2 * dvb_frontend.c: DVB frontend tuning interface/thread
5 * Copyright (C) 1999-2001 Ralph Metzler
8 * for convergence integrated media GmbH
10 * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup)
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.
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.
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
28 /* Enables DVBv3 compatibility bits at the headers */
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>
37 #include <linux/semaphore.h>
38 #include <linux/module.h>
39 #include <linux/list.h>
40 #include <linux/freezer.h>
41 #include <linux/jiffies.h>
42 #include <linux/kthread.h>
43 #include <asm/processor.h>
45 #include "dvb_frontend.h"
47 #include <linux/dvb/version.h>
49 static int dvb_frontend_debug
;
50 static int dvb_shutdown_timeout
;
51 static int dvb_force_auto_inversion
;
52 static int dvb_override_tune_delay
;
53 static int dvb_powerdown_on_sleep
= 1;
54 static int dvb_mfe_wait_time
= 5;
56 module_param_named(frontend_debug
, dvb_frontend_debug
, int, 0644);
57 MODULE_PARM_DESC(frontend_debug
, "Turn on/off frontend core debugging (default:off).");
58 module_param(dvb_shutdown_timeout
, int, 0644);
59 MODULE_PARM_DESC(dvb_shutdown_timeout
, "wait <shutdown_timeout> seconds after close() before suspending hardware");
60 module_param(dvb_force_auto_inversion
, int, 0644);
61 MODULE_PARM_DESC(dvb_force_auto_inversion
, "0: normal (default), 1: INVERSION_AUTO forced always");
62 module_param(dvb_override_tune_delay
, int, 0644);
63 MODULE_PARM_DESC(dvb_override_tune_delay
, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
64 module_param(dvb_powerdown_on_sleep
, int, 0644);
65 MODULE_PARM_DESC(dvb_powerdown_on_sleep
, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
66 module_param(dvb_mfe_wait_time
, int, 0644);
67 MODULE_PARM_DESC(dvb_mfe_wait_time
, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)");
69 #define FESTATE_IDLE 1
70 #define FESTATE_RETUNE 2
71 #define FESTATE_TUNING_FAST 4
72 #define FESTATE_TUNING_SLOW 8
73 #define FESTATE_TUNED 16
74 #define FESTATE_ZIGZAG_FAST 32
75 #define FESTATE_ZIGZAG_SLOW 64
76 #define FESTATE_DISEQC 128
77 #define FESTATE_ERROR 256
78 #define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
79 #define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
80 #define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
81 #define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
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.
99 static DEFINE_MUTEX(frontend_mutex
);
101 struct dvb_frontend_private
{
103 /* thread/frontend values */
104 struct dvb_device
*dvbdev
;
105 struct dvb_frontend_parameters parameters_out
;
106 struct dvb_fe_events events
;
107 struct semaphore sem
;
108 struct list_head list_head
;
109 wait_queue_head_t wait_queue
;
110 struct task_struct
*thread
;
111 unsigned long release_jiffies
;
114 unsigned long tune_mode_flags
;
116 unsigned int reinitialise
;
120 /* swzigzag values */
122 unsigned int bending
;
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
;
132 unsigned int check_wrapped
;
133 enum dvbfe_search algo_status
;
136 static void dvb_frontend_wakeup(struct dvb_frontend
*fe
);
137 static int dtv_get_frontend(struct dvb_frontend
*fe
,
138 struct dvb_frontend_parameters
*p_out
);
139 static int dtv_property_legacy_params_sync(struct dvb_frontend
*fe
,
140 struct dvb_frontend_parameters
*p
);
142 static bool has_get_frontend(struct dvb_frontend
*fe
)
144 return fe
->ops
.get_frontend
!= NULL
;
148 * Due to DVBv3 API calls, a delivery system should be mapped into one of
149 * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
150 * otherwise, a DVBv3 call will fail.
152 enum dvbv3_emulation_type
{
160 static enum dvbv3_emulation_type
dvbv3_type(u32 delivery_system
)
162 switch (delivery_system
) {
163 case SYS_DVBC_ANNEX_A
:
164 case SYS_DVBC_ANNEX_C
:
179 case SYS_DVBC_ANNEX_B
:
187 * Doesn't know how to emulate those types and/or
188 * there's no frontend driver from this type yet
189 * with some emulation code, so, we're not sure yet how
190 * to handle them, or they're not compatible with a DVBv3 call.
192 return DVBV3_UNKNOWN
;
196 static void dvb_frontend_add_event(struct dvb_frontend
*fe
, fe_status_t status
)
198 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
199 struct dvb_fe_events
*events
= &fepriv
->events
;
200 struct dvb_frontend_event
*e
;
203 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
205 if ((status
& FE_HAS_LOCK
) && has_get_frontend(fe
))
206 dtv_get_frontend(fe
, &fepriv
->parameters_out
);
208 mutex_lock(&events
->mtx
);
210 wp
= (events
->eventw
+ 1) % MAX_EVENT
;
211 if (wp
== events
->eventr
) {
212 events
->overflow
= 1;
213 events
->eventr
= (events
->eventr
+ 1) % MAX_EVENT
;
216 e
= &events
->events
[events
->eventw
];
218 e
->parameters
= fepriv
->parameters_out
;
222 mutex_unlock(&events
->mtx
);
224 wake_up_interruptible (&events
->wait_queue
);
227 static int dvb_frontend_get_event(struct dvb_frontend
*fe
,
228 struct dvb_frontend_event
*event
, int flags
)
230 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
231 struct dvb_fe_events
*events
= &fepriv
->events
;
233 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
235 if (events
->overflow
) {
236 events
->overflow
= 0;
240 if (events
->eventw
== events
->eventr
) {
243 if (flags
& O_NONBLOCK
)
248 ret
= wait_event_interruptible (events
->wait_queue
,
249 events
->eventw
!= events
->eventr
);
251 if (down_interruptible (&fepriv
->sem
))
258 mutex_lock(&events
->mtx
);
259 *event
= events
->events
[events
->eventr
];
260 events
->eventr
= (events
->eventr
+ 1) % MAX_EVENT
;
261 mutex_unlock(&events
->mtx
);
266 static void dvb_frontend_clear_events(struct dvb_frontend
*fe
)
268 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
269 struct dvb_fe_events
*events
= &fepriv
->events
;
271 mutex_lock(&events
->mtx
);
272 events
->eventr
= events
->eventw
;
273 mutex_unlock(&events
->mtx
);
276 static void dvb_frontend_init(struct dvb_frontend
*fe
)
278 dev_dbg(fe
->dvb
->device
,
279 "%s: initialising adapter %i frontend %i (%s)...\n",
280 __func__
, fe
->dvb
->num
, fe
->id
, fe
->ops
.info
.name
);
284 if (fe
->ops
.tuner_ops
.init
) {
285 if (fe
->ops
.i2c_gate_ctrl
)
286 fe
->ops
.i2c_gate_ctrl(fe
, 1);
287 fe
->ops
.tuner_ops
.init(fe
);
288 if (fe
->ops
.i2c_gate_ctrl
)
289 fe
->ops
.i2c_gate_ctrl(fe
, 0);
293 void dvb_frontend_reinitialise(struct dvb_frontend
*fe
)
295 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
297 fepriv
->reinitialise
= 1;
298 dvb_frontend_wakeup(fe
);
300 EXPORT_SYMBOL(dvb_frontend_reinitialise
);
302 static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private
*fepriv
, int locked
)
305 struct dvb_frontend
*fe
= fepriv
->dvbdev
->priv
;
307 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
310 (fepriv
->quality
) = (fepriv
->quality
* 220 + 36*256) / 256;
312 (fepriv
->quality
) = (fepriv
->quality
* 220 + 0) / 256;
314 q2
= fepriv
->quality
- 128;
317 fepriv
->delay
= fepriv
->min_delay
+ q2
* HZ
/ (128*128);
321 * Performs automatic twiddling of frontend parameters.
323 * @param fe The frontend concerned.
324 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
325 * @returns Number of complete iterations that have been performed.
327 static int dvb_frontend_swzigzag_autotune(struct dvb_frontend
*fe
, int check_wrapped
)
332 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
333 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
, tmp
;
334 int original_inversion
= c
->inversion
;
335 u32 original_frequency
= c
->frequency
;
337 /* are we using autoinversion? */
338 autoinversion
= ((!(fe
->ops
.info
.caps
& FE_CAN_INVERSION_AUTO
)) &&
339 (c
->inversion
== INVERSION_AUTO
));
341 /* setup parameters correctly */
343 /* calculate the lnb_drift */
344 fepriv
->lnb_drift
= fepriv
->auto_step
* fepriv
->step_size
;
346 /* wrap the auto_step if we've exceeded the maximum drift */
347 if (fepriv
->lnb_drift
> fepriv
->max_drift
) {
348 fepriv
->auto_step
= 0;
349 fepriv
->auto_sub_step
= 0;
350 fepriv
->lnb_drift
= 0;
353 /* perform inversion and +/- zigzag */
354 switch(fepriv
->auto_sub_step
) {
356 /* try with the current inversion and current drift setting */
361 if (!autoinversion
) break;
363 fepriv
->inversion
= (fepriv
->inversion
== INVERSION_OFF
) ? INVERSION_ON
: INVERSION_OFF
;
368 if (fepriv
->lnb_drift
== 0) break;
370 fepriv
->lnb_drift
= -fepriv
->lnb_drift
;
375 if (fepriv
->lnb_drift
== 0) break;
376 if (!autoinversion
) break;
378 fepriv
->inversion
= (fepriv
->inversion
== INVERSION_OFF
) ? INVERSION_ON
: INVERSION_OFF
;
379 fepriv
->lnb_drift
= -fepriv
->lnb_drift
;
385 fepriv
->auto_sub_step
= -1; /* it'll be incremented to 0 in a moment */
389 if (!ready
) fepriv
->auto_sub_step
++;
392 /* if this attempt would hit where we started, indicate a complete
393 * iteration has occurred */
394 if ((fepriv
->auto_step
== fepriv
->started_auto_step
) &&
395 (fepriv
->auto_sub_step
== 0) && check_wrapped
) {
399 dev_dbg(fe
->dvb
->device
, "%s: drift:%i inversion:%i auto_step:%i " \
400 "auto_sub_step:%i started_auto_step:%i\n",
401 __func__
, fepriv
->lnb_drift
, fepriv
->inversion
,
402 fepriv
->auto_step
, fepriv
->auto_sub_step
,
403 fepriv
->started_auto_step
);
405 /* set the frontend itself */
406 c
->frequency
+= fepriv
->lnb_drift
;
408 c
->inversion
= fepriv
->inversion
;
410 if (fe
->ops
.set_frontend
)
411 fe_set_err
= fe
->ops
.set_frontend(fe
);
413 if (fe_set_err
< 0) {
414 fepriv
->state
= FESTATE_ERROR
;
418 c
->frequency
= original_frequency
;
419 c
->inversion
= original_inversion
;
421 fepriv
->auto_sub_step
++;
425 static void dvb_frontend_swzigzag(struct dvb_frontend
*fe
)
429 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
430 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
, tmp
;
432 /* if we've got no parameters, just keep idling */
433 if (fepriv
->state
& FESTATE_IDLE
) {
434 fepriv
->delay
= 3*HZ
;
439 /* in SCAN mode, we just set the frontend when asked and leave it alone */
440 if (fepriv
->tune_mode_flags
& FE_TUNE_MODE_ONESHOT
) {
441 if (fepriv
->state
& FESTATE_RETUNE
) {
443 if (fe
->ops
.set_frontend
)
444 retval
= fe
->ops
.set_frontend(fe
);
447 fepriv
->state
= FESTATE_ERROR
;
449 fepriv
->state
= FESTATE_TUNED
;
451 fepriv
->delay
= 3*HZ
;
456 /* get the frontend status */
457 if (fepriv
->state
& FESTATE_RETUNE
) {
460 if (fe
->ops
.read_status
)
461 fe
->ops
.read_status(fe
, &s
);
462 if (s
!= fepriv
->status
) {
463 dvb_frontend_add_event(fe
, s
);
468 /* if we're not tuned, and we have a lock, move to the TUNED state */
469 if ((fepriv
->state
& FESTATE_WAITFORLOCK
) && (s
& FE_HAS_LOCK
)) {
470 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
471 fepriv
->state
= FESTATE_TUNED
;
473 /* if we're tuned, then we have determined the correct inversion */
474 if ((!(fe
->ops
.info
.caps
& FE_CAN_INVERSION_AUTO
)) &&
475 (c
->inversion
== INVERSION_AUTO
)) {
476 c
->inversion
= fepriv
->inversion
;
481 /* if we are tuned already, check we're still locked */
482 if (fepriv
->state
& FESTATE_TUNED
) {
483 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
485 /* we're tuned, and the lock is still good... */
486 if (s
& FE_HAS_LOCK
) {
488 } else { /* if we _WERE_ tuned, but now don't have a lock */
489 fepriv
->state
= FESTATE_ZIGZAG_FAST
;
490 fepriv
->started_auto_step
= fepriv
->auto_step
;
491 fepriv
->check_wrapped
= 0;
495 /* don't actually do anything if we're in the LOSTLOCK state,
496 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
497 if ((fepriv
->state
& FESTATE_LOSTLOCK
) &&
498 (fe
->ops
.info
.caps
& FE_CAN_RECOVER
) && (fepriv
->max_drift
== 0)) {
499 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
503 /* don't do anything if we're in the DISEQC state, since this
504 * might be someone with a motorized dish controlled by DISEQC.
505 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
506 if (fepriv
->state
& FESTATE_DISEQC
) {
507 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
511 /* if we're in the RETUNE state, set everything up for a brand
512 * new scan, keeping the current inversion setting, as the next
513 * tune is _very_ likely to require the same */
514 if (fepriv
->state
& FESTATE_RETUNE
) {
515 fepriv
->lnb_drift
= 0;
516 fepriv
->auto_step
= 0;
517 fepriv
->auto_sub_step
= 0;
518 fepriv
->started_auto_step
= 0;
519 fepriv
->check_wrapped
= 0;
523 if ((fepriv
->state
& FESTATE_SEARCHING_FAST
) || (fepriv
->state
& FESTATE_RETUNE
)) {
524 fepriv
->delay
= fepriv
->min_delay
;
527 retval
= dvb_frontend_swzigzag_autotune(fe
,
528 fepriv
->check_wrapped
);
532 /* OK, if we've run out of trials at the fast speed.
533 * Drop back to slow for the _next_ attempt */
534 fepriv
->state
= FESTATE_SEARCHING_SLOW
;
535 fepriv
->started_auto_step
= fepriv
->auto_step
;
538 fepriv
->check_wrapped
= 1;
540 /* if we've just retuned, enter the ZIGZAG_FAST state.
541 * This ensures we cannot return from an
542 * FE_SET_FRONTEND ioctl before the first frontend tune
544 if (fepriv
->state
& FESTATE_RETUNE
) {
545 fepriv
->state
= FESTATE_TUNING_FAST
;
550 if (fepriv
->state
& FESTATE_SEARCHING_SLOW
) {
551 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
553 /* Note: don't bother checking for wrapping; we stay in this
554 * state until we get a lock */
555 dvb_frontend_swzigzag_autotune(fe
, 0);
559 static int dvb_frontend_is_exiting(struct dvb_frontend
*fe
)
561 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
563 if (fe
->exit
!= DVB_FE_NO_EXIT
)
566 if (fepriv
->dvbdev
->writers
== 1)
567 if (time_after_eq(jiffies
, fepriv
->release_jiffies
+
568 dvb_shutdown_timeout
* HZ
))
574 static int dvb_frontend_should_wakeup(struct dvb_frontend
*fe
)
576 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
578 if (fepriv
->wakeup
) {
582 return dvb_frontend_is_exiting(fe
);
585 static void dvb_frontend_wakeup(struct dvb_frontend
*fe
)
587 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
590 wake_up_interruptible(&fepriv
->wait_queue
);
593 static int dvb_frontend_thread(void *data
)
595 struct dvb_frontend
*fe
= data
;
596 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
598 enum dvbfe_algo algo
;
600 bool re_tune
= false;
601 bool semheld
= false;
603 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
605 fepriv
->check_wrapped
= 0;
607 fepriv
->delay
= 3*HZ
;
610 fepriv
->reinitialise
= 0;
612 dvb_frontend_init(fe
);
616 up(&fepriv
->sem
); /* is locked when we enter the thread... */
618 wait_event_interruptible_timeout(fepriv
->wait_queue
,
619 dvb_frontend_should_wakeup(fe
) || kthread_should_stop()
620 || freezing(current
),
623 if (kthread_should_stop() || dvb_frontend_is_exiting(fe
)) {
624 /* got signal or quitting */
625 if (!down_interruptible(&fepriv
->sem
))
627 fe
->exit
= DVB_FE_NORMAL_EXIT
;
634 if (down_interruptible(&fepriv
->sem
))
637 if (fepriv
->reinitialise
) {
638 dvb_frontend_init(fe
);
639 if (fe
->ops
.set_tone
&& fepriv
->tone
!= -1)
640 fe
->ops
.set_tone(fe
, fepriv
->tone
);
641 if (fe
->ops
.set_voltage
&& fepriv
->voltage
!= -1)
642 fe
->ops
.set_voltage(fe
, fepriv
->voltage
);
643 fepriv
->reinitialise
= 0;
646 /* do an iteration of the tuning loop */
647 if (fe
->ops
.get_frontend_algo
) {
648 algo
= fe
->ops
.get_frontend_algo(fe
);
651 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__
);
653 if (fepriv
->state
& FESTATE_RETUNE
) {
654 dev_dbg(fe
->dvb
->device
, "%s: Retune requested, FESTATE_RETUNE\n", __func__
);
656 fepriv
->state
= FESTATE_TUNED
;
662 fe
->ops
.tune(fe
, re_tune
, fepriv
->tune_mode_flags
, &fepriv
->delay
, &s
);
664 if (s
!= fepriv
->status
&& !(fepriv
->tune_mode_flags
& FE_TUNE_MODE_ONESHOT
)) {
665 dev_dbg(fe
->dvb
->device
, "%s: state changed, adding current state\n", __func__
);
666 dvb_frontend_add_event(fe
, s
);
671 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__
);
672 dvb_frontend_swzigzag(fe
);
674 case DVBFE_ALGO_CUSTOM
:
675 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__
, fepriv
->state
);
676 if (fepriv
->state
& FESTATE_RETUNE
) {
677 dev_dbg(fe
->dvb
->device
, "%s: Retune requested, FESTAT_RETUNE\n", __func__
);
678 fepriv
->state
= FESTATE_TUNED
;
680 /* Case where we are going to search for a carrier
681 * User asked us to retune again for some reason, possibly
682 * requesting a search with a new set of parameters
684 if (fepriv
->algo_status
& DVBFE_ALGO_SEARCH_AGAIN
) {
685 if (fe
->ops
.search
) {
686 fepriv
->algo_status
= fe
->ops
.search(fe
);
687 /* We did do a search as was requested, the flags are
688 * now unset as well and has the flags wrt to search.
691 fepriv
->algo_status
&= ~DVBFE_ALGO_SEARCH_AGAIN
;
694 /* Track the carrier if the search was successful */
695 if (fepriv
->algo_status
!= DVBFE_ALGO_SEARCH_SUCCESS
) {
696 fepriv
->algo_status
|= DVBFE_ALGO_SEARCH_AGAIN
;
697 fepriv
->delay
= HZ
/ 2;
699 dtv_property_legacy_params_sync(fe
, &fepriv
->parameters_out
);
700 fe
->ops
.read_status(fe
, &s
);
701 if (s
!= fepriv
->status
) {
702 dvb_frontend_add_event(fe
, s
); /* update event list */
704 if (!(s
& FE_HAS_LOCK
)) {
705 fepriv
->delay
= HZ
/ 10;
706 fepriv
->algo_status
|= DVBFE_ALGO_SEARCH_AGAIN
;
708 fepriv
->delay
= 60 * HZ
;
713 dev_dbg(fe
->dvb
->device
, "%s: UNDEFINED ALGO !\n", __func__
);
717 dvb_frontend_swzigzag(fe
);
721 if (dvb_powerdown_on_sleep
) {
722 if (fe
->ops
.set_voltage
)
723 fe
->ops
.set_voltage(fe
, SEC_VOLTAGE_OFF
);
724 if (fe
->ops
.tuner_ops
.sleep
) {
725 if (fe
->ops
.i2c_gate_ctrl
)
726 fe
->ops
.i2c_gate_ctrl(fe
, 1);
727 fe
->ops
.tuner_ops
.sleep(fe
);
728 if (fe
->ops
.i2c_gate_ctrl
)
729 fe
->ops
.i2c_gate_ctrl(fe
, 0);
735 fepriv
->thread
= NULL
;
736 if (kthread_should_stop())
737 fe
->exit
= DVB_FE_DEVICE_REMOVED
;
739 fe
->exit
= DVB_FE_NO_EXIT
;
744 dvb_frontend_wakeup(fe
);
748 static void dvb_frontend_stop(struct dvb_frontend
*fe
)
750 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
752 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
754 if (fe
->exit
!= DVB_FE_DEVICE_REMOVED
)
755 fe
->exit
= DVB_FE_NORMAL_EXIT
;
761 kthread_stop(fepriv
->thread
);
763 sema_init(&fepriv
->sem
, 1);
764 fepriv
->state
= FESTATE_IDLE
;
766 /* paranoia check in case a signal arrived */
768 dev_warn(fe
->dvb
->device
,
769 "dvb_frontend_stop: warning: thread %p won't exit\n",
773 s32
timeval_usec_diff(struct timeval lasttime
, struct timeval curtime
)
775 return ((curtime
.tv_usec
< lasttime
.tv_usec
) ?
776 1000000 - lasttime
.tv_usec
+ curtime
.tv_usec
:
777 curtime
.tv_usec
- lasttime
.tv_usec
);
779 EXPORT_SYMBOL(timeval_usec_diff
);
781 static inline void timeval_usec_add(struct timeval
*curtime
, u32 add_usec
)
783 curtime
->tv_usec
+= add_usec
;
784 if (curtime
->tv_usec
>= 1000000) {
785 curtime
->tv_usec
-= 1000000;
791 * Sleep until gettimeofday() > waketime + add_usec
792 * This needs to be as precise as possible, but as the delay is
793 * usually between 2ms and 32ms, it is done using a scheduled msleep
794 * followed by usleep (normally a busy-wait loop) for the remainder
796 void dvb_frontend_sleep_until(struct timeval
*waketime
, u32 add_usec
)
798 struct timeval lasttime
;
801 timeval_usec_add(waketime
, add_usec
);
803 do_gettimeofday(&lasttime
);
804 delta
= timeval_usec_diff(lasttime
, *waketime
);
806 msleep((delta
- 1500) / 1000);
807 do_gettimeofday(&lasttime
);
808 newdelta
= timeval_usec_diff(lasttime
, *waketime
);
809 delta
= (newdelta
> delta
) ? 0 : newdelta
;
814 EXPORT_SYMBOL(dvb_frontend_sleep_until
);
816 static int dvb_frontend_start(struct dvb_frontend
*fe
)
819 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
820 struct task_struct
*fe_thread
;
822 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
824 if (fepriv
->thread
) {
825 if (fe
->exit
== DVB_FE_NO_EXIT
)
828 dvb_frontend_stop (fe
);
831 if (signal_pending(current
))
833 if (down_interruptible (&fepriv
->sem
))
836 fepriv
->state
= FESTATE_IDLE
;
837 fe
->exit
= DVB_FE_NO_EXIT
;
838 fepriv
->thread
= NULL
;
841 fe_thread
= kthread_run(dvb_frontend_thread
, fe
,
842 "kdvb-ad-%i-fe-%i", fe
->dvb
->num
,fe
->id
);
843 if (IS_ERR(fe_thread
)) {
844 ret
= PTR_ERR(fe_thread
);
845 dev_warn(fe
->dvb
->device
,
846 "dvb_frontend_start: failed to start kthread (%d)\n",
851 fepriv
->thread
= fe_thread
;
855 static void dvb_frontend_get_frequency_limits(struct dvb_frontend
*fe
,
856 u32
*freq_min
, u32
*freq_max
)
858 *freq_min
= max(fe
->ops
.info
.frequency_min
, fe
->ops
.tuner_ops
.info
.frequency_min
);
860 if (fe
->ops
.info
.frequency_max
== 0)
861 *freq_max
= fe
->ops
.tuner_ops
.info
.frequency_max
;
862 else if (fe
->ops
.tuner_ops
.info
.frequency_max
== 0)
863 *freq_max
= fe
->ops
.info
.frequency_max
;
865 *freq_max
= min(fe
->ops
.info
.frequency_max
, fe
->ops
.tuner_ops
.info
.frequency_max
);
867 if (*freq_min
== 0 || *freq_max
== 0)
868 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
869 fe
->dvb
->num
, fe
->id
);
872 static int dvb_frontend_check_parameters(struct dvb_frontend
*fe
)
874 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
878 /* range check: frequency */
879 dvb_frontend_get_frequency_limits(fe
, &freq_min
, &freq_max
);
880 if ((freq_min
&& c
->frequency
< freq_min
) ||
881 (freq_max
&& c
->frequency
> freq_max
)) {
882 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
883 fe
->dvb
->num
, fe
->id
, c
->frequency
,
888 /* range check: symbol rate */
889 switch (c
->delivery_system
) {
893 case SYS_DVBC_ANNEX_A
:
894 case SYS_DVBC_ANNEX_C
:
895 if ((fe
->ops
.info
.symbol_rate_min
&&
896 c
->symbol_rate
< fe
->ops
.info
.symbol_rate_min
) ||
897 (fe
->ops
.info
.symbol_rate_max
&&
898 c
->symbol_rate
> fe
->ops
.info
.symbol_rate_max
)) {
899 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
900 fe
->dvb
->num
, fe
->id
, c
->symbol_rate
,
901 fe
->ops
.info
.symbol_rate_min
,
902 fe
->ops
.info
.symbol_rate_max
);
912 static int dvb_frontend_clear_cache(struct dvb_frontend
*fe
)
914 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
918 delsys
= c
->delivery_system
;
919 memset(c
, 0, offsetof(struct dtv_frontend_properties
, strength
));
920 c
->delivery_system
= delsys
;
922 c
->state
= DTV_CLEAR
;
924 dev_dbg(fe
->dvb
->device
, "%s: Clearing cache for delivery system %d\n",
925 __func__
, c
->delivery_system
);
927 c
->transmission_mode
= TRANSMISSION_MODE_AUTO
;
928 c
->bandwidth_hz
= 0; /* AUTO */
929 c
->guard_interval
= GUARD_INTERVAL_AUTO
;
930 c
->hierarchy
= HIERARCHY_AUTO
;
932 c
->code_rate_HP
= FEC_AUTO
;
933 c
->code_rate_LP
= FEC_AUTO
;
934 c
->fec_inner
= FEC_AUTO
;
935 c
->rolloff
= ROLLOFF_AUTO
;
936 c
->voltage
= SEC_VOLTAGE_OFF
;
937 c
->sectone
= SEC_TONE_OFF
;
938 c
->pilot
= PILOT_AUTO
;
940 c
->isdbt_partial_reception
= 0;
941 c
->isdbt_sb_mode
= 0;
942 c
->isdbt_sb_subchannel
= 0;
943 c
->isdbt_sb_segment_idx
= 0;
944 c
->isdbt_sb_segment_count
= 0;
945 c
->isdbt_layer_enabled
= 0;
946 for (i
= 0; i
< 3; i
++) {
947 c
->layer
[i
].fec
= FEC_AUTO
;
948 c
->layer
[i
].modulation
= QAM_AUTO
;
949 c
->layer
[i
].interleaving
= 0;
950 c
->layer
[i
].segment_count
= 0;
953 c
->stream_id
= NO_STREAM_ID_FILTER
;
955 switch (c
->delivery_system
) {
959 c
->modulation
= QPSK
; /* implied for DVB-S in legacy API */
960 c
->rolloff
= ROLLOFF_35
;/* implied for DVB-S */
963 c
->modulation
= VSB_8
;
966 c
->symbol_rate
= 28860000;
967 c
->rolloff
= ROLLOFF_35
;
968 c
->bandwidth_hz
= c
->symbol_rate
/ 100 * 135;
971 c
->modulation
= QAM_AUTO
;
980 #define _DTV_CMD(n, s, b) \
988 static struct dtv_cmds_h dtv_cmds
[DTV_MAX_COMMAND
+ 1] = {
989 _DTV_CMD(DTV_TUNE
, 1, 0),
990 _DTV_CMD(DTV_CLEAR
, 1, 0),
993 _DTV_CMD(DTV_FREQUENCY
, 1, 0),
994 _DTV_CMD(DTV_BANDWIDTH_HZ
, 1, 0),
995 _DTV_CMD(DTV_MODULATION
, 1, 0),
996 _DTV_CMD(DTV_INVERSION
, 1, 0),
997 _DTV_CMD(DTV_DISEQC_MASTER
, 1, 1),
998 _DTV_CMD(DTV_SYMBOL_RATE
, 1, 0),
999 _DTV_CMD(DTV_INNER_FEC
, 1, 0),
1000 _DTV_CMD(DTV_VOLTAGE
, 1, 0),
1001 _DTV_CMD(DTV_TONE
, 1, 0),
1002 _DTV_CMD(DTV_PILOT
, 1, 0),
1003 _DTV_CMD(DTV_ROLLOFF
, 1, 0),
1004 _DTV_CMD(DTV_DELIVERY_SYSTEM
, 1, 0),
1005 _DTV_CMD(DTV_HIERARCHY
, 1, 0),
1006 _DTV_CMD(DTV_CODE_RATE_HP
, 1, 0),
1007 _DTV_CMD(DTV_CODE_RATE_LP
, 1, 0),
1008 _DTV_CMD(DTV_GUARD_INTERVAL
, 1, 0),
1009 _DTV_CMD(DTV_TRANSMISSION_MODE
, 1, 0),
1010 _DTV_CMD(DTV_INTERLEAVING
, 1, 0),
1012 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION
, 1, 0),
1013 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING
, 1, 0),
1014 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID
, 1, 0),
1015 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX
, 1, 0),
1016 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT
, 1, 0),
1017 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED
, 1, 0),
1018 _DTV_CMD(DTV_ISDBT_LAYERA_FEC
, 1, 0),
1019 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION
, 1, 0),
1020 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT
, 1, 0),
1021 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING
, 1, 0),
1022 _DTV_CMD(DTV_ISDBT_LAYERB_FEC
, 1, 0),
1023 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION
, 1, 0),
1024 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT
, 1, 0),
1025 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING
, 1, 0),
1026 _DTV_CMD(DTV_ISDBT_LAYERC_FEC
, 1, 0),
1027 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION
, 1, 0),
1028 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT
, 1, 0),
1029 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING
, 1, 0),
1031 _DTV_CMD(DTV_STREAM_ID
, 1, 0),
1032 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY
, 1, 0),
1033 _DTV_CMD(DTV_LNA
, 1, 0),
1036 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY
, 0, 1),
1037 _DTV_CMD(DTV_API_VERSION
, 0, 0),
1039 _DTV_CMD(DTV_ENUM_DELSYS
, 0, 0),
1041 _DTV_CMD(DTV_ATSCMH_PARADE_ID
, 1, 0),
1042 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE
, 1, 0),
1044 _DTV_CMD(DTV_ATSCMH_FIC_VER
, 0, 0),
1045 _DTV_CMD(DTV_ATSCMH_NOG
, 0, 0),
1046 _DTV_CMD(DTV_ATSCMH_TNOG
, 0, 0),
1047 _DTV_CMD(DTV_ATSCMH_SGN
, 0, 0),
1048 _DTV_CMD(DTV_ATSCMH_PRC
, 0, 0),
1049 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE
, 0, 0),
1050 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI
, 0, 0),
1051 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC
, 0, 0),
1052 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE
, 0, 0),
1053 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A
, 0, 0),
1054 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B
, 0, 0),
1055 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C
, 0, 0),
1056 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D
, 0, 0),
1058 /* Statistics API */
1059 _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH
, 0, 0),
1060 _DTV_CMD(DTV_STAT_CNR
, 0, 0),
1061 _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT
, 0, 0),
1062 _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT
, 0, 0),
1063 _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT
, 0, 0),
1064 _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT
, 0, 0),
1065 _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT
, 0, 0),
1066 _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT
, 0, 0),
1069 static void dtv_property_dump(struct dvb_frontend
*fe
, struct dtv_property
*tvp
)
1073 if (tvp
->cmd
<= 0 || tvp
->cmd
> DTV_MAX_COMMAND
) {
1074 dev_warn(fe
->dvb
->device
, "%s: tvp.cmd = 0x%08x undefined\n",
1075 __func__
, tvp
->cmd
);
1079 dev_dbg(fe
->dvb
->device
, "%s: tvp.cmd = 0x%08x (%s)\n", __func__
,
1080 tvp
->cmd
, dtv_cmds
[tvp
->cmd
].name
);
1082 if (dtv_cmds
[tvp
->cmd
].buffer
) {
1083 dev_dbg(fe
->dvb
->device
, "%s: tvp.u.buffer.len = 0x%02x\n",
1084 __func__
, tvp
->u
.buffer
.len
);
1086 for(i
= 0; i
< tvp
->u
.buffer
.len
; i
++)
1087 dev_dbg(fe
->dvb
->device
,
1088 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1089 __func__
, i
, tvp
->u
.buffer
.data
[i
]);
1091 dev_dbg(fe
->dvb
->device
, "%s: tvp.u.data = 0x%08x\n", __func__
,
1096 /* Synchronise the legacy tuning parameters into the cache, so that demodulator
1097 * drivers can use a single set_frontend tuning function, regardless of whether
1098 * it's being used for the legacy or new API, reducing code and complexity.
1100 static int dtv_property_cache_sync(struct dvb_frontend
*fe
,
1101 struct dtv_frontend_properties
*c
,
1102 const struct dvb_frontend_parameters
*p
)
1104 c
->frequency
= p
->frequency
;
1105 c
->inversion
= p
->inversion
;
1107 switch (dvbv3_type(c
->delivery_system
)) {
1109 dev_dbg(fe
->dvb
->device
, "%s: Preparing QPSK req\n", __func__
);
1110 c
->symbol_rate
= p
->u
.qpsk
.symbol_rate
;
1111 c
->fec_inner
= p
->u
.qpsk
.fec_inner
;
1114 dev_dbg(fe
->dvb
->device
, "%s: Preparing QAM req\n", __func__
);
1115 c
->symbol_rate
= p
->u
.qam
.symbol_rate
;
1116 c
->fec_inner
= p
->u
.qam
.fec_inner
;
1117 c
->modulation
= p
->u
.qam
.modulation
;
1120 dev_dbg(fe
->dvb
->device
, "%s: Preparing OFDM req\n", __func__
);
1122 switch (p
->u
.ofdm
.bandwidth
) {
1123 case BANDWIDTH_10_MHZ
:
1124 c
->bandwidth_hz
= 10000000;
1126 case BANDWIDTH_8_MHZ
:
1127 c
->bandwidth_hz
= 8000000;
1129 case BANDWIDTH_7_MHZ
:
1130 c
->bandwidth_hz
= 7000000;
1132 case BANDWIDTH_6_MHZ
:
1133 c
->bandwidth_hz
= 6000000;
1135 case BANDWIDTH_5_MHZ
:
1136 c
->bandwidth_hz
= 5000000;
1138 case BANDWIDTH_1_712_MHZ
:
1139 c
->bandwidth_hz
= 1712000;
1141 case BANDWIDTH_AUTO
:
1142 c
->bandwidth_hz
= 0;
1145 c
->code_rate_HP
= p
->u
.ofdm
.code_rate_HP
;
1146 c
->code_rate_LP
= p
->u
.ofdm
.code_rate_LP
;
1147 c
->modulation
= p
->u
.ofdm
.constellation
;
1148 c
->transmission_mode
= p
->u
.ofdm
.transmission_mode
;
1149 c
->guard_interval
= p
->u
.ofdm
.guard_interval
;
1150 c
->hierarchy
= p
->u
.ofdm
.hierarchy_information
;
1153 dev_dbg(fe
->dvb
->device
, "%s: Preparing ATSC req\n", __func__
);
1154 c
->modulation
= p
->u
.vsb
.modulation
;
1155 if (c
->delivery_system
== SYS_ATSCMH
)
1157 if ((c
->modulation
== VSB_8
) || (c
->modulation
== VSB_16
))
1158 c
->delivery_system
= SYS_ATSC
;
1160 c
->delivery_system
= SYS_DVBC_ANNEX_B
;
1163 dev_err(fe
->dvb
->device
,
1164 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1165 __func__
, c
->delivery_system
);
1172 /* Ensure the cached values are set correctly in the frontend
1173 * legacy tuning structures, for the advanced tuning API.
1175 static int dtv_property_legacy_params_sync(struct dvb_frontend
*fe
,
1176 struct dvb_frontend_parameters
*p
)
1178 const struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1180 p
->frequency
= c
->frequency
;
1181 p
->inversion
= c
->inversion
;
1183 switch (dvbv3_type(c
->delivery_system
)) {
1185 dev_err(fe
->dvb
->device
,
1186 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1187 __func__
, c
->delivery_system
);
1190 dev_dbg(fe
->dvb
->device
, "%s: Preparing QPSK req\n", __func__
);
1191 p
->u
.qpsk
.symbol_rate
= c
->symbol_rate
;
1192 p
->u
.qpsk
.fec_inner
= c
->fec_inner
;
1195 dev_dbg(fe
->dvb
->device
, "%s: Preparing QAM req\n", __func__
);
1196 p
->u
.qam
.symbol_rate
= c
->symbol_rate
;
1197 p
->u
.qam
.fec_inner
= c
->fec_inner
;
1198 p
->u
.qam
.modulation
= c
->modulation
;
1201 dev_dbg(fe
->dvb
->device
, "%s: Preparing OFDM req\n", __func__
);
1202 switch (c
->bandwidth_hz
) {
1204 p
->u
.ofdm
.bandwidth
= BANDWIDTH_10_MHZ
;
1207 p
->u
.ofdm
.bandwidth
= BANDWIDTH_8_MHZ
;
1210 p
->u
.ofdm
.bandwidth
= BANDWIDTH_7_MHZ
;
1213 p
->u
.ofdm
.bandwidth
= BANDWIDTH_6_MHZ
;
1216 p
->u
.ofdm
.bandwidth
= BANDWIDTH_5_MHZ
;
1219 p
->u
.ofdm
.bandwidth
= BANDWIDTH_1_712_MHZ
;
1223 p
->u
.ofdm
.bandwidth
= BANDWIDTH_AUTO
;
1225 p
->u
.ofdm
.code_rate_HP
= c
->code_rate_HP
;
1226 p
->u
.ofdm
.code_rate_LP
= c
->code_rate_LP
;
1227 p
->u
.ofdm
.constellation
= c
->modulation
;
1228 p
->u
.ofdm
.transmission_mode
= c
->transmission_mode
;
1229 p
->u
.ofdm
.guard_interval
= c
->guard_interval
;
1230 p
->u
.ofdm
.hierarchy_information
= c
->hierarchy
;
1233 dev_dbg(fe
->dvb
->device
, "%s: Preparing VSB req\n", __func__
);
1234 p
->u
.vsb
.modulation
= c
->modulation
;
1241 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1242 * @fe: struct dvb_frontend pointer
1243 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1244 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1246 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1247 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1248 * If p_out is not null, it will update the DVBv3 params pointed by it.
1250 static int dtv_get_frontend(struct dvb_frontend
*fe
,
1251 struct dvb_frontend_parameters
*p_out
)
1255 if (fe
->ops
.get_frontend
) {
1256 r
= fe
->ops
.get_frontend(fe
);
1257 if (unlikely(r
< 0))
1260 dtv_property_legacy_params_sync(fe
, p_out
);
1264 /* As everything is in cache, get_frontend fops are always supported */
1268 static int dvb_frontend_ioctl_legacy(struct file
*file
,
1269 unsigned int cmd
, void *parg
);
1270 static int dvb_frontend_ioctl_properties(struct file
*file
,
1271 unsigned int cmd
, void *parg
);
1273 static int dtv_property_process_get(struct dvb_frontend
*fe
,
1274 const struct dtv_frontend_properties
*c
,
1275 struct dtv_property
*tvp
,
1281 case DTV_ENUM_DELSYS
:
1283 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1284 tvp
->u
.buffer
.data
[ncaps
] = fe
->ops
.delsys
[ncaps
];
1287 tvp
->u
.buffer
.len
= ncaps
;
1290 tvp
->u
.data
= c
->frequency
;
1292 case DTV_MODULATION
:
1293 tvp
->u
.data
= c
->modulation
;
1295 case DTV_BANDWIDTH_HZ
:
1296 tvp
->u
.data
= c
->bandwidth_hz
;
1299 tvp
->u
.data
= c
->inversion
;
1301 case DTV_SYMBOL_RATE
:
1302 tvp
->u
.data
= c
->symbol_rate
;
1305 tvp
->u
.data
= c
->fec_inner
;
1308 tvp
->u
.data
= c
->pilot
;
1311 tvp
->u
.data
= c
->rolloff
;
1313 case DTV_DELIVERY_SYSTEM
:
1314 tvp
->u
.data
= c
->delivery_system
;
1317 tvp
->u
.data
= c
->voltage
;
1320 tvp
->u
.data
= c
->sectone
;
1322 case DTV_API_VERSION
:
1323 tvp
->u
.data
= (DVB_API_VERSION
<< 8) | DVB_API_VERSION_MINOR
;
1325 case DTV_CODE_RATE_HP
:
1326 tvp
->u
.data
= c
->code_rate_HP
;
1328 case DTV_CODE_RATE_LP
:
1329 tvp
->u
.data
= c
->code_rate_LP
;
1331 case DTV_GUARD_INTERVAL
:
1332 tvp
->u
.data
= c
->guard_interval
;
1334 case DTV_TRANSMISSION_MODE
:
1335 tvp
->u
.data
= c
->transmission_mode
;
1338 tvp
->u
.data
= c
->hierarchy
;
1340 case DTV_INTERLEAVING
:
1341 tvp
->u
.data
= c
->interleaving
;
1344 /* ISDB-T Support here */
1345 case DTV_ISDBT_PARTIAL_RECEPTION
:
1346 tvp
->u
.data
= c
->isdbt_partial_reception
;
1348 case DTV_ISDBT_SOUND_BROADCASTING
:
1349 tvp
->u
.data
= c
->isdbt_sb_mode
;
1351 case DTV_ISDBT_SB_SUBCHANNEL_ID
:
1352 tvp
->u
.data
= c
->isdbt_sb_subchannel
;
1354 case DTV_ISDBT_SB_SEGMENT_IDX
:
1355 tvp
->u
.data
= c
->isdbt_sb_segment_idx
;
1357 case DTV_ISDBT_SB_SEGMENT_COUNT
:
1358 tvp
->u
.data
= c
->isdbt_sb_segment_count
;
1360 case DTV_ISDBT_LAYER_ENABLED
:
1361 tvp
->u
.data
= c
->isdbt_layer_enabled
;
1363 case DTV_ISDBT_LAYERA_FEC
:
1364 tvp
->u
.data
= c
->layer
[0].fec
;
1366 case DTV_ISDBT_LAYERA_MODULATION
:
1367 tvp
->u
.data
= c
->layer
[0].modulation
;
1369 case DTV_ISDBT_LAYERA_SEGMENT_COUNT
:
1370 tvp
->u
.data
= c
->layer
[0].segment_count
;
1372 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING
:
1373 tvp
->u
.data
= c
->layer
[0].interleaving
;
1375 case DTV_ISDBT_LAYERB_FEC
:
1376 tvp
->u
.data
= c
->layer
[1].fec
;
1378 case DTV_ISDBT_LAYERB_MODULATION
:
1379 tvp
->u
.data
= c
->layer
[1].modulation
;
1381 case DTV_ISDBT_LAYERB_SEGMENT_COUNT
:
1382 tvp
->u
.data
= c
->layer
[1].segment_count
;
1384 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING
:
1385 tvp
->u
.data
= c
->layer
[1].interleaving
;
1387 case DTV_ISDBT_LAYERC_FEC
:
1388 tvp
->u
.data
= c
->layer
[2].fec
;
1390 case DTV_ISDBT_LAYERC_MODULATION
:
1391 tvp
->u
.data
= c
->layer
[2].modulation
;
1393 case DTV_ISDBT_LAYERC_SEGMENT_COUNT
:
1394 tvp
->u
.data
= c
->layer
[2].segment_count
;
1396 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING
:
1397 tvp
->u
.data
= c
->layer
[2].interleaving
;
1400 /* Multistream support */
1402 case DTV_DVBT2_PLP_ID_LEGACY
:
1403 tvp
->u
.data
= c
->stream_id
;
1407 case DTV_ATSCMH_FIC_VER
:
1408 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_fic_ver
;
1410 case DTV_ATSCMH_PARADE_ID
:
1411 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_parade_id
;
1413 case DTV_ATSCMH_NOG
:
1414 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_nog
;
1416 case DTV_ATSCMH_TNOG
:
1417 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_tnog
;
1419 case DTV_ATSCMH_SGN
:
1420 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sgn
;
1422 case DTV_ATSCMH_PRC
:
1423 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_prc
;
1425 case DTV_ATSCMH_RS_FRAME_MODE
:
1426 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_frame_mode
;
1428 case DTV_ATSCMH_RS_FRAME_ENSEMBLE
:
1429 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_frame_ensemble
;
1431 case DTV_ATSCMH_RS_CODE_MODE_PRI
:
1432 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_code_mode_pri
;
1434 case DTV_ATSCMH_RS_CODE_MODE_SEC
:
1435 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_code_mode_sec
;
1437 case DTV_ATSCMH_SCCC_BLOCK_MODE
:
1438 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_block_mode
;
1440 case DTV_ATSCMH_SCCC_CODE_MODE_A
:
1441 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_a
;
1443 case DTV_ATSCMH_SCCC_CODE_MODE_B
:
1444 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_b
;
1446 case DTV_ATSCMH_SCCC_CODE_MODE_C
:
1447 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_c
;
1449 case DTV_ATSCMH_SCCC_CODE_MODE_D
:
1450 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_d
;
1454 tvp
->u
.data
= c
->lna
;
1457 /* Fill quality measures */
1458 case DTV_STAT_SIGNAL_STRENGTH
:
1459 tvp
->u
.st
= c
->strength
;
1464 case DTV_STAT_PRE_ERROR_BIT_COUNT
:
1465 tvp
->u
.st
= c
->pre_bit_error
;
1467 case DTV_STAT_PRE_TOTAL_BIT_COUNT
:
1468 tvp
->u
.st
= c
->pre_bit_count
;
1470 case DTV_STAT_POST_ERROR_BIT_COUNT
:
1471 tvp
->u
.st
= c
->post_bit_error
;
1473 case DTV_STAT_POST_TOTAL_BIT_COUNT
:
1474 tvp
->u
.st
= c
->post_bit_count
;
1476 case DTV_STAT_ERROR_BLOCK_COUNT
:
1477 tvp
->u
.st
= c
->block_error
;
1479 case DTV_STAT_TOTAL_BLOCK_COUNT
:
1480 tvp
->u
.st
= c
->block_count
;
1483 dev_dbg(fe
->dvb
->device
,
1484 "%s: FE property %d doesn't exist\n",
1485 __func__
, tvp
->cmd
);
1489 /* Allow the frontend to override outgoing properties */
1490 if (fe
->ops
.get_property
) {
1491 r
= fe
->ops
.get_property(fe
, tvp
);
1496 dtv_property_dump(fe
, tvp
);
1501 static int dtv_set_frontend(struct dvb_frontend
*fe
);
1503 static bool is_dvbv3_delsys(u32 delsys
)
1507 status
= (delsys
== SYS_DVBT
) || (delsys
== SYS_DVBC_ANNEX_A
) ||
1508 (delsys
== SYS_DVBS
) || (delsys
== SYS_ATSC
);
1514 * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
1515 * @fe: struct frontend;
1516 * @delsys: DVBv5 type that will be used for emulation
1518 * Provides emulation for delivery systems that are compatible with the old
1519 * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
1520 * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
1521 * parameters are compatible with DVB-S spec.
1523 static int emulate_delivery_system(struct dvb_frontend
*fe
, u32 delsys
)
1526 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1528 c
->delivery_system
= delsys
;
1531 * If the call is for ISDB-T, put it into full-seg, auto mode, TV
1533 if (c
->delivery_system
== SYS_ISDBT
) {
1534 dev_dbg(fe
->dvb
->device
,
1535 "%s: Using defaults for SYS_ISDBT\n",
1538 if (!c
->bandwidth_hz
)
1539 c
->bandwidth_hz
= 6000000;
1541 c
->isdbt_partial_reception
= 0;
1542 c
->isdbt_sb_mode
= 0;
1543 c
->isdbt_sb_subchannel
= 0;
1544 c
->isdbt_sb_segment_idx
= 0;
1545 c
->isdbt_sb_segment_count
= 0;
1546 c
->isdbt_layer_enabled
= 7;
1547 for (i
= 0; i
< 3; i
++) {
1548 c
->layer
[i
].fec
= FEC_AUTO
;
1549 c
->layer
[i
].modulation
= QAM_AUTO
;
1550 c
->layer
[i
].interleaving
= 0;
1551 c
->layer
[i
].segment_count
= 0;
1554 dev_dbg(fe
->dvb
->device
, "%s: change delivery system on cache to %d\n",
1555 __func__
, c
->delivery_system
);
1561 * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
1562 * @fe: frontend struct
1563 * @desired_system: delivery system requested by the user
1565 * A DVBv5 call know what's the desired system it wants. So, set it.
1567 * There are, however, a few known issues with early DVBv5 applications that
1568 * are also handled by this logic:
1570 * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
1571 * This is an API violation, but, as we don't want to break userspace,
1572 * convert it to the first supported delivery system.
1573 * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
1574 * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
1575 * ISDB-T provided backward compat with DVB-T.
1577 static int dvbv5_set_delivery_system(struct dvb_frontend
*fe
,
1581 u32 delsys
= SYS_UNDEFINED
;
1582 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1583 enum dvbv3_emulation_type type
;
1586 * It was reported that some old DVBv5 applications were
1587 * filling delivery_system with SYS_UNDEFINED. If this happens,
1588 * assume that the application wants to use the first supported
1591 if (desired_system
== SYS_UNDEFINED
)
1592 desired_system
= fe
->ops
.delsys
[0];
1595 * This is a DVBv5 call. So, it likely knows the supported
1596 * delivery systems. So, check if the desired delivery system is
1600 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1601 if (fe
->ops
.delsys
[ncaps
] == desired_system
) {
1602 c
->delivery_system
= desired_system
;
1603 dev_dbg(fe
->dvb
->device
,
1604 "%s: Changing delivery system to %d\n",
1605 __func__
, desired_system
);
1612 * The requested delivery system isn't supported. Maybe userspace
1613 * is requesting a DVBv3 compatible delivery system.
1615 * The emulation only works if the desired system is one of the
1616 * delivery systems supported by DVBv3 API
1618 if (!is_dvbv3_delsys(desired_system
)) {
1619 dev_dbg(fe
->dvb
->device
,
1620 "%s: Delivery system %d not supported.\n",
1621 __func__
, desired_system
);
1625 type
= dvbv3_type(desired_system
);
1628 * Get the last non-DVBv3 delivery system that has the same type
1629 * of the desired system
1632 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1633 if (dvbv3_type(fe
->ops
.delsys
[ncaps
]) == type
)
1634 delsys
= fe
->ops
.delsys
[ncaps
];
1638 /* There's nothing compatible with the desired delivery system */
1639 if (delsys
== SYS_UNDEFINED
) {
1640 dev_dbg(fe
->dvb
->device
,
1641 "%s: Delivery system %d not supported on emulation mode.\n",
1642 __func__
, desired_system
);
1646 dev_dbg(fe
->dvb
->device
,
1647 "%s: Using delivery system %d emulated as if it were %d\n",
1648 __func__
, delsys
, desired_system
);
1650 return emulate_delivery_system(fe
, desired_system
);
1654 * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
1655 * @fe: frontend struct
1657 * A DVBv3 call doesn't know what's the desired system it wants. It also
1658 * doesn't allow to switch between different types. Due to that, userspace
1659 * should use DVBv5 instead.
1660 * However, in order to avoid breaking userspace API, limited backward
1661 * compatibility support is provided.
1663 * There are some delivery systems that are incompatible with DVBv3 calls.
1665 * This routine should work fine for frontends that support just one delivery
1668 * For frontends that support multiple frontends:
1669 * 1) It defaults to use the first supported delivery system. There's an
1670 * userspace application that allows changing it at runtime;
1672 * 2) If the current delivery system is not compatible with DVBv3, it gets
1673 * the first one that it is compatible.
1675 * NOTE: in order for this to work with applications like Kaffeine that
1676 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1677 * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
1678 * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
1681 static int dvbv3_set_delivery_system(struct dvb_frontend
*fe
)
1684 u32 delsys
= SYS_UNDEFINED
;
1685 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1687 /* If not set yet, defaults to the first supported delivery system */
1688 if (c
->delivery_system
== SYS_UNDEFINED
)
1689 c
->delivery_system
= fe
->ops
.delsys
[0];
1692 * Trivial case: just use the current one, if it already a DVBv3
1695 if (is_dvbv3_delsys(c
->delivery_system
)) {
1696 dev_dbg(fe
->dvb
->device
,
1697 "%s: Using delivery system to %d\n",
1698 __func__
, c
->delivery_system
);
1703 * Seek for the first delivery system that it is compatible with a
1707 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1708 if (dvbv3_type(fe
->ops
.delsys
[ncaps
]) != DVBV3_UNKNOWN
) {
1709 delsys
= fe
->ops
.delsys
[ncaps
];
1714 if (delsys
== SYS_UNDEFINED
) {
1715 dev_dbg(fe
->dvb
->device
,
1716 "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
1720 return emulate_delivery_system(fe
, delsys
);
1723 static int dtv_property_process_set(struct dvb_frontend
*fe
,
1724 struct dtv_property
*tvp
,
1728 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1730 /* Allow the frontend to validate incoming properties */
1731 if (fe
->ops
.set_property
) {
1732 r
= fe
->ops
.set_property(fe
, tvp
);
1740 * Reset a cache of data specific to the frontend here. This does
1741 * not effect hardware.
1743 dvb_frontend_clear_cache(fe
);
1746 /* interpret the cache of data, build either a traditional frontend
1747 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1750 c
->state
= tvp
->cmd
;
1751 dev_dbg(fe
->dvb
->device
, "%s: Finalised property cache\n",
1754 r
= dtv_set_frontend(fe
);
1757 c
->frequency
= tvp
->u
.data
;
1759 case DTV_MODULATION
:
1760 c
->modulation
= tvp
->u
.data
;
1762 case DTV_BANDWIDTH_HZ
:
1763 c
->bandwidth_hz
= tvp
->u
.data
;
1766 c
->inversion
= tvp
->u
.data
;
1768 case DTV_SYMBOL_RATE
:
1769 c
->symbol_rate
= tvp
->u
.data
;
1772 c
->fec_inner
= tvp
->u
.data
;
1775 c
->pilot
= tvp
->u
.data
;
1778 c
->rolloff
= tvp
->u
.data
;
1780 case DTV_DELIVERY_SYSTEM
:
1781 r
= dvbv5_set_delivery_system(fe
, tvp
->u
.data
);
1784 c
->voltage
= tvp
->u
.data
;
1785 r
= dvb_frontend_ioctl_legacy(file
, FE_SET_VOLTAGE
,
1786 (void *)c
->voltage
);
1789 c
->sectone
= tvp
->u
.data
;
1790 r
= dvb_frontend_ioctl_legacy(file
, FE_SET_TONE
,
1791 (void *)c
->sectone
);
1793 case DTV_CODE_RATE_HP
:
1794 c
->code_rate_HP
= tvp
->u
.data
;
1796 case DTV_CODE_RATE_LP
:
1797 c
->code_rate_LP
= tvp
->u
.data
;
1799 case DTV_GUARD_INTERVAL
:
1800 c
->guard_interval
= tvp
->u
.data
;
1802 case DTV_TRANSMISSION_MODE
:
1803 c
->transmission_mode
= tvp
->u
.data
;
1806 c
->hierarchy
= tvp
->u
.data
;
1808 case DTV_INTERLEAVING
:
1809 c
->interleaving
= tvp
->u
.data
;
1812 /* ISDB-T Support here */
1813 case DTV_ISDBT_PARTIAL_RECEPTION
:
1814 c
->isdbt_partial_reception
= tvp
->u
.data
;
1816 case DTV_ISDBT_SOUND_BROADCASTING
:
1817 c
->isdbt_sb_mode
= tvp
->u
.data
;
1819 case DTV_ISDBT_SB_SUBCHANNEL_ID
:
1820 c
->isdbt_sb_subchannel
= tvp
->u
.data
;
1822 case DTV_ISDBT_SB_SEGMENT_IDX
:
1823 c
->isdbt_sb_segment_idx
= tvp
->u
.data
;
1825 case DTV_ISDBT_SB_SEGMENT_COUNT
:
1826 c
->isdbt_sb_segment_count
= tvp
->u
.data
;
1828 case DTV_ISDBT_LAYER_ENABLED
:
1829 c
->isdbt_layer_enabled
= tvp
->u
.data
;
1831 case DTV_ISDBT_LAYERA_FEC
:
1832 c
->layer
[0].fec
= tvp
->u
.data
;
1834 case DTV_ISDBT_LAYERA_MODULATION
:
1835 c
->layer
[0].modulation
= tvp
->u
.data
;
1837 case DTV_ISDBT_LAYERA_SEGMENT_COUNT
:
1838 c
->layer
[0].segment_count
= tvp
->u
.data
;
1840 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING
:
1841 c
->layer
[0].interleaving
= tvp
->u
.data
;
1843 case DTV_ISDBT_LAYERB_FEC
:
1844 c
->layer
[1].fec
= tvp
->u
.data
;
1846 case DTV_ISDBT_LAYERB_MODULATION
:
1847 c
->layer
[1].modulation
= tvp
->u
.data
;
1849 case DTV_ISDBT_LAYERB_SEGMENT_COUNT
:
1850 c
->layer
[1].segment_count
= tvp
->u
.data
;
1852 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING
:
1853 c
->layer
[1].interleaving
= tvp
->u
.data
;
1855 case DTV_ISDBT_LAYERC_FEC
:
1856 c
->layer
[2].fec
= tvp
->u
.data
;
1858 case DTV_ISDBT_LAYERC_MODULATION
:
1859 c
->layer
[2].modulation
= tvp
->u
.data
;
1861 case DTV_ISDBT_LAYERC_SEGMENT_COUNT
:
1862 c
->layer
[2].segment_count
= tvp
->u
.data
;
1864 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING
:
1865 c
->layer
[2].interleaving
= tvp
->u
.data
;
1868 /* Multistream support */
1870 case DTV_DVBT2_PLP_ID_LEGACY
:
1871 c
->stream_id
= tvp
->u
.data
;
1875 case DTV_ATSCMH_PARADE_ID
:
1876 fe
->dtv_property_cache
.atscmh_parade_id
= tvp
->u
.data
;
1878 case DTV_ATSCMH_RS_FRAME_ENSEMBLE
:
1879 fe
->dtv_property_cache
.atscmh_rs_frame_ensemble
= tvp
->u
.data
;
1883 c
->lna
= tvp
->u
.data
;
1884 if (fe
->ops
.set_lna
)
1885 r
= fe
->ops
.set_lna(fe
);
1897 static int dvb_frontend_ioctl(struct file
*file
,
1898 unsigned int cmd
, void *parg
)
1900 struct dvb_device
*dvbdev
= file
->private_data
;
1901 struct dvb_frontend
*fe
= dvbdev
->priv
;
1902 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1903 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
1904 int err
= -EOPNOTSUPP
;
1906 dev_dbg(fe
->dvb
->device
, "%s: (%d)\n", __func__
, _IOC_NR(cmd
));
1907 if (down_interruptible(&fepriv
->sem
))
1908 return -ERESTARTSYS
;
1910 if (fe
->exit
!= DVB_FE_NO_EXIT
) {
1915 if ((file
->f_flags
& O_ACCMODE
) == O_RDONLY
&&
1916 (_IOC_DIR(cmd
) != _IOC_READ
|| cmd
== FE_GET_EVENT
||
1917 cmd
== FE_DISEQC_RECV_SLAVE_REPLY
)) {
1922 if ((cmd
== FE_SET_PROPERTY
) || (cmd
== FE_GET_PROPERTY
))
1923 err
= dvb_frontend_ioctl_properties(file
, cmd
, parg
);
1925 c
->state
= DTV_UNDEFINED
;
1926 err
= dvb_frontend_ioctl_legacy(file
, cmd
, parg
);
1933 static int dvb_frontend_ioctl_properties(struct file
*file
,
1934 unsigned int cmd
, void *parg
)
1936 struct dvb_device
*dvbdev
= file
->private_data
;
1937 struct dvb_frontend
*fe
= dvbdev
->priv
;
1938 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
1939 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1942 struct dtv_properties
*tvps
= parg
;
1943 struct dtv_property
*tvp
= NULL
;
1946 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
1948 if (cmd
== FE_SET_PROPERTY
) {
1949 dev_dbg(fe
->dvb
->device
, "%s: properties.num = %d\n", __func__
, tvps
->num
);
1950 dev_dbg(fe
->dvb
->device
, "%s: properties.props = %p\n", __func__
, tvps
->props
);
1952 /* Put an arbitrary limit on the number of messages that can
1953 * be sent at once */
1954 if ((tvps
->num
== 0) || (tvps
->num
> DTV_IOCTL_MAX_MSGS
))
1957 tvp
= kmalloc(tvps
->num
* sizeof(struct dtv_property
), GFP_KERNEL
);
1963 if (copy_from_user(tvp
, (void __user
*)tvps
->props
,
1964 tvps
->num
* sizeof(struct dtv_property
))) {
1969 for (i
= 0; i
< tvps
->num
; i
++) {
1970 err
= dtv_property_process_set(fe
, tvp
+ i
, file
);
1973 (tvp
+ i
)->result
= err
;
1976 if (c
->state
== DTV_TUNE
)
1977 dev_dbg(fe
->dvb
->device
, "%s: Property cache is full, tuning\n", __func__
);
1979 } else if (cmd
== FE_GET_PROPERTY
) {
1980 dev_dbg(fe
->dvb
->device
, "%s: properties.num = %d\n", __func__
, tvps
->num
);
1981 dev_dbg(fe
->dvb
->device
, "%s: properties.props = %p\n", __func__
, tvps
->props
);
1983 /* Put an arbitrary limit on the number of messages that can
1984 * be sent at once */
1985 if ((tvps
->num
== 0) || (tvps
->num
> DTV_IOCTL_MAX_MSGS
))
1988 tvp
= kmalloc(tvps
->num
* sizeof(struct dtv_property
), GFP_KERNEL
);
1994 if (copy_from_user(tvp
, (void __user
*)tvps
->props
,
1995 tvps
->num
* sizeof(struct dtv_property
))) {
2001 * Fills the cache out struct with the cache contents, plus
2002 * the data retrieved from get_frontend, if the frontend
2003 * is not idle. Otherwise, returns the cached content
2005 if (fepriv
->state
!= FESTATE_IDLE
) {
2006 err
= dtv_get_frontend(fe
, NULL
);
2010 for (i
= 0; i
< tvps
->num
; i
++) {
2011 err
= dtv_property_process_get(fe
, c
, tvp
+ i
, file
);
2014 (tvp
+ i
)->result
= err
;
2017 if (copy_to_user((void __user
*)tvps
->props
, tvp
,
2018 tvps
->num
* sizeof(struct dtv_property
))) {
2031 static int dtv_set_frontend(struct dvb_frontend
*fe
)
2033 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2034 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
2035 struct dvb_frontend_tune_settings fetunesettings
;
2038 if (dvb_frontend_check_parameters(fe
) < 0)
2042 * Initialize output parameters to match the values given by
2043 * the user. FE_SET_FRONTEND triggers an initial frontend event
2044 * with status = 0, which copies output parameters to userspace.
2046 dtv_property_legacy_params_sync(fe
, &fepriv
->parameters_out
);
2049 * Be sure that the bandwidth will be filled for all
2050 * non-satellite systems, as tuners need to know what
2051 * low pass/Nyquist half filter should be applied, in
2052 * order to avoid inter-channel noise.
2054 * ISDB-T and DVB-T/T2 already sets bandwidth.
2055 * ATSC and DVB-C don't set, so, the core should fill it.
2057 * On DVB-C Annex A and C, the bandwidth is a function of
2058 * the roll-off and symbol rate. Annex B defines different
2059 * roll-off factors depending on the modulation. Fortunately,
2060 * Annex B is only used with 6MHz, so there's no need to
2063 * While not officially supported, a side effect of handling it at
2064 * the cache level is that a program could retrieve the bandwidth
2065 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
2067 switch (c
->delivery_system
) {
2069 case SYS_DVBC_ANNEX_B
:
2070 c
->bandwidth_hz
= 6000000;
2072 case SYS_DVBC_ANNEX_A
:
2075 case SYS_DVBC_ANNEX_C
:
2084 switch (c
->rolloff
) {
2100 c
->bandwidth_hz
= (c
->symbol_rate
* rolloff
) / 100;
2102 /* force auto frequency inversion if requested */
2103 if (dvb_force_auto_inversion
)
2104 c
->inversion
= INVERSION_AUTO
;
2107 * without hierarchical coding code_rate_LP is irrelevant,
2108 * so we tolerate the otherwise invalid FEC_NONE setting
2110 if (c
->hierarchy
== HIERARCHY_NONE
&& c
->code_rate_LP
== FEC_NONE
)
2111 c
->code_rate_LP
= FEC_AUTO
;
2113 /* get frontend-specific tuning settings */
2114 memset(&fetunesettings
, 0, sizeof(struct dvb_frontend_tune_settings
));
2115 if (fe
->ops
.get_tune_settings
&& (fe
->ops
.get_tune_settings(fe
, &fetunesettings
) == 0)) {
2116 fepriv
->min_delay
= (fetunesettings
.min_delay_ms
* HZ
) / 1000;
2117 fepriv
->max_drift
= fetunesettings
.max_drift
;
2118 fepriv
->step_size
= fetunesettings
.step_size
;
2120 /* default values */
2121 switch (c
->delivery_system
) {
2126 case SYS_DVBC_ANNEX_A
:
2127 case SYS_DVBC_ANNEX_C
:
2128 fepriv
->min_delay
= HZ
/ 20;
2129 fepriv
->step_size
= c
->symbol_rate
/ 16000;
2130 fepriv
->max_drift
= c
->symbol_rate
/ 2000;
2136 fepriv
->min_delay
= HZ
/ 20;
2137 fepriv
->step_size
= fe
->ops
.info
.frequency_stepsize
* 2;
2138 fepriv
->max_drift
= (fe
->ops
.info
.frequency_stepsize
* 2) + 1;
2142 * FIXME: This sounds wrong! if freqency_stepsize is
2143 * defined by the frontend, why not use it???
2145 fepriv
->min_delay
= HZ
/ 20;
2146 fepriv
->step_size
= 0; /* no zigzag */
2147 fepriv
->max_drift
= 0;
2151 if (dvb_override_tune_delay
> 0)
2152 fepriv
->min_delay
= (dvb_override_tune_delay
* HZ
) / 1000;
2154 fepriv
->state
= FESTATE_RETUNE
;
2156 /* Request the search algorithm to search */
2157 fepriv
->algo_status
|= DVBFE_ALGO_SEARCH_AGAIN
;
2159 dvb_frontend_clear_events(fe
);
2160 dvb_frontend_add_event(fe
, 0);
2161 dvb_frontend_wakeup(fe
);
2168 static int dvb_frontend_ioctl_legacy(struct file
*file
,
2169 unsigned int cmd
, void *parg
)
2171 struct dvb_device
*dvbdev
= file
->private_data
;
2172 struct dvb_frontend
*fe
= dvbdev
->priv
;
2173 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2174 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
2175 int err
= -EOPNOTSUPP
;
2179 struct dvb_frontend_info
* info
= parg
;
2181 memcpy(info
, &fe
->ops
.info
, sizeof(struct dvb_frontend_info
));
2182 dvb_frontend_get_frequency_limits(fe
, &info
->frequency_min
, &info
->frequency_max
);
2185 * Associate the 4 delivery systems supported by DVBv3
2186 * API with their DVBv5 counterpart. For the other standards,
2187 * use the closest type, assuming that it would hopefully
2188 * work with a DVBv3 application.
2189 * It should be noticed that, on multi-frontend devices with
2190 * different types (terrestrial and cable, for example),
2191 * a pure DVBv3 application won't be able to use all delivery
2192 * systems. Yet, changing the DVBv5 cache to the other delivery
2193 * system should be enough for making it work.
2195 switch (dvbv3_type(c
->delivery_system
)) {
2197 info
->type
= FE_QPSK
;
2200 info
->type
= FE_ATSC
;
2203 info
->type
= FE_QAM
;
2206 info
->type
= FE_OFDM
;
2209 dev_err(fe
->dvb
->device
,
2210 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
2211 __func__
, c
->delivery_system
);
2212 fe
->ops
.info
.type
= FE_OFDM
;
2214 dev_dbg(fe
->dvb
->device
, "%s: current delivery system on cache: %d, V3 type: %d\n",
2215 __func__
, c
->delivery_system
, fe
->ops
.info
.type
);
2217 /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't
2218 * do it, it is done for it. */
2219 info
->caps
|= FE_CAN_INVERSION_AUTO
;
2224 case FE_READ_STATUS
: {
2225 fe_status_t
* status
= parg
;
2227 /* if retune was requested but hasn't occurred yet, prevent
2228 * that user get signal state from previous tuning */
2229 if (fepriv
->state
== FESTATE_RETUNE
||
2230 fepriv
->state
== FESTATE_ERROR
) {
2236 if (fe
->ops
.read_status
)
2237 err
= fe
->ops
.read_status(fe
, status
);
2242 if (fe
->ops
.read_ber
) {
2244 err
= fe
->ops
.read_ber(fe
, (__u32
*) parg
);
2250 case FE_READ_SIGNAL_STRENGTH
:
2251 if (fe
->ops
.read_signal_strength
) {
2253 err
= fe
->ops
.read_signal_strength(fe
, (__u16
*) parg
);
2260 if (fe
->ops
.read_snr
) {
2262 err
= fe
->ops
.read_snr(fe
, (__u16
*) parg
);
2268 case FE_READ_UNCORRECTED_BLOCKS
:
2269 if (fe
->ops
.read_ucblocks
) {
2271 err
= fe
->ops
.read_ucblocks(fe
, (__u32
*) parg
);
2277 case FE_DISEQC_RESET_OVERLOAD
:
2278 if (fe
->ops
.diseqc_reset_overload
) {
2279 err
= fe
->ops
.diseqc_reset_overload(fe
);
2280 fepriv
->state
= FESTATE_DISEQC
;
2285 case FE_DISEQC_SEND_MASTER_CMD
:
2286 if (fe
->ops
.diseqc_send_master_cmd
) {
2287 err
= fe
->ops
.diseqc_send_master_cmd(fe
, (struct dvb_diseqc_master_cmd
*) parg
);
2288 fepriv
->state
= FESTATE_DISEQC
;
2293 case FE_DISEQC_SEND_BURST
:
2294 if (fe
->ops
.diseqc_send_burst
) {
2295 err
= fe
->ops
.diseqc_send_burst(fe
, (fe_sec_mini_cmd_t
) parg
);
2296 fepriv
->state
= FESTATE_DISEQC
;
2302 if (fe
->ops
.set_tone
) {
2303 err
= fe
->ops
.set_tone(fe
, (fe_sec_tone_mode_t
) parg
);
2304 fepriv
->tone
= (fe_sec_tone_mode_t
) parg
;
2305 fepriv
->state
= FESTATE_DISEQC
;
2310 case FE_SET_VOLTAGE
:
2311 if (fe
->ops
.set_voltage
) {
2312 err
= fe
->ops
.set_voltage(fe
, (fe_sec_voltage_t
) parg
);
2313 fepriv
->voltage
= (fe_sec_voltage_t
) parg
;
2314 fepriv
->state
= FESTATE_DISEQC
;
2319 case FE_DISHNETWORK_SEND_LEGACY_CMD
:
2320 if (fe
->ops
.dishnetwork_send_legacy_command
) {
2321 err
= fe
->ops
.dishnetwork_send_legacy_command(fe
, (unsigned long) parg
);
2322 fepriv
->state
= FESTATE_DISEQC
;
2324 } else if (fe
->ops
.set_voltage
) {
2326 * NOTE: This is a fallback condition. Some frontends
2327 * (stv0299 for instance) take longer than 8msec to
2328 * respond to a set_voltage command. Those switches
2329 * need custom routines to switch properly. For all
2330 * other frontends, the following should work ok.
2331 * Dish network legacy switches (as used by Dish500)
2332 * are controlled by sending 9-bit command words
2333 * spaced 8msec apart.
2334 * the actual command word is switch/port dependent
2335 * so it is up to the userspace application to send
2336 * the right command.
2337 * The command must always start with a '0' after
2338 * initialization, so parg is 8 bits and does not
2339 * include the initialization or start bit
2341 unsigned long swcmd
= ((unsigned long) parg
) << 1;
2342 struct timeval nexttime
;
2343 struct timeval tv
[10];
2346 if (dvb_frontend_debug
)
2347 printk("%s switch command: 0x%04lx\n", __func__
, swcmd
);
2348 do_gettimeofday(&nexttime
);
2349 if (dvb_frontend_debug
)
2351 /* before sending a command, initialize by sending
2352 * a 32ms 18V to the switch
2354 fe
->ops
.set_voltage(fe
, SEC_VOLTAGE_18
);
2355 dvb_frontend_sleep_until(&nexttime
, 32000);
2357 for (i
= 0; i
< 9; i
++) {
2358 if (dvb_frontend_debug
)
2359 do_gettimeofday(&tv
[i
+ 1]);
2360 if ((swcmd
& 0x01) != last
) {
2361 /* set voltage to (last ? 13V : 18V) */
2362 fe
->ops
.set_voltage(fe
, (last
) ? SEC_VOLTAGE_13
: SEC_VOLTAGE_18
);
2363 last
= (last
) ? 0 : 1;
2367 dvb_frontend_sleep_until(&nexttime
, 8000);
2369 if (dvb_frontend_debug
) {
2370 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
2371 __func__
, fe
->dvb
->num
);
2372 for (i
= 1; i
< 10; i
++)
2373 printk("%d: %d\n", i
, timeval_usec_diff(tv
[i
-1] , tv
[i
]));
2376 fepriv
->state
= FESTATE_DISEQC
;
2381 case FE_DISEQC_RECV_SLAVE_REPLY
:
2382 if (fe
->ops
.diseqc_recv_slave_reply
)
2383 err
= fe
->ops
.diseqc_recv_slave_reply(fe
, (struct dvb_diseqc_slave_reply
*) parg
);
2386 case FE_ENABLE_HIGH_LNB_VOLTAGE
:
2387 if (fe
->ops
.enable_high_lnb_voltage
)
2388 err
= fe
->ops
.enable_high_lnb_voltage(fe
, (long) parg
);
2391 case FE_SET_FRONTEND
:
2392 err
= dvbv3_set_delivery_system(fe
);
2396 err
= dtv_property_cache_sync(fe
, c
, parg
);
2399 err
= dtv_set_frontend(fe
);
2402 err
= dvb_frontend_get_event (fe
, parg
, file
->f_flags
);
2405 case FE_GET_FRONTEND
:
2406 err
= dtv_get_frontend(fe
, parg
);
2409 case FE_SET_FRONTEND_TUNE_MODE
:
2410 fepriv
->tune_mode_flags
= (unsigned long) parg
;
2419 static unsigned int dvb_frontend_poll(struct file
*file
, struct poll_table_struct
*wait
)
2421 struct dvb_device
*dvbdev
= file
->private_data
;
2422 struct dvb_frontend
*fe
= dvbdev
->priv
;
2423 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2425 dev_dbg_ratelimited(fe
->dvb
->device
, "%s:\n", __func__
);
2427 poll_wait (file
, &fepriv
->events
.wait_queue
, wait
);
2429 if (fepriv
->events
.eventw
!= fepriv
->events
.eventr
)
2430 return (POLLIN
| POLLRDNORM
| POLLPRI
);
2435 static int dvb_frontend_open(struct inode
*inode
, struct file
*file
)
2437 struct dvb_device
*dvbdev
= file
->private_data
;
2438 struct dvb_frontend
*fe
= dvbdev
->priv
;
2439 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2440 struct dvb_adapter
*adapter
= fe
->dvb
;
2443 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2444 if (fe
->exit
== DVB_FE_DEVICE_REMOVED
)
2447 if (adapter
->mfe_shared
) {
2448 mutex_lock (&adapter
->mfe_lock
);
2450 if (adapter
->mfe_dvbdev
== NULL
)
2451 adapter
->mfe_dvbdev
= dvbdev
;
2453 else if (adapter
->mfe_dvbdev
!= dvbdev
) {
2455 *mfedev
= adapter
->mfe_dvbdev
;
2457 *mfe
= mfedev
->priv
;
2458 struct dvb_frontend_private
2459 *mfepriv
= mfe
->frontend_priv
;
2460 int mferetry
= (dvb_mfe_wait_time
<< 1);
2462 mutex_unlock (&adapter
->mfe_lock
);
2463 while (mferetry
-- && (mfedev
->users
!= -1 ||
2464 mfepriv
->thread
!= NULL
)) {
2465 if(msleep_interruptible(500)) {
2466 if(signal_pending(current
))
2471 mutex_lock (&adapter
->mfe_lock
);
2472 if(adapter
->mfe_dvbdev
!= dvbdev
) {
2473 mfedev
= adapter
->mfe_dvbdev
;
2475 mfepriv
= mfe
->frontend_priv
;
2476 if (mfedev
->users
!= -1 ||
2477 mfepriv
->thread
!= NULL
) {
2478 mutex_unlock (&adapter
->mfe_lock
);
2481 adapter
->mfe_dvbdev
= dvbdev
;
2486 if (dvbdev
->users
== -1 && fe
->ops
.ts_bus_ctrl
) {
2487 if ((ret
= fe
->ops
.ts_bus_ctrl(fe
, 1)) < 0)
2490 /* If we took control of the bus, we need to force
2491 reinitialization. This is because many ts_bus_ctrl()
2492 functions strobe the RESET pin on the demod, and if the
2493 frontend thread already exists then the dvb_init() routine
2494 won't get called (which is what usually does initial
2495 register configuration). */
2496 fepriv
->reinitialise
= 1;
2499 if ((ret
= dvb_generic_open (inode
, file
)) < 0)
2502 if ((file
->f_flags
& O_ACCMODE
) != O_RDONLY
) {
2503 /* normal tune mode when opened R/W */
2504 fepriv
->tune_mode_flags
&= ~FE_TUNE_MODE_ONESHOT
;
2506 fepriv
->voltage
= -1;
2508 ret
= dvb_frontend_start (fe
);
2512 /* empty event queue */
2513 fepriv
->events
.eventr
= fepriv
->events
.eventw
= 0;
2516 if (adapter
->mfe_shared
)
2517 mutex_unlock (&adapter
->mfe_lock
);
2521 dvb_generic_release(inode
, file
);
2523 if (dvbdev
->users
== -1 && fe
->ops
.ts_bus_ctrl
)
2524 fe
->ops
.ts_bus_ctrl(fe
, 0);
2526 if (adapter
->mfe_shared
)
2527 mutex_unlock (&adapter
->mfe_lock
);
2531 static int dvb_frontend_release(struct inode
*inode
, struct file
*file
)
2533 struct dvb_device
*dvbdev
= file
->private_data
;
2534 struct dvb_frontend
*fe
= dvbdev
->priv
;
2535 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2538 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2540 if ((file
->f_flags
& O_ACCMODE
) != O_RDONLY
) {
2541 fepriv
->release_jiffies
= jiffies
;
2545 ret
= dvb_generic_release (inode
, file
);
2547 if (dvbdev
->users
== -1) {
2548 wake_up(&fepriv
->wait_queue
);
2549 if (fe
->exit
!= DVB_FE_NO_EXIT
)
2550 wake_up(&dvbdev
->wait_queue
);
2551 if (fe
->ops
.ts_bus_ctrl
)
2552 fe
->ops
.ts_bus_ctrl(fe
, 0);
2558 static const struct file_operations dvb_frontend_fops
= {
2559 .owner
= THIS_MODULE
,
2560 .unlocked_ioctl
= dvb_generic_ioctl
,
2561 .poll
= dvb_frontend_poll
,
2562 .open
= dvb_frontend_open
,
2563 .release
= dvb_frontend_release
,
2564 .llseek
= noop_llseek
,
2567 int dvb_frontend_suspend(struct dvb_frontend
*fe
)
2571 dev_dbg(fe
->dvb
->device
, "%s: adap=%d fe=%d\n", __func__
, fe
->dvb
->num
,
2574 if (fe
->ops
.tuner_ops
.suspend
)
2575 ret
= fe
->ops
.tuner_ops
.suspend(fe
);
2576 else if (fe
->ops
.tuner_ops
.sleep
)
2577 ret
= fe
->ops
.tuner_ops
.sleep(fe
);
2580 ret
= fe
->ops
.sleep(fe
);
2584 EXPORT_SYMBOL(dvb_frontend_suspend
);
2586 int dvb_frontend_resume(struct dvb_frontend
*fe
)
2588 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2591 dev_dbg(fe
->dvb
->device
, "%s: adap=%d fe=%d\n", __func__
, fe
->dvb
->num
,
2594 fe
->exit
= DVB_FE_DEVICE_RESUME
;
2596 ret
= fe
->ops
.init(fe
);
2598 if (fe
->ops
.tuner_ops
.resume
)
2599 ret
= fe
->ops
.tuner_ops
.resume(fe
);
2600 else if (fe
->ops
.tuner_ops
.init
)
2601 ret
= fe
->ops
.tuner_ops
.init(fe
);
2603 fe
->exit
= DVB_FE_NO_EXIT
;
2604 fepriv
->state
= FESTATE_RETUNE
;
2605 dvb_frontend_wakeup(fe
);
2609 EXPORT_SYMBOL(dvb_frontend_resume
);
2611 int dvb_register_frontend(struct dvb_adapter
* dvb
,
2612 struct dvb_frontend
* fe
)
2614 struct dvb_frontend_private
*fepriv
;
2615 static const struct dvb_device dvbdev_template
= {
2619 .fops
= &dvb_frontend_fops
,
2620 .kernel_ioctl
= dvb_frontend_ioctl
2623 dev_dbg(dvb
->device
, "%s:\n", __func__
);
2625 if (mutex_lock_interruptible(&frontend_mutex
))
2626 return -ERESTARTSYS
;
2628 fe
->frontend_priv
= kzalloc(sizeof(struct dvb_frontend_private
), GFP_KERNEL
);
2629 if (fe
->frontend_priv
== NULL
) {
2630 mutex_unlock(&frontend_mutex
);
2633 fepriv
= fe
->frontend_priv
;
2635 sema_init(&fepriv
->sem
, 1);
2636 init_waitqueue_head (&fepriv
->wait_queue
);
2637 init_waitqueue_head (&fepriv
->events
.wait_queue
);
2638 mutex_init(&fepriv
->events
.mtx
);
2640 fepriv
->inversion
= INVERSION_OFF
;
2642 dev_info(fe
->dvb
->device
,
2643 "DVB: registering adapter %i frontend %i (%s)...\n",
2644 fe
->dvb
->num
, fe
->id
, fe
->ops
.info
.name
);
2646 dvb_register_device (fe
->dvb
, &fepriv
->dvbdev
, &dvbdev_template
,
2647 fe
, DVB_DEVICE_FRONTEND
);
2650 * Initialize the cache to the proper values according with the
2651 * first supported delivery system (ops->delsys[0])
2654 fe
->dtv_property_cache
.delivery_system
= fe
->ops
.delsys
[0];
2655 dvb_frontend_clear_cache(fe
);
2657 mutex_unlock(&frontend_mutex
);
2660 EXPORT_SYMBOL(dvb_register_frontend
);
2662 int dvb_unregister_frontend(struct dvb_frontend
* fe
)
2664 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2665 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2667 mutex_lock(&frontend_mutex
);
2668 dvb_frontend_stop (fe
);
2669 mutex_unlock(&frontend_mutex
);
2671 if (fepriv
->dvbdev
->users
< -1)
2672 wait_event(fepriv
->dvbdev
->wait_queue
,
2673 fepriv
->dvbdev
->users
==-1);
2675 mutex_lock(&frontend_mutex
);
2676 dvb_unregister_device (fepriv
->dvbdev
);
2678 /* fe is invalid now */
2680 mutex_unlock(&frontend_mutex
);
2683 EXPORT_SYMBOL(dvb_unregister_frontend
);
2685 #ifdef CONFIG_MEDIA_ATTACH
2686 void dvb_frontend_detach(struct dvb_frontend
* fe
)
2690 if (fe
->ops
.release_sec
) {
2691 fe
->ops
.release_sec(fe
);
2692 dvb_detach(fe
->ops
.release_sec
);
2694 if (fe
->ops
.tuner_ops
.release
) {
2695 fe
->ops
.tuner_ops
.release(fe
);
2696 dvb_detach(fe
->ops
.tuner_ops
.release
);
2698 if (fe
->ops
.analog_ops
.release
) {
2699 fe
->ops
.analog_ops
.release(fe
);
2700 dvb_detach(fe
->ops
.analog_ops
.release
);
2702 ptr
= (void*)fe
->ops
.release
;
2704 fe
->ops
.release(fe
);
2709 void dvb_frontend_detach(struct dvb_frontend
* fe
)
2711 if (fe
->ops
.release_sec
)
2712 fe
->ops
.release_sec(fe
);
2713 if (fe
->ops
.tuner_ops
.release
)
2714 fe
->ops
.tuner_ops
.release(fe
);
2715 if (fe
->ops
.analog_ops
.release
)
2716 fe
->ops
.analog_ops
.release(fe
);
2717 if (fe
->ops
.release
)
2718 fe
->ops
.release(fe
);
2721 EXPORT_SYMBOL(dvb_frontend_detach
);