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[media] mb86a20s: get rid of dummy get_frontend()
[mirror_ubuntu-artful-kernel.git] / drivers / media / 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>
9056a23b 43#include <linux/ktime.h>
1da177e4 44#include <asm/processor.h>
1da177e4
LT		 45
46#include "dvb_frontend.h"
47#include "dvbdev.h"
eacf8d8d 48#include <linux/dvb/version.h>
1da177e4
LT		 49
50static int dvb_frontend_debug;
849be2cd 51static int dvb_shutdown_timeout;
1da177e4
LT		 52static int dvb_force_auto_inversion;
53static int dvb_override_tune_delay;
54static int dvb_powerdown_on_sleep = 1;
59b1842d 55static int dvb_mfe_wait_time = 5;
1da177e4
LT		 56
57module_param_named(frontend_debug, dvb_frontend_debug, int, 0644);
f4f009a7 58MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off).");
6baad3f0 59module_param(dvb_shutdown_timeout, int, 0644);
1da177e4 60MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware");
6baad3f0 61module_param(dvb_force_auto_inversion, int, 0644);
1da177e4 62MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always");
6baad3f0 63module_param(dvb_override_tune_delay, int, 0644);
1da177e4 64MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
6baad3f0 65module_param(dvb_powerdown_on_sleep, int, 0644);
a8558577 66MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
59b1842d
DB		 67module_param(dvb_mfe_wait_time, int, 0644);
68MODULE_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 69
1da177e4
LT		 70#define FESTATE_IDLE 1
71#define FESTATE_RETUNE 2
72#define FESTATE_TUNING_FAST 4
73#define FESTATE_TUNING_SLOW 8
74#define FESTATE_TUNED 16
75#define FESTATE_ZIGZAG_FAST 32
76#define FESTATE_ZIGZAG_SLOW 64
77#define FESTATE_DISEQC 128
01886255 78#define FESTATE_ERROR 256
1da177e4
LT		 79#define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
80#define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
81#define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
82#define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
0249ef16 83
1da177e4
LT		 84/*
85 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
86 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
87 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
88 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
89 * FESTATE_TUNED. The frontend has successfully locked on.
90 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
91 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
92 * FESTATE_DISEQC. A DISEQC command has just been issued.
93 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
94 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
95 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
96 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
97 */
98
3593cab5 99static DEFINE_MUTEX(frontend_mutex);
1da177e4
LT		 100
101struct dvb_frontend_private {
102
36cb557a 103 /* thread/frontend values */
1da177e4 104 struct dvb_device *dvbdev;
a5959dbe 105 struct dvb_frontend_parameters parameters_out;
1da177e4
LT		 106 struct dvb_fe_events events;
107 struct semaphore sem;
108 struct list_head list_head;
109 wait_queue_head_t wait_queue;
8eec1429 110 struct task_struct *thread;
1da177e4 111 unsigned long release_jiffies;
36cb557a 112 unsigned int wakeup;
0df289a2 113 enum fe_status status;
400b7083 114 unsigned long tune_mode_flags;
36cb557a 115 unsigned int delay;
86f40cc3 116 unsigned int reinitialise;
64454016
AQ		 117 int tone;
118 int voltage;
36cb557a
AQ		 119
120 /* swzigzag values */
121 unsigned int state;
122 unsigned int bending;
123 int lnb_drift;
124 unsigned int inversion;
125 unsigned int auto_step;
126 unsigned int auto_sub_step;
127 unsigned int started_auto_step;
128 unsigned int min_delay;
129 unsigned int max_drift;
130 unsigned int step_size;
131 int quality;
132 unsigned int check_wrapped;
c59e7870 133 enum dvbfe_search algo_status;
135f9be9
MCC		 134
135#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
136 struct media_pipeline pipe;
137 struct media_entity *pipe_start_entity;
138#endif
1da177e4
LT		 139};
140
86f40cc3 141static void dvb_frontend_wakeup(struct dvb_frontend *fe);
a689e365 142static int dtv_get_frontend(struct dvb_frontend *fe,
2ea9a08d 143 struct dtv_frontend_properties *c,
a689e365 144 struct dvb_frontend_parameters *p_out);
2ea9a08d
MCC		 145static int
146dtv_property_legacy_params_sync(struct dvb_frontend *fe,
147 const struct dtv_frontend_properties *c,
148 struct dvb_frontend_parameters *p);
a689e365
MCC		 149
150static bool has_get_frontend(struct dvb_frontend *fe)
151{
c065f5b4 152 return fe->ops.get_frontend != NULL;
a689e365 153}
1da177e4 154
5bfaadde
MCC		 155/*
156 * Due to DVBv3 API calls, a delivery system should be mapped into one of
157 * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
158 * otherwise, a DVBv3 call will fail.
159 */
160enum dvbv3_emulation_type {
161 DVBV3_UNKNOWN,
162 DVBV3_QPSK,
163 DVBV3_QAM,
164 DVBV3_OFDM,
165 DVBV3_ATSC,
166};
167
168static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system)
169{
170 switch (delivery_system) {
171 case SYS_DVBC_ANNEX_A:
172 case SYS_DVBC_ANNEX_C:
173 return DVBV3_QAM;
174 case SYS_DVBS:
175 case SYS_DVBS2:
176 case SYS_TURBO:
177 case SYS_ISDBS:
178 case SYS_DSS:
179 return DVBV3_QPSK;
180 case SYS_DVBT:
181 case SYS_DVBT2:
182 case SYS_ISDBT:
224b6642 183 case SYS_DTMB:
5bfaadde
MCC		 184 return DVBV3_OFDM;
185 case SYS_ATSC:
ca689488 186 case SYS_ATSCMH:
5bfaadde
MCC		 187 case SYS_DVBC_ANNEX_B:
188 return DVBV3_ATSC;
189 case SYS_UNDEFINED:
190 case SYS_ISDBC:
191 case SYS_DVBH:
192 case SYS_DAB:
5bfaadde
MCC		 193 default:
194 /*
195 * Doesn't know how to emulate those types and/or
196 * there's no frontend driver from this type yet
197 * with some emulation code, so, we're not sure yet how
198 * to handle them, or they're not compatible with a DVBv3 call.
199 */
200 return DVBV3_UNKNOWN;
201 }
202}
203
0df289a2
MCC		 204static void dvb_frontend_add_event(struct dvb_frontend *fe,
205 enum fe_status status)
1da177e4 206{
0c53c70f 207 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2ea9a08d 208 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1da177e4
LT		 209 struct dvb_fe_events *events = &fepriv->events;
210 struct dvb_frontend_event *e;
211 int wp;
212
36bdbc3f 213 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 214
a689e365 215 if ((status & FE_HAS_LOCK) && has_get_frontend(fe))
2ea9a08d 216 dtv_get_frontend(fe, c, &fepriv->parameters_out);
1da177e4 217
77b1e2fb 218 mutex_lock(&events->mtx);
1da177e4 219
77b1e2fb 220 wp = (events->eventw + 1) % MAX_EVENT;
1da177e4
LT		 221 if (wp == events->eventr) {
222 events->overflow = 1;
223 events->eventr = (events->eventr + 1) % MAX_EVENT;
224 }
225
226 e = &events->events[events->eventw];
77b1e2fb 227 e->status = status;
a5959dbe 228 e->parameters = fepriv->parameters_out;
1da177e4
LT		 229
230 events->eventw = wp;
231
03b76123 232 mutex_unlock(&events->mtx);
1da177e4 233
1da177e4
LT		 234 wake_up_interruptible (&events->wait_queue);
235}
236
237static int dvb_frontend_get_event(struct dvb_frontend *fe,
238 struct dvb_frontend_event *event, int flags)
239{
0c53c70f 240 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 241 struct dvb_fe_events *events = &fepriv->events;
242
36bdbc3f 243 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 244
245 if (events->overflow) {
246 events->overflow = 0;
247 return -EOVERFLOW;
248 }
249
250 if (events->eventw == events->eventr) {
251 int ret;
252
253 if (flags & O_NONBLOCK)
254 return -EWOULDBLOCK;
255
256 up(&fepriv->sem);
257
258 ret = wait_event_interruptible (events->wait_queue,
259 events->eventw != events->eventr);
260
261 if (down_interruptible (&fepriv->sem))
262 return -ERESTARTSYS;
263
264 if (ret < 0)
265 return ret;
266 }
267
77b1e2fb
AO		 268 mutex_lock(&events->mtx);
269 *event = events->events[events->eventr];
1da177e4 270 events->eventr = (events->eventr + 1) % MAX_EVENT;
03b76123 271 mutex_unlock(&events->mtx);
1da177e4
LT		 272
273 return 0;
274}
275
20640bea
AO		 276static void dvb_frontend_clear_events(struct dvb_frontend *fe)
277{
278 struct dvb_frontend_private *fepriv = fe->frontend_priv;
279 struct dvb_fe_events *events = &fepriv->events;
280
281 mutex_lock(&events->mtx);
282 events->eventr = events->eventw;
283 mutex_unlock(&events->mtx);
284}
285
1da177e4
LT		 286static void dvb_frontend_init(struct dvb_frontend *fe)
287{
36bdbc3f
AP		 288 dev_dbg(fe->dvb->device,
289 "%s: initialising adapter %i frontend %i (%s)...\n",
290 __func__, fe->dvb->num, fe->id, fe->ops.info.name);
dea74869
PB		 291
292 if (fe->ops.init)
293 fe->ops.init(fe);
294 if (fe->ops.tuner_ops.init) {
3b37a15c
MA		 295 if (fe->ops.i2c_gate_ctrl)
296 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 297 fe->ops.tuner_ops.init(fe);
298 if (fe->ops.i2c_gate_ctrl)
299 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 300 }
1da177e4
LT		 301}
302
86f40cc3
AQ		 303void dvb_frontend_reinitialise(struct dvb_frontend *fe)
304{
305 struct dvb_frontend_private *fepriv = fe->frontend_priv;
306
307 fepriv->reinitialise = 1;
308 dvb_frontend_wakeup(fe);
309}
310EXPORT_SYMBOL(dvb_frontend_reinitialise);
311
36cb557a 312static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked)
1da177e4 313{
36cb557a 314 int q2;
36bdbc3f 315 struct dvb_frontend *fe = fepriv->dvbdev->priv;
1da177e4 316
36bdbc3f 317 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 318
36cb557a
AQ		 319 if (locked)
320 (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256;
321 else
322 (fepriv->quality) = (fepriv->quality * 220 + 0) / 256;
1da177e4 323
36cb557a
AQ		 324 q2 = fepriv->quality - 128;
325 q2 *= q2;
1da177e4 326
36cb557a 327 fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128);
1da177e4
LT		 328}
329
330/**
331 * Performs automatic twiddling of frontend parameters.
332 *
333 * @param fe The frontend concerned.
334 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
335 * @returns Number of complete iterations that have been performed.
336 */
36cb557a 337static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped)
1da177e4
LT		 338{
339 int autoinversion;
340 int ready = 0;
01886255 341 int fe_set_err = 0;
0c53c70f 342 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4
MCC		 343 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
344 int original_inversion = c->inversion;
345 u32 original_frequency = c->frequency;
1da177e4
LT		 346
347 /* are we using autoinversion? */
dea74869 348 autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4 349 (c->inversion == INVERSION_AUTO));
1da177e4
LT		 350
351 /* setup parameters correctly */
352 while(!ready) {
353 /* calculate the lnb_drift */
354 fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size;
355
356 /* wrap the auto_step if we've exceeded the maximum drift */
357 if (fepriv->lnb_drift > fepriv->max_drift) {
358 fepriv->auto_step = 0;
359 fepriv->auto_sub_step = 0;
360 fepriv->lnb_drift = 0;
361 }
362
363 /* perform inversion and +/- zigzag */
364 switch(fepriv->auto_sub_step) {
365 case 0:
366 /* try with the current inversion and current drift setting */
367 ready = 1;
368 break;
369
370 case 1:
371 if (!autoinversion) break;
372
373 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
374 ready = 1;
375 break;
376
377 case 2:
378 if (fepriv->lnb_drift == 0) break;
379
380 fepriv->lnb_drift = -fepriv->lnb_drift;
381 ready = 1;
382 break;
383
384 case 3:
385 if (fepriv->lnb_drift == 0) break;
386 if (!autoinversion) break;
387
388 fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF;
389 fepriv->lnb_drift = -fepriv->lnb_drift;
390 ready = 1;
391 break;
392
393 default:
394 fepriv->auto_step++;
395 fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */
396 break;
397 }
398
399 if (!ready) fepriv->auto_sub_step++;
400 }
401
402 /* if this attempt would hit where we started, indicate a complete
403 * iteration has occurred */
404 if ((fepriv->auto_step == fepriv->started_auto_step) &&
405 (fepriv->auto_sub_step == 0) && check_wrapped) {
406 return 1;
407 }
408
36bdbc3f
AP		 409 dev_dbg(fe->dvb->device, "%s: drift:%i inversion:%i auto_step:%i " \
410 "auto_sub_step:%i started_auto_step:%i\n",
411 __func__, fepriv->lnb_drift, fepriv->inversion,
412 fepriv->auto_step, fepriv->auto_sub_step,
413 fepriv->started_auto_step);
1da177e4
LT		 414
415 /* set the frontend itself */
ac3852c4 416 c->frequency += fepriv->lnb_drift;
1da177e4 417 if (autoinversion)
ac3852c4
MCC		 418 c->inversion = fepriv->inversion;
419 tmp = *c;
dea74869 420 if (fe->ops.set_frontend)
bc9cd273 421 fe_set_err = fe->ops.set_frontend(fe);
ac3852c4 422 *c = tmp;
01886255
JG		 423 if (fe_set_err < 0) {
424 fepriv->state = FESTATE_ERROR;
425 return fe_set_err;
426 }
1da177e4 427
ac3852c4
MCC		 428 c->frequency = original_frequency;
429 c->inversion = original_inversion;
1da177e4
LT		 430
431 fepriv->auto_sub_step++;
432 return 0;
433}
434
36cb557a
AQ		 435static void dvb_frontend_swzigzag(struct dvb_frontend *fe)
436{
0df289a2 437 enum fe_status s = 0;
01886255 438 int retval = 0;
36cb557a 439 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac3852c4 440 struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp;
36cb557a
AQ		 441
442 /* if we've got no parameters, just keep idling */
443 if (fepriv->state & FESTATE_IDLE) {
444 fepriv->delay = 3*HZ;
445 fepriv->quality = 0;
446 return;
447 }
448
449 /* in SCAN mode, we just set the frontend when asked and leave it alone */
450 if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) {
451 if (fepriv->state & FESTATE_RETUNE) {
ac3852c4 452 tmp = *c;
dea74869 453 if (fe->ops.set_frontend)
bc9cd273 454 retval = fe->ops.set_frontend(fe);
ac3852c4 455 *c = tmp;
01886255
JG		 456 if (retval < 0)
457 fepriv->state = FESTATE_ERROR;
458 else
459 fepriv->state = FESTATE_TUNED;
36cb557a
AQ		 460 }
461 fepriv->delay = 3*HZ;
462 fepriv->quality = 0;
463 return;
464 }
465
466 /* get the frontend status */
467 if (fepriv->state & FESTATE_RETUNE) {
468 s = 0;
469 } else {
dea74869
PB		 470 if (fe->ops.read_status)
471 fe->ops.read_status(fe, &s);
36cb557a
AQ		 472 if (s != fepriv->status) {
473 dvb_frontend_add_event(fe, s);
474 fepriv->status = s;
475 }
476 }
477
478 /* if we're not tuned, and we have a lock, move to the TUNED state */
479 if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) {
480 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
481 fepriv->state = FESTATE_TUNED;
482
483 /* if we're tuned, then we have determined the correct inversion */
dea74869 484 if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) &&
ac3852c4
MCC		 485 (c->inversion == INVERSION_AUTO)) {
486 c->inversion = fepriv->inversion;
36cb557a
AQ		 487 }
488 return;
489 }
490
491 /* if we are tuned already, check we're still locked */
492 if (fepriv->state & FESTATE_TUNED) {
493 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
494
495 /* we're tuned, and the lock is still good... */
496 if (s & FE_HAS_LOCK) {
497 return;
498 } else { /* if we _WERE_ tuned, but now don't have a lock */
499 fepriv->state = FESTATE_ZIGZAG_FAST;
500 fepriv->started_auto_step = fepriv->auto_step;
501 fepriv->check_wrapped = 0;
502 }
503 }
504
505 /* don't actually do anything if we're in the LOSTLOCK state,
506 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
507 if ((fepriv->state & FESTATE_LOSTLOCK) &&
dea74869 508 (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) {
36cb557a
AQ		 509 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
510 return;
511 }
512
513 /* don't do anything if we're in the DISEQC state, since this
514 * might be someone with a motorized dish controlled by DISEQC.
515 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
516 if (fepriv->state & FESTATE_DISEQC) {
517 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
518 return;
519 }
520
521 /* if we're in the RETUNE state, set everything up for a brand
522 * new scan, keeping the current inversion setting, as the next
523 * tune is _very_ likely to require the same */
524 if (fepriv->state & FESTATE_RETUNE) {
525 fepriv->lnb_drift = 0;
526 fepriv->auto_step = 0;
527 fepriv->auto_sub_step = 0;
528 fepriv->started_auto_step = 0;
529 fepriv->check_wrapped = 0;
530 }
531
532 /* fast zigzag. */
533 if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) {
534 fepriv->delay = fepriv->min_delay;
535
2030c032 536 /* perform a tune */
01886255
JG		 537 retval = dvb_frontend_swzigzag_autotune(fe,
538 fepriv->check_wrapped);
539 if (retval < 0) {
540 return;
541 } else if (retval) {
36cb557a
AQ		 542 /* OK, if we've run out of trials at the fast speed.
543 * Drop back to slow for the _next_ attempt */
544 fepriv->state = FESTATE_SEARCHING_SLOW;
545 fepriv->started_auto_step = fepriv->auto_step;
546 return;
547 }
548 fepriv->check_wrapped = 1;
549
550 /* if we've just retuned, enter the ZIGZAG_FAST state.
551 * This ensures we cannot return from an
552 * FE_SET_FRONTEND ioctl before the first frontend tune
553 * occurs */
554 if (fepriv->state & FESTATE_RETUNE) {
555 fepriv->state = FESTATE_TUNING_FAST;
556 }
557 }
558
559 /* slow zigzag */
560 if (fepriv->state & FESTATE_SEARCHING_SLOW) {
561 dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK);
562
563 /* Note: don't bother checking for wrapping; we stay in this
564 * state until we get a lock */
565 dvb_frontend_swzigzag_autotune(fe, 0);
566 }
567}
568
1da177e4
LT		 569static int dvb_frontend_is_exiting(struct dvb_frontend *fe)
570{
0c53c70f 571 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 572
18ed2860 573 if (fe->exit != DVB_FE_NO_EXIT)
1da177e4
LT		 574 return 1;
575
576 if (fepriv->dvbdev->writers == 1)
b9d5efcc 577 if (time_after_eq(jiffies, fepriv->release_jiffies +
36cb557a 578 dvb_shutdown_timeout * HZ))
1da177e4
LT		 579 return 1;
580
581 return 0;
582}
583
584static int dvb_frontend_should_wakeup(struct dvb_frontend *fe)
585{
0c53c70f 586 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 587
588 if (fepriv->wakeup) {
589 fepriv->wakeup = 0;
590 return 1;
591 }
592 return dvb_frontend_is_exiting(fe);
593}
594
595static void dvb_frontend_wakeup(struct dvb_frontend *fe)
596{
0c53c70f 597 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4
LT		 598
599 fepriv->wakeup = 1;
600 wake_up_interruptible(&fepriv->wait_queue);
601}
602
9239effd
MCC		 603/**
604 * dvb_enable_media_tuner() - tries to enable the DVB tuner
605 *
606 * @fe: struct dvb_frontend pointer
607 *
608 * This function ensures that just one media tuner is enabled for a given
609 * frontend. It has two different behaviors:
610 * - For trivial devices with just one tuner:
611 * it just enables the existing tuner->fe link
612 * - For devices with more than one tuner:
613 * It is up to the driver to implement the logic that will enable one tuner
614 * and disable the other ones. However, if more than one tuner is enabled for
615 * the same frontend, it will print an error message and return -EINVAL.
616 *
617 * At return, it will return the error code returned by media_entity_setup_link,
618 * or 0 if everything is OK, if no tuner is linked to the frontend or if the
619 * mdev is NULL.
620 */
135f9be9 621#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd
MCC		 622static int dvb_enable_media_tuner(struct dvb_frontend *fe)
623{
9239effd
MCC		 624 struct dvb_frontend_private *fepriv = fe->frontend_priv;
625 struct dvb_adapter *adapter = fe->dvb;
626 struct media_device *mdev = adapter->mdev;
627 struct media_entity *entity, *source;
628 struct media_link *link, *found_link = NULL;
57208e5e 629 int ret, n_links = 0, active_links = 0;
9239effd 630
135f9be9
MCC		 631 fepriv->pipe_start_entity = NULL;
632
9239effd
MCC		 633 if (!mdev)
634 return 0;
635
636 entity = fepriv->dvbdev->entity;
135f9be9
MCC		 637 fepriv->pipe_start_entity = entity;
638
57208e5e 639 list_for_each_entry(link, &entity->links, list) {
9239effd
MCC		 640 if (link->sink->entity == entity) {
641 found_link = link;
642 n_links++;
643 if (link->flags & MEDIA_LNK_FL_ENABLED)
644 active_links++;
645 }
646 }
647
648 if (!n_links || active_links == 1 || !found_link)
649 return 0;
650
651 /*
652 * If a frontend has more than one tuner linked, it is up to the driver
653 * to select with one will be the active one, as the frontend core can't
654 * guess. If the driver doesn't do that, it is a bug.
655 */
656 if (n_links > 1 && active_links != 1) {
657 dev_err(fe->dvb->device,
658 "WARNING: there are %d active links among %d tuners. This is a driver's bug!\n",
659 active_links, n_links);
660 return -EINVAL;
661 }
662
663 source = found_link->source->entity;
135f9be9 664 fepriv->pipe_start_entity = source;
57208e5e 665 list_for_each_entry(link, &source->links, list) {
9239effd
MCC		 666 struct media_entity *sink;
667 int flags = 0;
668
9239effd 669 sink = link->sink->entity;
9239effd
MCC		 670 if (sink == entity)
671 flags = MEDIA_LNK_FL_ENABLED;
672
673 ret = media_entity_setup_link(link, flags);
674 if (ret) {
675 dev_err(fe->dvb->device,
676 "Couldn't change link %s->%s to %s. Error %d\n",
677 source->name, sink->name,
678 flags ? "enabled" : "disabled",
679 ret);
680 return ret;
681 } else
682 dev_dbg(fe->dvb->device,
683 "link %s->%s was %s\n",
684 source->name, sink->name,
685 flags ? "ENABLED" : "disabled");
686 }
9239effd
MCC		 687 return 0;
688}
135f9be9 689#endif
9239effd 690
1da177e4
LT		 691static int dvb_frontend_thread(void *data)
692{
0c53c70f 693 struct dvb_frontend *fe = data;
2ea9a08d 694 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 695 struct dvb_frontend_private *fepriv = fe->frontend_priv;
0df289a2 696 enum fe_status s;
c59e7870 697 enum dvbfe_algo algo;
c1bd57d3 698#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd 699 int ret;
c1bd57d3 700#endif
c59e7870 701
7e072221 702 bool re_tune = false;
6ae23224 703 bool semheld = false;
1da177e4 704
36bdbc3f 705 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 706
36cb557a
AQ		 707 fepriv->check_wrapped = 0;
708 fepriv->quality = 0;
709 fepriv->delay = 3*HZ;
1da177e4 710 fepriv->status = 0;
1da177e4 711 fepriv->wakeup = 0;
04c56d0e
AQ		 712 fepriv->reinitialise = 0;
713
135f9be9 714#ifdef CONFIG_MEDIA_CONTROLLER_DVB
9239effd
MCC		 715 ret = dvb_enable_media_tuner(fe);
716 if (ret) {
717 /* FIXME: return an error if it fails */
718 dev_info(fe->dvb->device,
719 "proceeding with FE task\n");
8a26a258 720 } else if (fepriv->pipe_start_entity) {
135f9be9
MCC		 721 ret = media_entity_pipeline_start(fepriv->pipe_start_entity,
722 &fepriv->pipe);
723 if (ret)
724 return ret;
9239effd 725 }
135f9be9 726#endif
9239effd 727
04c56d0e 728 dvb_frontend_init(fe);
1da177e4 729
83144186 730 set_freezable();
1da177e4
LT		 731 while (1) {
732 up(&fepriv->sem); /* is locked when we enter the thread... */
6591691b 733restart:
94238e9b 734 wait_event_interruptible_timeout(fepriv->wait_queue,
e42837bc
RW		 735 dvb_frontend_should_wakeup(fe) || kthread_should_stop()
736 || freezing(current),
8eec1429
HP		 737 fepriv->delay);
738
739 if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) {
1da177e4 740 /* got signal or quitting */
6ae23224
JL		 741 if (!down_interruptible(&fepriv->sem))
742 semheld = true;
18ed2860 743 fe->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 744 break;
745 }
746
8eec1429 747 if (try_to_freeze())
6591691b 748 goto restart;
1da177e4
LT		 749
750 if (down_interruptible(&fepriv->sem))
751 break;
752
86f40cc3
AQ		 753 if (fepriv->reinitialise) {
754 dvb_frontend_init(fe);
42f4e774 755 if (fe->ops.set_tone && fepriv->tone != -1)
dea74869 756 fe->ops.set_tone(fe, fepriv->tone);
42f4e774 757 if (fe->ops.set_voltage && fepriv->voltage != -1)
dea74869 758 fe->ops.set_voltage(fe, fepriv->voltage);
86f40cc3
AQ		 759 fepriv->reinitialise = 0;
760 }
761
36cb557a 762 /* do an iteration of the tuning loop */
d772bd03 763 if (fe->ops.get_frontend_algo) {
c59e7870
MA		 764 algo = fe->ops.get_frontend_algo(fe);
765 switch (algo) {
766 case DVBFE_ALGO_HW:
36bdbc3f 767 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
c59e7870 768
d772bd03 769 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 770 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTATE_RETUNE\n", __func__);
7e072221 771 re_tune = true;
d772bd03 772 fepriv->state = FESTATE_TUNED;
45145b67
SA		 773 } else {
774 re_tune = false;
d772bd03
MA		 775 }
776
c59e7870 777 if (fe->ops.tune)
7e072221 778 fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s);
c59e7870 779
2fac9a0f 780 if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) {
36bdbc3f 781 dev_dbg(fe->dvb->device, "%s: state changed, adding current state\n", __func__);
d772bd03
MA		 782 dvb_frontend_add_event(fe, s);
783 fepriv->status = s;
784 }
c59e7870
MA		 785 break;
786 case DVBFE_ALGO_SW:
36bdbc3f 787 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
70d90635 788 dvb_frontend_swzigzag(fe);
c59e7870
MA		 789 break;
790 case DVBFE_ALGO_CUSTOM:
36bdbc3f 791 dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
c59e7870 792 if (fepriv->state & FESTATE_RETUNE) {
36bdbc3f 793 dev_dbg(fe->dvb->device, "%s: Retune requested, FESTAT_RETUNE\n", __func__);
c59e7870
MA		 794 fepriv->state = FESTATE_TUNED;
795 }
796 /* Case where we are going to search for a carrier
797 * User asked us to retune again for some reason, possibly
798 * requesting a search with a new set of parameters
799 */
800 if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
7bcbdf38 801 if (fe->ops.search) {
41da5320 802 fepriv->algo_status = fe->ops.search(fe);
c59e7870
MA		 803 /* We did do a search as was requested, the flags are
804 * now unset as well and has the flags wrt to search.
805 */
7bcbdf38
AJ		 806 } else {
807 fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
808 }
c59e7870
MA		 809 }
810 /* Track the carrier if the search was successful */
1b5d8716 811 if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) {
7bcbdf38
AJ		 812 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
813 fepriv->delay = HZ / 2;
814 }
2ea9a08d 815 dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out);
7bcbdf38
AJ		 816 fe->ops.read_status(fe, &s);
817 if (s != fepriv->status) {
818 dvb_frontend_add_event(fe, s); /* update event list */
819 fepriv->status = s;
820 if (!(s & FE_HAS_LOCK)) {
821 fepriv->delay = HZ / 10;
822 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
823 } else {
824 fepriv->delay = 60 * HZ;
825 }
c59e7870
MA		 826 }
827 break;
828 default:
36bdbc3f 829 dev_dbg(fe->dvb->device, "%s: UNDEFINED ALGO !\n", __func__);
c59e7870
MA		 830 break;
831 }
832 } else {
4a4edcca 833 dvb_frontend_swzigzag(fe);
c59e7870 834 }
1da177e4
LT		 835 }
836
135f9be9 837#ifdef CONFIG_MEDIA_CONTROLLER_DVB
8a26a258
MCC		 838 if (fepriv->pipe_start_entity)
839 media_entity_pipeline_stop(fepriv->pipe_start_entity);
135f9be9
MCC		 840 fepriv->pipe_start_entity = NULL;
841#endif
842
608f62d6
OE		 843 if (dvb_powerdown_on_sleep) {
844 if (fe->ops.set_voltage)
845 fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF);
dea74869 846 if (fe->ops.tuner_ops.sleep) {
41286d97
DH		 847 if (fe->ops.i2c_gate_ctrl)
848 fe->ops.i2c_gate_ctrl(fe, 1);
dea74869
PB		 849 fe->ops.tuner_ops.sleep(fe);
850 if (fe->ops.i2c_gate_ctrl)
851 fe->ops.i2c_gate_ctrl(fe, 0);
7eef5dd6 852 }
dea74869
PB		 853 if (fe->ops.sleep)
854 fe->ops.sleep(fe);
1da177e4
LT		 855 }
856
8eec1429 857 fepriv->thread = NULL;
e36309f5 858 if (kthread_should_stop())
18ed2860 859 fe->exit = DVB_FE_DEVICE_REMOVED;
e36309f5 860 else
18ed2860 861 fe->exit = DVB_FE_NO_EXIT;
1da177e4
LT		 862 mb();
863
6ae23224
JL		 864 if (semheld)
865 up(&fepriv->sem);
1da177e4
LT		 866 dvb_frontend_wakeup(fe);
867 return 0;
868}
869
870static void dvb_frontend_stop(struct dvb_frontend *fe)
871{
0c53c70f 872 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 873
36bdbc3f 874 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 875
18ed2860
SK		 876 if (fe->exit != DVB_FE_DEVICE_REMOVED)
877 fe->exit = DVB_FE_NORMAL_EXIT;
1da177e4
LT		 878 mb();
879
8eec1429 880 if (!fepriv->thread)
1da177e4
LT		 881 return;
882
8eec1429 883 kthread_stop(fepriv->thread);
ca5be9cd 884
a0a4714c 885 sema_init(&fepriv->sem, 1);
1da177e4
LT		 886 fepriv->state = FESTATE_IDLE;
887
888 /* paranoia check in case a signal arrived */
8eec1429 889 if (fepriv->thread)
36bdbc3f
AP		 890 dev_warn(fe->dvb->device,
891 "dvb_frontend_stop: warning: thread %p won't exit\n",
8eec1429 892 fepriv->thread);
1da177e4
LT		 893}
894
83b75b04 895/*
4deea4cb
MCC		 896 * Sleep for the amount of time given by add_usec parameter
897 *
898 * This needs to be as precise as possible, as it affects the detection of
899 * the dish tone command at the satellite subsystem. The precision is improved
900 * by using a scheduled msleep followed by udelay for the remainder.
83b75b04 901 */
9056a23b 902void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec)
83b75b04 903{
a733a41a 904 s32 delta;
83b75b04 905
a733a41a 906 *waketime = ktime_add_us(*waketime, add_usec);
6b3f9998 907 delta = ktime_us_delta(ktime_get_boottime(), *waketime);
83b75b04
N		 908 if (delta > 2500) {
909 msleep((delta - 1500) / 1000);
6b3f9998 910 delta = ktime_us_delta(ktime_get_boottime(), *waketime);
83b75b04
N		 911 }
912 if (delta > 0)
913 udelay(delta);
914}
915EXPORT_SYMBOL(dvb_frontend_sleep_until);
916
1da177e4
LT		 917static int dvb_frontend_start(struct dvb_frontend *fe)
918{
919 int ret;
0c53c70f 920 struct dvb_frontend_private *fepriv = fe->frontend_priv;
8eec1429 921 struct task_struct *fe_thread;
1da177e4 922
36bdbc3f 923 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 924
8eec1429 925 if (fepriv->thread) {
18ed2860 926 if (fe->exit == DVB_FE_NO_EXIT)
1da177e4
LT		 927 return 0;
928 else
929 dvb_frontend_stop (fe);
930 }
931
932 if (signal_pending(current))
933 return -EINTR;
934 if (down_interruptible (&fepriv->sem))
935 return -EINTR;
936
937 fepriv->state = FESTATE_IDLE;
18ed2860 938 fe->exit = DVB_FE_NO_EXIT;
8eec1429 939 fepriv->thread = NULL;
1da177e4
LT		 940 mb();
941
8eec1429 942 fe_thread = kthread_run(dvb_frontend_thread, fe,
363c35fc 943 "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id);
8eec1429
HP		 944 if (IS_ERR(fe_thread)) {
945 ret = PTR_ERR(fe_thread);
36bdbc3f
AP		 946 dev_warn(fe->dvb->device,
947 "dvb_frontend_start: failed to start kthread (%d)\n",
948 ret);
1da177e4
LT		 949 up(&fepriv->sem);
950 return ret;
951 }
8eec1429 952 fepriv->thread = fe_thread;
1da177e4
LT		 953 return 0;
954}
955
2030c032 956static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe,
c471b331
OE		 957 u32 *freq_min, u32 *freq_max)
958{
959 *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min);
960
961 if (fe->ops.info.frequency_max == 0)
962 *freq_max = fe->ops.tuner_ops.info.frequency_max;
963 else if (fe->ops.tuner_ops.info.frequency_max == 0)
964 *freq_max = fe->ops.info.frequency_max;
965 else
966 *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max);
967
968 if (*freq_min == 0 || *freq_max == 0)
36bdbc3f
AP		 969 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
970 fe->dvb->num, fe->id);
c471b331
OE		 971}
972
5bfaadde 973static int dvb_frontend_check_parameters(struct dvb_frontend *fe)
1fab46f0 974{
5bfaadde 975 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
c471b331
OE		 976 u32 freq_min;
977 u32 freq_max;
978
1fab46f0 979 /* range check: frequency */
2030c032 980 dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max);
5bfaadde
MCC		 981 if ((freq_min && c->frequency < freq_min) ||
982 (freq_max && c->frequency > freq_max)) {
36bdbc3f
AP		 983 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
984 fe->dvb->num, fe->id, c->frequency,
985 freq_min, freq_max);
1fab46f0
OE		 986 return -EINVAL;
987 }
988
989 /* range check: symbol rate */
5bfaadde
MCC		 990 switch (c->delivery_system) {
991 case SYS_DVBS:
992 case SYS_DVBS2:
993 case SYS_TURBO:
994 case SYS_DVBC_ANNEX_A:
995 case SYS_DVBC_ANNEX_C:
1fab46f0 996 if ((fe->ops.info.symbol_rate_min &&
5bfaadde 997 c->symbol_rate < fe->ops.info.symbol_rate_min) ||
1fab46f0 998 (fe->ops.info.symbol_rate_max &&
5bfaadde 999 c->symbol_rate > fe->ops.info.symbol_rate_max)) {
36bdbc3f
AP		 1000 dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
1001 fe->dvb->num, fe->id, c->symbol_rate,
1002 fe->ops.info.symbol_rate_min,
1003 fe->ops.info.symbol_rate_max);
1fab46f0
OE		 1004 return -EINVAL;
1005 }
5bfaadde
MCC		 1006 default:
1007 break;
1fab46f0
OE		 1008 }
1009
1010 return 0;
1011}
1012
b6e760f3
PB		 1013static int dvb_frontend_clear_cache(struct dvb_frontend *fe)
1014{
50727719 1015 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
b6e760f3 1016 int i;
149709f5 1017 u32 delsys;
b6e760f3 1018
149709f5 1019 delsys = c->delivery_system;
808d24d6 1020 memset(c, 0, offsetof(struct dtv_frontend_properties, strength));
149709f5 1021 c->delivery_system = delsys;
50727719
AO		 1022
1023 c->state = DTV_CLEAR;
26c924fe 1024
36bdbc3f
AP		 1025 dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n",
1026 __func__, c->delivery_system);
26c924fe 1027
50727719 1028 c->transmission_mode = TRANSMISSION_MODE_AUTO;
26c924fe 1029 c->bandwidth_hz = 0; /* AUTO */
50727719
AO		 1030 c->guard_interval = GUARD_INTERVAL_AUTO;
1031 c->hierarchy = HIERARCHY_AUTO;
26c924fe 1032 c->symbol_rate = 0;
50727719
AO		 1033 c->code_rate_HP = FEC_AUTO;
1034 c->code_rate_LP = FEC_AUTO;
26c924fe 1035 c->fec_inner = FEC_AUTO;
39ce61a8 1036 c->rolloff = ROLLOFF_AUTO;
26c924fe 1037 c->voltage = SEC_VOLTAGE_OFF;
26c924fe
MCC		 1038 c->sectone = SEC_TONE_OFF;
1039 c->pilot = PILOT_AUTO;
50727719 1040
a520ca97
MCC		 1041 c->isdbt_partial_reception = 0;
1042 c->isdbt_sb_mode = 0;
1043 c->isdbt_sb_subchannel = 0;
1044 c->isdbt_sb_segment_idx = 0;
1045 c->isdbt_sb_segment_count = 0;
1046 c->isdbt_layer_enabled = 0;
b6e760f3 1047 for (i = 0; i < 3; i++) {
50727719
AO		 1048 c->layer[i].fec = FEC_AUTO;
1049 c->layer[i].modulation = QAM_AUTO;
a520ca97
MCC		 1050 c->layer[i].interleaving = 0;
1051 c->layer[i].segment_count = 0;
b6e760f3
PB		 1052 }
1053
287cefd0 1054 c->stream_id = NO_STREAM_ID_FILTER;
26c924fe 1055
5bfaadde
MCC		 1056 switch (c->delivery_system) {
1057 case SYS_DVBS:
1058 case SYS_DVBS2:
1059 case SYS_TURBO:
1060 c->modulation = QPSK; /* implied for DVB-S in legacy API */
1061 c->rolloff = ROLLOFF_35;/* implied for DVB-S */
1062 break;
1063 case SYS_ATSC:
1064 c->modulation = VSB_8;
1065 break;
8e281faf
AT		 1066 case SYS_ISDBS:
1067 c->symbol_rate = 28860000;
1068 c->rolloff = ROLLOFF_35;
1069 c->bandwidth_hz = c->symbol_rate / 100 * 135;
1070 break;
5bfaadde
MCC		 1071 default:
1072 c->modulation = QAM_AUTO;
1073 break;
1074 }
1075
33eebec5
AP		 1076 c->lna = LNA_AUTO;
1077
b6e760f3
PB		 1078 return 0;
1079}
1080
1081#define _DTV_CMD(n, s, b) \
1082[n] = { \
1083 .name = #n, \
1084 .cmd = n, \
1085 .set = s,\
1086 .buffer = b \
1087}
1088
ec05a642 1089static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = {
06d3a396
MCC		 1090 _DTV_CMD(DTV_TUNE, 1, 0),
1091 _DTV_CMD(DTV_CLEAR, 1, 0),
6b73eeaf
ST		 1092
1093 /* Set */
06d3a396
MCC		 1094 _DTV_CMD(DTV_FREQUENCY, 1, 0),
1095 _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0),
1096 _DTV_CMD(DTV_MODULATION, 1, 0),
1097 _DTV_CMD(DTV_INVERSION, 1, 0),
1098 _DTV_CMD(DTV_DISEQC_MASTER, 1, 1),
1099 _DTV_CMD(DTV_SYMBOL_RATE, 1, 0),
1100 _DTV_CMD(DTV_INNER_FEC, 1, 0),
1101 _DTV_CMD(DTV_VOLTAGE, 1, 0),
1102 _DTV_CMD(DTV_TONE, 1, 0),
1103 _DTV_CMD(DTV_PILOT, 1, 0),
1104 _DTV_CMD(DTV_ROLLOFF, 1, 0),
1105 _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0),
1106 _DTV_CMD(DTV_HIERARCHY, 1, 0),
1107 _DTV_CMD(DTV_CODE_RATE_HP, 1, 0),
1108 _DTV_CMD(DTV_CODE_RATE_LP, 1, 0),
1109 _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0),
1110 _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0),
224b6642 1111 _DTV_CMD(DTV_INTERLEAVING, 1, 0),
b6e760f3
PB		 1112
1113 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0),
1114 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0),
1115 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0),
1116 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0),
1117 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0),
e7b7949a 1118 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0),
b6e760f3
PB		 1119 _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0),
1120 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0),
1121 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0),
1122 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0),
1123 _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0),
1124 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0),
1125 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0),
1126 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0),
1127 _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0),
1128 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0),
1129 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0),
1130 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0),
1131
287cefd0
EP		 1132 _DTV_CMD(DTV_STREAM_ID, 1, 0),
1133 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0),
8a2697ab 1134 _DTV_CMD(DTV_LNA, 1, 0),
98293ef3 1135
6b73eeaf 1136 /* Get */
06d3a396
MCC		 1137 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1),
1138 _DTV_CMD(DTV_API_VERSION, 0, 0),
ba2780c7
MA		 1139
1140 _DTV_CMD(DTV_ENUM_DELSYS, 0, 0),
ca689488
MK		 1141
1142 _DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0),
1143 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0),
1144
1145 _DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0),
ca689488
MK		 1146 _DTV_CMD(DTV_ATSCMH_NOG, 0, 0),
1147 _DTV_CMD(DTV_ATSCMH_TNOG, 0, 0),
1148 _DTV_CMD(DTV_ATSCMH_SGN, 0, 0),
1149 _DTV_CMD(DTV_ATSCMH_PRC, 0, 0),
1150 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0),
ca689488
MK		 1151 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0),
1152 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0),
1153 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0),
1154 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0),
1155 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0),
1156 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0),
1157 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0),
7cd4ece5
MCC		 1158
1159 /* Statistics API */
1160 _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH, 0, 0),
1161 _DTV_CMD(DTV_STAT_CNR, 0, 0),
1162 _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0, 0),
1163 _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0, 0),
1164 _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0, 0),
1165 _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0, 0),
1166 _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT, 0, 0),
1167 _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0),
6b73eeaf
ST		 1168};
1169
c29ebb64
MCC		 1170static void dtv_property_dump(struct dvb_frontend *fe,
1171 bool is_set,
1172 struct dtv_property *tvp)
6b73eeaf
ST		 1173{
1174 int i;
1175
106ff9e0 1176 if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) {
c29ebb64
MCC		 1177 dev_warn(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x undefined\n",
1178 __func__,
1179 is_set ? "SET" : "GET",
1180 tvp->cmd);
4aae8efb
DB		 1181 return;
1182 }
1183
c29ebb64
MCC		 1184 dev_dbg(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x (%s)\n", __func__,
1185 is_set ? "SET" : "GET",
1186 tvp->cmd,
1187 dtv_cmds[tvp->cmd].name);
6b73eeaf 1188
36bdbc3f
AP		 1189 if (dtv_cmds[tvp->cmd].buffer) {
1190 dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n",
1191 __func__, tvp->u.buffer.len);
6b73eeaf
ST		 1192
1193 for(i = 0; i < tvp->u.buffer.len; i++)
36bdbc3f
AP		 1194 dev_dbg(fe->dvb->device,
1195 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1196 __func__, i, tvp->u.buffer.data[i]);
1197 } else {
1198 dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__,
1199 tvp->u.data);
1200 }
6b73eeaf
ST		 1201}
1202
ee33c525
ST		 1203/* Synchronise the legacy tuning parameters into the cache, so that demodulator
1204 * drivers can use a single set_frontend tuning function, regardless of whether
1205 * it's being used for the legacy or new API, reducing code and complexity.
1206 */
5bfaadde
MCC		 1207static int dtv_property_cache_sync(struct dvb_frontend *fe,
1208 struct dtv_frontend_properties *c,
1209 const struct dvb_frontend_parameters *p)
ee33c525 1210{
ee33c525
ST		 1211 c->frequency = p->frequency;
1212 c->inversion = p->inversion;
1213
5bfaadde
MCC		 1214 switch (dvbv3_type(c->delivery_system)) {
1215 case DVBV3_QPSK:
36bdbc3f 1216 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
ee33c525
ST		 1217 c->symbol_rate = p->u.qpsk.symbol_rate;
1218 c->fec_inner = p->u.qpsk.fec_inner;
1219 break;
5bfaadde 1220 case DVBV3_QAM:
36bdbc3f 1221 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
ee33c525
ST		 1222 c->symbol_rate = p->u.qam.symbol_rate;
1223 c->fec_inner = p->u.qam.fec_inner;
1224 c->modulation = p->u.qam.modulation;
1225 break;
5bfaadde 1226 case DVBV3_OFDM:
36bdbc3f
AP		 1227 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
1228
9a27e6a0
MCC		 1229 switch (p->u.ofdm.bandwidth) {
1230 case BANDWIDTH_10_MHZ:
1231 c->bandwidth_hz = 10000000;
1232 break;
1233 case BANDWIDTH_8_MHZ:
75b7f943 1234 c->bandwidth_hz = 8000000;
9a27e6a0
MCC		 1235 break;
1236 case BANDWIDTH_7_MHZ:
1237 c->bandwidth_hz = 7000000;
1238 break;
1239 case BANDWIDTH_6_MHZ:
1240 c->bandwidth_hz = 6000000;
1241 break;
1242 case BANDWIDTH_5_MHZ:
1243 c->bandwidth_hz = 5000000;
1244 break;
1245 case BANDWIDTH_1_712_MHZ:
1246 c->bandwidth_hz = 1712000;
1247 break;
1248 case BANDWIDTH_AUTO:
75b7f943 1249 c->bandwidth_hz = 0;
9a27e6a0
MCC		 1250 }
1251
ee33c525
ST		 1252 c->code_rate_HP = p->u.ofdm.code_rate_HP;
1253 c->code_rate_LP = p->u.ofdm.code_rate_LP;
1254 c->modulation = p->u.ofdm.constellation;
1255 c->transmission_mode = p->u.ofdm.transmission_mode;
1256 c->guard_interval = p->u.ofdm.guard_interval;
1257 c->hierarchy = p->u.ofdm.hierarchy_information;
1258 break;
5bfaadde 1259 case DVBV3_ATSC:
36bdbc3f 1260 dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__);
ee33c525 1261 c->modulation = p->u.vsb.modulation;
ca689488
MK		 1262 if (c->delivery_system == SYS_ATSCMH)
1263 break;
80a773c9
ST		 1264 if ((c->modulation == VSB_8) || (c->modulation == VSB_16))
1265 c->delivery_system = SYS_ATSC;
1266 else
1267 c->delivery_system = SYS_DVBC_ANNEX_B;
ee33c525 1268 break;
5bfaadde 1269 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1270 dev_err(fe->dvb->device,
1271 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1272 __func__, c->delivery_system);
5bfaadde 1273 return -EINVAL;
ee33c525 1274 }
5bfaadde
MCC		 1275
1276 return 0;
ee33c525
ST		 1277}
1278
d5748f10
ST		 1279/* Ensure the cached values are set correctly in the frontend
1280 * legacy tuning structures, for the advanced tuning API.
1281 */
2ea9a08d
MCC		 1282static int
1283dtv_property_legacy_params_sync(struct dvb_frontend *fe,
1284 const struct dtv_frontend_properties *c,
1285 struct dvb_frontend_parameters *p)
6b73eeaf 1286{
d5748f10
ST		 1287 p->frequency = c->frequency;
1288 p->inversion = c->inversion;
6b73eeaf 1289
5bfaadde
MCC		 1290 switch (dvbv3_type(c->delivery_system)) {
1291 case DVBV3_UNKNOWN:
36bdbc3f
AP		 1292 dev_err(fe->dvb->device,
1293 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1294 __func__, c->delivery_system);
5bfaadde
MCC		 1295 return -EINVAL;
1296 case DVBV3_QPSK:
36bdbc3f 1297 dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__);
d5748f10
ST		 1298 p->u.qpsk.symbol_rate = c->symbol_rate;
1299 p->u.qpsk.fec_inner = c->fec_inner;
1300 break;
5bfaadde 1301 case DVBV3_QAM:
36bdbc3f 1302 dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__);
d5748f10
ST		 1303 p->u.qam.symbol_rate = c->symbol_rate;
1304 p->u.qam.fec_inner = c->fec_inner;
1305 p->u.qam.modulation = c->modulation;
1306 break;
5bfaadde 1307 case DVBV3_OFDM:
36bdbc3f 1308 dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__);
9a27e6a0
MCC		 1309 switch (c->bandwidth_hz) {
1310 case 10000000:
1311 p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ;
1312 break;
1313 case 8000000:
75b7f943 1314 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
9a27e6a0
MCC		 1315 break;
1316 case 7000000:
1317 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
1318 break;
1319 case 6000000:
1320 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
1321 break;
1322 case 5000000:
1323 p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ;
1324 break;
1325 case 1712000:
1326 p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ;
1327 break;
1328 case 0:
1329 default:
75b7f943 1330 p->u.ofdm.bandwidth = BANDWIDTH_AUTO;
9a27e6a0 1331 }
d5748f10
ST		 1332 p->u.ofdm.code_rate_HP = c->code_rate_HP;
1333 p->u.ofdm.code_rate_LP = c->code_rate_LP;
1334 p->u.ofdm.constellation = c->modulation;
1335 p->u.ofdm.transmission_mode = c->transmission_mode;
1336 p->u.ofdm.guard_interval = c->guard_interval;
1337 p->u.ofdm.hierarchy_information = c->hierarchy;
1338 break;
5bfaadde 1339 case DVBV3_ATSC:
36bdbc3f 1340 dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__);
d5748f10
ST		 1341 p->u.vsb.modulation = c->modulation;
1342 break;
1343 }
5bfaadde 1344 return 0;
6b73eeaf
ST		 1345}
1346
a689e365
MCC		 1347/**
1348 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1349 * @fe: struct dvb_frontend pointer
1350 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1351 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1352 *
1353 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1354 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1355 * If p_out is not null, it will update the DVBv3 params pointed by it.
1356 */
1357static int dtv_get_frontend(struct dvb_frontend *fe,
2ea9a08d 1358 struct dtv_frontend_properties *c,
a689e365
MCC		 1359 struct dvb_frontend_parameters *p_out)
1360{
a689e365
MCC		 1361 int r;
1362
a689e365 1363 if (fe->ops.get_frontend) {
7c61d80a 1364 r = fe->ops.get_frontend(fe);
a689e365
MCC		 1365 if (unlikely(r < 0))
1366 return r;
7c61d80a 1367 if (p_out)
2ea9a08d 1368 dtv_property_legacy_params_sync(fe, c, p_out);
a689e365
MCC		 1369 return 0;
1370 }
1371
7c61d80a 1372 /* As everything is in cache, get_frontend fops are always supported */
b1e9a650 1373 return 0;
a689e365
MCC		 1374}
1375
16ef8def 1376static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5 1377 unsigned int cmd, void *parg);
16ef8def 1378static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 1379 unsigned int cmd, void *parg);
1380
072ce0c5 1381static int dtv_property_process_get(struct dvb_frontend *fe,
a689e365 1382 const struct dtv_frontend_properties *c,
072ce0c5 1383 struct dtv_property *tvp,
16ef8def 1384 struct file *file)
363429a0 1385{
5bfaadde 1386 int r, ncaps;
bfbf2dae 1387
363429a0 1388 switch(tvp->cmd) {
ba2780c7 1389 case DTV_ENUM_DELSYS:
5bfaadde 1390 ncaps = 0;
0123f29c 1391 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
5bfaadde
MCC		 1392 tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps];
1393 ncaps++;
1394 }
1395 tvp->u.buffer.len = ncaps;
ba2780c7 1396 break;
363429a0 1397 case DTV_FREQUENCY:
50727719 1398 tvp->u.data = c->frequency;
363429a0
ST		 1399 break;
1400 case DTV_MODULATION:
50727719 1401 tvp->u.data = c->modulation;
363429a0 1402 break;
75b7f943 1403 case DTV_BANDWIDTH_HZ:
50727719 1404 tvp->u.data = c->bandwidth_hz;
363429a0
ST		 1405 break;
1406 case DTV_INVERSION:
50727719 1407 tvp->u.data = c->inversion;
363429a0
ST		 1408 break;
1409 case DTV_SYMBOL_RATE:
50727719 1410 tvp->u.data = c->symbol_rate;
363429a0
ST		 1411 break;
1412 case DTV_INNER_FEC:
50727719 1413 tvp->u.data = c->fec_inner;
363429a0
ST		 1414 break;
1415 case DTV_PILOT:
50727719 1416 tvp->u.data = c->pilot;
363429a0
ST		 1417 break;
1418 case DTV_ROLLOFF:
50727719 1419 tvp->u.data = c->rolloff;
363429a0
ST		 1420 break;
1421 case DTV_DELIVERY_SYSTEM:
50727719 1422 tvp->u.data = c->delivery_system;
363429a0 1423 break;
363429a0 1424 case DTV_VOLTAGE:
50727719 1425 tvp->u.data = c->voltage;
363429a0
ST		 1426 break;
1427 case DTV_TONE:
50727719 1428 tvp->u.data = c->sectone;
363429a0 1429 break;
eacf8d8d
ST		 1430 case DTV_API_VERSION:
1431 tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR;
1432 break;
a4de91be 1433 case DTV_CODE_RATE_HP:
50727719 1434 tvp->u.data = c->code_rate_HP;
a4de91be
ST		 1435 break;
1436 case DTV_CODE_RATE_LP:
50727719 1437 tvp->u.data = c->code_rate_LP;
a4de91be 1438 break;
b87625f0 1439 case DTV_GUARD_INTERVAL:
50727719 1440 tvp->u.data = c->guard_interval;
b87625f0
ST		 1441 break;
1442 case DTV_TRANSMISSION_MODE:
50727719 1443 tvp->u.data = c->transmission_mode;
b87625f0 1444 break;
ef526f42 1445 case DTV_HIERARCHY:
50727719 1446 tvp->u.data = c->hierarchy;
ef526f42 1447 break;
224b6642
AP		 1448 case DTV_INTERLEAVING:
1449 tvp->u.data = c->interleaving;
1450 break;
b6e760f3
PB		 1451
1452 /* ISDB-T Support here */
1453 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1454 tvp->u.data = c->isdbt_partial_reception;
b6e760f3
PB		 1455 break;
1456 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1457 tvp->u.data = c->isdbt_sb_mode;
b6e760f3
PB		 1458 break;
1459 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1460 tvp->u.data = c->isdbt_sb_subchannel;
b6e760f3
PB		 1461 break;
1462 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1463 tvp->u.data = c->isdbt_sb_segment_idx;
b6e760f3
PB		 1464 break;
1465 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1466 tvp->u.data = c->isdbt_sb_segment_count;
b6e760f3 1467 break;
e7b7949a 1468 case DTV_ISDBT_LAYER_ENABLED:
50727719 1469 tvp->u.data = c->isdbt_layer_enabled;
e7b7949a 1470 break;
b6e760f3 1471 case DTV_ISDBT_LAYERA_FEC:
50727719 1472 tvp->u.data = c->layer[0].fec;
b6e760f3
PB		 1473 break;
1474 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1475 tvp->u.data = c->layer[0].modulation;
b6e760f3
PB		 1476 break;
1477 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1478 tvp->u.data = c->layer[0].segment_count;
b6e760f3
PB		 1479 break;
1480 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1481 tvp->u.data = c->layer[0].interleaving;
b6e760f3
PB		 1482 break;
1483 case DTV_ISDBT_LAYERB_FEC:
50727719 1484 tvp->u.data = c->layer[1].fec;
b6e760f3
PB		 1485 break;
1486 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1487 tvp->u.data = c->layer[1].modulation;
b6e760f3
PB		 1488 break;
1489 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1490 tvp->u.data = c->layer[1].segment_count;
b6e760f3
PB		 1491 break;
1492 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1493 tvp->u.data = c->layer[1].interleaving;
b6e760f3
PB		 1494 break;
1495 case DTV_ISDBT_LAYERC_FEC:
50727719 1496 tvp->u.data = c->layer[2].fec;
b6e760f3
PB		 1497 break;
1498 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1499 tvp->u.data = c->layer[2].modulation;
b6e760f3
PB		 1500 break;
1501 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1502 tvp->u.data = c->layer[2].segment_count;
b6e760f3
PB		 1503 break;
1504 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1505 tvp->u.data = c->layer[2].interleaving;
b6e760f3 1506 break;
287cefd0
EP		 1507
1508 /* Multistream support */
1509 case DTV_STREAM_ID:
1510 case DTV_DVBT2_PLP_ID_LEGACY:
1511 tvp->u.data = c->stream_id;
94d56ffa 1512 break;
ca689488
MK		 1513
1514 /* ATSC-MH */
1515 case DTV_ATSCMH_FIC_VER:
1516 tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver;
1517 break;
1518 case DTV_ATSCMH_PARADE_ID:
1519 tvp->u.data = fe->dtv_property_cache.atscmh_parade_id;
1520 break;
1521 case DTV_ATSCMH_NOG:
1522 tvp->u.data = fe->dtv_property_cache.atscmh_nog;
1523 break;
1524 case DTV_ATSCMH_TNOG:
1525 tvp->u.data = fe->dtv_property_cache.atscmh_tnog;
1526 break;
1527 case DTV_ATSCMH_SGN:
1528 tvp->u.data = fe->dtv_property_cache.atscmh_sgn;
1529 break;
1530 case DTV_ATSCMH_PRC:
1531 tvp->u.data = fe->dtv_property_cache.atscmh_prc;
1532 break;
1533 case DTV_ATSCMH_RS_FRAME_MODE:
1534 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode;
1535 break;
1536 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1537 tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble;
1538 break;
1539 case DTV_ATSCMH_RS_CODE_MODE_PRI:
1540 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri;
1541 break;
1542 case DTV_ATSCMH_RS_CODE_MODE_SEC:
1543 tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec;
1544 break;
1545 case DTV_ATSCMH_SCCC_BLOCK_MODE:
1546 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode;
1547 break;
1548 case DTV_ATSCMH_SCCC_CODE_MODE_A:
1549 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a;
1550 break;
1551 case DTV_ATSCMH_SCCC_CODE_MODE_B:
1552 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b;
1553 break;
1554 case DTV_ATSCMH_SCCC_CODE_MODE_C:
1555 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c;
1556 break;
1557 case DTV_ATSCMH_SCCC_CODE_MODE_D:
1558 tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d;
1559 break;
ca689488 1560
33eebec5
AP		 1561 case DTV_LNA:
1562 tvp->u.data = c->lna;
1563 break;
1564
7cd4ece5
MCC		 1565 /* Fill quality measures */
1566 case DTV_STAT_SIGNAL_STRENGTH:
1567 tvp->u.st = c->strength;
1568 break;
1569 case DTV_STAT_CNR:
1570 tvp->u.st = c->cnr;
1571 break;
1572 case DTV_STAT_PRE_ERROR_BIT_COUNT:
1573 tvp->u.st = c->pre_bit_error;
1574 break;
1575 case DTV_STAT_PRE_TOTAL_BIT_COUNT:
1576 tvp->u.st = c->pre_bit_count;
1577 break;
1578 case DTV_STAT_POST_ERROR_BIT_COUNT:
1579 tvp->u.st = c->post_bit_error;
1580 break;
1581 case DTV_STAT_POST_TOTAL_BIT_COUNT:
1582 tvp->u.st = c->post_bit_count;
1583 break;
1584 case DTV_STAT_ERROR_BLOCK_COUNT:
1585 tvp->u.st = c->block_error;
1586 break;
1587 case DTV_STAT_TOTAL_BLOCK_COUNT:
1588 tvp->u.st = c->block_count;
1589 break;
363429a0 1590 default:
94a93e5f
MCC		 1591 dev_dbg(fe->dvb->device,
1592 "%s: FE property %d doesn't exist\n",
1593 __func__, tvp->cmd);
aff8ab5c 1594 return -EINVAL;
363429a0
ST		 1595 }
1596
e23d9ae3
AO		 1597 /* Allow the frontend to override outgoing properties */
1598 if (fe->ops.get_property) {
1599 r = fe->ops.get_property(fe, tvp);
1600 if (r < 0)
1601 return r;
1602 }
1603
c29ebb64 1604 dtv_property_dump(fe, false, tvp);
639544d7 1605
aff8ab5c 1606 return 0;
363429a0
ST		 1607}
1608
5bfaadde
MCC		 1609static int dtv_set_frontend(struct dvb_frontend *fe);
1610
04be0f76
MCC		 1611static bool is_dvbv3_delsys(u32 delsys)
1612{
1613 bool status;
1614
1615 status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) ||
1616 (delsys == SYS_DVBS) || (delsys == SYS_ATSC);
1617
1618 return status;
1619}
1620
52dee392
MCC		 1621/**
1622 * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
1623 * @fe: struct frontend;
1624 * @delsys: DVBv5 type that will be used for emulation
1625 *
1626 * Provides emulation for delivery systems that are compatible with the old
1627 * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
1628 * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
1629 * parameters are compatible with DVB-S spec.
1630 */
1631static int emulate_delivery_system(struct dvb_frontend *fe, u32 delsys)
04be0f76 1632{
be431b16 1633 int i;
04be0f76 1634 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
04be0f76 1635
3626479e
MCC		 1636 c->delivery_system = delsys;
1637
04be0f76 1638 /*
52dee392 1639 * If the call is for ISDB-T, put it into full-seg, auto mode, TV
04be0f76 1640 */
52dee392
MCC		 1641 if (c->delivery_system == SYS_ISDBT) {
1642 dev_dbg(fe->dvb->device,
1643 "%s: Using defaults for SYS_ISDBT\n",
1644 __func__);
04be0f76 1645
52dee392
MCC		 1646 if (!c->bandwidth_hz)
1647 c->bandwidth_hz = 6000000;
1648
1649 c->isdbt_partial_reception = 0;
1650 c->isdbt_sb_mode = 0;
1651 c->isdbt_sb_subchannel = 0;
1652 c->isdbt_sb_segment_idx = 0;
1653 c->isdbt_sb_segment_count = 0;
1654 c->isdbt_layer_enabled = 7;
1655 for (i = 0; i < 3; i++) {
1656 c->layer[i].fec = FEC_AUTO;
1657 c->layer[i].modulation = QAM_AUTO;
1658 c->layer[i].interleaving = 0;
1659 c->layer[i].segment_count = 0;
04be0f76
MCC		 1660 }
1661 }
36bdbc3f 1662 dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n",
52dee392 1663 __func__, c->delivery_system);
9474c5e6 1664
04be0f76
MCC		 1665 return 0;
1666}
1667
52dee392
MCC		 1668/**
1669 * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
1670 * @fe: frontend struct
1671 * @desired_system: delivery system requested by the user
1672 *
1673 * A DVBv5 call know what's the desired system it wants. So, set it.
1674 *
1675 * There are, however, a few known issues with early DVBv5 applications that
1676 * are also handled by this logic:
1677 *
1678 * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
1679 * This is an API violation, but, as we don't want to break userspace,
1680 * convert it to the first supported delivery system.
1681 * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
1682 * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
1683 * ISDB-T provided backward compat with DVB-T.
1684 */
be431b16
MCC		 1685static int dvbv5_set_delivery_system(struct dvb_frontend *fe,
1686 u32 desired_system)
1687{
1688 int ncaps;
1689 u32 delsys = SYS_UNDEFINED;
1690 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1691 enum dvbv3_emulation_type type;
1692
1693 /*
1694 * It was reported that some old DVBv5 applications were
1695 * filling delivery_system with SYS_UNDEFINED. If this happens,
1696 * assume that the application wants to use the first supported
1697 * delivery system.
1698 */
52dee392
MCC		 1699 if (desired_system == SYS_UNDEFINED)
1700 desired_system = fe->ops.delsys[0];
be431b16
MCC		 1701
1702 /*
52dee392
MCC		 1703 * This is a DVBv5 call. So, it likely knows the supported
1704 * delivery systems. So, check if the desired delivery system is
1705 * supported
1706 */
be431b16 1707 ncaps = 0;
0123f29c 1708 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
be431b16
MCC		 1709 if (fe->ops.delsys[ncaps] == desired_system) {
1710 c->delivery_system = desired_system;
1711 dev_dbg(fe->dvb->device,
1712 "%s: Changing delivery system to %d\n",
1713 __func__, desired_system);
1714 return 0;
1715 }
1716 ncaps++;
1717 }
1718
1719 /*
52dee392
MCC		 1720 * The requested delivery system isn't supported. Maybe userspace
1721 * is requesting a DVBv3 compatible delivery system.
1722 *
1723 * The emulation only works if the desired system is one of the
1724 * delivery systems supported by DVBv3 API
be431b16 1725 */
be431b16
MCC		 1726 if (!is_dvbv3_delsys(desired_system)) {
1727 dev_dbg(fe->dvb->device,
52dee392
MCC		 1728 "%s: Delivery system %d not supported.\n",
1729 __func__, desired_system);
be431b16
MCC		 1730 return -EINVAL;
1731 }
1732
52dee392
MCC		 1733 type = dvbv3_type(desired_system);
1734
be431b16
MCC		 1735 /*
1736 * Get the last non-DVBv3 delivery system that has the same type
1737 * of the desired system
1738 */
1739 ncaps = 0;
0123f29c 1740 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392 1741 if (dvbv3_type(fe->ops.delsys[ncaps]) == type)
be431b16
MCC		 1742 delsys = fe->ops.delsys[ncaps];
1743 ncaps++;
1744 }
52dee392 1745
be431b16
MCC		 1746 /* There's nothing compatible with the desired delivery system */
1747 if (delsys == SYS_UNDEFINED) {
1748 dev_dbg(fe->dvb->device,
52dee392
MCC		 1749 "%s: Delivery system %d not supported on emulation mode.\n",
1750 __func__, desired_system);
be431b16
MCC		 1751 return -EINVAL;
1752 }
1753
52dee392
MCC		 1754 dev_dbg(fe->dvb->device,
1755 "%s: Using delivery system %d emulated as if it were %d\n",
1756 __func__, delsys, desired_system);
1757
1758 return emulate_delivery_system(fe, desired_system);
be431b16
MCC		 1759}
1760
52dee392
MCC		 1761/**
1762 * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
1763 * @fe: frontend struct
1764 *
1765 * A DVBv3 call doesn't know what's the desired system it wants. It also
1766 * doesn't allow to switch between different types. Due to that, userspace
1767 * should use DVBv5 instead.
1768 * However, in order to avoid breaking userspace API, limited backward
1769 * compatibility support is provided.
1770 *
1771 * There are some delivery systems that are incompatible with DVBv3 calls.
1772 *
1773 * This routine should work fine for frontends that support just one delivery
1774 * system.
1775 *
1776 * For frontends that support multiple frontends:
1777 * 1) It defaults to use the first supported delivery system. There's an
1778 * userspace application that allows changing it at runtime;
1779 *
1780 * 2) If the current delivery system is not compatible with DVBv3, it gets
1781 * the first one that it is compatible.
1782 *
1783 * NOTE: in order for this to work with applications like Kaffeine that
1784 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1785 * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
1786 * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
1787 * to DVB-S.
1788 */
be431b16
MCC		 1789static int dvbv3_set_delivery_system(struct dvb_frontend *fe)
1790{
1791 int ncaps;
be431b16
MCC		 1792 u32 delsys = SYS_UNDEFINED;
1793 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
be431b16
MCC		 1794
1795 /* If not set yet, defaults to the first supported delivery system */
1796 if (c->delivery_system == SYS_UNDEFINED)
1797 c->delivery_system = fe->ops.delsys[0];
1798
be431b16
MCC		 1799 /*
1800 * Trivial case: just use the current one, if it already a DVBv3
1801 * delivery system
1802 */
1803 if (is_dvbv3_delsys(c->delivery_system)) {
1804 dev_dbg(fe->dvb->device,
1805 "%s: Using delivery system to %d\n",
1806 __func__, c->delivery_system);
1807 return 0;
1808 }
1809
be431b16 1810 /*
52dee392
MCC		 1811 * Seek for the first delivery system that it is compatible with a
1812 * DVBv3 standard
be431b16
MCC		 1813 */
1814 ncaps = 0;
0123f29c 1815 while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) {
52dee392
MCC		 1816 if (dvbv3_type(fe->ops.delsys[ncaps]) != DVBV3_UNKNOWN) {
1817 delsys = fe->ops.delsys[ncaps];
be431b16
MCC		 1818 break;
1819 }
1820 ncaps++;
1821 }
1822 if (delsys == SYS_UNDEFINED) {
52dee392
MCC		 1823 dev_dbg(fe->dvb->device,
1824 "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
1825 __func__);
1826 return -EINVAL;
be431b16 1827 }
52dee392 1828 return emulate_delivery_system(fe, delsys);
be431b16
MCC		 1829}
1830
072ce0c5
MCC		 1831static int dtv_property_process_set(struct dvb_frontend *fe,
1832 struct dtv_property *tvp,
072ce0c5 1833 struct file *file)
6b73eeaf
ST		 1834{
1835 int r = 0;
50727719 1836 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
6b73eeaf 1837
bfbf2dae 1838 /* Allow the frontend to validate incoming properties */
aff8ab5c 1839 if (fe->ops.set_property) {
bfbf2dae 1840 r = fe->ops.set_property(fe, tvp);
aff8ab5c
AO		 1841 if (r < 0)
1842 return r;
1843 }
bfbf2dae 1844
c29ebb64
MCC		 1845 dtv_property_dump(fe, true, tvp);
1846
6b73eeaf 1847 switch(tvp->cmd) {
e7fee0f3 1848 case DTV_CLEAR:
5bfaadde
MCC		 1849 /*
1850 * Reset a cache of data specific to the frontend here. This does
6b73eeaf
ST		 1851 * not effect hardware.
1852 */
b6e760f3 1853 dvb_frontend_clear_cache(fe);
6b73eeaf 1854 break;
e7fee0f3 1855 case DTV_TUNE:
6b73eeaf 1856 /* interpret the cache of data, build either a traditional frontend
d5748f10
ST		 1857 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1858 * ioctl.
6b73eeaf 1859 */
50727719 1860 c->state = tvp->cmd;
36bdbc3f
AP		 1861 dev_dbg(fe->dvb->device, "%s: Finalised property cache\n",
1862 __func__);
d5748f10 1863
5bfaadde 1864 r = dtv_set_frontend(fe);
6b73eeaf 1865 break;
363429a0 1866 case DTV_FREQUENCY:
50727719 1867 c->frequency = tvp->u.data;
6b73eeaf 1868 break;
363429a0 1869 case DTV_MODULATION:
50727719 1870 c->modulation = tvp->u.data;
6b73eeaf 1871 break;
75b7f943 1872 case DTV_BANDWIDTH_HZ:
50727719 1873 c->bandwidth_hz = tvp->u.data;
6b73eeaf 1874 break;
363429a0 1875 case DTV_INVERSION:
50727719 1876 c->inversion = tvp->u.data;
6b73eeaf 1877 break;
363429a0 1878 case DTV_SYMBOL_RATE:
50727719 1879 c->symbol_rate = tvp->u.data;
6b73eeaf 1880 break;
363429a0 1881 case DTV_INNER_FEC:
50727719 1882 c->fec_inner = tvp->u.data;
6b73eeaf 1883 break;
363429a0 1884 case DTV_PILOT:
50727719 1885 c->pilot = tvp->u.data;
6b73eeaf 1886 break;
363429a0 1887 case DTV_ROLLOFF:
50727719 1888 c->rolloff = tvp->u.data;
6b73eeaf 1889 break;
363429a0 1890 case DTV_DELIVERY_SYSTEM:
be431b16 1891 r = dvbv5_set_delivery_system(fe, tvp->u.data);
6b73eeaf 1892 break;
363429a0 1893 case DTV_VOLTAGE:
50727719 1894 c->voltage = tvp->u.data;
16ef8def 1895 r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE,
50727719 1896 (void *)c->voltage);
13c97bf5 1897 break;
363429a0 1898 case DTV_TONE:
50727719 1899 c->sectone = tvp->u.data;
16ef8def 1900 r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE,
50727719 1901 (void *)c->sectone);
13c97bf5 1902 break;
a4de91be 1903 case DTV_CODE_RATE_HP:
50727719 1904 c->code_rate_HP = tvp->u.data;
a4de91be
ST		 1905 break;
1906 case DTV_CODE_RATE_LP:
50727719 1907 c->code_rate_LP = tvp->u.data;
a4de91be 1908 break;
b87625f0 1909 case DTV_GUARD_INTERVAL:
50727719 1910 c->guard_interval = tvp->u.data;
b87625f0
ST		 1911 break;
1912 case DTV_TRANSMISSION_MODE:
50727719 1913 c->transmission_mode = tvp->u.data;
b87625f0 1914 break;
ef526f42 1915 case DTV_HIERARCHY:
50727719 1916 c->hierarchy = tvp->u.data;
ef526f42 1917 break;
224b6642
AP		 1918 case DTV_INTERLEAVING:
1919 c->interleaving = tvp->u.data;
1920 break;
b6e760f3
PB		 1921
1922 /* ISDB-T Support here */
1923 case DTV_ISDBT_PARTIAL_RECEPTION:
50727719 1924 c->isdbt_partial_reception = tvp->u.data;
b6e760f3
PB		 1925 break;
1926 case DTV_ISDBT_SOUND_BROADCASTING:
50727719 1927 c->isdbt_sb_mode = tvp->u.data;
b6e760f3
PB		 1928 break;
1929 case DTV_ISDBT_SB_SUBCHANNEL_ID:
50727719 1930 c->isdbt_sb_subchannel = tvp->u.data;
b6e760f3
PB		 1931 break;
1932 case DTV_ISDBT_SB_SEGMENT_IDX:
50727719 1933 c->isdbt_sb_segment_idx = tvp->u.data;
b6e760f3
PB		 1934 break;
1935 case DTV_ISDBT_SB_SEGMENT_COUNT:
50727719 1936 c->isdbt_sb_segment_count = tvp->u.data;
b6e760f3 1937 break;
e7b7949a 1938 case DTV_ISDBT_LAYER_ENABLED:
50727719 1939 c->isdbt_layer_enabled = tvp->u.data;
e7b7949a 1940 break;
b6e760f3 1941 case DTV_ISDBT_LAYERA_FEC:
50727719 1942 c->layer[0].fec = tvp->u.data;
b6e760f3
PB		 1943 break;
1944 case DTV_ISDBT_LAYERA_MODULATION:
50727719 1945 c->layer[0].modulation = tvp->u.data;
b6e760f3
PB		 1946 break;
1947 case DTV_ISDBT_LAYERA_SEGMENT_COUNT:
50727719 1948 c->layer[0].segment_count = tvp->u.data;
b6e760f3
PB		 1949 break;
1950 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING:
50727719 1951 c->layer[0].interleaving = tvp->u.data;
b6e760f3
PB		 1952 break;
1953 case DTV_ISDBT_LAYERB_FEC:
50727719 1954 c->layer[1].fec = tvp->u.data;
b6e760f3
PB		 1955 break;
1956 case DTV_ISDBT_LAYERB_MODULATION:
50727719 1957 c->layer[1].modulation = tvp->u.data;
b6e760f3
PB		 1958 break;
1959 case DTV_ISDBT_LAYERB_SEGMENT_COUNT:
50727719 1960 c->layer[1].segment_count = tvp->u.data;
b6e760f3
PB		 1961 break;
1962 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING:
50727719 1963 c->layer[1].interleaving = tvp->u.data;
b6e760f3
PB		 1964 break;
1965 case DTV_ISDBT_LAYERC_FEC:
50727719 1966 c->layer[2].fec = tvp->u.data;
b6e760f3
PB		 1967 break;
1968 case DTV_ISDBT_LAYERC_MODULATION:
50727719 1969 c->layer[2].modulation = tvp->u.data;
b6e760f3
PB		 1970 break;
1971 case DTV_ISDBT_LAYERC_SEGMENT_COUNT:
50727719 1972 c->layer[2].segment_count = tvp->u.data;
b6e760f3
PB		 1973 break;
1974 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING:
50727719 1975 c->layer[2].interleaving = tvp->u.data;
b6e760f3 1976 break;
287cefd0
EP		 1977
1978 /* Multistream support */
1979 case DTV_STREAM_ID:
1980 case DTV_DVBT2_PLP_ID_LEGACY:
1981 c->stream_id = tvp->u.data;
98293ef3 1982 break;
ca689488
MK		 1983
1984 /* ATSC-MH */
1985 case DTV_ATSCMH_PARADE_ID:
1986 fe->dtv_property_cache.atscmh_parade_id = tvp->u.data;
1987 break;
1988 case DTV_ATSCMH_RS_FRAME_ENSEMBLE:
1989 fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data;
1990 break;
1991
33eebec5
AP		 1992 case DTV_LNA:
1993 c->lna = tvp->u.data;
1994 if (fe->ops.set_lna)
1995 r = fe->ops.set_lna(fe);
e6876692
MCC		 1996 if (r < 0)
1997 c->lna = LNA_AUTO;
33eebec5
AP		 1998 break;
1999
363429a0 2000 default:
aff8ab5c 2001 return -EINVAL;
6b73eeaf
ST		 2002 }
2003
13c97bf5 2004 return r;
6b73eeaf
ST		 2005}
2006
16ef8def 2007static int dvb_frontend_ioctl(struct file *file,
1da177e4
LT		 2008 unsigned int cmd, void *parg)
2009{
2010 struct dvb_device *dvbdev = file->private_data;
2011 struct dvb_frontend *fe = dvbdev->priv;
50727719 2012 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
0c53c70f 2013 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ac897586 2014 int err = -EOPNOTSUPP;
1da177e4 2015
36bdbc3f 2016 dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd));
6ae23224
JL		 2017 if (down_interruptible(&fepriv->sem))
2018 return -ERESTARTSYS;
2019
18ed2860 2020 if (fe->exit != DVB_FE_NO_EXIT) {
6ae23224 2021 up(&fepriv->sem);
1da177e4 2022 return -ENODEV;
6ae23224 2023 }
1da177e4
LT		 2024
2025 if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
2026 (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
6ae23224
JL		 2027 cmd == FE_DISEQC_RECV_SLAVE_REPLY)) {
2028 up(&fepriv->sem);
1da177e4 2029 return -EPERM;
6ae23224 2030 }
1da177e4 2031
13c97bf5 2032 if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY))
16ef8def 2033 err = dvb_frontend_ioctl_properties(file, cmd, parg);
4dd88bec 2034 else {
50727719 2035 c->state = DTV_UNDEFINED;
16ef8def 2036 err = dvb_frontend_ioctl_legacy(file, cmd, parg);
4dd88bec 2037 }
13c97bf5
ST		 2038
2039 up(&fepriv->sem);
2040 return err;
2041}
2042
16ef8def 2043static int dvb_frontend_ioctl_properties(struct file *file,
13c97bf5
ST		 2044 unsigned int cmd, void *parg)
2045{
2046 struct dvb_device *dvbdev = file->private_data;
2047 struct dvb_frontend *fe = dvbdev->priv;
51dcb19a 2048 struct dvb_frontend_private *fepriv = fe->frontend_priv;
50727719 2049 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
e6f9ec86 2050 int err = 0;
e7fee0f3 2051
71d1b2be 2052 struct dtv_properties *tvps = parg;
e7fee0f3
ST		 2053 struct dtv_property *tvp = NULL;
2054 int i;
13c97bf5 2055
36bdbc3f 2056 dev_dbg(fe->dvb->device, "%s:\n", __func__);
13c97bf5 2057
71d1b2be 2058 if (cmd == FE_SET_PROPERTY) {
36bdbc3f
AP		 2059 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
2060 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
e7fee0f3
ST		 2061
2062 /* Put an arbitrary limit on the number of messages that can
2063 * be sent at once */
6068f506 2064 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
e7fee0f3
ST		 2065 return -EINVAL;
2066
6e3924aa 2067 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
e7fee0f3
ST		 2068 if (!tvp) {
2069 err = -ENOMEM;
2070 goto out;
6b73eeaf
ST		 2071 }
2072
71d1b2be
MCC		 2073 if (copy_from_user(tvp, (void __user *)tvps->props,
2074 tvps->num * sizeof(struct dtv_property))) {
e7fee0f3
ST		 2075 err = -EFAULT;
2076 goto out;
2077 }
2078
d48cb402 2079 for (i = 0; i < tvps->num; i++) {
aff8ab5c
AO		 2080 err = dtv_property_process_set(fe, tvp + i, file);
2081 if (err < 0)
2082 goto out;
2083 (tvp + i)->result = err;
d48cb402 2084 }
e7fee0f3 2085
50727719 2086 if (c->state == DTV_TUNE)
36bdbc3f 2087 dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
bfbf2dae 2088
71d1b2be 2089 } else if (cmd == FE_GET_PROPERTY) {
36bdbc3f
AP		 2090 dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
2091 dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
363429a0
ST		 2092
2093 /* Put an arbitrary limit on the number of messages that can
2094 * be sent at once */
6068f506 2095 if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
363429a0
ST		 2096 return -EINVAL;
2097
6e3924aa 2098 tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL);
363429a0
ST		 2099 if (!tvp) {
2100 err = -ENOMEM;
2101 goto out;
2102 }
2103
71d1b2be
MCC		 2104 if (copy_from_user(tvp, (void __user *)tvps->props,
2105 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2106 err = -EFAULT;
2107 goto out;
2108 }
2109
a689e365
MCC		 2110 /*
2111 * Fills the cache out struct with the cache contents, plus
51dcb19a
MCC		 2112 * the data retrieved from get_frontend, if the frontend
2113 * is not idle. Otherwise, returns the cached content
a689e365 2114 */
51dcb19a 2115 if (fepriv->state != FESTATE_IDLE) {
2ea9a08d 2116 err = dtv_get_frontend(fe, c, NULL);
51dcb19a
MCC		 2117 if (err < 0)
2118 goto out;
2119 }
d48cb402 2120 for (i = 0; i < tvps->num; i++) {
7c61d80a 2121 err = dtv_property_process_get(fe, c, tvp + i, file);
aff8ab5c
AO		 2122 if (err < 0)
2123 goto out;
2124 (tvp + i)->result = err;
d48cb402 2125 }
363429a0 2126
71d1b2be
MCC		 2127 if (copy_to_user((void __user *)tvps->props, tvp,
2128 tvps->num * sizeof(struct dtv_property))) {
363429a0
ST		 2129 err = -EFAULT;
2130 goto out;
2131 }
2132
363429a0 2133 } else
ac897586 2134 err = -EOPNOTSUPP;
363429a0 2135
e7fee0f3
ST		 2136out:
2137 kfree(tvp);
13c97bf5
ST		 2138 return err;
2139}
2140
5bfaadde 2141static int dtv_set_frontend(struct dvb_frontend *fe)
9682cea2 2142{
9682cea2
MCC		 2143 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2144 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
2145 struct dvb_frontend_tune_settings fetunesettings;
5bfaadde 2146 u32 rolloff = 0;
9682cea2 2147
5bfaadde
MCC		 2148 if (dvb_frontend_check_parameters(fe) < 0)
2149 return -EINVAL;
9682cea2 2150
556a0442
CR		 2151 /*
2152 * Initialize output parameters to match the values given by
2153 * the user. FE_SET_FRONTEND triggers an initial frontend event
2154 * with status = 0, which copies output parameters to userspace.
2155 */
2ea9a08d 2156 dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out);
556a0442 2157
5bfaadde
MCC		 2158 /*
2159 * Be sure that the bandwidth will be filled for all
2160 * non-satellite systems, as tuners need to know what
2161 * low pass/Nyquist half filter should be applied, in
2162 * order to avoid inter-channel noise.
2163 *
2164 * ISDB-T and DVB-T/T2 already sets bandwidth.
2165 * ATSC and DVB-C don't set, so, the core should fill it.
2166 *
2167 * On DVB-C Annex A and C, the bandwidth is a function of
2168 * the roll-off and symbol rate. Annex B defines different
2169 * roll-off factors depending on the modulation. Fortunately,
2170 * Annex B is only used with 6MHz, so there's no need to
2171 * calculate it.
2172 *
2173 * While not officially supported, a side effect of handling it at
2174 * the cache level is that a program could retrieve the bandwidth
2175 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
2176 */
2177 switch (c->delivery_system) {
2178 case SYS_ATSC:
2179 case SYS_DVBC_ANNEX_B:
2180 c->bandwidth_hz = 6000000;
2181 break;
2182 case SYS_DVBC_ANNEX_A:
2183 rolloff = 115;
2184 break;
2185 case SYS_DVBC_ANNEX_C:
2186 rolloff = 113;
2187 break;
c623ed63
MCC		 2188 case SYS_DVBS:
2189 case SYS_TURBO:
8e281faf 2190 case SYS_ISDBS:
c623ed63
MCC		 2191 rolloff = 135;
2192 break;
2193 case SYS_DVBS2:
2194 switch (c->rolloff) {
2195 case ROLLOFF_20:
2196 rolloff = 120;
2197 break;
2198 case ROLLOFF_25:
2199 rolloff = 125;
2200 break;
2201 default:
2202 case ROLLOFF_35:
2203 rolloff = 135;
2204 }
2205 break;
5bfaadde
MCC		 2206 default:
2207 break;
2208 }
2209 if (rolloff)
2a80f296 2210 c->bandwidth_hz = mult_frac(c->symbol_rate, rolloff, 100);
9682cea2
MCC		 2211
2212 /* force auto frequency inversion if requested */
5bfaadde 2213 if (dvb_force_auto_inversion)
9682cea2 2214 c->inversion = INVERSION_AUTO;
5bfaadde
MCC		 2215
2216 /*
2217 * without hierarchical coding code_rate_LP is irrelevant,
2218 * so we tolerate the otherwise invalid FEC_NONE setting
2219 */
2220 if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE)
2221 c->code_rate_LP = FEC_AUTO;
9682cea2
MCC		 2222
2223 /* get frontend-specific tuning settings */
5bfaadde 2224 memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings));
9682cea2
MCC		 2225 if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) {
2226 fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000;
2227 fepriv->max_drift = fetunesettings.max_drift;
2228 fepriv->step_size = fetunesettings.step_size;
2229 } else {
2230 /* default values */
5bfaadde 2231 switch (c->delivery_system) {
910a5f2e
MCC		 2232 case SYS_DVBS:
2233 case SYS_DVBS2:
2234 case SYS_ISDBS:
2235 case SYS_TURBO:
5bfaadde
MCC		 2236 case SYS_DVBC_ANNEX_A:
2237 case SYS_DVBC_ANNEX_C:
2238 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2239 fepriv->step_size = c->symbol_rate / 16000;
2240 fepriv->max_drift = c->symbol_rate / 2000;
2241 break;
5bfaadde
MCC		 2242 case SYS_DVBT:
2243 case SYS_DVBT2:
2244 case SYS_ISDBT:
224b6642 2245 case SYS_DTMB:
5bfaadde 2246 fepriv->min_delay = HZ / 20;
9682cea2
MCC		 2247 fepriv->step_size = fe->ops.info.frequency_stepsize * 2;
2248 fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
2249 break;
5bfaadde
MCC		 2250 default:
2251 /*
2252 * FIXME: This sounds wrong! if freqency_stepsize is
2253 * defined by the frontend, why not use it???
2254 */
2255 fepriv->min_delay = HZ / 20;
2256 fepriv->step_size = 0; /* no zigzag */
9682cea2
MCC		 2257 fepriv->max_drift = 0;
2258 break;
2259 }
2260 }
2261 if (dvb_override_tune_delay > 0)
2262 fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000;
2263
2264 fepriv->state = FESTATE_RETUNE;
2265
2266 /* Request the search algorithm to search */
2267 fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
2268
2269 dvb_frontend_clear_events(fe);
2270 dvb_frontend_add_event(fe, 0);
2271 dvb_frontend_wakeup(fe);
2272 fepriv->status = 0;
2273
2274 return 0;
2275}
2276
2277
16ef8def 2278static int dvb_frontend_ioctl_legacy(struct file *file,
13c97bf5
ST		 2279 unsigned int cmd, void *parg)
2280{
2281 struct dvb_device *dvbdev = file->private_data;
2282 struct dvb_frontend *fe = dvbdev->priv;
2283 struct dvb_frontend_private *fepriv = fe->frontend_priv;
5bfaadde 2284 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
ac897586 2285 int err = -EOPNOTSUPP;
13c97bf5 2286
1da177e4
LT		 2287 switch (cmd) {
2288 case FE_GET_INFO: {
0c53c70f 2289 struct dvb_frontend_info* info = parg;
9474c5e6 2290
dea74869 2291 memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info));
2030c032 2292 dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max);
1da177e4 2293
5bfaadde
MCC		 2294 /*
2295 * Associate the 4 delivery systems supported by DVBv3
2296 * API with their DVBv5 counterpart. For the other standards,
2297 * use the closest type, assuming that it would hopefully
2298 * work with a DVBv3 application.
2299 * It should be noticed that, on multi-frontend devices with
2300 * different types (terrestrial and cable, for example),
2301 * a pure DVBv3 application won't be able to use all delivery
2302 * systems. Yet, changing the DVBv5 cache to the other delivery
2303 * system should be enough for making it work.
2304 */
2305 switch (dvbv3_type(c->delivery_system)) {
2306 case DVBV3_QPSK:
9474c5e6 2307 info->type = FE_QPSK;
5bfaadde
MCC		 2308 break;
2309 case DVBV3_ATSC:
9474c5e6 2310 info->type = FE_ATSC;
5bfaadde
MCC		 2311 break;
2312 case DVBV3_QAM:
9474c5e6 2313 info->type = FE_QAM;
5bfaadde
MCC		 2314 break;
2315 case DVBV3_OFDM:
9474c5e6 2316 info->type = FE_OFDM;
5bfaadde
MCC		 2317 break;
2318 default:
36bdbc3f
AP		 2319 dev_err(fe->dvb->device,
2320 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
2321 __func__, c->delivery_system);
5bfaadde
MCC		 2322 fe->ops.info.type = FE_OFDM;
2323 }
36bdbc3f
AP		 2324 dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n",
2325 __func__, c->delivery_system, fe->ops.info.type);
5bfaadde 2326
c9d57de6
MP		 2327 /* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */
2328 if (!(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT))
2329 info->caps |= FE_CAN_INVERSION_AUTO;
1da177e4
LT		 2330 err = 0;
2331 break;
2332 }
2333
6757ccc5 2334 case FE_READ_STATUS: {
0df289a2 2335 enum fe_status *status = parg;
6757ccc5 2336
25985edc 2337 /* if retune was requested but hasn't occurred yet, prevent
6757ccc5 2338 * that user get signal state from previous tuning */
01886255
JG		 2339 if (fepriv->state == FESTATE_RETUNE ||
2340 fepriv->state == FESTATE_ERROR) {
6757ccc5
PB		 2341 err=0;
2342 *status = 0;
2343 break;
2344 }
2345
dea74869
PB		 2346 if (fe->ops.read_status)
2347 err = fe->ops.read_status(fe, status);
1da177e4 2348 break;
6757ccc5 2349 }
48caa6f1 2350
1da177e4 2351 case FE_READ_BER:
48caa6f1
AP		 2352 if (fe->ops.read_ber) {
2353 if (fepriv->thread)
2354 err = fe->ops.read_ber(fe, (__u32 *) parg);
2355 else
2356 err = -EAGAIN;
2357 }
1da177e4
LT		 2358 break;
2359
2360 case FE_READ_SIGNAL_STRENGTH:
48caa6f1
AP		 2361 if (fe->ops.read_signal_strength) {
2362 if (fepriv->thread)
2363 err = fe->ops.read_signal_strength(fe, (__u16 *) parg);
2364 else
2365 err = -EAGAIN;
2366 }
1da177e4
LT		 2367 break;
2368
2369 case FE_READ_SNR:
48caa6f1
AP		 2370 if (fe->ops.read_snr) {
2371 if (fepriv->thread)
2372 err = fe->ops.read_snr(fe, (__u16 *) parg);
2373 else
2374 err = -EAGAIN;
2375 }
1da177e4
LT		 2376 break;
2377
2378 case FE_READ_UNCORRECTED_BLOCKS:
48caa6f1
AP		 2379 if (fe->ops.read_ucblocks) {
2380 if (fepriv->thread)
2381 err = fe->ops.read_ucblocks(fe, (__u32 *) parg);
2382 else
2383 err = -EAGAIN;
2384 }
1da177e4
LT		 2385 break;
2386
1da177e4 2387 case FE_DISEQC_RESET_OVERLOAD:
dea74869
PB		 2388 if (fe->ops.diseqc_reset_overload) {
2389 err = fe->ops.diseqc_reset_overload(fe);
1da177e4
LT		 2390 fepriv->state = FESTATE_DISEQC;
2391 fepriv->status = 0;
2392 }
2393 break;
2394
2395 case FE_DISEQC_SEND_MASTER_CMD:
dea74869 2396 if (fe->ops.diseqc_send_master_cmd) {
8d7e5063
DC		 2397 struct dvb_diseqc_master_cmd *cmd = parg;
2398
2399 if (cmd->msg_len > sizeof(cmd->msg)) {
2400 err = -EINVAL;
2401 break;
2402 }
2403 err = fe->ops.diseqc_send_master_cmd(fe, cmd);
1da177e4
LT		 2404 fepriv->state = FESTATE_DISEQC;
2405 fepriv->status = 0;
2406 }
2407 break;
2408
2409 case FE_DISEQC_SEND_BURST:
dea74869 2410 if (fe->ops.diseqc_send_burst) {
0df289a2
MCC		 2411 err = fe->ops.diseqc_send_burst(fe,
2412 (enum fe_sec_mini_cmd)parg);
1da177e4
LT		 2413 fepriv->state = FESTATE_DISEQC;
2414 fepriv->status = 0;
2415 }
2416 break;
2417
2418 case FE_SET_TONE:
dea74869 2419 if (fe->ops.set_tone) {
0df289a2
MCC		 2420 err = fe->ops.set_tone(fe,
2421 (enum fe_sec_tone_mode)parg);
2422 fepriv->tone = (enum fe_sec_tone_mode)parg;
1da177e4
LT		 2423 fepriv->state = FESTATE_DISEQC;
2424 fepriv->status = 0;
2425 }
2426 break;
2427
2428 case FE_SET_VOLTAGE:
dea74869 2429 if (fe->ops.set_voltage) {
0df289a2
MCC		 2430 err = fe->ops.set_voltage(fe,
2431 (enum fe_sec_voltage)parg);
2432 fepriv->voltage = (enum fe_sec_voltage)parg;
1da177e4
LT		 2433 fepriv->state = FESTATE_DISEQC;
2434 fepriv->status = 0;
2435 }
2436 break;
2437
2438 case FE_DISHNETWORK_SEND_LEGACY_CMD:
dea74869 2439 if (fe->ops.dishnetwork_send_legacy_command) {
0df289a2
MCC		 2440 err = fe->ops.dishnetwork_send_legacy_command(fe,
2441 (unsigned long)parg);
1da177e4
LT		 2442 fepriv->state = FESTATE_DISEQC;
2443 fepriv->status = 0;
dea74869 2444 } else if (fe->ops.set_voltage) {
83b75b04
N		 2445 /*
2446 * NOTE: This is a fallback condition. Some frontends
2447 * (stv0299 for instance) take longer than 8msec to
2448 * respond to a set_voltage command. Those switches
2449 * need custom routines to switch properly. For all
2030c032 2450 * other frontends, the following should work ok.
83b75b04
N		 2451 * Dish network legacy switches (as used by Dish500)
2452 * are controlled by sending 9-bit command words
2453 * spaced 8msec apart.
25985edc 2454 * the actual command word is switch/port dependent
83b75b04
N		 2455 * so it is up to the userspace application to send
2456 * the right command.
2457 * The command must always start with a '0' after
2458 * initialization, so parg is 8 bits and does not
2459 * include the initialization or start bit
2460 */
c6eb8eaf 2461 unsigned long swcmd = ((unsigned long) parg) << 1;
9056a23b
TR		 2462 ktime_t nexttime;
2463 ktime_t tv[10];
83b75b04
N		 2464 int i;
2465 u8 last = 1;
2466 if (dvb_frontend_debug)
c6eb8eaf 2467 printk("%s switch command: 0x%04lx\n", __func__, swcmd);
6b3f9998 2468 nexttime = ktime_get_boottime();
83b75b04 2469 if (dvb_frontend_debug)
b9b1b3a8 2470 tv[0] = nexttime;
83b75b04
N		 2471 /* before sending a command, initialize by sending
2472 * a 32ms 18V to the switch
2473 */
dea74869 2474 fe->ops.set_voltage(fe, SEC_VOLTAGE_18);
83b75b04
N		 2475 dvb_frontend_sleep_until(&nexttime, 32000);
2476
2477 for (i = 0; i < 9; i++) {
2478 if (dvb_frontend_debug)
6b3f9998 2479 tv[i+1] = ktime_get_boottime();
c6eb8eaf 2480 if ((swcmd & 0x01) != last) {
83b75b04 2481 /* set voltage to (last ? 13V : 18V) */
dea74869 2482 fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18);
83b75b04
N		 2483 last = (last) ? 0 : 1;
2484 }
c6eb8eaf 2485 swcmd = swcmd >> 1;
83b75b04
N		 2486 if (i != 8)
2487 dvb_frontend_sleep_until(&nexttime, 8000);
2488 }
2489 if (dvb_frontend_debug) {
2490 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
46b4f7c1 2491 __func__, fe->dvb->num);
83b75b04 2492 for (i = 1; i < 10; i++)
9056a23b
TR		 2493 printk("%d: %d\n", i,
2494 (int) ktime_us_delta(tv[i], tv[i-1]));
83b75b04
N		 2495 }
2496 err = 0;
2497 fepriv->state = FESTATE_DISEQC;
2498 fepriv->status = 0;
1da177e4
LT		 2499 }
2500 break;
2501
2502 case FE_DISEQC_RECV_SLAVE_REPLY:
dea74869
PB		 2503 if (fe->ops.diseqc_recv_slave_reply)
2504 err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg);
1da177e4
LT		 2505 break;
2506
2507 case FE_ENABLE_HIGH_LNB_VOLTAGE:
dea74869
PB		 2508 if (fe->ops.enable_high_lnb_voltage)
2509 err = fe->ops.enable_high_lnb_voltage(fe, (long) parg);
1da177e4
LT		 2510 break;
2511
9682cea2 2512 case FE_SET_FRONTEND:
be431b16 2513 err = dvbv3_set_delivery_system(fe);
04be0f76
MCC		 2514 if (err)
2515 break;
2516
e399ce77 2517 err = dtv_property_cache_sync(fe, c, parg);
5bfaadde
MCC		 2518 if (err)
2519 break;
2520 err = dtv_set_frontend(fe);
1da177e4 2521 break;
1da177e4
LT		 2522 case FE_GET_EVENT:
2523 err = dvb_frontend_get_event (fe, parg, file->f_flags);
2524 break;
2525
2526 case FE_GET_FRONTEND:
2ea9a08d 2527 err = dtv_get_frontend(fe, c, parg);
1da177e4 2528 break;
36cb557a
AQ		 2529
2530 case FE_SET_FRONTEND_TUNE_MODE:
e18828e4 2531 fepriv->tune_mode_flags = (unsigned long) parg;
1b172e0c 2532 err = 0;
36cb557a 2533 break;
c2c1b415 2534 }
1da177e4 2535
1da177e4
LT		 2536 return err;
2537}
2538
6b73eeaf 2539
1da177e4
LT		 2540static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait)
2541{
2542 struct dvb_device *dvbdev = file->private_data;
2543 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2544 struct dvb_frontend_private *fepriv = fe->frontend_priv;
1da177e4 2545
36bdbc3f 2546 dev_dbg_ratelimited(fe->dvb->device, "%s:\n", __func__);
1da177e4
LT		 2547
2548 poll_wait (file, &fepriv->events.wait_queue, wait);
2549
2550 if (fepriv->events.eventw != fepriv->events.eventr)
2551 return (POLLIN | POLLRDNORM | POLLPRI);
2552
2553 return 0;
2554}
2555
2556static int dvb_frontend_open(struct inode *inode, struct file *file)
2557{
2558 struct dvb_device *dvbdev = file->private_data;
2559 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2560 struct dvb_frontend_private *fepriv = fe->frontend_priv;
59b1842d 2561 struct dvb_adapter *adapter = fe->dvb;
1da177e4
LT		 2562 int ret;
2563
36bdbc3f 2564 dev_dbg(fe->dvb->device, "%s:\n", __func__);
18ed2860 2565 if (fe->exit == DVB_FE_DEVICE_REMOVED)
e36309f5 2566 return -ENODEV;
1da177e4 2567
59b1842d
DB		 2568 if (adapter->mfe_shared) {
2569 mutex_lock (&adapter->mfe_lock);
6594690b
DB		 2570
2571 if (adapter->mfe_dvbdev == NULL)
2572 adapter->mfe_dvbdev = dvbdev;
2573
2574 else if (adapter->mfe_dvbdev != dvbdev) {
2575 struct dvb_device
2576 *mfedev = adapter->mfe_dvbdev;
2577 struct dvb_frontend
2578 *mfe = mfedev->priv;
2579 struct dvb_frontend_private
2580 *mfepriv = mfe->frontend_priv;
2581 int mferetry = (dvb_mfe_wait_time << 1);
2582
2583 mutex_unlock (&adapter->mfe_lock);
2584 while (mferetry-- && (mfedev->users != -1 ||
2585 mfepriv->thread != NULL)) {
2586 if(msleep_interruptible(500)) {
2587 if(signal_pending(current))
2588 return -EINTR;
59b1842d 2589 }
6594690b
DB		 2590 }
2591
2592 mutex_lock (&adapter->mfe_lock);
2593 if(adapter->mfe_dvbdev != dvbdev) {
59b1842d
DB		 2594 mfedev = adapter->mfe_dvbdev;
2595 mfe = mfedev->priv;
2596 mfepriv = mfe->frontend_priv;
6594690b
DB		 2597 if (mfedev->users != -1 ||
2598 mfepriv->thread != NULL) {
2599 mutex_unlock (&adapter->mfe_lock);
2600 return -EBUSY;
59b1842d 2601 }
6594690b 2602 adapter->mfe_dvbdev = dvbdev;
59b1842d 2603 }
59b1842d
DB		 2604 }
2605 }
2606
48136e1e
OE		 2607 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) {
2608 if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0)
59b1842d 2609 goto err0;
2d196931
DH		 2610
2611 /* If we took control of the bus, we need to force
2612 reinitialization. This is because many ts_bus_ctrl()
2613 functions strobe the RESET pin on the demod, and if the
2614 frontend thread already exists then the dvb_init() routine
2615 won't get called (which is what usually does initial
2616 register configuration). */
2617 fepriv->reinitialise = 1;
ba7e6f3e
ST		 2618 }
2619
48136e1e
OE		 2620 if ((ret = dvb_generic_open (inode, file)) < 0)
2621 goto err1;
04c56d0e 2622
48136e1e 2623 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
04c56d0e
AQ		 2624 /* normal tune mode when opened R/W */
2625 fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT;
2626 fepriv->tone = -1;
2627 fepriv->voltage = -1;
2628
1da177e4
LT		 2629 ret = dvb_frontend_start (fe);
2630 if (ret)
48136e1e 2631 goto err2;
1da177e4
LT		 2632
2633 /* empty event queue */
2634 fepriv->events.eventr = fepriv->events.eventw = 0;
2635 }
2636
59b1842d
DB		 2637 if (adapter->mfe_shared)
2638 mutex_unlock (&adapter->mfe_lock);
1da177e4 2639 return ret;
48136e1e
OE		 2640
2641err2:
2642 dvb_generic_release(inode, file);
2643err1:
2644 if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl)
2645 fe->ops.ts_bus_ctrl(fe, 0);
59b1842d
DB		 2646err0:
2647 if (adapter->mfe_shared)
2648 mutex_unlock (&adapter->mfe_lock);
48136e1e 2649 return ret;
1da177e4
LT		 2650}
2651
2652static int dvb_frontend_release(struct inode *inode, struct file *file)
2653{
2654 struct dvb_device *dvbdev = file->private_data;
2655 struct dvb_frontend *fe = dvbdev->priv;
0c53c70f 2656 struct dvb_frontend_private *fepriv = fe->frontend_priv;
ca5be9cd 2657 int ret;
1da177e4 2658
36bdbc3f 2659 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2660
b9d5efcc 2661 if ((file->f_flags & O_ACCMODE) != O_RDONLY) {
1da177e4 2662 fepriv->release_jiffies = jiffies;
b9d5efcc
AO		 2663 mb();
2664 }
1da177e4 2665
ca5be9cd
MR		 2666 ret = dvb_generic_release (inode, file);
2667
48136e1e 2668 if (dvbdev->users == -1) {
b9d5efcc 2669 wake_up(&fepriv->wait_queue);
18ed2860 2670 if (fe->exit != DVB_FE_NO_EXIT)
48136e1e 2671 wake_up(&dvbdev->wait_queue);
48136e1e
OE		 2672 if (fe->ops.ts_bus_ctrl)
2673 fe->ops.ts_bus_ctrl(fe, 0);
ca5be9cd 2674 }
48136e1e 2675
ca5be9cd 2676 return ret;
1da177e4
LT		 2677}
2678
784e29d2 2679static const struct file_operations dvb_frontend_fops = {
1da177e4 2680 .owner = THIS_MODULE,
16ef8def 2681 .unlocked_ioctl = dvb_generic_ioctl,
1da177e4
LT		 2682 .poll = dvb_frontend_poll,
2683 .open = dvb_frontend_open,
6038f373
AB		 2684 .release = dvb_frontend_release,
2685 .llseek = noop_llseek,
1da177e4
LT		 2686};
2687
06bae122
AP		 2688int dvb_frontend_suspend(struct dvb_frontend *fe)
2689{
2690 int ret = 0;
2691
2692 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2693 fe->id);
2694
59d7889a
MCC		 2695 if (fe->ops.tuner_ops.suspend)
2696 ret = fe->ops.tuner_ops.suspend(fe);
2697 else if (fe->ops.tuner_ops.sleep)
06bae122
AP		 2698 ret = fe->ops.tuner_ops.sleep(fe);
2699
2700 if (fe->ops.sleep)
2701 ret = fe->ops.sleep(fe);
2702
2703 return ret;
2704}
2705EXPORT_SYMBOL(dvb_frontend_suspend);
2706
2707int dvb_frontend_resume(struct dvb_frontend *fe)
2708{
2709 struct dvb_frontend_private *fepriv = fe->frontend_priv;
2710 int ret = 0;
2711
2712 dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
2713 fe->id);
2714
87cd0fa8 2715 fe->exit = DVB_FE_DEVICE_RESUME;
06bae122
AP		 2716 if (fe->ops.init)
2717 ret = fe->ops.init(fe);
2718
59d7889a
MCC		 2719 if (fe->ops.tuner_ops.resume)
2720 ret = fe->ops.tuner_ops.resume(fe);
2721 else if (fe->ops.tuner_ops.init)
06bae122
AP		 2722 ret = fe->ops.tuner_ops.init(fe);
2723
3663b31b
MCC		 2724 if (fe->ops.set_tone && fepriv->tone != -1)
2725 fe->ops.set_tone(fe, fepriv->tone);
2726 if (fe->ops.set_voltage && fepriv->voltage != -1)
2727 fe->ops.set_voltage(fe, fepriv->voltage);
2728
87cd0fa8 2729 fe->exit = DVB_FE_NO_EXIT;
06bae122
AP		 2730 fepriv->state = FESTATE_RETUNE;
2731 dvb_frontend_wakeup(fe);
2732
2733 return ret;
2734}
2735EXPORT_SYMBOL(dvb_frontend_resume);
2736
1da177e4
LT		 2737int dvb_register_frontend(struct dvb_adapter* dvb,
2738 struct dvb_frontend* fe)
2739{
2740 struct dvb_frontend_private *fepriv;
c1b31b1e 2741 const struct dvb_device dvbdev_template = {
1da177e4
LT		 2742 .users = ~0,
2743 .writers = 1,
2744 .readers = (~0)-1,
2745 .fops = &dvb_frontend_fops,
c1b31b1e
MCC		 2746#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
2747 .name = fe->ops.info.name,
2748#endif
1da177e4
LT		 2749 .kernel_ioctl = dvb_frontend_ioctl
2750 };
2751
36bdbc3f 2752 dev_dbg(dvb->device, "%s:\n", __func__);
1da177e4 2753
3593cab5 2754 if (mutex_lock_interruptible(&frontend_mutex))
1da177e4
LT		 2755 return -ERESTARTSYS;
2756
7408187d 2757 fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL);
1da177e4 2758 if (fe->frontend_priv == NULL) {
3593cab5 2759 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2760 return -ENOMEM;
2761 }
0c53c70f 2762 fepriv = fe->frontend_priv;
1da177e4 2763
a0a4714c 2764 sema_init(&fepriv->sem, 1);
1da177e4
LT		 2765 init_waitqueue_head (&fepriv->wait_queue);
2766 init_waitqueue_head (&fepriv->events.wait_queue);
03b76123 2767 mutex_init(&fepriv->events.mtx);
1da177e4
LT		 2768 fe->dvb = dvb;
2769 fepriv->inversion = INVERSION_OFF;
2770
36bdbc3f
AP		 2771 dev_info(fe->dvb->device,
2772 "DVB: registering adapter %i frontend %i (%s)...\n",
2773 fe->dvb->num, fe->id, fe->ops.info.name);
1da177e4
LT		 2774
2775 dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
df2f94e5 2776 fe, DVB_DEVICE_FRONTEND, 0);
1da177e4 2777
5bfaadde
MCC		 2778 /*
2779 * Initialize the cache to the proper values according with the
2780 * first supported delivery system (ops->delsys[0])
2781 */
240ab508 2782
be431b16 2783 fe->dtv_property_cache.delivery_system = fe->ops.delsys[0];
5bfaadde
MCC		 2784 dvb_frontend_clear_cache(fe);
2785
3593cab5 2786 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2787 return 0;
2788}
2789EXPORT_SYMBOL(dvb_register_frontend);
2790
2791int dvb_unregister_frontend(struct dvb_frontend* fe)
2792{
0c53c70f 2793 struct dvb_frontend_private *fepriv = fe->frontend_priv;
36bdbc3f 2794 dev_dbg(fe->dvb->device, "%s:\n", __func__);
1da177e4 2795
57861b43 2796 mutex_lock(&frontend_mutex);
ca5be9cd 2797 dvb_frontend_stop (fe);
57861b43
MR		 2798 mutex_unlock(&frontend_mutex);
2799
2800 if (fepriv->dvbdev->users < -1)
2801 wait_event(fepriv->dvbdev->wait_queue,
2802 fepriv->dvbdev->users==-1);
2803
3593cab5 2804 mutex_lock(&frontend_mutex);
1da177e4 2805 dvb_unregister_device (fepriv->dvbdev);
d9955060 2806
1da177e4
LT		 2807 /* fe is invalid now */
2808 kfree(fepriv);
3593cab5 2809 mutex_unlock(&frontend_mutex);
1da177e4
LT		 2810 return 0;
2811}
2812EXPORT_SYMBOL(dvb_unregister_frontend);
f52a838b 2813
149ef72d 2814#ifdef CONFIG_MEDIA_ATTACH
f52a838b
AQ		 2815void dvb_frontend_detach(struct dvb_frontend* fe)
2816{
2817 void *ptr;
2818
2819 if (fe->ops.release_sec) {
2820 fe->ops.release_sec(fe);
4647f487 2821 dvb_detach(fe->ops.release_sec);
f52a838b
AQ		 2822 }
2823 if (fe->ops.tuner_ops.release) {
2824 fe->ops.tuner_ops.release(fe);
4647f487 2825 dvb_detach(fe->ops.tuner_ops.release);
f52a838b 2826 }
2426a27e
MK		 2827 if (fe->ops.analog_ops.release) {
2828 fe->ops.analog_ops.release(fe);
4647f487 2829 dvb_detach(fe->ops.analog_ops.release);
2426a27e 2830 }
f52a838b
AQ		 2831 ptr = (void*)fe->ops.release;
2832 if (ptr) {
2833 fe->ops.release(fe);
4647f487 2834 dvb_detach(ptr);
f52a838b
AQ		 2835 }
2836}
2837#else
2838void dvb_frontend_detach(struct dvb_frontend* fe)
2839{
2840 if (fe->ops.release_sec)
2841 fe->ops.release_sec(fe);
2842 if (fe->ops.tuner_ops.release)
2843 fe->ops.tuner_ops.release(fe);
2426a27e
MK		 2844 if (fe->ops.analog_ops.release)
2845 fe->ops.analog_ops.release(fe);
f52a838b
AQ		 2846 if (fe->ops.release)
2847 fe->ops.release(fe);
2848}
2849#endif
2850EXPORT_SYMBOL(dvb_frontend_detach);
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