow) {
181 events->overflow = 0;
182 return -EOVERFLOW;
183 }
184
185 if (events->eventw == events->eventr) {
186 int ret;
187
188 if (flags & O_NONBLOCK)
189 return -EWOULDBLOCK;
190
191 up(&fepriv->sem);
192
193 ret = wait_event_interruptible (events->wait_queue,
194 events->eventw != events->eventr);
195
196 if (down_interruptible (&fepriv->sem))
197 return -ERESTARTSYS;
198
199 if (ret < 0)
200 return ret;
201 }
202
03b76123 203 if (mutex_lock_interruptible (&events->mtx))
1da177e4
LT		 204 return -ERESTARTSYS;
205
206 memcpy (event, &events->events[events->eventr],
207 sizeof(struct dvb_frontend_event));
208
209 events->eventr = (events->eventr + 1) % MAX_EVENT;
210
03b76123 211 mutex_unlock(&events->mtx);
1da177e4
LT		 212
213 return 0;
214}
215
216static void dvb_frontend_init(struct dvb_frontend *fe)
217{
363c35fc 218 dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n",
1da177e4 219 fe->dvb->num,
363c35fc 220 fe->id,
dea74869
PB		 221 fe->ops.info.name);
222
223 if (fe->ops.init)
224 fe->ops.init(fe);
225 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 226 if (fe->ops.i2c_gate_ctrl)
227 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 228 fe->ops.tuner_ops.init(fe);
229 if (fe->ops.i2c_gate_ctrl)
230 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 231 }
1da177e4
LT		 232}
233
86f40cc3
AQ		 234void dvb_frontend_reinitialise(struct dvb_frontend *fe)
235{
236 struct dvb_frontend_private *fepriv = fe->frontend_priv;
237
238 fepriv->reinitialise = 1;
239 dvb_frontend_wakeup(fe);
240}
241EXPORT_SYMBOL(dvb_frontend_reinitialise);
242
36cb557a 243static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 244{
36cb557a 245 int q2;
1da177e4 246
46b4f7c1 247 dprintk ("%s\n", __func__);
1da177e4 248
36cb557a
AQ		 249 if (locked)
250 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
251 else
252 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 253
36cb557a
AQ		 254 q2 = fepriv->quality - 128;
255 q2 *= q2;
1da177e4 256
36cb557a 257 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 258}
259
260/**
261 * Performs automatic twiddling of frontend parameters.
262 *
263 * @param fe The frontend concerned.
264 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
265 * @returns Number of complete iterations that have been performed.
266 */
36cb557a 267static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 268{
269 int autoinversion;
270 int ready = 0;
0c53c70f 271 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 272 int original_inversion = fepriv->parameters.inversion;
273 u32 original_frequency = fepriv->parameters.frequency;
274
275 /* are we using autoinversion? */
dea74869 276 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
1da177e4
LT		 277 (fepriv->parameters.inversion == INVERSION_AUTO));
278
279 /* setup parameters correctly */
280 while(!ready) {
281 /* calculate the lnb_drift */
282 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
283
284 /* wrap the auto_step if we've exceeded the maximum drift */
285 if (fepriv->lnb_drift > fepriv->max_drift) {
286 fepriv->auto_step = 0;
287 fepriv->auto_sub_step = 0;
288 fepriv->lnb_drift = 0;
289 }
290
291 /* perform inversion and +/- zigzag */
292 switch(fepriv->auto_sub_step) {
293 case 0:
294 /* try with the current inversion and current drift setting */
295 ready = 1;
296 break;
297
298 case 1:
299 if (!autoinversion) break;
300
301 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
302 ready = 1;
303 break;
304
305 case 2:
306 if (fepriv->lnb_drift == 0) break;
307
308 fepriv->lnb_drift = -fepriv->lnb_drift;
309 ready = 1;
310 break;
311
312 case 3:
313 if (fepriv->lnb_drift == 0) break;
314 if (!autoinversion) break;
315
316 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
317 fepriv->lnb_drift = -fepriv->lnb_drift;
318 ready = 1;
319 break;
320
321 default:
322 fepriv->auto_step++;
323 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
324 break;
325 }
326
327 if (!ready) fepriv->auto_sub_step++;
328 }
329
330 /* if this attempt would hit where we started, indicate a complete
331 * iteration has occurred */
332 if ((fepriv->auto_step == fepriv->started_auto_step) &&
333 (fepriv->auto_sub_step == 0) && check_wrapped) {
334 return 1;
335 }
336
337 dprintk("%s: drift:%i inversion:%i auto_step:%i "
338 "auto_sub_step:%i started_auto_step:%i\n",
46b4f7c1 339 __func__, fepriv->lnb_drift, fepriv->inversion,
1da177e4
LT		 340 fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
341
342 /* set the frontend itself */
343 fepriv->parameters.frequency += fepriv->lnb_drift;
344 if (autoinversion)
345 fepriv->parameters.inversion = fepriv->inversion;
dea74869
PB		 346 if (fe->ops.set_frontend)
347 fe->ops.set_frontend(fe, &fepriv->parameters);
1da177e4
LT		 348
349 fepriv->parameters.frequency = original_frequency;
350 fepriv->parameters.inversion = original_inversion;
351
352 fepriv->auto_sub_step++;
353 return 0;
354}
355
36cb557a
AQ		 356static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
357{
30d9464c 358 fe_status_t s = 0;
36cb557a
AQ		 359 struct dvb_frontend_private *fepriv = fe->frontend_priv;
360
361 /* if we've got no parameters, just keep idling */
362 if (fepriv->state & FESTATE_IDLE) {
363 fepriv->delay = 3*HZ;
364 fepriv->quality = 0;
365 return;
366 }
367
368 /* in SCAN mode, we just set the frontend when asked and leave it alone */
369 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
370 if (fepriv->state & FESTATE_RETUNE) {
dea74869
PB		 371 if (fe->ops.set_frontend)
372 fe->ops.set_frontend(fe, &fepriv->parameters);
36cb557a
AQ		 373 fepriv->state = FESTATE_TUNED;
374 }
375 fepriv->delay = 3*HZ;
376 fepriv->quality = 0;
377 return;
378 }
379
380 /* get the frontend status */
381 if (fepriv->state & FESTATE_RETUNE) {
382 s = 0;
383 } else {
dea74869
PB		 384 if (fe->ops.read_status)
385 fe->ops.read_status(fe, &s);
36cb557a
AQ		 386 if (s != fepriv->status) {
387 dvb_frontend_add_event(fe, s);
388 fepriv->status = s;
389 }
390 }
391
392 /* if we're not tuned, and we have a lock, move to the TUNED state */
393 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
394 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
395 fepriv->state = FESTATE_TUNED;
396
397 /* if we're tuned, then we have determined the correct inversion */
dea74869 398 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
36cb557a
AQ		 399 (fepriv->parameters.inversion == INVERSION_AUTO)) {
400 fepriv->parameters.inversion = fepriv->inversion;
401 }
402 return;
403 }
404
405 /* if we are tuned already, check we're still locked */
406 if (fepriv->state & FESTATE_TUNED) {
407 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
408
409 /* we're tuned, and the lock is still good... */
410 if (s & FE_HAS_LOCK) {
411 return;
412 } else { /* if we _WERE_ tuned, but now don't have a lock */
413 fepriv->state = FESTATE_ZIGZAG_FAST;
414 fepriv->started_auto_step = fepriv->auto_step;
415 fepriv->check_wrapped = 0;
416 }
417 }
418
419 /* don't actually do anything if we're in the LOSTLOCK state,
420 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
421 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 422 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 423 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
424 return;
425 }
426
427 /* don't do anything if we're in the DISEQC state, since this
428 * might be someone with a motorized dish controlled by DISEQC.
429 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
430 if (fepriv->state & FESTATE_DISEQC) {
431 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
432 return;
433 }
434
435 /* if we're in the RETUNE state, set everything up for a brand
436 * new scan, keeping the current inversion setting, as the next
437 * tune is _very_ likely to require the same */
438 if (fepriv->state & FESTATE_RETUNE) {
439 fepriv->lnb_drift = 0;
440 fepriv->auto_step = 0;
441 fepriv->auto_sub_step = 0;
442 fepriv->started_auto_step = 0;
443 fepriv->check_wrapped = 0;
444 }
445
446 /* fast zigzag. */
447 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
448 fepriv->delay = fepriv->min_delay;
449
450 /* peform a tune */
451 if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) {
452 /* OK, if we've run out of trials at the fast speed.
453 * Drop back to slow for the _next_ attempt */
454 fepriv->state = FESTATE_SEARCHING_SLOW;
455 fepriv->started_auto_step = fepriv->auto_step;
456 return;
457 }
458 fepriv->check_wrapped = 1;
459
460 /* if we've just retuned, enter the ZIGZAG_FAST state.
461 * This ensures we cannot return from an
462 * FE_SET_FRONTEND ioctl before the first frontend tune
463 * occurs */
464 if (fepriv->state & FESTATE_RETUNE) {
465 fepriv->state = FESTATE_TUNING_FAST;
466 }
467 }
468
469 /* slow zigzag */
470 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
471 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
472
473 /* Note: don't bother checking for wrapping; we stay in this
474 * state until we get a lock */
475 dvb_frontend_swzigzag_autotune(fe, 0);
476 }
477}
478
1da177e4
LT		 479static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
480{
0c53c70f 481 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 482
483 if (fepriv->exit)
484 return 1;
485
486 if (fepriv->dvbdev->writers == 1)
cc89c229 487 if (time_after(jiffies, fepriv->release_jiffies +
36cb557a 488 dvb_shutdown_timeout * HZ))
1da177e4
LT		 489 return 1;
490
491 return 0;
492}
493
494static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
495{
0c53c70f 496 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 497
498 if (fepriv->wakeup) {
499 fepriv->wakeup = 0;
500 return 1;
501 }
502 return dvb_frontend_is_exiting(fe);
503}
504
505static void dvb_frontend_wakeup(struct dvb_frontend *fe)
506{
0c53c70f 507 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 508
509 fepriv->wakeup = 1;
510 wake_up_interruptible(&fepriv->wait_queue);
511}
512
1da177e4
LT		 513static int dvb_frontend_thread(void *data)
514{
0c53c70f
JS		 515 struct dvb_frontend *fe = data;
516 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 517 unsigned long timeout;
1da177e4 518 fe_status_t s;
36cb557a 519 struct dvb_frontend_parameters *params;
1da177e4 520
46b4f7c1 521 dprintk("%s\n", __func__);
1da177e4 522
36cb557a
AQ		 523 fepriv->check_wrapped = 0;
524 fepriv->quality = 0;
525 fepriv->delay = 3*HZ;
1da177e4 526 fepriv->status = 0;
1da177e4 527 fepriv->wakeup = 0;
04c56d0e
AQ		 528 fepriv->reinitialise = 0;
529
530 dvb_frontend_init(fe);
1da177e4 531
83144186 532 set_freezable();
1da177e4
LT		 533 while (1) {
534 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 535restart:
1da177e4 536 timeout = wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 537 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
538 || freezing(current),
8eec1429
HP		 539 fepriv->delay);
540
541 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4
LT		 542 /* got signal or quitting */
543 break;
544 }
545
8eec1429 546 if (try_to_freeze())
6591691b 547 goto restart;
1da177e4
LT		 548
549 if (down_interruptible(&fepriv->sem))
550 break;
551
86f40cc3
AQ		 552 if (fepriv->reinitialise) {
553 dvb_frontend_init(fe);
64454016 554 if (fepriv->tone != -1) {
dea74869 555 fe->ops.set_tone(fe, fepriv->tone);
64454016
AQ		 556 }
557 if (fepriv->voltage != -1) {
dea74869 558 fe->ops.set_voltage(fe, fepriv->voltage);
64454016 559 }
86f40cc3
AQ		 560 fepriv->reinitialise = 0;
561 }
562
36cb557a 563 /* do an iteration of the tuning loop */
d772bd03
MA		 564 if (fe->ops.get_frontend_algo) {
565 if (fe->ops.get_frontend_algo(fe) == FE_ALGO_HW) {
566 /* have we been asked to retune? */
567 params = NULL;
568 if (fepriv->state & FESTATE_RETUNE) {
569 params = &fepriv->parameters;
570 fepriv->state = FESTATE_TUNED;
571 }
572
573 fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
574 if (s != fepriv->status) {
575 dvb_frontend_add_event(fe, s);
576 fepriv->status = s;
577 }
70d90635
MA		 578 } else
579 dvb_frontend_swzigzag(fe);
4a4edcca
MA		 580 } else
581 dvb_frontend_swzigzag(fe);
1da177e4
LT		 582 }
583
608f62d6
OE		 584 if (dvb_powerdown_on_sleep) {
585 if (fe->ops.set_voltage)
586 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869
PB		 587 if (fe->ops.tuner_ops.sleep) {
588 fe->ops.tuner_ops.sleep(fe);
589 if (fe->ops.i2c_gate_ctrl)
590 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 591 }
dea74869
PB		 592 if (fe->ops.sleep)
593 fe->ops.sleep(fe);
1da177e4
LT		 594 }
595
8eec1429 596 fepriv->thread = NULL;
1da177e4
LT		 597 mb();
598
599 dvb_frontend_wakeup(fe);
600 return 0;
601}
602
603static void dvb_frontend_stop(struct dvb_frontend *fe)
604{
0c53c70f 605 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 606
46b4f7c1 607 dprintk ("%s\n", __func__);
1da177e4
LT		 608
609 fepriv->exit = 1;
610 mb();
611
8eec1429 612 if (!fepriv->thread)
1da177e4
LT		 613 return;
614
8eec1429 615 kthread_stop(fepriv->thread);
ca5be9cd 616
8eec1429 617 init_MUTEX (&fepriv->sem);
1da177e4
LT		 618 fepriv->state = FESTATE_IDLE;
619
620 /* paranoia check in case a signal arrived */
8eec1429
HP		 621 if (fepriv->thread)
622 printk("dvb_frontend_stop: warning: thread %p won't exit\n",
623 fepriv->thread);
1da177e4
LT		 624}
625
83b75b04
N		 626s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
627{
628 return ((curtime.tv_usec < lasttime.tv_usec) ?
629 1000000 - lasttime.tv_usec + curtime.tv_usec :
630 curtime.tv_usec - lasttime.tv_usec);
631}
632EXPORT_SYMBOL(timeval_usec_diff);
633
634static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
635{
636 curtime->tv_usec += add_usec;
637 if (curtime->tv_usec >= 1000000) {
638 curtime->tv_usec -= 1000000;
639 curtime->tv_sec++;
640 }
641}
642
643/*
644 * Sleep until gettimeofday() > waketime + add_usec
645 * This needs to be as precise as possible, but as the delay is
646 * usually between 2ms and 32ms, it is done using a scheduled msleep
647 * followed by usleep (normally a busy-wait loop) for the remainder
648 */
649void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
650{
651 struct timeval lasttime;
652 s32 delta, newdelta;
653
654 timeval_usec_add(waketime, add_usec);
655
656 do_gettimeofday(&lasttime);
657 delta = timeval_usec_diff(lasttime, *waketime);
658 if (delta > 2500) {
659 msleep((delta - 1500) / 1000);
660 do_gettimeofday(&lasttime);
661 newdelta = timeval_usec_diff(lasttime, *waketime);
662 delta = (newdelta > delta) ? 0 : newdelta;
663 }
664 if (delta > 0)
665 udelay(delta);
666}
667EXPORT_SYMBOL(dvb_frontend_sleep_until);
668
1da177e4
LT		 669static int dvb_frontend_start(struct dvb_frontend *fe)
670{
671 int ret;
0c53c70f 672 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 673 struct task_struct *fe_thread;
1da177e4 674
46b4f7c1 675 dprintk ("%s\n", __func__);
1da177e4 676
8eec1429 677 if (fepriv->thread) {
1da177e4
LT		 678 if (!fepriv->exit)
679 return 0;
680 else
681 dvb_frontend_stop (fe);
682 }
683
684 if (signal_pending(current))
685 return -EINTR;
686 if (down_interruptible (&fepriv->sem))
687 return -EINTR;
688
689 fepriv->state = FESTATE_IDLE;
690 fepriv->exit = 0;
8eec1429 691 fepriv->thread = NULL;
1da177e4
LT		 692 mb();
693
8eec1429 694 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 695 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 696 if (IS_ERR(fe_thread)) {
697 ret = PTR_ERR(fe_thread);
698 printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
1da177e4
LT		 699 up(&fepriv->sem);
700 return ret;
701 }
8eec1429 702 fepriv->thread = fe_thread;
1da177e4
LT		 703 return 0;
704}
705
c471b331
OE		 706static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe,
707 u32 *freq_min, u32 *freq_max)
708{
709 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
710
711 if (fe->ops.info.frequency_max == 0)
712 *freq_max = fe->ops.tuner_ops.info.frequency_max;
713 else if (fe->ops.tuner_ops.info.frequency_max == 0)
714 *freq_max = fe->ops.info.frequency_max;
715 else
716 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
717
718 if (*freq_min == 0 || *freq_max == 0)
363c35fc
ST		 719 printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
720 fe->dvb->num,fe->id);
c471b331
OE		 721}
722
1fab46f0
OE		 723static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
724 struct dvb_frontend_parameters *parms)
725{
c471b331
OE		 726 u32 freq_min;
727 u32 freq_max;
728
1fab46f0 729 /* range check: frequency */
c471b331
OE		 730 dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max);
731 if ((freq_min && parms->frequency < freq_min) ||
732 (freq_max && parms->frequency > freq_max)) {
363c35fc
ST		 733 printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
734 fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max);
1fab46f0
OE		 735 return -EINVAL;
736 }
737
738 /* range check: symbol rate */
739 if (fe->ops.info.type == FE_QPSK) {
740 if ((fe->ops.info.symbol_rate_min &&
741 parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
742 (fe->ops.info.symbol_rate_max &&
743 parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 744 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
745 fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate,
1fab46f0
OE		 746 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
747 return -EINVAL;
748 }
749
750 } else if (fe->ops.info.type == FE_QAM) {
751 if ((fe->ops.info.symbol_rate_min &&
752 parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
753 (fe->ops.info.symbol_rate_max &&
754 parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 755 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
756 fe->dvb->num, fe->id, parms->u.qam.symbol_rate,
1fab46f0
OE		 757 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
758 return -EINVAL;
759 }
760 }
761
762 return 0;
763}
764
56f0680a 765struct dtv_cmds_h dtv_cmds[] = {
e7fee0f3
ST		 766 [DTV_TUNE] = {
767 .name = "DTV_TUNE",
768 .cmd = DTV_TUNE,
6b73eeaf
ST		 769 .set = 1,
770 },
e7fee0f3
ST		 771 [DTV_CLEAR] = {
772 .name = "DTV_CLEAR",
773 .cmd = DTV_CLEAR,
6b73eeaf
ST		 774 .set = 1,
775 },
776
777 /* Set */
363429a0
ST		 778 [DTV_FREQUENCY] = {
779 .name = "DTV_FREQUENCY",
780 .cmd = DTV_FREQUENCY,
6b73eeaf
ST		 781 .set = 1,
782 },
75b7f943
ST		 783 [DTV_BANDWIDTH_HZ] = {
784 .name = "DTV_BANDWIDTH_HZ",
785 .cmd = DTV_BANDWIDTH_HZ,
6b73eeaf
ST		 786 .set = 1,
787 },
363429a0
ST		 788 [DTV_MODULATION] = {
789 .name = "DTV_MODULATION",
790 .cmd = DTV_MODULATION,
6b73eeaf
ST		 791 .set = 1,
792 },
363429a0
ST		 793 [DTV_INVERSION] = {
794 .name = "DTV_INVERSION",
795 .cmd = DTV_INVERSION,
6b73eeaf
ST		 796 .set = 1,
797 },
363429a0
ST		 798 [DTV_DISEQC_MASTER] = {
799 .name = "DTV_DISEQC_MASTER",
800 .cmd = DTV_DISEQC_MASTER,
6b73eeaf
ST		 801 .set = 1,
802 .buffer = 1,
803 },
363429a0
ST		 804 [DTV_SYMBOL_RATE] = {
805 .name = "DTV_SYMBOL_RATE",
806 .cmd = DTV_SYMBOL_RATE,
6b73eeaf
ST		 807 .set = 1,
808 },
363429a0
ST		 809 [DTV_INNER_FEC] = {
810 .name = "DTV_INNER_FEC",
811 .cmd = DTV_INNER_FEC,
6b73eeaf
ST		 812 .set = 1,
813 },
363429a0
ST		 814 [DTV_VOLTAGE] = {
815 .name = "DTV_VOLTAGE",
816 .cmd = DTV_VOLTAGE,
6b73eeaf
ST		 817 .set = 1,
818 },
363429a0
ST		 819 [DTV_TONE] = {
820 .name = "DTV_TONE",
821 .cmd = DTV_TONE,
6b73eeaf
ST		 822 .set = 1,
823 },
363429a0
ST		 824 [DTV_PILOT] = {
825 .name = "DTV_PILOT",
826 .cmd = DTV_PILOT,
6b73eeaf
ST		 827 .set = 1,
828 },
363429a0
ST		 829 [DTV_ROLLOFF] = {
830 .name = "DTV_ROLLOFF",
831 .cmd = DTV_ROLLOFF,
6b73eeaf
ST		 832 .set = 1,
833 },
363429a0
ST		 834 [DTV_DELIVERY_SYSTEM] = {
835 .name = "DTV_DELIVERY_SYSTEM",
836 .cmd = DTV_DELIVERY_SYSTEM,
6b73eeaf
ST		 837 .set = 1,
838 },
ef526f42
ST		 839 [DTV_HIERARCHY] = {
840 .name = "DTV_HIERARCHY",
841 .cmd = DTV_HIERARCHY,
842 .set = 1,
843 },
a4de91be
ST		 844 [DTV_CODE_RATE_HP] = {
845 .name = "DTV_CODE_RATE_HP",
846 .cmd = DTV_CODE_RATE_HP,
847 .set = 1,
848 },
849 [DTV_CODE_RATE_LP] = {
850 .name = "DTV_CODE_RATE_LP",
851 .cmd = DTV_CODE_RATE_LP,
852 .set = 1,
853 },
b87625f0
ST		 854 [DTV_GUARD_INTERVAL] = {
855 .name = "DTV_GUARD_INTERVAL",
856 .cmd = DTV_GUARD_INTERVAL,
857 .set = 1,
858 },
859 [DTV_TRANSMISSION_MODE] = {
860 .name = "DTV_TRANSMISSION_MODE",
861 .cmd = DTV_TRANSMISSION_MODE,
862 .set = 1,
863 },
6b73eeaf 864 /* Get */
363429a0
ST		 865 [DTV_DISEQC_SLAVE_REPLY] = {
866 .name = "DTV_DISEQC_SLAVE_REPLY",
867 .cmd = DTV_DISEQC_SLAVE_REPLY,
6b73eeaf
ST		 868 .set = 0,
869 .buffer = 1,
870 },
eacf8d8d
ST		 871 [DTV_API_VERSION] = {
872 .name = "DTV_API_VERSION",
873 .cmd = DTV_API_VERSION,
874 .set = 0,
875 },
a4de91be
ST		 876 [DTV_CODE_RATE_HP] = {
877 .name = "DTV_CODE_RATE_HP",
878 .cmd = DTV_CODE_RATE_HP,
879 .set = 0,
880 },
881 [DTV_CODE_RATE_LP] = {
882 .name = "DTV_CODE_RATE_LP",
883 .cmd = DTV_CODE_RATE_LP,
884 .set = 0,
885 },
b87625f0
ST		 886 [DTV_GUARD_INTERVAL] = {
887 .name = "DTV_GUARD_INTERVAL",
888 .cmd = DTV_GUARD_INTERVAL,
889 .set = 0,
890 },
891 [DTV_TRANSMISSION_MODE] = {
892 .name = "DTV_TRANSMISSION_MODE",
893 .cmd = DTV_TRANSMISSION_MODE,
894 .set = 0,
895 },
ef526f42
ST		 896 [DTV_HIERARCHY] = {
897 .name = "DTV_HIERARCHY",
898 .cmd = DTV_HIERARCHY,
899 .set = 0,
900 },
6b73eeaf
ST		 901};
902
e7fee0f3 903void dtv_property_dump(struct dtv_property *tvp)
6b73eeaf
ST		 904{
905 int i;
906
82d7669d 907 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
a1bc84c0 908 printk(KERN_WARNING "%s: tvp.cmd = 0x%08x undefined\n",
4aae8efb
DB		 909 __func__, tvp->cmd);
910 return;
911 }
912
a1bc84c0
ST		 913 dprintk("%s() tvp.cmd = 0x%08x (%s)\n"
914 ,__func__
6b73eeaf 915 ,tvp->cmd
56f0680a 916 ,dtv_cmds[ tvp->cmd ].name);
6b73eeaf 917
56f0680a 918 if(dtv_cmds[ tvp->cmd ].buffer) {
6b73eeaf 919
a1bc84c0
ST		 920 dprintk("%s() tvp.u.buffer.len = 0x%02x\n"
921 ,__func__
6b73eeaf
ST		 922 ,tvp->u.buffer.len);
923
924 for(i = 0; i < tvp->u.buffer.len; i++)
a1bc84c0
ST		 925 dprintk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
926 ,__func__
6b73eeaf
ST		 927 ,i
928 ,tvp->u.buffer.data[i]);
929
930 } else
a1bc84c0 931 dprintk("%s() tvp.u.data = 0x%08x\n", __func__, tvp->u.data);
6b73eeaf
ST		 932}
933
934int is_legacy_delivery_system(fe_delivery_system_t s)
935{
936 if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) ||
3fa37deb
DH		 937 (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS) ||
938 (s == SYS_ATSC))
6b73eeaf
ST		 939 return 1;
940
941 return 0;
942}
943
ee33c525
ST		 944/* Synchronise the legacy tuning parameters into the cache, so that demodulator
945 * drivers can use a single set_frontend tuning function, regardless of whether
946 * it's being used for the legacy or new API, reducing code and complexity.
947 */
948void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
949{
950 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
951
952 c->frequency = p->frequency;
953 c->inversion = p->inversion;
954
955 switch (fe->ops.info.type) {
956 case FE_QPSK:
e5cefa82
DB		 957 c->modulation = QPSK; /* implied for DVB-S in legacy API */
958 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
ee33c525
ST		 959 c->symbol_rate = p->u.qpsk.symbol_rate;
960 c->fec_inner = p->u.qpsk.fec_inner;
80a773c9 961 c->delivery_system = SYS_DVBS;
ee33c525
ST		 962 break;
963 case FE_QAM:
964 c->symbol_rate = p->u.qam.symbol_rate;
965 c->fec_inner = p->u.qam.fec_inner;
966 c->modulation = p->u.qam.modulation;
80a773c9 967 c->delivery_system = SYS_DVBC_ANNEX_AC;
ee33c525
ST		 968 break;
969 case FE_OFDM:
75b7f943
ST		 970 if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
971 c->bandwidth_hz = 6000000;
972 else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
973 c->bandwidth_hz = 7000000;
974 else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
975 c->bandwidth_hz = 8000000;
976 else
977 /* Including BANDWIDTH_AUTO */
978 c->bandwidth_hz = 0;
ee33c525
ST		 979 c->code_rate_HP = p->u.ofdm.code_rate_HP;
980 c->code_rate_LP = p->u.ofdm.code_rate_LP;
981 c->modulation = p->u.ofdm.constellation;
982 c->transmission_mode = p->u.ofdm.transmission_mode;
983 c->guard_interval = p->u.ofdm.guard_interval;
984 c->hierarchy = p->u.ofdm.hierarchy_information;
80a773c9 985 c->delivery_system = SYS_DVBT;
ee33c525
ST		 986 break;
987 case FE_ATSC:
988 c->modulation = p->u.vsb.modulation;
80a773c9
ST		 989 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
990 c->delivery_system = SYS_ATSC;
991 else
992 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525
ST		 993 break;
994 }
995}
996
d5748f10
ST		 997/* Ensure the cached values are set correctly in the frontend
998 * legacy tuning structures, for the advanced tuning API.
999 */
1000void dtv_property_legacy_params_sync(struct dvb_frontend *fe)
6b73eeaf 1001{
d5748f10
ST		 1002 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1003 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1004 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1005
d5748f10
ST		 1006 p->frequency = c->frequency;
1007 p->inversion = c->inversion;
6b73eeaf 1008
d5748f10
ST		 1009 switch (fe->ops.info.type) {
1010 case FE_QPSK:
a1bc84c0 1011 dprintk("%s() Preparing QPSK req\n", __func__);
d5748f10
ST		 1012 p->u.qpsk.symbol_rate = c->symbol_rate;
1013 p->u.qpsk.fec_inner = c->fec_inner;
80a773c9 1014 c->delivery_system = SYS_DVBS;
d5748f10
ST		 1015 break;
1016 case FE_QAM:
a1bc84c0 1017 dprintk("%s() Preparing QAM req\n", __func__);
d5748f10
ST		 1018 p->u.qam.symbol_rate = c->symbol_rate;
1019 p->u.qam.fec_inner = c->fec_inner;
1020 p->u.qam.modulation = c->modulation;
80a773c9 1021 c->delivery_system = SYS_DVBC_ANNEX_AC;
d5748f10
ST		 1022 break;
1023 case FE_OFDM:
a1bc84c0 1024 dprintk("%s() Preparing OFDM req\n", __func__);
75b7f943
ST		 1025 if (c->bandwidth_hz == 6000000)
1026 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1027 else if (c->bandwidth_hz == 7000000)
1028 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1029 else if (c->bandwidth_hz == 8000000)
1030 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
1031 else
1032 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 1033 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1034 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1035 p->u.ofdm.constellation = c->modulation;
1036 p->u.ofdm.transmission_mode = c->transmission_mode;
1037 p->u.ofdm.guard_interval = c->guard_interval;
1038 p->u.ofdm.hierarchy_information = c->hierarchy;
80a773c9 1039 c->delivery_system = SYS_DVBT;
d5748f10
ST		 1040 break;
1041 case FE_ATSC:
a1bc84c0 1042 dprintk("%s() Preparing VSB req\n", __func__);
d5748f10 1043 p->u.vsb.modulation = c->modulation;
80a773c9
ST		 1044 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1045 c->delivery_system = SYS_ATSC;
1046 else
1047 c->delivery_system = SYS_DVBC_ANNEX_B;
d5748f10
ST		 1048 break;
1049 }
1050}
1051
1052/* Ensure the cached values are set correctly in the frontend
1053 * legacy tuning structures, for the legacy tuning API.
1054 */
1055void dtv_property_adv_params_sync(struct dvb_frontend *fe)
1056{
56f0680a 1057 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1058 struct dvb_frontend_private *fepriv = fe->frontend_priv;
d5748f10 1059 struct dvb_frontend_parameters *p = &fepriv->parameters;
6b73eeaf 1060
d5748f10
ST		 1061 p->frequency = c->frequency;
1062 p->inversion = c->inversion;
1063
1064 switch(c->modulation) {
0a6393ae
ST		 1065 case PSK_8:
1066 case APSK_16:
97854829 1067 case APSK_32:
0a6393ae 1068 case QPSK:
d5748f10
ST		 1069 p->u.qpsk.symbol_rate = c->symbol_rate;
1070 p->u.qpsk.fec_inner = c->fec_inner;
1071 break;
1072 default:
1073 break;
1074 }
1075
1076 if(c->delivery_system == SYS_ISDBT) {
1077 /* Fake out a generic DVB-T request so we pass validation in the ioctl */
1078 p->frequency = c->frequency;
1079 p->inversion = INVERSION_AUTO;
1080 p->u.ofdm.constellation = QAM_AUTO;
1081 p->u.ofdm.code_rate_HP = FEC_AUTO;
1082 p->u.ofdm.code_rate_LP = FEC_AUTO;
1083 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
1084 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
1085 p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
1086 p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
1087 }
1088}
1089
1090void dtv_property_cache_submit(struct dvb_frontend *fe)
1091{
1092 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1093
d5748f10
ST		 1094 /* For legacy delivery systems we don't need the delivery_system to
1095 * be specified, but we populate the older structures from the cache
1096 * so we can call set_frontend on older drivers.
1097 */
6b73eeaf 1098 if(is_legacy_delivery_system(c->delivery_system)) {
6b73eeaf 1099
a1bc84c0 1100 dprintk("%s() legacy, modulation = %d\n", __func__, c->modulation);
d5748f10 1101 dtv_property_legacy_params_sync(fe);
6b73eeaf 1102
6b73eeaf 1103 } else {
a1bc84c0 1104 dprintk("%s() adv, modulation = %d\n", __func__, c->modulation);
d5748f10 1105
6b73eeaf
ST		 1106 /* For advanced delivery systems / modulation types ...
1107 * we seed the lecacy dvb_frontend_parameters structure
1108 * so that the sanity checking code later in the IOCTL processing
1109 * can validate our basic frequency ranges, symbolrates, modulation
1110 * etc.
1111 */
d5748f10 1112 dtv_property_adv_params_sync(fe);
6b73eeaf 1113 }
6b73eeaf
ST		 1114}
1115
13c97bf5
ST		 1116static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1117 unsigned int cmd, void *parg);
1118static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1119 unsigned int cmd, void *parg);
1120
363429a0
ST		 1121int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp,
1122 struct inode *inode, struct file *file)
1123{
1124 int r = 0;
1125
363429a0
ST		 1126 dtv_property_dump(tvp);
1127
bfbf2dae
ST		 1128 /* Allow the frontend to validate incoming properties */
1129 if (fe->ops.get_property)
1130 r = fe->ops.get_property(fe, tvp);
1131
1132 if (r < 0)
1133 return r;
1134
363429a0
ST		 1135 switch(tvp->cmd) {
1136 case DTV_FREQUENCY:
1137 tvp->u.data = fe->dtv_property_cache.frequency;
1138 break;
1139 case DTV_MODULATION:
1140 tvp->u.data = fe->dtv_property_cache.modulation;
1141 break;
75b7f943
ST		 1142 case DTV_BANDWIDTH_HZ:
1143 tvp->u.data = fe->dtv_property_cache.bandwidth_hz;
363429a0
ST		 1144 break;
1145 case DTV_INVERSION:
1146 tvp->u.data = fe->dtv_property_cache.inversion;
1147 break;
1148 case DTV_SYMBOL_RATE:
1149 tvp->u.data = fe->dtv_property_cache.symbol_rate;
1150 break;
1151 case DTV_INNER_FEC:
1152 tvp->u.data = fe->dtv_property_cache.fec_inner;
1153 break;
1154 case DTV_PILOT:
1155 tvp->u.data = fe->dtv_property_cache.pilot;
1156 break;
1157 case DTV_ROLLOFF:
1158 tvp->u.data = fe->dtv_property_cache.rolloff;
1159 break;
1160 case DTV_DELIVERY_SYSTEM:
1161 tvp->u.data = fe->dtv_property_cache.delivery_system;
1162 break;
363429a0
ST		 1163 case DTV_VOLTAGE:
1164 tvp->u.data = fe->dtv_property_cache.voltage;
1165 break;
1166 case DTV_TONE:
1167 tvp->u.data = fe->dtv_property_cache.sectone;
1168 break;
eacf8d8d
ST		 1169 case DTV_API_VERSION:
1170 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1171 break;
a4de91be
ST		 1172 case DTV_CODE_RATE_HP:
1173 tvp->u.data = fe->dtv_property_cache.code_rate_HP;
1174 break;
1175 case DTV_CODE_RATE_LP:
1176 tvp->u.data = fe->dtv_property_cache.code_rate_LP;
1177 break;
b87625f0
ST		 1178 case DTV_GUARD_INTERVAL:
1179 tvp->u.data = fe->dtv_property_cache.guard_interval;
1180 break;
1181 case DTV_TRANSMISSION_MODE:
1182 tvp->u.data = fe->dtv_property_cache.transmission_mode;
1183 break;
ef526f42
ST		 1184 case DTV_HIERARCHY:
1185 tvp->u.data = fe->dtv_property_cache.hierarchy;
1186 break;
363429a0
ST		 1187 default:
1188 r = -1;
1189 }
1190
1191 return r;
1192}
1193
1194int dtv_property_process_set(struct dvb_frontend *fe, struct dtv_property *tvp,
13c97bf5 1195 struct inode *inode, struct file *file)
6b73eeaf
ST		 1196{
1197 int r = 0;
13c97bf5 1198 struct dvb_frontend_private *fepriv = fe->frontend_priv;
56f0680a 1199 dtv_property_dump(tvp);
6b73eeaf 1200
bfbf2dae
ST		 1201 /* Allow the frontend to validate incoming properties */
1202 if (fe->ops.set_property)
1203 r = fe->ops.set_property(fe, tvp);
1204
1205 if (r < 0)
1206 return r;
1207
6b73eeaf 1208 switch(tvp->cmd) {
e7fee0f3 1209 case DTV_CLEAR:
6b73eeaf
ST		 1210 /* Reset a cache of data specific to the frontend here. This does
1211 * not effect hardware.
1212 */
a1bc84c0 1213 dprintk("%s() Flushing property cache\n", __func__);
56f0680a 1214 memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties));
e7fee0f3 1215 fe->dtv_property_cache.state = tvp->cmd;
56f0680a 1216 fe->dtv_property_cache.delivery_system = SYS_UNDEFINED;
6b73eeaf 1217 break;
e7fee0f3 1218 case DTV_TUNE:
6b73eeaf 1219 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1220 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1221 * ioctl.
6b73eeaf 1222 */
e7fee0f3 1223 fe->dtv_property_cache.state = tvp->cmd;
a1bc84c0 1224 dprintk("%s() Finalised property cache\n", __func__);
d5748f10
ST		 1225 dtv_property_cache_submit(fe);
1226
13c97bf5
ST		 1227 r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND,
1228 &fepriv->parameters);
6b73eeaf 1229 break;
363429a0 1230 case DTV_FREQUENCY:
56f0680a 1231 fe->dtv_property_cache.frequency = tvp->u.data;
6b73eeaf 1232 break;
363429a0 1233 case DTV_MODULATION:
56f0680a 1234 fe->dtv_property_cache.modulation = tvp->u.data;
6b73eeaf 1235 break;
75b7f943
ST		 1236 case DTV_BANDWIDTH_HZ:
1237 fe->dtv_property_cache.bandwidth_hz = tvp->u.data;
6b73eeaf 1238 break;
363429a0 1239 case DTV_INVERSION:
56f0680a 1240 fe->dtv_property_cache.inversion = tvp->u.data;
6b73eeaf 1241 break;
363429a0 1242 case DTV_SYMBOL_RATE:
56f0680a 1243 fe->dtv_property_cache.symbol_rate = tvp->u.data;
6b73eeaf 1244 break;
363429a0 1245 case DTV_INNER_FEC:
56f0680a 1246 fe->dtv_property_cache.fec_inner = tvp->u.data;
6b73eeaf 1247 break;
363429a0 1248 case DTV_PILOT:
56f0680a 1249 fe->dtv_property_cache.pilot = tvp->u.data;
6b73eeaf 1250 break;
363429a0 1251 case DTV_ROLLOFF:
56f0680a 1252 fe->dtv_property_cache.rolloff = tvp->u.data;
6b73eeaf 1253 break;
363429a0 1254 case DTV_DELIVERY_SYSTEM:
56f0680a 1255 fe->dtv_property_cache.delivery_system = tvp->u.data;
6b73eeaf 1256 break;
363429a0 1257 case DTV_VOLTAGE:
56f0680a 1258 fe->dtv_property_cache.voltage = tvp->u.data;
13c97bf5 1259 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE,
56f0680a 1260 (void *)fe->dtv_property_cache.voltage);
13c97bf5 1261 break;
363429a0 1262 case DTV_TONE:
56f0680a 1263 fe->dtv_property_cache.sectone = tvp->u.data;
13c97bf5 1264 r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE,
56f0680a 1265 (void *)fe->dtv_property_cache.sectone);
13c97bf5 1266 break;
a4de91be
ST		 1267 case DTV_CODE_RATE_HP:
1268 fe->dtv_property_cache.code_rate_HP = tvp->u.data;
1269 break;
1270 case DTV_CODE_RATE_LP:
1271 fe->dtv_property_cache.code_rate_LP = tvp->u.data;
1272 break;
b87625f0
ST		 1273 case DTV_GUARD_INTERVAL:
1274 fe->dtv_property_cache.guard_interval = tvp->u.data;
1275 break;
1276 case DTV_TRANSMISSION_MODE:
1277 fe->dtv_property_cache.transmission_mode = tvp->u.data;
1278 break;
ef526f42
ST		 1279 case DTV_HIERARCHY:
1280 fe->dtv_property_cache.hierarchy = tvp->u.data;
1281 break;
363429a0
ST		 1282 default:
1283 r = -1;
6b73eeaf
ST		 1284 }
1285
13c97bf5 1286 return r;
6b73eeaf
ST		 1287}
1288
1da177e4
LT		 1289static int dvb_frontend_ioctl(struct inode *inode, struct file *file,
1290 unsigned int cmd, void *parg)
1291{
1292 struct dvb_device *dvbdev = file->private_data;
1293 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1294 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1295 int err = -EOPNOTSUPP;
1296
46b4f7c1 1297 dprintk ("%s\n", __func__);
1da177e4 1298
813ce47c 1299 if (fepriv->exit)
1da177e4
LT		 1300 return -ENODEV;
1301
1302 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1303 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1304 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1305 return -EPERM;
1306
1307 if (down_interruptible (&fepriv->sem))
1308 return -ERESTARTSYS;
1309
13c97bf5
ST		 1310 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
1311 err = dvb_frontend_ioctl_properties(inode, file, cmd, parg);
4dd88bec
ST		 1312 else {
1313 fe->dtv_property_cache.state = DTV_UNDEFINED;
13c97bf5 1314 err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg);
4dd88bec 1315 }
13c97bf5
ST		 1316
1317 up(&fepriv->sem);
1318 return err;
1319}
1320
1321static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file,
1322 unsigned int cmd, void *parg)
1323{
1324 struct dvb_device *dvbdev = file->private_data;
1325 struct dvb_frontend *fe = dvbdev->priv;
e6f9ec86 1326 int err = 0;
e7fee0f3
ST		 1327
1328 struct dtv_properties *tvps = NULL;
1329 struct dtv_property *tvp = NULL;
1330 int i;
13c97bf5
ST		 1331
1332 dprintk("%s\n", __func__);
1333
6b73eeaf 1334 if(cmd == FE_SET_PROPERTY) {
e7fee0f3 1335 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1336
a1bc84c0
ST		 1337 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1338 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 1339
1340 /* Put an arbitrary limit on the number of messages that can
1341 * be sent at once */
6068f506 1342 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 1343 return -EINVAL;
1344
1345 tvp = (struct dtv_property *) kmalloc(tvps->num *
1346 sizeof(struct dtv_property), GFP_KERNEL);
1347 if (!tvp) {
1348 err = -ENOMEM;
1349 goto out;
6b73eeaf
ST		 1350 }
1351
e7fee0f3
ST		 1352 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1353 err = -EFAULT;
1354 goto out;
1355 }
1356
d48cb402
ST		 1357 for (i = 0; i < tvps->num; i++) {
1358 (tvp + i)->result = dtv_property_process_set(fe, tvp + i, inode, file);
1359 err |= (tvp + i)->result;
1360 }
e7fee0f3 1361
a1bc84c0
ST		 1362 if(fe->dtv_property_cache.state == DTV_TUNE)
1363 dprintk("%s() Property cache is full, tuning\n", __func__);
bfbf2dae 1364
363429a0
ST		 1365 } else
1366 if(cmd == FE_GET_PROPERTY) {
363429a0
ST		 1367
1368 tvps = (struct dtv_properties __user *)parg;
1369
a1bc84c0
ST		 1370 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1371 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 1372
1373 /* Put an arbitrary limit on the number of messages that can
1374 * be sent at once */
6068f506 1375 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 1376 return -EINVAL;
1377
1378 tvp = (struct dtv_property *) kmalloc(tvps->num *
1379 sizeof(struct dtv_property), GFP_KERNEL);
1380 if (!tvp) {
1381 err = -ENOMEM;
1382 goto out;
1383 }
1384
1385 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1386 err = -EFAULT;
1387 goto out;
1388 }
1389
d48cb402
ST		 1390 for (i = 0; i < tvps->num; i++) {
1391 (tvp + i)->result = dtv_property_process_get(fe, tvp + i, inode, file);
1392 err |= (tvp + i)->result;
1393 }
363429a0
ST		 1394
1395 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1396 err = -EFAULT;
1397 goto out;
1398 }
1399
363429a0
ST		 1400 } else
1401 err = -EOPNOTSUPP;
1402
e7fee0f3
ST		 1403out:
1404 kfree(tvp);
13c97bf5
ST		 1405 return err;
1406}
1407
1408static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file,
1409 unsigned int cmd, void *parg)
1410{
1411 struct dvb_device *dvbdev = file->private_data;
1412 struct dvb_frontend *fe = dvbdev->priv;
1413 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1414 int err = -EOPNOTSUPP;
1415
1da177e4
LT		 1416 switch (cmd) {
1417 case FE_GET_INFO: {
0c53c70f 1418 struct dvb_frontend_info* info = parg;
dea74869 1419 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
c471b331 1420 dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4
LT		 1421
1422 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
1423 * do it, it is done for it. */
1424 info->caps |= FE_CAN_INVERSION_AUTO;
1425 err = 0;
1426 break;
1427 }
1428
6757ccc5
PB		 1429 case FE_READ_STATUS: {
1430 fe_status_t* status = parg;
1431
1432 /* if retune was requested but hasn't occured yet, prevent
1433 * that user get signal state from previous tuning */
1434 if(fepriv->state == FESTATE_RETUNE) {
1435 err=0;
1436 *status = 0;
1437 break;
1438 }
1439
dea74869
PB		 1440 if (fe->ops.read_status)
1441 err = fe->ops.read_status(fe, status);
1da177e4 1442 break;
6757ccc5 1443 }
1da177e4 1444 case FE_READ_BER:
dea74869
PB		 1445 if (fe->ops.read_ber)
1446 err = fe->ops.read_ber(fe, (__u32*) parg);
1da177e4
LT		 1447 break;
1448
1449 case FE_READ_SIGNAL_STRENGTH:
dea74869
PB		 1450 if (fe->ops.read_signal_strength)
1451 err = fe->ops.read_signal_strength(fe, (__u16*) parg);
1da177e4
LT		 1452 break;
1453
1454 case FE_READ_SNR:
dea74869
PB		 1455 if (fe->ops.read_snr)
1456 err = fe->ops.read_snr(fe, (__u16*) parg);
1da177e4
LT		 1457 break;
1458
1459 case FE_READ_UNCORRECTED_BLOCKS:
dea74869
PB		 1460 if (fe->ops.read_ucblocks)
1461 err = fe->ops.read_ucblocks(fe, (__u32*) parg);
1da177e4
LT		 1462 break;
1463
1464
1465 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 1466 if (fe->ops.diseqc_reset_overload) {
1467 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 1468 fepriv->state = FESTATE_DISEQC;
1469 fepriv->status = 0;
1470 }
1471 break;
1472
1473 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 1474 if (fe->ops.diseqc_send_master_cmd) {
1475 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 1476 fepriv->state = FESTATE_DISEQC;
1477 fepriv->status = 0;
1478 }
1479 break;
1480
1481 case FE_DISEQC_SEND_BURST:
dea74869
PB		 1482 if (fe->ops.diseqc_send_burst) {
1483 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 1484 fepriv->state = FESTATE_DISEQC;
1485 fepriv->status = 0;
1486 }
1487 break;
1488
1489 case FE_SET_TONE:
dea74869
PB		 1490 if (fe->ops.set_tone) {
1491 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 1492 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 1493 fepriv->state = FESTATE_DISEQC;
1494 fepriv->status = 0;
1495 }
1496 break;
1497
1498 case FE_SET_VOLTAGE:
dea74869
PB		 1499 if (fe->ops.set_voltage) {
1500 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 1501 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 1502 fepriv->state = FESTATE_DISEQC;
1503 fepriv->status = 0;
1504 }
1505 break;
1506
1507 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 1508 if (fe->ops.dishnetwork_send_legacy_command) {
1509 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 1510 fepriv->state = FESTATE_DISEQC;
1511 fepriv->status = 0;
dea74869 1512 } else if (fe->ops.set_voltage) {
83b75b04
N		 1513 /*
1514 * NOTE: This is a fallback condition. Some frontends
1515 * (stv0299 for instance) take longer than 8msec to
1516 * respond to a set_voltage command. Those switches
1517 * need custom routines to switch properly. For all
1518 * other frontends, the following shoule work ok.
1519 * Dish network legacy switches (as used by Dish500)
1520 * are controlled by sending 9-bit command words
1521 * spaced 8msec apart.
1522 * the actual command word is switch/port dependant
1523 * so it is up to the userspace application to send
1524 * the right command.
1525 * The command must always start with a '0' after
1526 * initialization, so parg is 8 bits and does not
1527 * include the initialization or start bit
1528 */
c6eb8eaf 1529 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 1530 struct timeval nexttime;
1531 struct timeval tv[10];
1532 int i;
1533 u8 last = 1;
1534 if (dvb_frontend_debug)
c6eb8eaf 1535 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 1536 do_gettimeofday(&nexttime);
1537 if (dvb_frontend_debug)
1538 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
1539 /* before sending a command, initialize by sending
1540 * a 32ms 18V to the switch
1541 */
dea74869 1542 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 1543 dvb_frontend_sleep_until(&nexttime, 32000);
1544
1545 for (i = 0; i < 9; i++) {
1546 if (dvb_frontend_debug)
1547 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 1548 if ((swcmd & 0x01) != last) {
83b75b04 1549 /* set voltage to (last ? 13V : 18V) */
dea74869 1550 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 1551 last = (last) ? 0 : 1;
1552 }
c6eb8eaf 1553 swcmd = swcmd >> 1;
83b75b04
N		 1554 if (i != 8)
1555 dvb_frontend_sleep_until(&nexttime, 8000);
1556 }
1557 if (dvb_frontend_debug) {
1558 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 1559 __func__, fe->dvb->num);
83b75b04
N		 1560 for (i = 1; i < 10; i++)
1561 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
1562 }
1563 err = 0;
1564 fepriv->state = FESTATE_DISEQC;
1565 fepriv->status = 0;
1da177e4
LT		 1566 }
1567 break;
1568
1569 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 1570 if (fe->ops.diseqc_recv_slave_reply)
1571 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 1572 break;
1573
1574 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 1575 if (fe->ops.enable_high_lnb_voltage)
1576 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 1577 break;
1578
1579 case FE_SET_FRONTEND: {
1580 struct dvb_frontend_tune_settings fetunesettings;
1581
e7fee0f3 1582 if(fe->dtv_property_cache.state == DTV_TUNE) {
6b73eeaf
ST		 1583 if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) {
1584 err = -EINVAL;
1585 break;
1586 }
1587 } else {
1588 if (dvb_frontend_check_parameters(fe, parg) < 0) {
1589 err = -EINVAL;
1590 break;
1591 }
1fab46f0 1592
6b73eeaf
ST		 1593 memcpy (&fepriv->parameters, parg,
1594 sizeof (struct dvb_frontend_parameters));
1d78cac4 1595 dtv_property_cache_sync(fe, &fepriv->parameters);
6b73eeaf 1596 }
1da177e4
LT		 1597
1598 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
1599 memcpy(&fetunesettings.parameters, parg,
1600 sizeof (struct dvb_frontend_parameters));
1601
1602 /* force auto frequency inversion if requested */
1603 if (dvb_force_auto_inversion) {
1604 fepriv->parameters.inversion = INVERSION_AUTO;
1605 fetunesettings.parameters.inversion = INVERSION_AUTO;
1606 }
dea74869 1607 if (fe->ops.info.type == FE_OFDM) {
1b3c3714 1608 /* without hierarchical coding code_rate_LP is irrelevant,
1da177e4
LT		 1609 * so we tolerate the otherwise invalid FEC_NONE setting */
1610 if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE &&
1611 fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE)
1612 fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO;
1613 }
1614
1615 /* get frontend-specific tuning settings */
dea74869 1616 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
1da177e4
LT		 1617 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
1618 fepriv->max_drift = fetunesettings.max_drift;
1619 fepriv->step_size = fetunesettings.step_size;
1620 } else {
1621 /* default values */
dea74869 1622 switch(fe->ops.info.type) {
1da177e4
LT		 1623 case FE_QPSK:
1624 fepriv->min_delay = HZ/20;
1625 fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000;
1626 fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000;
1627 break;
1628
1629 case FE_QAM:
1630 fepriv->min_delay = HZ/20;
1631 fepriv->step_size = 0; /* no zigzag */
1632 fepriv->max_drift = 0;
1633 break;
1634
1635 case FE_OFDM:
1636 fepriv->min_delay = HZ/20;
dea74869
PB		 1637 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
1638 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
1da177e4
LT		 1639 break;
1640 case FE_ATSC:
4821fb1d
MA		 1641 fepriv->min_delay = HZ/20;
1642 fepriv->step_size = 0;
1643 fepriv->max_drift = 0;
1da177e4
LT		 1644 break;
1645 }
1646 }
1647 if (dvb_override_tune_delay > 0)
1648 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
1649
1650 fepriv->state = FESTATE_RETUNE;
1651 dvb_frontend_wakeup(fe);
1652 dvb_frontend_add_event(fe, 0);
1653 fepriv->status = 0;
1654 err = 0;
1655 break;
1656 }
1657
1658 case FE_GET_EVENT:
1659 err = dvb_frontend_get_event (fe, parg, file->f_flags);
1660 break;
1661
1662 case FE_GET_FRONTEND:
dea74869 1663 if (fe->ops.get_frontend) {
1da177e4 1664 memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters));
dea74869 1665 err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg);
1da177e4
LT		 1666 }
1667 break;
36cb557a
AQ		 1668
1669 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 1670 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 1671 err = 0;
36cb557a 1672 break;
1da177e4
LT		 1673 };
1674
1da177e4
LT		 1675 return err;
1676}
1677
6b73eeaf 1678
1da177e4
LT		 1679static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
1680{
1681 struct dvb_device *dvbdev = file->private_data;
1682 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1683 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 1684
46b4f7c1 1685 dprintk ("%s\n", __func__);
1da177e4
LT		 1686
1687 poll_wait (file, &fepriv->events.wait_queue, wait);
1688
1689 if (fepriv->events.eventw != fepriv->events.eventr)
1690 return (POLLIN | POLLRDNORM | POLLPRI);
1691
1692 return 0;
1693}
1694
1695static int dvb_frontend_open(struct inode *inode, struct file *file)
1696{
1697 struct dvb_device *dvbdev = file->private_data;
1698 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1699 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 1700 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 1701 int ret;
1702
46b4f7c1 1703 dprintk ("%s\n", __func__);
1da177e4 1704
59b1842d
DB		 1705 if (adapter->mfe_shared) {
1706 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 1707
1708 if (adapter->mfe_dvbdev == NULL)
1709 adapter->mfe_dvbdev = dvbdev;
1710
1711 else if (adapter->mfe_dvbdev != dvbdev) {
1712 struct dvb_device
1713 *mfedev = adapter->mfe_dvbdev;
1714 struct dvb_frontend
1715 *mfe = mfedev->priv;
1716 struct dvb_frontend_private
1717 *mfepriv = mfe->frontend_priv;
1718 int mferetry = (dvb_mfe_wait_time << 1);
1719
1720 mutex_unlock (&adapter->mfe_lock);
1721 while (mferetry-- && (mfedev->users != -1 ||
1722 mfepriv->thread != NULL)) {
1723 if(msleep_interruptible(500)) {
1724 if(signal_pending(current))
1725 return -EINTR;
59b1842d 1726 }
6594690b
DB		 1727 }
1728
1729 mutex_lock (&adapter->mfe_lock);
1730 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 1731 mfedev = adapter->mfe_dvbdev;
1732 mfe = mfedev->priv;
1733 mfepriv = mfe->frontend_priv;
6594690b
DB		 1734 if (mfedev->users != -1 ||
1735 mfepriv->thread != NULL) {
1736 mutex_unlock (&adapter->mfe_lock);
1737 return -EBUSY;
59b1842d 1738 }
6594690b 1739 adapter->mfe_dvbdev = dvbdev;
59b1842d 1740 }
59b1842d
DB		 1741 }
1742 }
1743
48136e1e
OE		 1744 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
1745 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 1746 goto err0;
ba7e6f3e
ST		 1747 }
1748
48136e1e
OE		 1749 if ((ret = dvb_generic_open (inode, file)) < 0)
1750 goto err1;
04c56d0e 1751
48136e1e 1752 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 1753 /* normal tune mode when opened R/W */
1754 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
1755 fepriv->tone = -1;
1756 fepriv->voltage = -1;
1757
1da177e4
LT		 1758 ret = dvb_frontend_start (fe);
1759 if (ret)
48136e1e 1760 goto err2;
1da177e4
LT		 1761
1762 /* empty event queue */
1763 fepriv->events.eventr = fepriv->events.eventw = 0;
1764 }
1765
59b1842d
DB		 1766 if (adapter->mfe_shared)
1767 mutex_unlock (&adapter->mfe_lock);
1da177e4 1768 return ret;
48136e1e
OE		 1769
1770err2:
1771 dvb_generic_release(inode, file);
1772err1:
1773 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
1774 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 1775err0:
1776 if (adapter->mfe_shared)
1777 mutex_unlock (&adapter->mfe_lock);
48136e1e 1778 return ret;
1da177e4
LT		 1779}
1780
1781static int dvb_frontend_release(struct inode *inode, struct file *file)
1782{
1783 struct dvb_device *dvbdev = file->private_data;
1784 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 1785 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 1786 int ret;
1da177e4 1787
46b4f7c1 1788 dprintk ("%s\n", __func__);
1da177e4
LT		 1789
1790 if ((file->f_flags & O_ACCMODE) != O_RDONLY)
1791 fepriv->release_jiffies = jiffies;
1792
ca5be9cd
MR		 1793 ret = dvb_generic_release (inode, file);
1794
48136e1e
OE		 1795 if (dvbdev->users == -1) {
1796 if (fepriv->exit == 1) {
1797 fops_put(file->f_op);
1798 file->f_op = NULL;
1799 wake_up(&dvbdev->wait_queue);
1800 }
1801 if (fe->ops.ts_bus_ctrl)
1802 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 1803 }
48136e1e 1804
ca5be9cd 1805 return ret;
1da177e4
LT		 1806}
1807
1808static struct file_operations dvb_frontend_fops = {
1809 .owner = THIS_MODULE,
1810 .ioctl = dvb_generic_ioctl,
1811 .poll = dvb_frontend_poll,
1812 .open = dvb_frontend_open,
1813 .release = dvb_frontend_release
1814};
1815
1816int dvb_register_frontend(struct dvb_adapter* dvb,
1817 struct dvb_frontend* fe)
1818{
1819 struct dvb_frontend_private *fepriv;
1820 static const struct dvb_device dvbdev_template = {
1821 .users = ~0,
1822 .writers = 1,
1823 .readers = (~0)-1,
1824 .fops = &dvb_frontend_fops,
1825 .kernel_ioctl = dvb_frontend_ioctl
1826 };
1827
46b4f7c1 1828 dprintk ("%s\n", __func__);
1da177e4 1829
3593cab5 1830 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 1831 return -ERESTARTSYS;
1832
7408187d 1833 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 1834 if (fe->frontend_priv == NULL) {
3593cab5 1835 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1836 return -ENOMEM;
1837 }
0c53c70f 1838 fepriv = fe->frontend_priv;
1da177e4
LT		 1839
1840 init_MUTEX (&fepriv->sem);
1841 init_waitqueue_head (&fepriv->wait_queue);
1842 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 1843 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 1844 fe->dvb = dvb;
1845 fepriv->inversion = INVERSION_OFF;
1846
363c35fc 1847 printk ("DVB: registering adapter %i frontend %i (%s)...\n",
1da177e4 1848 fe->dvb->num,
363c35fc 1849 fe->id,
dea74869 1850 fe->ops.info.name);
1da177e4
LT		 1851
1852 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
1853 fe, DVB_DEVICE_FRONTEND);
1854
3593cab5 1855 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1856 return 0;
1857}
1858EXPORT_SYMBOL(dvb_register_frontend);
1859
1860int dvb_unregister_frontend(struct dvb_frontend* fe)
1861{
0c53c70f 1862 struct dvb_frontend_private *fepriv = fe->frontend_priv;
46b4f7c1 1863 dprintk ("%s\n", __func__);
1da177e4 1864
57861b43 1865 mutex_lock(&frontend_mutex);
ca5be9cd 1866 dvb_frontend_stop (fe);
57861b43
MR		 1867 mutex_unlock(&frontend_mutex);
1868
1869 if (fepriv->dvbdev->users < -1)
1870 wait_event(fepriv->dvbdev->wait_queue,
1871 fepriv->dvbdev->users==-1);
1872
3593cab5 1873 mutex_lock(&frontend_mutex);
1da177e4 1874 dvb_unregister_device (fepriv->dvbdev);
d9955060 1875
1da177e4
LT		 1876 /* fe is invalid now */
1877 kfree(fepriv);
3593cab5 1878 mutex_unlock(&frontend_mutex);
1da177e4
LT		 1879 return 0;
1880}
1881EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 1882
149ef72d 1883#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 1884void dvb_frontend_detach(struct dvb_frontend* fe)
1885{
1886 void *ptr;
1887
1888 if (fe->ops.release_sec) {
1889 fe->ops.release_sec(fe);
1890 symbol_put_addr(fe->ops.release_sec);
1891 }
1892 if (fe->ops.tuner_ops.release) {
1893 fe->ops.tuner_ops.release(fe);
1894 symbol_put_addr(fe->ops.tuner_ops.release);
1895 }
2426a27e
MK		 1896 if (fe->ops.analog_ops.release) {
1897 fe->ops.analog_ops.release(fe);
1898 symbol_put_addr(fe->ops.analog_ops.release);
1899 }
f52a838b
AQ		 1900 ptr = (void*)fe->ops.release;
1901 if (ptr) {
1902 fe->ops.release(fe);
1903 symbol_put_addr(ptr);
1904 }
1905}
1906#else
1907void dvb_frontend_detach(struct dvb_frontend* fe)
1908{
1909 if (fe->ops.release_sec)
1910 fe->ops.release_sec(fe);
1911 if (fe->ops.tuner_ops.release)
1912 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 1913 if (fe->ops.analog_ops.release)
1914 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 1915 if (fe->ops.release)
1916 fe->ops.release(fe);
1917}
1918#endif
1919EXPORT_SYMBOL(dvb_frontend_detach);
kernel source for telekom puls (alcatel/mediatek)