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[media] saa7134: fix IR handling for HVR-1110
[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb / dvb-core / dvb_frontend.c
CommitLineData
1da177e4
LT		 1/*
2 * dvb_frontend.c: DVB frontend tuning interface/thread
3 *
4 *
5 * Copyright (C) 1999-2001 Ralph Metzler
6 * Marcus Metzler
7 * Holger Waechtler
8 * for convergence integrated media GmbH
9 *
10 * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
26 */
27
8de8594a
MCC		 28/* Enables DVBv3 compatibility bits at the headers */
29#define __DVB_CORE__
30
1da177e4
LT		 31#include <linux/string.h>
32#include <linux/kernel.h>
33#include <linux/sched.h>
34#include <linux/wait.h>
35#include <linux/slab.h>
36#include <linux/poll.h>
4c4cb1b1 37#include <linux/semaphore.h>
1da177e4 38#include <linux/module.h>
1da177e4 39#include <linux/list.h>
7dfb7103 40#include <linux/freezer.h>
cc89c229 41#include <linux/jiffies.h>
8eec1429 42#include <linux/kthread.h>
1da177e4 43#include <asm/processor.h>
1da177e4
LT		 44
45#include "dvb_frontend.h"
46#include "dvbdev.h"
eacf8d8d 47#include <linux/dvb/version.h>
1da177e4
LT		 48
49static int dvb_frontend_debug;
849be2cd 50static int dvb_shutdown_timeout;
1da177e4
LT		 51static int dvb_force_auto_inversion;
52static int dvb_override_tune_delay;
53static int dvb_powerdown_on_sleep = 1;
59b1842d 54static int dvb_mfe_wait_time = 5;
1da177e4
LT		 55
56module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 57MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 58module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 59MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 60module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 61MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 62module_param(dvb_override_tune_delay, int, 0644);
1da177e4 63MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 64module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 65MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 66module_param(dvb_mfe_wait_time, int, 0644);
67MODULE_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		 68
69#define dprintk if (dvb_frontend_debug) printk
70
71#define FESTATE_IDLE 1
72#define FESTATE_RETUNE 2
73#define FESTATE_TUNING_FAST 4
74#define FESTATE_TUNING_SLOW 8
75#define FESTATE_TUNED 16
76#define FESTATE_ZIGZAG_FAST 32
77#define FESTATE_ZIGZAG_SLOW 64
78#define FESTATE_DISEQC 128
01886255 79#define FESTATE_ERROR 256
1da177e4
LT		 80#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
81#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
82#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
83#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16
MA		 84
85#define FE_ALGO_HW 1
1da177e4
LT		 86/*
87 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
88 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
89 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
90 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
91 * FESTATE_TUNED. The frontend has successfully locked on.
92 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
93 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
94 * FESTATE_DISEQC. A DISEQC command has just been issued.
95 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
96 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
97 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
98 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
99 */
100
e36309f5
MC		 101#define DVB_FE_NO_EXIT 0
102#define DVB_FE_NORMAL_EXIT 1
103#define DVB_FE_DEVICE_REMOVED 2
104
3593cab5 105static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 106
107struct dvb_frontend_private {
108
36cb557a 109 /* thread/frontend values */
1da177e4 110 struct dvb_device *dvbdev;
61cb27af 111 struct dvb_frontend_parameters parameters_in;
a5959dbe 112 struct dvb_frontend_parameters parameters_out;
1da177e4
LT		 113 struct dvb_fe_events events;
114 struct semaphore sem;
115 struct list_head list_head;
116 wait_queue_head_t wait_queue;
8eec1429 117 struct task_struct *thread;
1da177e4 118 unsigned long release_jiffies;
36cb557a
AQ		 119 unsigned int exit;
120 unsigned int wakeup;
1da177e4 121 fe_status_t status;
400b7083 122 unsigned long tune_mode_flags;
36cb557a 123 unsigned int delay;
86f40cc3 124 unsigned int reinitialise;
64454016
AQ		 125 int tone;
126 int voltage;
36cb557a
AQ		 127
128 /* swzigzag values */
129 unsigned int state;
130 unsigned int bending;
131 int lnb_drift;
132 unsigned int inversion;
133 unsigned int auto_step;
134 unsigned int auto_sub_step;
135 unsigned int started_auto_step;
136 unsigned int min_delay;
137 unsigned int max_drift;
138 unsigned int step_size;
139 int quality;
140 unsigned int check_wrapped;
c59e7870 141 enum dvbfe_search algo_status;
1da177e4
LT		 142};
143
86f40cc3 144static void dvb_frontend_wakeup(struct dvb_frontend *fe);
a689e365 145static int dtv_get_frontend(struct dvb_frontend *fe,
a689e365
MCC		 146 struct dvb_frontend_parameters *p_out);
147
148static bool has_get_frontend(struct dvb_frontend *fe)
149{
b1e9a650 150 return fe->ops.get_frontend;
a689e365 151}
1da177e4
LT		 152
153static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status)
154{
0c53c70f 155 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 156 struct dvb_fe_events *events = &fepriv->events;
157 struct dvb_frontend_event *e;
158 int wp;
159
46b4f7c1 160 dprintk ("%s\n", __func__);
1da177e4 161
a689e365 162 if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
7c61d80a 163 dtv_get_frontend(fe, &fepriv->parameters_out);
1da177e4 164
77b1e2fb 165 mutex_lock(&events->mtx);
1da177e4 166
77b1e2fb 167 wp = (events->eventw + 1) % MAX_EVENT;
1da177e4
LT		 168 if (wp == events->eventr) {
169 events->overflow = 1;
170 events->eventr = (events->eventr + 1) % MAX_EVENT;
171 }
172
173 e = &events->events[events->eventw];
77b1e2fb 174 e->status = status;
a5959dbe 175 e->parameters = fepriv->parameters_out;
1da177e4
LT		 176
177 events->eventw = wp;
178
03b76123 179 mutex_unlock(&events->mtx);
1da177e4 180
1da177e4
LT		 181 wake_up_interruptible (&events->wait_queue);
182}
183
184static int dvb_frontend_get_event(struct dvb_frontend *fe,
185 struct dvb_frontend_event *event, int flags)
186{
0c53c70f 187 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 188 struct dvb_fe_events *events = &fepriv->events;
189
46b4f7c1 190 dprintk ("%s\n", __func__);
1da177e4
LT		 191
192 if (events->overflow) {
193 events->overflow = 0;
194 return -EOVERFLOW;
195 }
196
197 if (events->eventw == events->eventr) {
198 int ret;
199
200 if (flags & O_NONBLOCK)
201 return -EWOULDBLOCK;
202
203 up(&fepriv->sem);
204
205 ret = wait_event_interruptible (events->wait_queue,
206 events->eventw != events->eventr);
207
208 if (down_interruptible (&fepriv->sem))
209 return -ERESTARTSYS;
210
211 if (ret < 0)
212 return ret;
213 }
214
77b1e2fb
AO		 215 mutex_lock(&events->mtx);
216 *event = events->events[events->eventr];
1da177e4 217 events->eventr = (events->eventr + 1) % MAX_EVENT;
03b76123 218 mutex_unlock(&events->mtx);
1da177e4
LT		 219
220 return 0;
221}
222
20640bea
AO		 223static void dvb_frontend_clear_events(struct dvb_frontend *fe)
224{
225 struct dvb_frontend_private *fepriv = fe->frontend_priv;
226 struct dvb_fe_events *events = &fepriv->events;
227
228 mutex_lock(&events->mtx);
229 events->eventr = events->eventw;
230 mutex_unlock(&events->mtx);
231}
232
1da177e4
LT		 233static void dvb_frontend_init(struct dvb_frontend *fe)
234{
363c35fc 235 dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n",
1da177e4 236 fe->dvb->num,
363c35fc 237 fe->id,
dea74869
PB		 238 fe->ops.info.name);
239
240 if (fe->ops.init)
241 fe->ops.init(fe);
242 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 243 if (fe->ops.i2c_gate_ctrl)
244 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 245 fe->ops.tuner_ops.init(fe);
246 if (fe->ops.i2c_gate_ctrl)
247 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 248 }
1da177e4
LT		 249}
250
86f40cc3
AQ		 251void dvb_frontend_reinitialise(struct dvb_frontend *fe)
252{
253 struct dvb_frontend_private *fepriv = fe->frontend_priv;
254
255 fepriv->reinitialise = 1;
256 dvb_frontend_wakeup(fe);
257}
258EXPORT_SYMBOL(dvb_frontend_reinitialise);
259
36cb557a 260static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 261{
36cb557a 262 int q2;
1da177e4 263
46b4f7c1 264 dprintk ("%s\n", __func__);
1da177e4 265
36cb557a
AQ		 266 if (locked)
267 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
268 else
269 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 270
36cb557a
AQ		 271 q2 = fepriv->quality - 128;
272 q2 *= q2;
1da177e4 273
36cb557a 274 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 275}
276
277/**
278 * Performs automatic twiddling of frontend parameters.
279 *
280 * @param fe The frontend concerned.
281 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
282 * @returns Number of complete iterations that have been performed.
283 */
36cb557a 284static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 285{
286 int autoinversion;
287 int ready = 0;
01886255 288 int fe_set_err = 0;
0c53c70f 289 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4
MCC		 290 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
291 int original_inversion = c->inversion;
292 u32 original_frequency = c->frequency;
1da177e4
LT		 293
294 /* are we using autoinversion? */
dea74869 295 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4 296 (c->inversion == INVERSION_AUTO));
1da177e4
LT		 297
298 /* setup parameters correctly */
299 while(!ready) {
300 /* calculate the lnb_drift */
301 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
302
303 /* wrap the auto_step if we've exceeded the maximum drift */
304 if (fepriv->lnb_drift > fepriv->max_drift) {
305 fepriv->auto_step = 0;
306 fepriv->auto_sub_step = 0;
307 fepriv->lnb_drift = 0;
308 }
309
310 /* perform inversion and +/- zigzag */
311 switch(fepriv->auto_sub_step) {
312 case 0:
313 /* try with the current inversion and current drift setting */
314 ready = 1;
315 break;
316
317 case 1:
318 if (!autoinversion) break;
319
320 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
321 ready = 1;
322 break;
323
324 case 2:
325 if (fepriv->lnb_drift == 0) break;
326
327 fepriv->lnb_drift = -fepriv->lnb_drift;
328 ready = 1;
329 break;
330
331 case 3:
332 if (fepriv->lnb_drift == 0) break;
333 if (!autoinversion) break;
334
335 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
336 fepriv->lnb_drift = -fepriv->lnb_drift;
337 ready = 1;
338 break;
339
340 default:
341 fepriv->auto_step++;
342 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
343 break;
344 }
345
346 if (!ready) fepriv->auto_sub_step++;
347 }
348
349 /* if this attempt would hit where we started, indicate a complete
350 * iteration has occurred */
351 if ((fepriv->auto_step == fepriv->started_auto_step) &&
352 (fepriv->auto_sub_step == 0) && check_wrapped) {
353 return 1;
354 }
355
356 dprintk("%s: drift:%i inversion:%i auto_step:%i "
357 "auto_sub_step:%i started_auto_step:%i\n",
46b4f7c1 358 __func__, fepriv->lnb_drift, fepriv->inversion,
1da177e4
LT		 359 fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step);
360
361 /* set the frontend itself */
ac3852c4 362 c->frequency += fepriv->lnb_drift;
1da177e4 363 if (autoinversion)
ac3852c4
MCC		 364 c->inversion = fepriv->inversion;
365 tmp = *c;
dea74869 366 if (fe->ops.set_frontend)
bc9cd273 367 fe_set_err = fe->ops.set_frontend(fe);
ac3852c4 368 *c = tmp;
01886255
JG		 369 if (fe_set_err < 0) {
370 fepriv->state = FESTATE_ERROR;
371 return fe_set_err;
372 }
1da177e4 373
ac3852c4
MCC		 374 c->frequency = original_frequency;
375 c->inversion = original_inversion;
1da177e4
LT		 376
377 fepriv->auto_sub_step++;
378 return 0;
379}
380
36cb557a
AQ		 381static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
382{
30d9464c 383 fe_status_t s = 0;
01886255 384 int retval = 0;
36cb557a 385 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4 386 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
36cb557a
AQ		 387
388 /* if we've got no parameters, just keep idling */
389 if (fepriv->state & FESTATE_IDLE) {
390 fepriv->delay = 3*HZ;
391 fepriv->quality = 0;
392 return;
393 }
394
395 /* in SCAN mode, we just set the frontend when asked and leave it alone */
396 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
397 if (fepriv->state & FESTATE_RETUNE) {
ac3852c4 398 tmp = *c;
dea74869 399 if (fe->ops.set_frontend)
bc9cd273 400 retval = fe->ops.set_frontend(fe);
ac3852c4 401 *c = tmp;
01886255
JG		 402 if (retval < 0)
403 fepriv->state = FESTATE_ERROR;
404 else
405 fepriv->state = FESTATE_TUNED;
36cb557a
AQ		 406 }
407 fepriv->delay = 3*HZ;
408 fepriv->quality = 0;
409 return;
410 }
411
412 /* get the frontend status */
413 if (fepriv->state & FESTATE_RETUNE) {
414 s = 0;
415 } else {
dea74869
PB		 416 if (fe->ops.read_status)
417 fe->ops.read_status(fe, &s);
36cb557a
AQ		 418 if (s != fepriv->status) {
419 dvb_frontend_add_event(fe, s);
420 fepriv->status = s;
421 }
422 }
423
424 /* if we're not tuned, and we have a lock, move to the TUNED state */
425 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
426 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
427 fepriv->state = FESTATE_TUNED;
428
429 /* if we're tuned, then we have determined the correct inversion */
dea74869 430 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4
MCC		 431 (c->inversion == INVERSION_AUTO)) {
432 c->inversion = fepriv->inversion;
36cb557a
AQ		 433 }
434 return;
435 }
436
437 /* if we are tuned already, check we're still locked */
438 if (fepriv->state & FESTATE_TUNED) {
439 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
440
441 /* we're tuned, and the lock is still good... */
442 if (s & FE_HAS_LOCK) {
443 return;
444 } else { /* if we _WERE_ tuned, but now don't have a lock */
445 fepriv->state = FESTATE_ZIGZAG_FAST;
446 fepriv->started_auto_step = fepriv->auto_step;
447 fepriv->check_wrapped = 0;
448 }
449 }
450
451 /* don't actually do anything if we're in the LOSTLOCK state,
452 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
453 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 454 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 455 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
456 return;
457 }
458
459 /* don't do anything if we're in the DISEQC state, since this
460 * might be someone with a motorized dish controlled by DISEQC.
461 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
462 if (fepriv->state & FESTATE_DISEQC) {
463 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
464 return;
465 }
466
467 /* if we're in the RETUNE state, set everything up for a brand
468 * new scan, keeping the current inversion setting, as the next
469 * tune is _very_ likely to require the same */
470 if (fepriv->state & FESTATE_RETUNE) {
471 fepriv->lnb_drift = 0;
472 fepriv->auto_step = 0;
473 fepriv->auto_sub_step = 0;
474 fepriv->started_auto_step = 0;
475 fepriv->check_wrapped = 0;
476 }
477
478 /* fast zigzag. */
479 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
480 fepriv->delay = fepriv->min_delay;
481
2030c032 482 /* perform a tune */
01886255
JG		 483 retval = dvb_frontend_swzigzag_autotune(fe,
484 fepriv->check_wrapped);
485 if (retval < 0) {
486 return;
487 } else if (retval) {
36cb557a
AQ		 488 /* OK, if we've run out of trials at the fast speed.
489 * Drop back to slow for the _next_ attempt */
490 fepriv->state = FESTATE_SEARCHING_SLOW;
491 fepriv->started_auto_step = fepriv->auto_step;
492 return;
493 }
494 fepriv->check_wrapped = 1;
495
496 /* if we've just retuned, enter the ZIGZAG_FAST state.
497 * This ensures we cannot return from an
498 * FE_SET_FRONTEND ioctl before the first frontend tune
499 * occurs */
500 if (fepriv->state & FESTATE_RETUNE) {
501 fepriv->state = FESTATE_TUNING_FAST;
502 }
503 }
504
505 /* slow zigzag */
506 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
507 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
508
509 /* Note: don't bother checking for wrapping; we stay in this
510 * state until we get a lock */
511 dvb_frontend_swzigzag_autotune(fe, 0);
512 }
513}
514
1da177e4
LT		 515static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
516{
0c53c70f 517 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 518
e36309f5 519 if (fepriv->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 520 return 1;
521
522 if (fepriv->dvbdev->writers == 1)
b9d5efcc 523 if (time_after_eq(jiffies, fepriv->release_jiffies +
36cb557a 524 dvb_shutdown_timeout * HZ))
1da177e4
LT		 525 return 1;
526
527 return 0;
528}
529
530static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
531{
0c53c70f 532 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 533
534 if (fepriv->wakeup) {
535 fepriv->wakeup = 0;
536 return 1;
537 }
538 return dvb_frontend_is_exiting(fe);
539}
540
541static void dvb_frontend_wakeup(struct dvb_frontend *fe)
542{
0c53c70f 543 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 544
545 fepriv->wakeup = 1;
546 wake_up_interruptible(&fepriv->wait_queue);
547}
548
1da177e4
LT		 549static int dvb_frontend_thread(void *data)
550{
0c53c70f
JS		 551 struct dvb_frontend *fe = data;
552 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 553 fe_status_t s;
c59e7870
MA		 554 enum dvbfe_algo algo;
555
7e072221 556 bool re_tune = false;
1da177e4 557
46b4f7c1 558 dprintk("%s\n", __func__);
1da177e4 559
36cb557a
AQ		 560 fepriv->check_wrapped = 0;
561 fepriv->quality = 0;
562 fepriv->delay = 3*HZ;
1da177e4 563 fepriv->status = 0;
1da177e4 564 fepriv->wakeup = 0;
04c56d0e
AQ		 565 fepriv->reinitialise = 0;
566
567 dvb_frontend_init(fe);
1da177e4 568
83144186 569 set_freezable();
1da177e4
LT		 570 while (1) {
571 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 572restart:
94238e9b 573 wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 574 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
575 || freezing(current),
8eec1429
HP		 576 fepriv->delay);
577
578 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4 579 /* got signal or quitting */
e36309f5 580 fepriv->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 581 break;
582 }
583
8eec1429 584 if (try_to_freeze())
6591691b 585 goto restart;
1da177e4
LT		 586
587 if (down_interruptible(&fepriv->sem))
588 break;
589
86f40cc3
AQ		 590 if (fepriv->reinitialise) {
591 dvb_frontend_init(fe);
42f4e774 592 if (fe->ops.set_tone && fepriv->tone != -1)
dea74869 593 fe->ops.set_tone(fe, fepriv->tone);
42f4e774 594 if (fe->ops.set_voltage && fepriv->voltage != -1)
dea74869 595 fe->ops.set_voltage(fe, fepriv->voltage);
86f40cc3
AQ		 596 fepriv->reinitialise = 0;
597 }
598
36cb557a 599 /* do an iteration of the tuning loop */
d772bd03 600 if (fe->ops.get_frontend_algo) {
c59e7870
MA		 601 algo = fe->ops.get_frontend_algo(fe);
602 switch (algo) {
603 case DVBFE_ALGO_HW:
604 dprintk("%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
c59e7870 605
d772bd03 606 if (fepriv->state & FESTATE_RETUNE) {
c59e7870 607 dprintk("%s: Retune requested, FESTATE_RETUNE\n", __func__);
7e072221 608 re_tune = true;
d772bd03
MA		 609 fepriv->state = FESTATE_TUNED;
610 }
611
c59e7870 612 if (fe->ops.tune)
7e072221 613 fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s);
c59e7870 614
2fac9a0f 615 if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
c59e7870 616 dprintk("%s: state changed, adding current state\n", __func__);
d772bd03
MA		 617 dvb_frontend_add_event(fe, s);
618 fepriv->status = s;
619 }
c59e7870
MA		 620 break;
621 case DVBFE_ALGO_SW:
622 dprintk("%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
70d90635 623 dvb_frontend_swzigzag(fe);
c59e7870
MA		 624 break;
625 case DVBFE_ALGO_CUSTOM:
c59e7870
MA		 626 dprintk("%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
627 if (fepriv->state & FESTATE_RETUNE) {
628 dprintk("%s: Retune requested, FESTAT_RETUNE\n", __func__);
629 fepriv->state = FESTATE_TUNED;
630 }
631 /* Case where we are going to search for a carrier
632 * User asked us to retune again for some reason, possibly
633 * requesting a search with a new set of parameters
634 */
635 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
7bcbdf38 636 if (fe->ops.search) {
41da5320 637 fepriv->algo_status = fe->ops.search(fe);
c59e7870
MA		 638 /* We did do a search as was requested, the flags are
639 * now unset as well and has the flags wrt to search.
640 */
7bcbdf38
AJ		 641 } else {
642 fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
643 }
c59e7870
MA		 644 }
645 /* Track the carrier if the search was successful */
1b5d8716 646 if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) {
7bcbdf38
AJ		 647 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
648 fepriv->delay = HZ / 2;
649 }
a5959dbe 650 fepriv->parameters_out = fepriv->parameters_in;
7bcbdf38
AJ		 651 fe->ops.read_status(fe, &s);
652 if (s != fepriv->status) {
653 dvb_frontend_add_event(fe, s); /* update event list */
654 fepriv->status = s;
655 if (!(s & FE_HAS_LOCK)) {
656 fepriv->delay = HZ / 10;
657 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
658 } else {
659 fepriv->delay = 60 * HZ;
660 }
c59e7870
MA		 661 }
662 break;
663 default:
664 dprintk("%s: UNDEFINED ALGO !\n", __func__);
665 break;
666 }
667 } else {
4a4edcca 668 dvb_frontend_swzigzag(fe);
c59e7870 669 }
1da177e4
LT		 670 }
671
608f62d6
OE		 672 if (dvb_powerdown_on_sleep) {
673 if (fe->ops.set_voltage)
674 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869 675 if (fe->ops.tuner_ops.sleep) {
41286d97
DH		 676 if (fe->ops.i2c_gate_ctrl)
677 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 678 fe->ops.tuner_ops.sleep(fe);
679 if (fe->ops.i2c_gate_ctrl)
680 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 681 }
dea74869
PB		 682 if (fe->ops.sleep)
683 fe->ops.sleep(fe);
1da177e4
LT		 684 }
685
8eec1429 686 fepriv->thread = NULL;
e36309f5
MC		 687 if (kthread_should_stop())
688 fepriv->exit = DVB_FE_DEVICE_REMOVED;
689 else
690 fepriv->exit = DVB_FE_NO_EXIT;
1da177e4
LT		 691 mb();
692
693 dvb_frontend_wakeup(fe);
694 return 0;
695}
696
697static void dvb_frontend_stop(struct dvb_frontend *fe)
698{
0c53c70f 699 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 700
46b4f7c1 701 dprintk ("%s\n", __func__);
1da177e4 702
e36309f5 703 fepriv->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 704 mb();
705
8eec1429 706 if (!fepriv->thread)
1da177e4
LT		 707 return;
708
8eec1429 709 kthread_stop(fepriv->thread);
ca5be9cd 710
a0a4714c 711 sema_init(&fepriv->sem, 1);
1da177e4
LT		 712 fepriv->state = FESTATE_IDLE;
713
714 /* paranoia check in case a signal arrived */
8eec1429
HP		 715 if (fepriv->thread)
716 printk("dvb_frontend_stop: warning: thread %p won't exit\n",
717 fepriv->thread);
1da177e4
LT		 718}
719
83b75b04
N		 720s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime)
721{
722 return ((curtime.tv_usec < lasttime.tv_usec) ?
723 1000000 - lasttime.tv_usec + curtime.tv_usec :
724 curtime.tv_usec - lasttime.tv_usec);
725}
726EXPORT_SYMBOL(timeval_usec_diff);
727
728static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec)
729{
730 curtime->tv_usec += add_usec;
731 if (curtime->tv_usec >= 1000000) {
732 curtime->tv_usec -= 1000000;
733 curtime->tv_sec++;
734 }
735}
736
737/*
738 * Sleep until gettimeofday() > waketime + add_usec
739 * This needs to be as precise as possible, but as the delay is
740 * usually between 2ms and 32ms, it is done using a scheduled msleep
741 * followed by usleep (normally a busy-wait loop) for the remainder
742 */
743void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec)
744{
745 struct timeval lasttime;
746 s32 delta, newdelta;
747
748 timeval_usec_add(waketime, add_usec);
749
750 do_gettimeofday(&lasttime);
751 delta = timeval_usec_diff(lasttime, *waketime);
752 if (delta > 2500) {
753 msleep((delta - 1500) / 1000);
754 do_gettimeofday(&lasttime);
755 newdelta = timeval_usec_diff(lasttime, *waketime);
756 delta = (newdelta > delta) ? 0 : newdelta;
757 }
758 if (delta > 0)
759 udelay(delta);
760}
761EXPORT_SYMBOL(dvb_frontend_sleep_until);
762
1da177e4
LT		 763static int dvb_frontend_start(struct dvb_frontend *fe)
764{
765 int ret;
0c53c70f 766 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 767 struct task_struct *fe_thread;
1da177e4 768
46b4f7c1 769 dprintk ("%s\n", __func__);
1da177e4 770
8eec1429 771 if (fepriv->thread) {
e36309f5 772 if (fepriv->exit == DVB_FE_NO_EXIT)
1da177e4
LT		 773 return 0;
774 else
775 dvb_frontend_stop (fe);
776 }
777
778 if (signal_pending(current))
779 return -EINTR;
780 if (down_interruptible (&fepriv->sem))
781 return -EINTR;
782
783 fepriv->state = FESTATE_IDLE;
e36309f5 784 fepriv->exit = DVB_FE_NO_EXIT;
8eec1429 785 fepriv->thread = NULL;
1da177e4
LT		 786 mb();
787
8eec1429 788 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 789 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 790 if (IS_ERR(fe_thread)) {
791 ret = PTR_ERR(fe_thread);
792 printk("dvb_frontend_start: failed to start kthread (%d)\n", ret);
1da177e4
LT		 793 up(&fepriv->sem);
794 return ret;
795 }
8eec1429 796 fepriv->thread = fe_thread;
1da177e4
LT		 797 return 0;
798}
799
2030c032 800static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
c471b331
OE		 801 u32 *freq_min, u32 *freq_max)
802{
803 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
804
805 if (fe->ops.info.frequency_max == 0)
806 *freq_max = fe->ops.tuner_ops.info.frequency_max;
807 else if (fe->ops.tuner_ops.info.frequency_max == 0)
808 *freq_max = fe->ops.info.frequency_max;
809 else
810 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
811
812 if (*freq_min == 0 || *freq_max == 0)
363c35fc
ST		 813 printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
814 fe->dvb->num,fe->id);
c471b331
OE		 815}
816
1fab46f0
OE		 817static int dvb_frontend_check_parameters(struct dvb_frontend *fe,
818 struct dvb_frontend_parameters *parms)
819{
c471b331
OE		 820 u32 freq_min;
821 u32 freq_max;
822
1fab46f0 823 /* range check: frequency */
2030c032 824 dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
c471b331
OE		 825 if ((freq_min && parms->frequency < freq_min) ||
826 (freq_max && parms->frequency > freq_max)) {
363c35fc
ST		 827 printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
828 fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max);
1fab46f0
OE		 829 return -EINVAL;
830 }
831
832 /* range check: symbol rate */
833 if (fe->ops.info.type == FE_QPSK) {
834 if ((fe->ops.info.symbol_rate_min &&
835 parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) ||
836 (fe->ops.info.symbol_rate_max &&
837 parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 838 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
839 fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate,
1fab46f0
OE		 840 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
841 return -EINVAL;
842 }
843
844 } else if (fe->ops.info.type == FE_QAM) {
845 if ((fe->ops.info.symbol_rate_min &&
846 parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) ||
847 (fe->ops.info.symbol_rate_max &&
848 parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) {
363c35fc
ST		 849 printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
850 fe->dvb->num, fe->id, parms->u.qam.symbol_rate,
1fab46f0
OE		 851 fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max);
852 return -EINVAL;
853 }
854 }
855
f51fad85
JG		 856 /* check for supported modulation */
857 if (fe->ops.info.type == FE_QAM &&
858 (parms->u.qam.modulation > QAM_AUTO ||
859 !((1 << (parms->u.qam.modulation + 10)) & fe->ops.info.caps))) {
860 printk(KERN_WARNING "DVB: adapter %i frontend %i modulation %u not supported\n",
861 fe->dvb->num, fe->id, parms->u.qam.modulation);
862 return -EINVAL;
863 }
864
1fab46f0
OE		 865 return 0;
866}
867
b6e760f3
PB		 868static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
869{
50727719 870 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
b6e760f3
PB		 871 int i;
872
50727719
AO		 873 memset(c, 0, sizeof(struct dtv_frontend_properties));
874
875 c->state = DTV_CLEAR;
876 c->delivery_system = SYS_UNDEFINED;
877 c->inversion = INVERSION_AUTO;
878 c->fec_inner = FEC_AUTO;
879 c->transmission_mode = TRANSMISSION_MODE_AUTO;
880 c->bandwidth_hz = BANDWIDTH_AUTO;
881 c->guard_interval = GUARD_INTERVAL_AUTO;
882 c->hierarchy = HIERARCHY_AUTO;
883 c->symbol_rate = QAM_AUTO;
884 c->code_rate_HP = FEC_AUTO;
885 c->code_rate_LP = FEC_AUTO;
39ce61a8 886 c->rolloff = ROLLOFF_AUTO;
50727719
AO		 887
888 c->isdbt_partial_reception = -1;
889 c->isdbt_sb_mode = -1;
890 c->isdbt_sb_subchannel = -1;
891 c->isdbt_sb_segment_idx = -1;
892 c->isdbt_sb_segment_count = -1;
893 c->isdbt_layer_enabled = 0x7;
b6e760f3 894 for (i = 0; i < 3; i++) {
50727719
AO		 895 c->layer[i].fec = FEC_AUTO;
896 c->layer[i].modulation = QAM_AUTO;
897 c->layer[i].interleaving = -1;
898 c->layer[i].segment_count = -1;
b6e760f3
PB		 899 }
900
901 return 0;
902}
903
904#define _DTV_CMD(n, s, b) \
905[n] = { \
906 .name = #n, \
907 .cmd = n, \
908 .set = s,\
909 .buffer = b \
910}
911
ec05a642 912static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
06d3a396
MCC		 913 _DTV_CMD(DTV_TUNE, 1, 0),
914 _DTV_CMD(DTV_CLEAR, 1, 0),
6b73eeaf
ST		 915
916 /* Set */
06d3a396
MCC		 917 _DTV_CMD(DTV_FREQUENCY, 1, 0),
918 _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
919 _DTV_CMD(DTV_MODULATION, 1, 0),
920 _DTV_CMD(DTV_INVERSION, 1, 0),
921 _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
922 _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
923 _DTV_CMD(DTV_INNER_FEC, 1, 0),
924 _DTV_CMD(DTV_VOLTAGE, 1, 0),
925 _DTV_CMD(DTV_TONE, 1, 0),
926 _DTV_CMD(DTV_PILOT, 1, 0),
927 _DTV_CMD(DTV_ROLLOFF, 1, 0),
928 _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
929 _DTV_CMD(DTV_HIERARCHY, 1, 0),
930 _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
931 _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
932 _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
933 _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
b6e760f3
PB		 934
935 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
936 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
937 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
938 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
939 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
e7b7949a 940 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
b6e760f3
PB		 941 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
942 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
943 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
944 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
945 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
946 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
947 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
948 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
949 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
950 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
951 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
952 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
953
954 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 0, 0),
955 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 0, 0),
956 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 0, 0),
957 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 0, 0),
958 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 0, 0),
e7b7949a 959 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 0, 0),
b6e760f3
PB		 960 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 0, 0),
961 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 0, 0),
962 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 0, 0),
963 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 0, 0),
964 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 0, 0),
965 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 0, 0),
966 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 0, 0),
967 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 0, 0),
968 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 0, 0),
969 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 0, 0),
970 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 0, 0),
971 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 0, 0),
972
98293ef3 973 _DTV_CMD(DTV_ISDBS_TS_ID, 1, 0),
ec05a642 974 _DTV_CMD(DTV_DVBT2_PLP_ID, 1, 0),
98293ef3 975
6b73eeaf 976 /* Get */
06d3a396
MCC		 977 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
978 _DTV_CMD(DTV_API_VERSION, 0, 0),
979 _DTV_CMD(DTV_CODE_RATE_HP, 0, 0),
980 _DTV_CMD(DTV_CODE_RATE_LP, 0, 0),
981 _DTV_CMD(DTV_GUARD_INTERVAL, 0, 0),
982 _DTV_CMD(DTV_TRANSMISSION_MODE, 0, 0),
983 _DTV_CMD(DTV_HIERARCHY, 0, 0),
ba2780c7
MA		 984
985 _DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
6b73eeaf
ST		 986};
987
072ce0c5 988static void dtv_property_dump(struct dtv_property *tvp)
6b73eeaf
ST		 989{
990 int i;
991
106ff9e0 992 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
a1bc84c0 993 printk(KERN_WARNING "%s: tvp.cmd = 0x%08x undefined\n",
4aae8efb
DB		 994 __func__, tvp->cmd);
995 return;
996 }
997
a1bc84c0
ST		 998 dprintk("%s() tvp.cmd = 0x%08x (%s)\n"
999 ,__func__
6b73eeaf 1000 ,tvp->cmd
56f0680a 1001 ,dtv_cmds[ tvp->cmd ].name);
6b73eeaf 1002
56f0680a 1003 if(dtv_cmds[ tvp->cmd ].buffer) {
6b73eeaf 1004
a1bc84c0
ST		 1005 dprintk("%s() tvp.u.buffer.len = 0x%02x\n"
1006 ,__func__
6b73eeaf
ST		 1007 ,tvp->u.buffer.len);
1008
1009 for(i = 0; i < tvp->u.buffer.len; i++)
a1bc84c0
ST		 1010 dprintk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n"
1011 ,__func__
6b73eeaf
ST		 1012 ,i
1013 ,tvp->u.buffer.data[i]);
1014
1015 } else
a1bc84c0 1016 dprintk("%s() tvp.u.data = 0x%08x\n", __func__, tvp->u.data);
6b73eeaf
ST		 1017}
1018
072ce0c5 1019static int is_legacy_delivery_system(fe_delivery_system_t s)
6b73eeaf 1020{
fd66c45d 1021 if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_A) ||
3fa37deb
DH		 1022 (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS) ||
1023 (s == SYS_ATSC))
6b73eeaf
ST		 1024 return 1;
1025
1026 return 0;
1027}
1028
674ce343
AO		 1029/* Initialize the cache with some default values derived from the
1030 * legacy frontend_info structure.
1031 */
1032static void dtv_property_cache_init(struct dvb_frontend *fe,
1033 struct dtv_frontend_properties *c)
1034{
1035 switch (fe->ops.info.type) {
1036 case FE_QPSK:
1037 c->modulation = QPSK; /* implied for DVB-S in legacy API */
1038 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
1039 c->delivery_system = SYS_DVBS;
1040 break;
1041 case FE_QAM:
fd66c45d 1042 c->delivery_system = SYS_DVBC_ANNEX_A;
674ce343
AO		 1043 break;
1044 case FE_OFDM:
1045 c->delivery_system = SYS_DVBT;
1046 break;
1047 case FE_ATSC:
1048 break;
1049 }
1050}
1051
ee33c525
ST		 1052/* Synchronise the legacy tuning parameters into the cache, so that demodulator
1053 * drivers can use a single set_frontend tuning function, regardless of whether
1054 * it's being used for the legacy or new API, reducing code and complexity.
1055 */
072ce0c5 1056static void dtv_property_cache_sync(struct dvb_frontend *fe,
bbe880b4
AO		 1057 struct dtv_frontend_properties *c,
1058 const struct dvb_frontend_parameters *p)
ee33c525 1059{
ee33c525
ST		 1060 c->frequency = p->frequency;
1061 c->inversion = p->inversion;
1062
1063 switch (fe->ops.info.type) {
1064 case FE_QPSK:
1065 c->symbol_rate = p->u.qpsk.symbol_rate;
1066 c->fec_inner = p->u.qpsk.fec_inner;
1067 break;
1068 case FE_QAM:
1069 c->symbol_rate = p->u.qam.symbol_rate;
1070 c->fec_inner = p->u.qam.fec_inner;
1071 c->modulation = p->u.qam.modulation;
1072 break;
1073 case FE_OFDM:
75b7f943
ST		 1074 if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ)
1075 c->bandwidth_hz = 6000000;
1076 else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ)
1077 c->bandwidth_hz = 7000000;
1078 else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ)
1079 c->bandwidth_hz = 8000000;
1080 else
1081 /* Including BANDWIDTH_AUTO */
1082 c->bandwidth_hz = 0;
ee33c525
ST		 1083 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1084 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1085 c->modulation = p->u.ofdm.constellation;
1086 c->transmission_mode = p->u.ofdm.transmission_mode;
1087 c->guard_interval = p->u.ofdm.guard_interval;
1088 c->hierarchy = p->u.ofdm.hierarchy_information;
1089 break;
1090 case FE_ATSC:
1091 c->modulation = p->u.vsb.modulation;
80a773c9
ST		 1092 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1093 c->delivery_system = SYS_ATSC;
1094 else
1095 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525
ST		 1096 break;
1097 }
1098}
1099
d5748f10
ST		 1100/* Ensure the cached values are set correctly in the frontend
1101 * legacy tuning structures, for the advanced tuning API.
1102 */
a689e365
MCC		 1103static void dtv_property_legacy_params_sync(struct dvb_frontend *fe,
1104 struct dvb_frontend_parameters *p)
6b73eeaf 1105{
15cc2bb3 1106 const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1107
d5748f10
ST		 1108 p->frequency = c->frequency;
1109 p->inversion = c->inversion;
6b73eeaf 1110
d5748f10
ST		 1111 switch (fe->ops.info.type) {
1112 case FE_QPSK:
a1bc84c0 1113 dprintk("%s() Preparing QPSK req\n", __func__);
d5748f10
ST		 1114 p->u.qpsk.symbol_rate = c->symbol_rate;
1115 p->u.qpsk.fec_inner = c->fec_inner;
1116 break;
1117 case FE_QAM:
a1bc84c0 1118 dprintk("%s() Preparing QAM req\n", __func__);
d5748f10
ST		 1119 p->u.qam.symbol_rate = c->symbol_rate;
1120 p->u.qam.fec_inner = c->fec_inner;
1121 p->u.qam.modulation = c->modulation;
1122 break;
1123 case FE_OFDM:
a1bc84c0 1124 dprintk("%s() Preparing OFDM req\n", __func__);
75b7f943
ST		 1125 if (c->bandwidth_hz == 6000000)
1126 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1127 else if (c->bandwidth_hz == 7000000)
1128 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1129 else if (c->bandwidth_hz == 8000000)
1130 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
1131 else
1132 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10
ST		 1133 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1134 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1135 p->u.ofdm.constellation = c->modulation;
1136 p->u.ofdm.transmission_mode = c->transmission_mode;
1137 p->u.ofdm.guard_interval = c->guard_interval;
1138 p->u.ofdm.hierarchy_information = c->hierarchy;
1139 break;
1140 case FE_ATSC:
a1bc84c0 1141 dprintk("%s() Preparing VSB req\n", __func__);
d5748f10
ST		 1142 p->u.vsb.modulation = c->modulation;
1143 break;
1144 }
1145}
1146
1147/* Ensure the cached values are set correctly in the frontend
1148 * legacy tuning structures, for the legacy tuning API.
1149 */
072ce0c5 1150static void dtv_property_adv_params_sync(struct dvb_frontend *fe)
d5748f10 1151{
fd66c45d 1152 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1153 struct dvb_frontend_private *fepriv = fe->frontend_priv;
61cb27af 1154 struct dvb_frontend_parameters *p = &fepriv->parameters_in;
fd66c45d 1155 u32 rolloff = 0;
6b73eeaf 1156
d5748f10
ST		 1157 p->frequency = c->frequency;
1158 p->inversion = c->inversion;
1159
14f55794
AO		 1160 if (c->delivery_system == SYS_DSS ||
1161 c->delivery_system == SYS_DVBS ||
1162 c->delivery_system == SYS_DVBS2 ||
1163 c->delivery_system == SYS_ISDBS ||
1164 c->delivery_system == SYS_TURBO) {
d5748f10
ST		 1165 p->u.qpsk.symbol_rate = c->symbol_rate;
1166 p->u.qpsk.fec_inner = c->fec_inner;
d5748f10
ST		 1167 }
1168
94d56ffa
AO		 1169 /* Fake out a generic DVB-T request so we pass validation in the ioctl */
1170 if ((c->delivery_system == SYS_ISDBT) ||
1171 (c->delivery_system == SYS_DVBT2)) {
d5748f10
ST		 1172 p->u.ofdm.constellation = QAM_AUTO;
1173 p->u.ofdm.code_rate_HP = FEC_AUTO;
1174 p->u.ofdm.code_rate_LP = FEC_AUTO;
d5748f10
ST		 1175 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO;
1176 p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO;
1177 p->u.ofdm.hierarchy_information = HIERARCHY_AUTO;
b6e760f3
PB		 1178 if (c->bandwidth_hz == 8000000)
1179 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
1180 else if (c->bandwidth_hz == 7000000)
1181 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1182 else if (c->bandwidth_hz == 6000000)
1183 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1184 else
1185 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
d5748f10 1186 }
fd66c45d
MCC		 1187
1188 /*
0607d077
MCC		 1189 * Be sure that the bandwidth will be filled for all
1190 * non-satellite systems, as tuners need to know what
1191 * low pass/Nyquist half filter should be applied, in
1192 * order to avoid inter-channel noise.
1193 *
1194 * ISDB-T and DVB-T/T2 already sets bandwidth.
1195 * ATSC and DVB-C don't set, so, the core should fill it.
1196 *
1197 * On DVB-C Annex A and C, the bandwidth is a function of
1198 * the roll-off and symbol rate. Annex B defines different
1199 * roll-off factors depending on the modulation. Fortunately,
1200 * Annex B is only used with 6MHz, so there's no need to
1201 * calculate it.
1202 *
fd66c45d
MCC		 1203 * While not officially supported, a side effect of handling it at
1204 * the cache level is that a program could retrieve the bandwidth
0607d077 1205 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
fd66c45d 1206 */
0607d077
MCC		 1207 switch (c->delivery_system) {
1208 case SYS_ATSC:
1209 case SYS_DVBC_ANNEX_B:
1210 c->bandwidth_hz = 6000000;
1211 break;
1212 case SYS_DVBC_ANNEX_A:
fd66c45d 1213 rolloff = 115;
0607d077
MCC		 1214 break;
1215 case SYS_DVBC_ANNEX_C:
fd66c45d 1216 rolloff = 113;
0607d077
MCC		 1217 break;
1218 default:
1219 break;
1220 }
fd66c45d
MCC		 1221 if (rolloff)
1222 c->bandwidth_hz = (c->symbol_rate * rolloff) / 100;
d5748f10
ST		 1223}
1224
072ce0c5 1225static void dtv_property_cache_submit(struct dvb_frontend *fe)
d5748f10 1226{
15cc2bb3 1227 const struct dtv_frontend_properties *c = &fe->dtv_property_cache;
a689e365 1228 struct dvb_frontend_private *fepriv = fe->frontend_priv;
d5748f10 1229
d5748f10
ST		 1230 /* For legacy delivery systems we don't need the delivery_system to
1231 * be specified, but we populate the older structures from the cache
1232 * so we can call set_frontend on older drivers.
1233 */
6b73eeaf 1234 if(is_legacy_delivery_system(c->delivery_system)) {
6b73eeaf 1235
a1bc84c0 1236 dprintk("%s() legacy, modulation = %d\n", __func__, c->modulation);
a689e365 1237 dtv_property_legacy_params_sync(fe, &fepriv->parameters_in);
6b73eeaf 1238
6b73eeaf 1239 } else {
a1bc84c0 1240 dprintk("%s() adv, modulation = %d\n", __func__, c->modulation);
d5748f10 1241
6b73eeaf
ST		 1242 /* For advanced delivery systems / modulation types ...
1243 * we seed the lecacy dvb_frontend_parameters structure
1244 * so that the sanity checking code later in the IOCTL processing
1245 * can validate our basic frequency ranges, symbolrates, modulation
1246 * etc.
1247 */
d5748f10 1248 dtv_property_adv_params_sync(fe);
6b73eeaf 1249 }
6b73eeaf
ST		 1250}
1251
a689e365
MCC		 1252/**
1253 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1254 * @fe: struct dvb_frontend pointer
1255 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1256 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1257 *
1258 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1259 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1260 * If p_out is not null, it will update the DVBv3 params pointed by it.
1261 */
1262static int dtv_get_frontend(struct dvb_frontend *fe,
a689e365
MCC		 1263 struct dvb_frontend_parameters *p_out)
1264{
a689e365
MCC		 1265 int r;
1266
a689e365 1267 if (fe->ops.get_frontend) {
7c61d80a 1268 r = fe->ops.get_frontend(fe);
a689e365
MCC		 1269 if (unlikely(r < 0))
1270 return r;
7c61d80a 1271 if (p_out)
a689e365
MCC		 1272 dtv_property_legacy_params_sync(fe, p_out);
1273 return 0;
1274 }
1275
7c61d80a 1276 /* As everything is in cache, get_frontend fops are always supported */
b1e9a650 1277 return 0;
a689e365
MCC		 1278}
1279
16ef8def 1280static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5 1281 unsigned int cmd, void *parg);
16ef8def 1282static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1283 unsigned int cmd, void *parg);
1284
ba2780c7
MA		 1285static void dtv_set_default_delivery_caps(const struct dvb_frontend *fe, struct dtv_property *p)
1286{
1287 const struct dvb_frontend_info *info = &fe->ops.info;
1288 u32 ncaps = 0;
1289
eeacf147
MCC		 1290 /*
1291 * If the frontend explicitly sets a list, use it, instead of
1292 * filling based on the info->type
1293 */
1294 if (fe->ops.delsys[ncaps]) {
1295 while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) {
1296 p->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
1297 ncaps++;
1298 }
1299 p->u.buffer.len = ncaps;
1300 return;
1301 }
ba2780c7
MA		 1302 switch (info->type) {
1303 case FE_QPSK:
1304 p->u.buffer.data[ncaps++] = SYS_DVBS;
1305 if (info->caps & FE_CAN_2G_MODULATION)
1306 p->u.buffer.data[ncaps++] = SYS_DVBS2;
1307 if (info->caps & FE_CAN_TURBO_FEC)
1308 p->u.buffer.data[ncaps++] = SYS_TURBO;
1309 break;
1310 case FE_QAM:
0349471b 1311 p->u.buffer.data[ncaps++] = SYS_DVBC_ANNEX_A;
ba2780c7
MA		 1312 break;
1313 case FE_OFDM:
1314 p->u.buffer.data[ncaps++] = SYS_DVBT;
1315 if (info->caps & FE_CAN_2G_MODULATION)
1316 p->u.buffer.data[ncaps++] = SYS_DVBT2;
1317 break;
1318 case FE_ATSC:
1319 if (info->caps & (FE_CAN_8VSB | FE_CAN_16VSB))
1320 p->u.buffer.data[ncaps++] = SYS_ATSC;
1321 if (info->caps & (FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_128 | FE_CAN_QAM_256))
1322 p->u.buffer.data[ncaps++] = SYS_DVBC_ANNEX_B;
1323 break;
1324 }
1325 p->u.buffer.len = ncaps;
1326}
1327
072ce0c5 1328static int dtv_property_process_get(struct dvb_frontend *fe,
a689e365 1329 const struct dtv_frontend_properties *c,
072ce0c5 1330 struct dtv_property *tvp,
16ef8def 1331 struct file *file)
363429a0 1332{
e23d9ae3 1333 int r;
bfbf2dae 1334
363429a0 1335 switch(tvp->cmd) {
ba2780c7
MA		 1336 case DTV_ENUM_DELSYS:
1337 dtv_set_default_delivery_caps(fe, tvp);
1338 break;
363429a0 1339 case DTV_FREQUENCY:
50727719 1340 tvp->u.data = c->frequency;
363429a0
ST		 1341 break;
1342 case DTV_MODULATION:
50727719 1343 tvp->u.data = c->modulation;
363429a0 1344 break;
75b7f943 1345 case DTV_BANDWIDTH_HZ:
50727719 1346 tvp->u.data = c->bandwidth_hz;
363429a0
ST		 1347 break;
1348 case DTV_INVERSION:
50727719 1349 tvp->u.data = c->inversion;
363429a0
ST		 1350 break;
1351 case DTV_SYMBOL_RATE:
50727719 1352 tvp->u.data = c->symbol_rate;
363429a0
ST		 1353 break;
1354 case DTV_INNER_FEC:
50727719 1355 tvp->u.data = c->fec_inner;
363429a0
ST		 1356 break;
1357 case DTV_PILOT:
50727719 1358 tvp->u.data = c->pilot;
363429a0
ST		 1359 break;
1360 case DTV_ROLLOFF:
50727719 1361 tvp->u.data = c->rolloff;
363429a0
ST		 1362 break;
1363 case DTV_DELIVERY_SYSTEM:
50727719 1364 tvp->u.data = c->delivery_system;
363429a0 1365 break;
363429a0 1366 case DTV_VOLTAGE:
50727719 1367 tvp->u.data = c->voltage;
363429a0
ST		 1368 break;
1369 case DTV_TONE:
50727719 1370 tvp->u.data = c->sectone;
363429a0 1371 break;
eacf8d8d
ST		 1372 case DTV_API_VERSION:
1373 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1374 break;
a4de91be 1375 case DTV_CODE_RATE_HP:
50727719 1376 tvp->u.data = c->code_rate_HP;
a4de91be
ST		 1377 break;
1378 case DTV_CODE_RATE_LP:
50727719 1379 tvp->u.data = c->code_rate_LP;
a4de91be 1380 break;
b87625f0 1381 case DTV_GUARD_INTERVAL:
50727719 1382 tvp->u.data = c->guard_interval;
b87625f0
ST		 1383 break;
1384 case DTV_TRANSMISSION_MODE:
50727719 1385 tvp->u.data = c->transmission_mode;
b87625f0 1386 break;
ef526f42 1387 case DTV_HIERARCHY:
50727719 1388 tvp->u.data = c->hierarchy;
ef526f42 1389 break;
b6e760f3
PB		 1390
1391 /* ISDB-T Support here */
1392 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1393 tvp->u.data = c->isdbt_partial_reception;
b6e760f3
PB		 1394 break;
1395 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1396 tvp->u.data = c->isdbt_sb_mode;
b6e760f3
PB		 1397 break;
1398 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1399 tvp->u.data = c->isdbt_sb_subchannel;
b6e760f3
PB		 1400 break;
1401 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1402 tvp->u.data = c->isdbt_sb_segment_idx;
b6e760f3
PB		 1403 break;
1404 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1405 tvp->u.data = c->isdbt_sb_segment_count;
b6e760f3 1406 break;
e7b7949a 1407 case DTV_ISDBT_LAYER_ENABLED:
50727719 1408 tvp->u.data = c->isdbt_layer_enabled;
e7b7949a 1409 break;
b6e760f3 1410 case DTV_ISDBT_LAYERA_FEC:
50727719 1411 tvp->u.data = c->layer[0].fec;
b6e760f3
PB		 1412 break;
1413 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1414 tvp->u.data = c->layer[0].modulation;
b6e760f3
PB		 1415 break;
1416 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1417 tvp->u.data = c->layer[0].segment_count;
b6e760f3
PB		 1418 break;
1419 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1420 tvp->u.data = c->layer[0].interleaving;
b6e760f3
PB		 1421 break;
1422 case DTV_ISDBT_LAYERB_FEC:
50727719 1423 tvp->u.data = c->layer[1].fec;
b6e760f3
PB		 1424 break;
1425 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1426 tvp->u.data = c->layer[1].modulation;
b6e760f3
PB		 1427 break;
1428 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1429 tvp->u.data = c->layer[1].segment_count;
b6e760f3
PB		 1430 break;
1431 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1432 tvp->u.data = c->layer[1].interleaving;
b6e760f3
PB		 1433 break;
1434 case DTV_ISDBT_LAYERC_FEC:
50727719 1435 tvp->u.data = c->layer[2].fec;
b6e760f3
PB		 1436 break;
1437 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1438 tvp->u.data = c->layer[2].modulation;
b6e760f3
PB		 1439 break;
1440 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1441 tvp->u.data = c->layer[2].segment_count;
b6e760f3
PB		 1442 break;
1443 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1444 tvp->u.data = c->layer[2].interleaving;
b6e760f3 1445 break;
98293ef3 1446 case DTV_ISDBS_TS_ID:
50727719 1447 tvp->u.data = c->isdbs_ts_id;
98293ef3 1448 break;
94d56ffa 1449 case DTV_DVBT2_PLP_ID:
50727719 1450 tvp->u.data = c->dvbt2_plp_id;
94d56ffa 1451 break;
363429a0 1452 default:
aff8ab5c 1453 return -EINVAL;
363429a0
ST		 1454 }
1455
e23d9ae3
AO		 1456 /* Allow the frontend to override outgoing properties */
1457 if (fe->ops.get_property) {
1458 r = fe->ops.get_property(fe, tvp);
1459 if (r < 0)
1460 return r;
1461 }
1462
639544d7
MCC		 1463 dtv_property_dump(tvp);
1464
aff8ab5c 1465 return 0;
363429a0
ST		 1466}
1467
072ce0c5
MCC		 1468static int dtv_property_process_set(struct dvb_frontend *fe,
1469 struct dtv_property *tvp,
072ce0c5 1470 struct file *file)
6b73eeaf
ST		 1471{
1472 int r = 0;
50727719 1473 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
13c97bf5 1474 struct dvb_frontend_private *fepriv = fe->frontend_priv;
56f0680a 1475 dtv_property_dump(tvp);
6b73eeaf 1476
bfbf2dae 1477 /* Allow the frontend to validate incoming properties */
aff8ab5c 1478 if (fe->ops.set_property) {
bfbf2dae 1479 r = fe->ops.set_property(fe, tvp);
aff8ab5c
AO		 1480 if (r < 0)
1481 return r;
1482 }
bfbf2dae 1483
6b73eeaf 1484 switch(tvp->cmd) {
e7fee0f3 1485 case DTV_CLEAR:
6b73eeaf
ST		 1486 /* Reset a cache of data specific to the frontend here. This does
1487 * not effect hardware.
1488 */
b6e760f3 1489 dvb_frontend_clear_cache(fe);
a1bc84c0 1490 dprintk("%s() Flushing property cache\n", __func__);
6b73eeaf 1491 break;
e7fee0f3 1492 case DTV_TUNE:
6b73eeaf 1493 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1494 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1495 * ioctl.
6b73eeaf 1496 */
50727719 1497 c->state = tvp->cmd;
a1bc84c0 1498 dprintk("%s() Finalised property cache\n", __func__);
d5748f10
ST		 1499 dtv_property_cache_submit(fe);
1500
aff8ab5c 1501 r = dvb_frontend_ioctl_legacy(file, FE_SET_FRONTEND,
61cb27af 1502 &fepriv->parameters_in);
6b73eeaf 1503 break;
363429a0 1504 case DTV_FREQUENCY:
50727719 1505 c->frequency = tvp->u.data;
6b73eeaf 1506 break;
363429a0 1507 case DTV_MODULATION:
50727719 1508 c->modulation = tvp->u.data;
6b73eeaf 1509 break;
75b7f943 1510 case DTV_BANDWIDTH_HZ:
50727719 1511 c->bandwidth_hz = tvp->u.data;
6b73eeaf 1512 break;
363429a0 1513 case DTV_INVERSION:
50727719 1514 c->inversion = tvp->u.data;
6b73eeaf 1515 break;
363429a0 1516 case DTV_SYMBOL_RATE:
50727719 1517 c->symbol_rate = tvp->u.data;
6b73eeaf 1518 break;
363429a0 1519 case DTV_INNER_FEC:
50727719 1520 c->fec_inner = tvp->u.data;
6b73eeaf 1521 break;
363429a0 1522 case DTV_PILOT:
50727719 1523 c->pilot = tvp->u.data;
6b73eeaf 1524 break;
363429a0 1525 case DTV_ROLLOFF:
50727719 1526 c->rolloff = tvp->u.data;
6b73eeaf 1527 break;
363429a0 1528 case DTV_DELIVERY_SYSTEM:
50727719 1529 c->delivery_system = tvp->u.data;
6b73eeaf 1530 break;
363429a0 1531 case DTV_VOLTAGE:
50727719 1532 c->voltage = tvp->u.data;
16ef8def 1533 r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
50727719 1534 (void *)c->voltage);
13c97bf5 1535 break;
363429a0 1536 case DTV_TONE:
50727719 1537 c->sectone = tvp->u.data;
16ef8def 1538 r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
50727719 1539 (void *)c->sectone);
13c97bf5 1540 break;
a4de91be 1541 case DTV_CODE_RATE_HP:
50727719 1542 c->code_rate_HP = tvp->u.data;
a4de91be
ST		 1543 break;
1544 case DTV_CODE_RATE_LP:
50727719 1545 c->code_rate_LP = tvp->u.data;
a4de91be 1546 break;
b87625f0 1547 case DTV_GUARD_INTERVAL:
50727719 1548 c->guard_interval = tvp->u.data;
b87625f0
ST		 1549 break;
1550 case DTV_TRANSMISSION_MODE:
50727719 1551 c->transmission_mode = tvp->u.data;
b87625f0 1552 break;
ef526f42 1553 case DTV_HIERARCHY:
50727719 1554 c->hierarchy = tvp->u.data;
ef526f42 1555 break;
b6e760f3
PB		 1556
1557 /* ISDB-T Support here */
1558 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1559 c->isdbt_partial_reception = tvp->u.data;
b6e760f3
PB		 1560 break;
1561 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1562 c->isdbt_sb_mode = tvp->u.data;
b6e760f3
PB		 1563 break;
1564 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1565 c->isdbt_sb_subchannel = tvp->u.data;
b6e760f3
PB		 1566 break;
1567 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1568 c->isdbt_sb_segment_idx = tvp->u.data;
b6e760f3
PB		 1569 break;
1570 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1571 c->isdbt_sb_segment_count = tvp->u.data;
b6e760f3 1572 break;
e7b7949a 1573 case DTV_ISDBT_LAYER_ENABLED:
50727719 1574 c->isdbt_layer_enabled = tvp->u.data;
e7b7949a 1575 break;
b6e760f3 1576 case DTV_ISDBT_LAYERA_FEC:
50727719 1577 c->layer[0].fec = tvp->u.data;
b6e760f3
PB		 1578 break;
1579 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1580 c->layer[0].modulation = tvp->u.data;
b6e760f3
PB		 1581 break;
1582 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1583 c->layer[0].segment_count = tvp->u.data;
b6e760f3
PB		 1584 break;
1585 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1586 c->layer[0].interleaving = tvp->u.data;
b6e760f3
PB		 1587 break;
1588 case DTV_ISDBT_LAYERB_FEC:
50727719 1589 c->layer[1].fec = tvp->u.data;
b6e760f3
PB		 1590 break;
1591 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1592 c->layer[1].modulation = tvp->u.data;
b6e760f3
PB		 1593 break;
1594 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1595 c->layer[1].segment_count = tvp->u.data;
b6e760f3
PB		 1596 break;
1597 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1598 c->layer[1].interleaving = tvp->u.data;
b6e760f3
PB		 1599 break;
1600 case DTV_ISDBT_LAYERC_FEC:
50727719 1601 c->layer[2].fec = tvp->u.data;
b6e760f3
PB		 1602 break;
1603 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1604 c->layer[2].modulation = tvp->u.data;
b6e760f3
PB		 1605 break;
1606 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1607 c->layer[2].segment_count = tvp->u.data;
b6e760f3
PB		 1608 break;
1609 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1610 c->layer[2].interleaving = tvp->u.data;
b6e760f3 1611 break;
98293ef3 1612 case DTV_ISDBS_TS_ID:
50727719 1613 c->isdbs_ts_id = tvp->u.data;
94d56ffa
AO		 1614 break;
1615 case DTV_DVBT2_PLP_ID:
50727719 1616 c->dvbt2_plp_id = tvp->u.data;
98293ef3 1617 break;
363429a0 1618 default:
aff8ab5c 1619 return -EINVAL;
6b73eeaf
ST		 1620 }
1621
13c97bf5 1622 return r;
6b73eeaf
ST		 1623}
1624
16ef8def 1625static int dvb_frontend_ioctl(struct file *file,
1da177e4
LT		 1626 unsigned int cmd, void *parg)
1627{
1628 struct dvb_device *dvbdev = file->private_data;
1629 struct dvb_frontend *fe = dvbdev->priv;
50727719 1630 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 1631 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 1632 int err = -EOPNOTSUPP;
1633
fb8253ba 1634 dprintk("%s (%d)\n", __func__, _IOC_NR(cmd));
1da177e4 1635
e36309f5 1636 if (fepriv->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 1637 return -ENODEV;
1638
1639 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
1640 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
1641 cmd == FE_DISEQC_RECV_SLAVE_REPLY))
1642 return -EPERM;
1643
1644 if (down_interruptible (&fepriv->sem))
1645 return -ERESTARTSYS;
1646
13c97bf5 1647 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
16ef8def 1648 err = dvb_frontend_ioctl_properties(file, cmd, parg);
4dd88bec 1649 else {
50727719 1650 c->state = DTV_UNDEFINED;
16ef8def 1651 err = dvb_frontend_ioctl_legacy(file, cmd, parg);
4dd88bec 1652 }
13c97bf5
ST		 1653
1654 up(&fepriv->sem);
1655 return err;
1656}
1657
16ef8def 1658static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1659 unsigned int cmd, void *parg)
1660{
1661 struct dvb_device *dvbdev = file->private_data;
1662 struct dvb_frontend *fe = dvbdev->priv;
50727719 1663 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
e6f9ec86 1664 int err = 0;
e7fee0f3
ST		 1665
1666 struct dtv_properties *tvps = NULL;
1667 struct dtv_property *tvp = NULL;
1668 int i;
13c97bf5
ST		 1669
1670 dprintk("%s\n", __func__);
1671
6b73eeaf 1672 if(cmd == FE_SET_PROPERTY) {
e7fee0f3 1673 tvps = (struct dtv_properties __user *)parg;
6b73eeaf 1674
a1bc84c0
ST		 1675 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1676 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 1677
1678 /* Put an arbitrary limit on the number of messages that can
1679 * be sent at once */
6068f506 1680 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 1681 return -EINVAL;
1682
6e3924aa 1683 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
e7fee0f3
ST		 1684 if (!tvp) {
1685 err = -ENOMEM;
1686 goto out;
6b73eeaf
ST		 1687 }
1688
e7fee0f3
ST		 1689 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1690 err = -EFAULT;
1691 goto out;
1692 }
1693
d48cb402 1694 for (i = 0; i < tvps->num; i++) {
aff8ab5c
AO		 1695 err = dtv_property_process_set(fe, tvp + i, file);
1696 if (err < 0)
1697 goto out;
1698 (tvp + i)->result = err;
d48cb402 1699 }
e7fee0f3 1700
50727719 1701 if (c->state == DTV_TUNE)
a1bc84c0 1702 dprintk("%s() Property cache is full, tuning\n", __func__);
bfbf2dae 1703
363429a0
ST		 1704 } else
1705 if(cmd == FE_GET_PROPERTY) {
363429a0
ST		 1706 tvps = (struct dtv_properties __user *)parg;
1707
a1bc84c0
ST		 1708 dprintk("%s() properties.num = %d\n", __func__, tvps->num);
1709 dprintk("%s() properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 1710
1711 /* Put an arbitrary limit on the number of messages that can
1712 * be sent at once */
6068f506 1713 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 1714 return -EINVAL;
1715
6e3924aa 1716 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
363429a0
ST		 1717 if (!tvp) {
1718 err = -ENOMEM;
1719 goto out;
1720 }
1721
1722 if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) {
1723 err = -EFAULT;
1724 goto out;
1725 }
1726
a689e365
MCC		 1727 /*
1728 * Fills the cache out struct with the cache contents, plus
b1e9a650 1729 * the data retrieved from get_frontend.
a689e365 1730 */
7c61d80a 1731 dtv_get_frontend(fe, NULL);
d48cb402 1732 for (i = 0; i < tvps->num; i++) {
7c61d80a 1733 err = dtv_property_process_get(fe, c, tvp + i, file);
aff8ab5c
AO		 1734 if (err < 0)
1735 goto out;
1736 (tvp + i)->result = err;
d48cb402 1737 }
363429a0
ST		 1738
1739 if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) {
1740 err = -EFAULT;
1741 goto out;
1742 }
1743
363429a0
ST		 1744 } else
1745 err = -EOPNOTSUPP;
1746
e7fee0f3
ST		 1747out:
1748 kfree(tvp);
13c97bf5
ST		 1749 return err;
1750}
1751
16ef8def 1752static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5
ST		 1753 unsigned int cmd, void *parg)
1754{
1755 struct dvb_device *dvbdev = file->private_data;
1756 struct dvb_frontend *fe = dvbdev->priv;
1757 struct dvb_frontend_private *fepriv = fe->frontend_priv;
9133aee0
MK		 1758 int cb_err, err = -EOPNOTSUPP;
1759
1760 if (fe->dvb->fe_ioctl_override) {
1761 cb_err = fe->dvb->fe_ioctl_override(fe, cmd, parg,
1762 DVB_FE_IOCTL_PRE);
1763 if (cb_err < 0)
1764 return cb_err;
1765 if (cb_err > 0)
1766 return 0;
1767 /* fe_ioctl_override returning 0 allows
1768 * dvb-core to continue handling the ioctl */
1769 }
13c97bf5 1770
1da177e4
LT		 1771 switch (cmd) {
1772 case FE_GET_INFO: {
0c53c70f 1773 struct dvb_frontend_info* info = parg;
dea74869 1774 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
2030c032 1775 dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4
LT		 1776
1777 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
1778 * do it, it is done for it. */
1779 info->caps |= FE_CAN_INVERSION_AUTO;
1780 err = 0;
1781 break;
1782 }
1783
6757ccc5
PB		 1784 case FE_READ_STATUS: {
1785 fe_status_t* status = parg;
1786
25985edc 1787 /* if retune was requested but hasn't occurred yet, prevent
6757ccc5 1788 * that user get signal state from previous tuning */
01886255
JG		 1789 if (fepriv->state == FESTATE_RETUNE ||
1790 fepriv->state == FESTATE_ERROR) {
6757ccc5
PB		 1791 err=0;
1792 *status = 0;
1793 break;
1794 }
1795
dea74869
PB		 1796 if (fe->ops.read_status)
1797 err = fe->ops.read_status(fe, status);
1da177e4 1798 break;
6757ccc5 1799 }
1da177e4 1800 case FE_READ_BER:
dea74869
PB		 1801 if (fe->ops.read_ber)
1802 err = fe->ops.read_ber(fe, (__u32*) parg);
1da177e4
LT		 1803 break;
1804
1805 case FE_READ_SIGNAL_STRENGTH:
dea74869
PB		 1806 if (fe->ops.read_signal_strength)
1807 err = fe->ops.read_signal_strength(fe, (__u16*) parg);
1da177e4
LT		 1808 break;
1809
1810 case FE_READ_SNR:
dea74869
PB		 1811 if (fe->ops.read_snr)
1812 err = fe->ops.read_snr(fe, (__u16*) parg);
1da177e4
LT		 1813 break;
1814
1815 case FE_READ_UNCORRECTED_BLOCKS:
dea74869
PB		 1816 if (fe->ops.read_ucblocks)
1817 err = fe->ops.read_ucblocks(fe, (__u32*) parg);
1da177e4
LT		 1818 break;
1819
1820
1821 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 1822 if (fe->ops.diseqc_reset_overload) {
1823 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 1824 fepriv->state = FESTATE_DISEQC;
1825 fepriv->status = 0;
1826 }
1827 break;
1828
1829 case FE_DISEQC_SEND_MASTER_CMD:
dea74869
PB		 1830 if (fe->ops.diseqc_send_master_cmd) {
1831 err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg);
1da177e4
LT		 1832 fepriv->state = FESTATE_DISEQC;
1833 fepriv->status = 0;
1834 }
1835 break;
1836
1837 case FE_DISEQC_SEND_BURST:
dea74869
PB		 1838 if (fe->ops.diseqc_send_burst) {
1839 err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg);
1da177e4
LT		 1840 fepriv->state = FESTATE_DISEQC;
1841 fepriv->status = 0;
1842 }
1843 break;
1844
1845 case FE_SET_TONE:
dea74869
PB		 1846 if (fe->ops.set_tone) {
1847 err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg);
64454016 1848 fepriv->tone = (fe_sec_tone_mode_t) parg;
1da177e4
LT		 1849 fepriv->state = FESTATE_DISEQC;
1850 fepriv->status = 0;
1851 }
1852 break;
1853
1854 case FE_SET_VOLTAGE:
dea74869
PB		 1855 if (fe->ops.set_voltage) {
1856 err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg);
64454016 1857 fepriv->voltage = (fe_sec_voltage_t) parg;
1da177e4
LT		 1858 fepriv->state = FESTATE_DISEQC;
1859 fepriv->status = 0;
1860 }
1861 break;
1862
1863 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869
PB		 1864 if (fe->ops.dishnetwork_send_legacy_command) {
1865 err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg);
1da177e4
LT		 1866 fepriv->state = FESTATE_DISEQC;
1867 fepriv->status = 0;
dea74869 1868 } else if (fe->ops.set_voltage) {
83b75b04
N		 1869 /*
1870 * NOTE: This is a fallback condition. Some frontends
1871 * (stv0299 for instance) take longer than 8msec to
1872 * respond to a set_voltage command. Those switches
1873 * need custom routines to switch properly. For all
2030c032 1874 * other frontends, the following should work ok.
83b75b04
N		 1875 * Dish network legacy switches (as used by Dish500)
1876 * are controlled by sending 9-bit command words
1877 * spaced 8msec apart.
25985edc 1878 * the actual command word is switch/port dependent
83b75b04
N		 1879 * so it is up to the userspace application to send
1880 * the right command.
1881 * The command must always start with a '0' after
1882 * initialization, so parg is 8 bits and does not
1883 * include the initialization or start bit
1884 */
c6eb8eaf 1885 unsigned long swcmd = ((unsigned long) parg) << 1;
83b75b04
N		 1886 struct timeval nexttime;
1887 struct timeval tv[10];
1888 int i;
1889 u8 last = 1;
1890 if (dvb_frontend_debug)
c6eb8eaf 1891 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
83b75b04
N		 1892 do_gettimeofday(&nexttime);
1893 if (dvb_frontend_debug)
1894 memcpy(&tv[0], &nexttime, sizeof(struct timeval));
1895 /* before sending a command, initialize by sending
1896 * a 32ms 18V to the switch
1897 */
dea74869 1898 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 1899 dvb_frontend_sleep_until(&nexttime, 32000);
1900
1901 for (i = 0; i < 9; i++) {
1902 if (dvb_frontend_debug)
1903 do_gettimeofday(&tv[i + 1]);
c6eb8eaf 1904 if ((swcmd & 0x01) != last) {
83b75b04 1905 /* set voltage to (last ? 13V : 18V) */
dea74869 1906 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 1907 last = (last) ? 0 : 1;
1908 }
c6eb8eaf 1909 swcmd = swcmd >> 1;
83b75b04
N		 1910 if (i != 8)
1911 dvb_frontend_sleep_until(&nexttime, 8000);
1912 }
1913 if (dvb_frontend_debug) {
1914 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 1915 __func__, fe->dvb->num);
83b75b04
N		 1916 for (i = 1; i < 10; i++)
1917 printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
1918 }
1919 err = 0;
1920 fepriv->state = FESTATE_DISEQC;
1921 fepriv->status = 0;
1da177e4
LT		 1922 }
1923 break;
1924
1925 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 1926 if (fe->ops.diseqc_recv_slave_reply)
1927 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 1928 break;
1929
1930 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 1931 if (fe->ops.enable_high_lnb_voltage)
1932 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 1933 break;
1934
1935 case FE_SET_FRONTEND: {
50727719 1936 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1da177e4
LT		 1937 struct dvb_frontend_tune_settings fetunesettings;
1938
50727719 1939 if (c->state == DTV_TUNE) {
61cb27af 1940 if (dvb_frontend_check_parameters(fe, &fepriv->parameters_in) < 0) {
6b73eeaf
ST		 1941 err = -EINVAL;
1942 break;
1943 }
1944 } else {
1945 if (dvb_frontend_check_parameters(fe, parg) < 0) {
1946 err = -EINVAL;
1947 break;
1948 }
1fab46f0 1949
61cb27af 1950 memcpy (&fepriv->parameters_in, parg,
6b73eeaf 1951 sizeof (struct dvb_frontend_parameters));
674ce343 1952 dtv_property_cache_init(fe, c);
bbe880b4 1953 dtv_property_cache_sync(fe, c, &fepriv->parameters_in);
6b73eeaf 1954 }
1da177e4 1955
56ce5ac4
AO		 1956 /*
1957 * Initialize output parameters to match the values given by
1958 * the user. FE_SET_FRONTEND triggers an initial frontend event
1959 * with status = 0, which copies output parameters to userspace.
1960 */
1961 fepriv->parameters_out = fepriv->parameters_in;
1962
1da177e4 1963 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
1da177e4
LT		 1964
1965 /* force auto frequency inversion if requested */
1966 if (dvb_force_auto_inversion) {
ac3852c4 1967 c->inversion = INVERSION_AUTO;
1da177e4 1968 }
dea74869 1969 if (fe->ops.info.type == FE_OFDM) {
1b3c3714 1970 /* without hierarchical coding code_rate_LP is irrelevant,
1da177e4 1971 * so we tolerate the otherwise invalid FEC_NONE setting */
ac3852c4
MCC		 1972 if (c->hierarchy == HIERARCHY_NONE &&
1973 c->code_rate_LP == FEC_NONE)
1974 c->code_rate_LP = FEC_AUTO;
1da177e4
LT		 1975 }
1976
1977 /* get frontend-specific tuning settings */
dea74869 1978 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
1da177e4
LT		 1979 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
1980 fepriv->max_drift = fetunesettings.max_drift;
1981 fepriv->step_size = fetunesettings.step_size;
1982 } else {
1983 /* default values */
dea74869 1984 switch(fe->ops.info.type) {
1da177e4
LT		 1985 case FE_QPSK:
1986 fepriv->min_delay = HZ/20;
ac3852c4
MCC		 1987 fepriv->step_size = c->symbol_rate / 16000;
1988 fepriv->max_drift = c->symbol_rate / 2000;
1da177e4
LT		 1989 break;
1990
1991 case FE_QAM:
1992 fepriv->min_delay = HZ/20;
1993 fepriv->step_size = 0; /* no zigzag */
1994 fepriv->max_drift = 0;
1995 break;
1996
1997 case FE_OFDM:
1998 fepriv->min_delay = HZ/20;
dea74869
PB		 1999 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
2000 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
1da177e4
LT		 2001 break;
2002 case FE_ATSC:
4821fb1d
MA		 2003 fepriv->min_delay = HZ/20;
2004 fepriv->step_size = 0;
2005 fepriv->max_drift = 0;
1da177e4
LT		 2006 break;
2007 }
2008 }
2009 if (dvb_override_tune_delay > 0)
2010 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
2011
2012 fepriv->state = FESTATE_RETUNE;
1d06059c
IL		 2013
2014 /* Request the search algorithm to search */
2015 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
2016
20640bea 2017 dvb_frontend_clear_events(fe);
1da177e4 2018 dvb_frontend_add_event(fe, 0);
5c9f480b 2019 dvb_frontend_wakeup(fe);
1da177e4
LT		 2020 fepriv->status = 0;
2021 err = 0;
2022 break;
2023 }
2024
2025 case FE_GET_EVENT:
2026 err = dvb_frontend_get_event (fe, parg, file->f_flags);
2027 break;
2028
2029 case FE_GET_FRONTEND:
7c61d80a 2030 err = dtv_get_frontend(fe, &fepriv->parameters_out);
a689e365
MCC		 2031 if (err >= 0)
2032 memcpy(parg, &fepriv->parameters_out,
2033 sizeof(struct dvb_frontend_parameters));
1da177e4 2034 break;
36cb557a
AQ		 2035
2036 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 2037 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 2038 err = 0;
36cb557a 2039 break;
1da177e4
LT		 2040 };
2041
9133aee0
MK		 2042 if (fe->dvb->fe_ioctl_override) {
2043 cb_err = fe->dvb->fe_ioctl_override(fe, cmd, parg,
2044 DVB_FE_IOCTL_POST);
2045 if (cb_err < 0)
2046 return cb_err;
2047 }
2048
1da177e4
LT		 2049 return err;
2050}
2051
6b73eeaf 2052
1da177e4
LT		 2053static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
2054{
2055 struct dvb_device *dvbdev = file->private_data;
2056 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2057 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 2058
46b4f7c1 2059 dprintk ("%s\n", __func__);
1da177e4
LT		 2060
2061 poll_wait (file, &fepriv->events.wait_queue, wait);
2062
2063 if (fepriv->events.eventw != fepriv->events.eventr)
2064 return (POLLIN | POLLRDNORM | POLLPRI);
2065
2066 return 0;
2067}
2068
2069static int dvb_frontend_open(struct inode *inode, struct file *file)
2070{
2071 struct dvb_device *dvbdev = file->private_data;
2072 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2073 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 2074 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 2075 int ret;
2076
46b4f7c1 2077 dprintk ("%s\n", __func__);
e36309f5
MC		 2078 if (fepriv->exit == DVB_FE_DEVICE_REMOVED)
2079 return -ENODEV;
1da177e4 2080
59b1842d
DB		 2081 if (adapter->mfe_shared) {
2082 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 2083
2084 if (adapter->mfe_dvbdev == NULL)
2085 adapter->mfe_dvbdev = dvbdev;
2086
2087 else if (adapter->mfe_dvbdev != dvbdev) {
2088 struct dvb_device
2089 *mfedev = adapter->mfe_dvbdev;
2090 struct dvb_frontend
2091 *mfe = mfedev->priv;
2092 struct dvb_frontend_private
2093 *mfepriv = mfe->frontend_priv;
2094 int mferetry = (dvb_mfe_wait_time << 1);
2095
2096 mutex_unlock (&adapter->mfe_lock);
2097 while (mferetry-- && (mfedev->users != -1 ||
2098 mfepriv->thread != NULL)) {
2099 if(msleep_interruptible(500)) {
2100 if(signal_pending(current))
2101 return -EINTR;
59b1842d 2102 }
6594690b
DB		 2103 }
2104
2105 mutex_lock (&adapter->mfe_lock);
2106 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 2107 mfedev = adapter->mfe_dvbdev;
2108 mfe = mfedev->priv;
2109 mfepriv = mfe->frontend_priv;
6594690b
DB		 2110 if (mfedev->users != -1 ||
2111 mfepriv->thread != NULL) {
2112 mutex_unlock (&adapter->mfe_lock);
2113 return -EBUSY;
59b1842d 2114 }
6594690b 2115 adapter->mfe_dvbdev = dvbdev;
59b1842d 2116 }
59b1842d
DB		 2117 }
2118 }
2119
48136e1e
OE		 2120 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
2121 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 2122 goto err0;
2d196931
DH		 2123
2124 /* If we took control of the bus, we need to force
2125 reinitialization. This is because many ts_bus_ctrl()
2126 functions strobe the RESET pin on the demod, and if the
2127 frontend thread already exists then the dvb_init() routine
2128 won't get called (which is what usually does initial
2129 register configuration). */
2130 fepriv->reinitialise = 1;
ba7e6f3e
ST		 2131 }
2132
48136e1e
OE		 2133 if ((ret = dvb_generic_open (inode, file)) < 0)
2134 goto err1;
04c56d0e 2135
48136e1e 2136 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 2137 /* normal tune mode when opened R/W */
2138 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
2139 fepriv->tone = -1;
2140 fepriv->voltage = -1;
2141
1da177e4
LT		 2142 ret = dvb_frontend_start (fe);
2143 if (ret)
48136e1e 2144 goto err2;
1da177e4
LT		 2145
2146 /* empty event queue */
2147 fepriv->events.eventr = fepriv->events.eventw = 0;
2148 }
2149
59b1842d
DB		 2150 if (adapter->mfe_shared)
2151 mutex_unlock (&adapter->mfe_lock);
1da177e4 2152 return ret;
48136e1e
OE		 2153
2154err2:
2155 dvb_generic_release(inode, file);
2156err1:
2157 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
2158 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 2159err0:
2160 if (adapter->mfe_shared)
2161 mutex_unlock (&adapter->mfe_lock);
48136e1e 2162 return ret;
1da177e4
LT		 2163}
2164
2165static int dvb_frontend_release(struct inode *inode, struct file *file)
2166{
2167 struct dvb_device *dvbdev = file->private_data;
2168 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2169 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 2170 int ret;
1da177e4 2171
46b4f7c1 2172 dprintk ("%s\n", __func__);
1da177e4 2173
b9d5efcc 2174 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1da177e4 2175 fepriv->release_jiffies = jiffies;
b9d5efcc
AO		 2176 mb();
2177 }
1da177e4 2178
ca5be9cd
MR		 2179 ret = dvb_generic_release (inode, file);
2180
48136e1e 2181 if (dvbdev->users == -1) {
b9d5efcc 2182 wake_up(&fepriv->wait_queue);
e36309f5 2183 if (fepriv->exit != DVB_FE_NO_EXIT) {
48136e1e
OE		 2184 fops_put(file->f_op);
2185 file->f_op = NULL;
2186 wake_up(&dvbdev->wait_queue);
2187 }
2188 if (fe->ops.ts_bus_ctrl)
2189 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 2190 }
48136e1e 2191
ca5be9cd 2192 return ret;
1da177e4
LT		 2193}
2194
784e29d2 2195static const struct file_operations dvb_frontend_fops = {
1da177e4 2196 .owner = THIS_MODULE,
16ef8def 2197 .unlocked_ioctl = dvb_generic_ioctl,
1da177e4
LT		 2198 .poll = dvb_frontend_poll,
2199 .open = dvb_frontend_open,
6038f373
AB		 2200 .release = dvb_frontend_release,
2201 .llseek = noop_llseek,
1da177e4
LT		 2202};
2203
2204int dvb_register_frontend(struct dvb_adapter* dvb,
2205 struct dvb_frontend* fe)
2206{
2207 struct dvb_frontend_private *fepriv;
2208 static const struct dvb_device dvbdev_template = {
2209 .users = ~0,
2210 .writers = 1,
2211 .readers = (~0)-1,
2212 .fops = &dvb_frontend_fops,
2213 .kernel_ioctl = dvb_frontend_ioctl
2214 };
2215
46b4f7c1 2216 dprintk ("%s\n", __func__);
1da177e4 2217
3593cab5 2218 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 2219 return -ERESTARTSYS;
2220
7408187d 2221 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 2222 if (fe->frontend_priv == NULL) {
3593cab5 2223 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2224 return -ENOMEM;
2225 }
0c53c70f 2226 fepriv = fe->frontend_priv;
1da177e4 2227
a0a4714c 2228 sema_init(&fepriv->sem, 1);
1da177e4
LT		 2229 init_waitqueue_head (&fepriv->wait_queue);
2230 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 2231 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 2232 fe->dvb = dvb;
2233 fepriv->inversion = INVERSION_OFF;
2234
363c35fc 2235 printk ("DVB: registering adapter %i frontend %i (%s)...\n",
1da177e4 2236 fe->dvb->num,
363c35fc 2237 fe->id,
dea74869 2238 fe->ops.info.name);
1da177e4
LT		 2239
2240 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
2241 fe, DVB_DEVICE_FRONTEND);
2242
3593cab5 2243 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2244 return 0;
2245}
2246EXPORT_SYMBOL(dvb_register_frontend);
2247
2248int dvb_unregister_frontend(struct dvb_frontend* fe)
2249{
0c53c70f 2250 struct dvb_frontend_private *fepriv = fe->frontend_priv;
46b4f7c1 2251 dprintk ("%s\n", __func__);
1da177e4 2252
57861b43 2253 mutex_lock(&frontend_mutex);
ca5be9cd 2254 dvb_frontend_stop (fe);
57861b43
MR		 2255 mutex_unlock(&frontend_mutex);
2256
2257 if (fepriv->dvbdev->users < -1)
2258 wait_event(fepriv->dvbdev->wait_queue,
2259 fepriv->dvbdev->users==-1);
2260
3593cab5 2261 mutex_lock(&frontend_mutex);
1da177e4 2262 dvb_unregister_device (fepriv->dvbdev);
d9955060 2263
1da177e4
LT		 2264 /* fe is invalid now */
2265 kfree(fepriv);
3593cab5 2266 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2267 return 0;
2268}
2269EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 2270
149ef72d 2271#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 2272void dvb_frontend_detach(struct dvb_frontend* fe)
2273{
2274 void *ptr;
2275
2276 if (fe->ops.release_sec) {
2277 fe->ops.release_sec(fe);
2278 symbol_put_addr(fe->ops.release_sec);
2279 }
2280 if (fe->ops.tuner_ops.release) {
2281 fe->ops.tuner_ops.release(fe);
2282 symbol_put_addr(fe->ops.tuner_ops.release);
2283 }
2426a27e
MK		 2284 if (fe->ops.analog_ops.release) {
2285 fe->ops.analog_ops.release(fe);
2286 symbol_put_addr(fe->ops.analog_ops.release);
2287 }
f52a838b
AQ		 2288 ptr = (void*)fe->ops.release;
2289 if (ptr) {
2290 fe->ops.release(fe);
2291 symbol_put_addr(ptr);
2292 }
2293}
2294#else
2295void dvb_frontend_detach(struct dvb_frontend* fe)
2296{
2297 if (fe->ops.release_sec)
2298 fe->ops.release_sec(fe);
2299 if (fe->ops.tuner_ops.release)
2300 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 2301 if (fe->ops.analog_ops.release)
2302 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 2303 if (fe->ops.release)
2304 fe->ops.release(fe);
2305}
2306#endif
2307EXPORT_SYMBOL(dvb_frontend_detach);
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