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 <linux/ktime.h>
44 #include <asm/processor.h>
46 #include "dvb_frontend.h"
48 #include <linux/dvb/version.h>
50 static int dvb_frontend_debug
;
51 static int dvb_shutdown_timeout
;
52 static int dvb_force_auto_inversion
;
53 static int dvb_override_tune_delay
;
54 static int dvb_powerdown_on_sleep
= 1;
55 static int dvb_mfe_wait_time
= 5;
57 module_param_named(frontend_debug
, dvb_frontend_debug
, int, 0644);
58 MODULE_PARM_DESC(frontend_debug
, "Turn on/off frontend core debugging (default:off).");
59 module_param(dvb_shutdown_timeout
, int, 0644);
60 MODULE_PARM_DESC(dvb_shutdown_timeout
, "wait <shutdown_timeout> seconds after close() before suspending hardware");
61 module_param(dvb_force_auto_inversion
, int, 0644);
62 MODULE_PARM_DESC(dvb_force_auto_inversion
, "0: normal (default), 1: INVERSION_AUTO forced always");
63 module_param(dvb_override_tune_delay
, int, 0644);
64 MODULE_PARM_DESC(dvb_override_tune_delay
, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt");
65 module_param(dvb_powerdown_on_sleep
, int, 0644);
66 MODULE_PARM_DESC(dvb_powerdown_on_sleep
, "0: do not power down, 1: turn LNB voltage off on sleep (default)");
67 module_param(dvb_mfe_wait_time
, int, 0644);
68 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)");
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
78 #define FESTATE_ERROR 256
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)
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
;
113 enum fe_status status
;
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
;
135 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
136 struct media_pipeline pipe
;
140 static void dvb_frontend_wakeup(struct dvb_frontend
*fe
);
141 static int dtv_get_frontend(struct dvb_frontend
*fe
,
142 struct dtv_frontend_properties
*c
,
143 struct dvb_frontend_parameters
*p_out
);
145 dtv_property_legacy_params_sync(struct dvb_frontend
*fe
,
146 const struct dtv_frontend_properties
*c
,
147 struct dvb_frontend_parameters
*p
);
149 static bool has_get_frontend(struct dvb_frontend
*fe
)
151 return fe
->ops
.get_frontend
!= NULL
;
155 * Due to DVBv3 API calls, a delivery system should be mapped into one of
156 * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
157 * otherwise, a DVBv3 call will fail.
159 enum dvbv3_emulation_type
{
167 static enum dvbv3_emulation_type
dvbv3_type(u32 delivery_system
)
169 switch (delivery_system
) {
170 case SYS_DVBC_ANNEX_A
:
171 case SYS_DVBC_ANNEX_C
:
186 case SYS_DVBC_ANNEX_B
:
194 * Doesn't know how to emulate those types and/or
195 * there's no frontend driver from this type yet
196 * with some emulation code, so, we're not sure yet how
197 * to handle them, or they're not compatible with a DVBv3 call.
199 return DVBV3_UNKNOWN
;
203 static void dvb_frontend_add_event(struct dvb_frontend
*fe
,
204 enum fe_status status
)
206 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
207 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
208 struct dvb_fe_events
*events
= &fepriv
->events
;
209 struct dvb_frontend_event
*e
;
212 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
214 if ((status
& FE_HAS_LOCK
) && has_get_frontend(fe
))
215 dtv_get_frontend(fe
, c
, &fepriv
->parameters_out
);
217 mutex_lock(&events
->mtx
);
219 wp
= (events
->eventw
+ 1) % MAX_EVENT
;
220 if (wp
== events
->eventr
) {
221 events
->overflow
= 1;
222 events
->eventr
= (events
->eventr
+ 1) % MAX_EVENT
;
225 e
= &events
->events
[events
->eventw
];
227 e
->parameters
= fepriv
->parameters_out
;
231 mutex_unlock(&events
->mtx
);
233 wake_up_interruptible (&events
->wait_queue
);
236 static int dvb_frontend_get_event(struct dvb_frontend
*fe
,
237 struct dvb_frontend_event
*event
, int flags
)
239 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
240 struct dvb_fe_events
*events
= &fepriv
->events
;
242 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
244 if (events
->overflow
) {
245 events
->overflow
= 0;
249 if (events
->eventw
== events
->eventr
) {
252 if (flags
& O_NONBLOCK
)
257 ret
= wait_event_interruptible (events
->wait_queue
,
258 events
->eventw
!= events
->eventr
);
260 if (down_interruptible (&fepriv
->sem
))
267 mutex_lock(&events
->mtx
);
268 *event
= events
->events
[events
->eventr
];
269 events
->eventr
= (events
->eventr
+ 1) % MAX_EVENT
;
270 mutex_unlock(&events
->mtx
);
275 static void dvb_frontend_clear_events(struct dvb_frontend
*fe
)
277 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
278 struct dvb_fe_events
*events
= &fepriv
->events
;
280 mutex_lock(&events
->mtx
);
281 events
->eventr
= events
->eventw
;
282 mutex_unlock(&events
->mtx
);
285 static void dvb_frontend_init(struct dvb_frontend
*fe
)
287 dev_dbg(fe
->dvb
->device
,
288 "%s: initialising adapter %i frontend %i (%s)...\n",
289 __func__
, fe
->dvb
->num
, fe
->id
, fe
->ops
.info
.name
);
293 if (fe
->ops
.tuner_ops
.init
) {
294 if (fe
->ops
.i2c_gate_ctrl
)
295 fe
->ops
.i2c_gate_ctrl(fe
, 1);
296 fe
->ops
.tuner_ops
.init(fe
);
297 if (fe
->ops
.i2c_gate_ctrl
)
298 fe
->ops
.i2c_gate_ctrl(fe
, 0);
302 void dvb_frontend_reinitialise(struct dvb_frontend
*fe
)
304 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
306 fepriv
->reinitialise
= 1;
307 dvb_frontend_wakeup(fe
);
309 EXPORT_SYMBOL(dvb_frontend_reinitialise
);
311 static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private
*fepriv
, int locked
)
314 struct dvb_frontend
*fe
= fepriv
->dvbdev
->priv
;
316 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
319 (fepriv
->quality
) = (fepriv
->quality
* 220 + 36*256) / 256;
321 (fepriv
->quality
) = (fepriv
->quality
* 220 + 0) / 256;
323 q2
= fepriv
->quality
- 128;
326 fepriv
->delay
= fepriv
->min_delay
+ q2
* HZ
/ (128*128);
330 * Performs automatic twiddling of frontend parameters.
332 * @param fe The frontend concerned.
333 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
334 * @returns Number of complete iterations that have been performed.
336 static int dvb_frontend_swzigzag_autotune(struct dvb_frontend
*fe
, int check_wrapped
)
341 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
342 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
, tmp
;
343 int original_inversion
= c
->inversion
;
344 u32 original_frequency
= c
->frequency
;
346 /* are we using autoinversion? */
347 autoinversion
= ((!(fe
->ops
.info
.caps
& FE_CAN_INVERSION_AUTO
)) &&
348 (c
->inversion
== INVERSION_AUTO
));
350 /* setup parameters correctly */
352 /* calculate the lnb_drift */
353 fepriv
->lnb_drift
= fepriv
->auto_step
* fepriv
->step_size
;
355 /* wrap the auto_step if we've exceeded the maximum drift */
356 if (fepriv
->lnb_drift
> fepriv
->max_drift
) {
357 fepriv
->auto_step
= 0;
358 fepriv
->auto_sub_step
= 0;
359 fepriv
->lnb_drift
= 0;
362 /* perform inversion and +/- zigzag */
363 switch(fepriv
->auto_sub_step
) {
365 /* try with the current inversion and current drift setting */
370 if (!autoinversion
) break;
372 fepriv
->inversion
= (fepriv
->inversion
== INVERSION_OFF
) ? INVERSION_ON
: INVERSION_OFF
;
377 if (fepriv
->lnb_drift
== 0) break;
379 fepriv
->lnb_drift
= -fepriv
->lnb_drift
;
384 if (fepriv
->lnb_drift
== 0) break;
385 if (!autoinversion
) break;
387 fepriv
->inversion
= (fepriv
->inversion
== INVERSION_OFF
) ? INVERSION_ON
: INVERSION_OFF
;
388 fepriv
->lnb_drift
= -fepriv
->lnb_drift
;
394 fepriv
->auto_sub_step
= -1; /* it'll be incremented to 0 in a moment */
398 if (!ready
) fepriv
->auto_sub_step
++;
401 /* if this attempt would hit where we started, indicate a complete
402 * iteration has occurred */
403 if ((fepriv
->auto_step
== fepriv
->started_auto_step
) &&
404 (fepriv
->auto_sub_step
== 0) && check_wrapped
) {
408 dev_dbg(fe
->dvb
->device
, "%s: drift:%i inversion:%i auto_step:%i " \
409 "auto_sub_step:%i started_auto_step:%i\n",
410 __func__
, fepriv
->lnb_drift
, fepriv
->inversion
,
411 fepriv
->auto_step
, fepriv
->auto_sub_step
,
412 fepriv
->started_auto_step
);
414 /* set the frontend itself */
415 c
->frequency
+= fepriv
->lnb_drift
;
417 c
->inversion
= fepriv
->inversion
;
419 if (fe
->ops
.set_frontend
)
420 fe_set_err
= fe
->ops
.set_frontend(fe
);
422 if (fe_set_err
< 0) {
423 fepriv
->state
= FESTATE_ERROR
;
427 c
->frequency
= original_frequency
;
428 c
->inversion
= original_inversion
;
430 fepriv
->auto_sub_step
++;
434 static void dvb_frontend_swzigzag(struct dvb_frontend
*fe
)
436 enum fe_status s
= 0;
438 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
439 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
, tmp
;
441 /* if we've got no parameters, just keep idling */
442 if (fepriv
->state
& FESTATE_IDLE
) {
443 fepriv
->delay
= 3*HZ
;
448 /* in SCAN mode, we just set the frontend when asked and leave it alone */
449 if (fepriv
->tune_mode_flags
& FE_TUNE_MODE_ONESHOT
) {
450 if (fepriv
->state
& FESTATE_RETUNE
) {
452 if (fe
->ops
.set_frontend
)
453 retval
= fe
->ops
.set_frontend(fe
);
456 fepriv
->state
= FESTATE_ERROR
;
458 fepriv
->state
= FESTATE_TUNED
;
460 fepriv
->delay
= 3*HZ
;
465 /* get the frontend status */
466 if (fepriv
->state
& FESTATE_RETUNE
) {
469 if (fe
->ops
.read_status
)
470 fe
->ops
.read_status(fe
, &s
);
471 if (s
!= fepriv
->status
) {
472 dvb_frontend_add_event(fe
, s
);
477 /* if we're not tuned, and we have a lock, move to the TUNED state */
478 if ((fepriv
->state
& FESTATE_WAITFORLOCK
) && (s
& FE_HAS_LOCK
)) {
479 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
480 fepriv
->state
= FESTATE_TUNED
;
482 /* if we're tuned, then we have determined the correct inversion */
483 if ((!(fe
->ops
.info
.caps
& FE_CAN_INVERSION_AUTO
)) &&
484 (c
->inversion
== INVERSION_AUTO
)) {
485 c
->inversion
= fepriv
->inversion
;
490 /* if we are tuned already, check we're still locked */
491 if (fepriv
->state
& FESTATE_TUNED
) {
492 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
494 /* we're tuned, and the lock is still good... */
495 if (s
& FE_HAS_LOCK
) {
497 } else { /* if we _WERE_ tuned, but now don't have a lock */
498 fepriv
->state
= FESTATE_ZIGZAG_FAST
;
499 fepriv
->started_auto_step
= fepriv
->auto_step
;
500 fepriv
->check_wrapped
= 0;
504 /* don't actually do anything if we're in the LOSTLOCK state,
505 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
506 if ((fepriv
->state
& FESTATE_LOSTLOCK
) &&
507 (fe
->ops
.info
.caps
& FE_CAN_RECOVER
) && (fepriv
->max_drift
== 0)) {
508 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
512 /* don't do anything if we're in the DISEQC state, since this
513 * might be someone with a motorized dish controlled by DISEQC.
514 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
515 if (fepriv
->state
& FESTATE_DISEQC
) {
516 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
520 /* if we're in the RETUNE state, set everything up for a brand
521 * new scan, keeping the current inversion setting, as the next
522 * tune is _very_ likely to require the same */
523 if (fepriv
->state
& FESTATE_RETUNE
) {
524 fepriv
->lnb_drift
= 0;
525 fepriv
->auto_step
= 0;
526 fepriv
->auto_sub_step
= 0;
527 fepriv
->started_auto_step
= 0;
528 fepriv
->check_wrapped
= 0;
532 if ((fepriv
->state
& FESTATE_SEARCHING_FAST
) || (fepriv
->state
& FESTATE_RETUNE
)) {
533 fepriv
->delay
= fepriv
->min_delay
;
536 retval
= dvb_frontend_swzigzag_autotune(fe
,
537 fepriv
->check_wrapped
);
541 /* OK, if we've run out of trials at the fast speed.
542 * Drop back to slow for the _next_ attempt */
543 fepriv
->state
= FESTATE_SEARCHING_SLOW
;
544 fepriv
->started_auto_step
= fepriv
->auto_step
;
547 fepriv
->check_wrapped
= 1;
549 /* if we've just retuned, enter the ZIGZAG_FAST state.
550 * This ensures we cannot return from an
551 * FE_SET_FRONTEND ioctl before the first frontend tune
553 if (fepriv
->state
& FESTATE_RETUNE
) {
554 fepriv
->state
= FESTATE_TUNING_FAST
;
559 if (fepriv
->state
& FESTATE_SEARCHING_SLOW
) {
560 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
562 /* Note: don't bother checking for wrapping; we stay in this
563 * state until we get a lock */
564 dvb_frontend_swzigzag_autotune(fe
, 0);
568 static int dvb_frontend_is_exiting(struct dvb_frontend
*fe
)
570 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
572 if (fe
->exit
!= DVB_FE_NO_EXIT
)
575 if (fepriv
->dvbdev
->writers
== 1)
576 if (time_after_eq(jiffies
, fepriv
->release_jiffies
+
577 dvb_shutdown_timeout
* HZ
))
583 static int dvb_frontend_should_wakeup(struct dvb_frontend
*fe
)
585 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
587 if (fepriv
->wakeup
) {
591 return dvb_frontend_is_exiting(fe
);
594 static void dvb_frontend_wakeup(struct dvb_frontend
*fe
)
596 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
599 wake_up_interruptible(&fepriv
->wait_queue
);
602 static int dvb_frontend_thread(void *data
)
604 struct dvb_frontend
*fe
= data
;
605 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
606 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
608 enum dvbfe_algo algo
;
609 bool re_tune
= false;
610 bool semheld
= false;
612 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
614 fepriv
->check_wrapped
= 0;
616 fepriv
->delay
= 3*HZ
;
619 fepriv
->reinitialise
= 0;
621 dvb_frontend_init(fe
);
625 up(&fepriv
->sem
); /* is locked when we enter the thread... */
627 wait_event_interruptible_timeout(fepriv
->wait_queue
,
628 dvb_frontend_should_wakeup(fe
) || kthread_should_stop()
629 || freezing(current
),
632 if (kthread_should_stop() || dvb_frontend_is_exiting(fe
)) {
633 /* got signal or quitting */
634 if (!down_interruptible(&fepriv
->sem
))
636 fe
->exit
= DVB_FE_NORMAL_EXIT
;
643 if (down_interruptible(&fepriv
->sem
))
646 if (fepriv
->reinitialise
) {
647 dvb_frontend_init(fe
);
648 if (fe
->ops
.set_tone
&& fepriv
->tone
!= -1)
649 fe
->ops
.set_tone(fe
, fepriv
->tone
);
650 if (fe
->ops
.set_voltage
&& fepriv
->voltage
!= -1)
651 fe
->ops
.set_voltage(fe
, fepriv
->voltage
);
652 fepriv
->reinitialise
= 0;
655 /* do an iteration of the tuning loop */
656 if (fe
->ops
.get_frontend_algo
) {
657 algo
= fe
->ops
.get_frontend_algo(fe
);
660 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__
);
662 if (fepriv
->state
& FESTATE_RETUNE
) {
663 dev_dbg(fe
->dvb
->device
, "%s: Retune requested, FESTATE_RETUNE\n", __func__
);
665 fepriv
->state
= FESTATE_TUNED
;
671 fe
->ops
.tune(fe
, re_tune
, fepriv
->tune_mode_flags
, &fepriv
->delay
, &s
);
673 if (s
!= fepriv
->status
&& !(fepriv
->tune_mode_flags
& FE_TUNE_MODE_ONESHOT
)) {
674 dev_dbg(fe
->dvb
->device
, "%s: state changed, adding current state\n", __func__
);
675 dvb_frontend_add_event(fe
, s
);
680 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__
);
681 dvb_frontend_swzigzag(fe
);
683 case DVBFE_ALGO_CUSTOM
:
684 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__
, fepriv
->state
);
685 if (fepriv
->state
& FESTATE_RETUNE
) {
686 dev_dbg(fe
->dvb
->device
, "%s: Retune requested, FESTAT_RETUNE\n", __func__
);
687 fepriv
->state
= FESTATE_TUNED
;
689 /* Case where we are going to search for a carrier
690 * User asked us to retune again for some reason, possibly
691 * requesting a search with a new set of parameters
693 if (fepriv
->algo_status
& DVBFE_ALGO_SEARCH_AGAIN
) {
694 if (fe
->ops
.search
) {
695 fepriv
->algo_status
= fe
->ops
.search(fe
);
696 /* We did do a search as was requested, the flags are
697 * now unset as well and has the flags wrt to search.
700 fepriv
->algo_status
&= ~DVBFE_ALGO_SEARCH_AGAIN
;
703 /* Track the carrier if the search was successful */
704 if (fepriv
->algo_status
!= DVBFE_ALGO_SEARCH_SUCCESS
) {
705 fepriv
->algo_status
|= DVBFE_ALGO_SEARCH_AGAIN
;
706 fepriv
->delay
= HZ
/ 2;
708 dtv_property_legacy_params_sync(fe
, c
, &fepriv
->parameters_out
);
709 fe
->ops
.read_status(fe
, &s
);
710 if (s
!= fepriv
->status
) {
711 dvb_frontend_add_event(fe
, s
); /* update event list */
713 if (!(s
& FE_HAS_LOCK
)) {
714 fepriv
->delay
= HZ
/ 10;
715 fepriv
->algo_status
|= DVBFE_ALGO_SEARCH_AGAIN
;
717 fepriv
->delay
= 60 * HZ
;
722 dev_dbg(fe
->dvb
->device
, "%s: UNDEFINED ALGO !\n", __func__
);
726 dvb_frontend_swzigzag(fe
);
730 if (dvb_powerdown_on_sleep
) {
731 if (fe
->ops
.set_voltage
)
732 fe
->ops
.set_voltage(fe
, SEC_VOLTAGE_OFF
);
733 if (fe
->ops
.tuner_ops
.sleep
) {
734 if (fe
->ops
.i2c_gate_ctrl
)
735 fe
->ops
.i2c_gate_ctrl(fe
, 1);
736 fe
->ops
.tuner_ops
.sleep(fe
);
737 if (fe
->ops
.i2c_gate_ctrl
)
738 fe
->ops
.i2c_gate_ctrl(fe
, 0);
744 fepriv
->thread
= NULL
;
745 if (kthread_should_stop())
746 fe
->exit
= DVB_FE_DEVICE_REMOVED
;
748 fe
->exit
= DVB_FE_NO_EXIT
;
753 dvb_frontend_wakeup(fe
);
757 static void dvb_frontend_stop(struct dvb_frontend
*fe
)
759 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
761 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
763 if (fe
->exit
!= DVB_FE_DEVICE_REMOVED
)
764 fe
->exit
= DVB_FE_NORMAL_EXIT
;
770 kthread_stop(fepriv
->thread
);
772 sema_init(&fepriv
->sem
, 1);
773 fepriv
->state
= FESTATE_IDLE
;
775 /* paranoia check in case a signal arrived */
777 dev_warn(fe
->dvb
->device
,
778 "dvb_frontend_stop: warning: thread %p won't exit\n",
783 * Sleep for the amount of time given by add_usec parameter
785 * This needs to be as precise as possible, as it affects the detection of
786 * the dish tone command at the satellite subsystem. The precision is improved
787 * by using a scheduled msleep followed by udelay for the remainder.
789 void dvb_frontend_sleep_until(ktime_t
*waketime
, u32 add_usec
)
793 *waketime
= ktime_add_us(*waketime
, add_usec
);
794 delta
= ktime_us_delta(ktime_get_boottime(), *waketime
);
796 msleep((delta
- 1500) / 1000);
797 delta
= ktime_us_delta(ktime_get_boottime(), *waketime
);
802 EXPORT_SYMBOL(dvb_frontend_sleep_until
);
804 static int dvb_frontend_start(struct dvb_frontend
*fe
)
807 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
808 struct task_struct
*fe_thread
;
810 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
812 if (fepriv
->thread
) {
813 if (fe
->exit
== DVB_FE_NO_EXIT
)
816 dvb_frontend_stop (fe
);
819 if (signal_pending(current
))
821 if (down_interruptible (&fepriv
->sem
))
824 fepriv
->state
= FESTATE_IDLE
;
825 fe
->exit
= DVB_FE_NO_EXIT
;
826 fepriv
->thread
= NULL
;
829 fe_thread
= kthread_run(dvb_frontend_thread
, fe
,
830 "kdvb-ad-%i-fe-%i", fe
->dvb
->num
,fe
->id
);
831 if (IS_ERR(fe_thread
)) {
832 ret
= PTR_ERR(fe_thread
);
833 dev_warn(fe
->dvb
->device
,
834 "dvb_frontend_start: failed to start kthread (%d)\n",
839 fepriv
->thread
= fe_thread
;
843 static void dvb_frontend_get_frequency_limits(struct dvb_frontend
*fe
,
844 u32
*freq_min
, u32
*freq_max
)
846 *freq_min
= max(fe
->ops
.info
.frequency_min
, fe
->ops
.tuner_ops
.info
.frequency_min
);
848 if (fe
->ops
.info
.frequency_max
== 0)
849 *freq_max
= fe
->ops
.tuner_ops
.info
.frequency_max
;
850 else if (fe
->ops
.tuner_ops
.info
.frequency_max
== 0)
851 *freq_max
= fe
->ops
.info
.frequency_max
;
853 *freq_max
= min(fe
->ops
.info
.frequency_max
, fe
->ops
.tuner_ops
.info
.frequency_max
);
855 if (*freq_min
== 0 || *freq_max
== 0)
856 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
857 fe
->dvb
->num
, fe
->id
);
860 static int dvb_frontend_check_parameters(struct dvb_frontend
*fe
)
862 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
866 /* range check: frequency */
867 dvb_frontend_get_frequency_limits(fe
, &freq_min
, &freq_max
);
868 if ((freq_min
&& c
->frequency
< freq_min
) ||
869 (freq_max
&& c
->frequency
> freq_max
)) {
870 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
871 fe
->dvb
->num
, fe
->id
, c
->frequency
,
876 /* range check: symbol rate */
877 switch (c
->delivery_system
) {
881 case SYS_DVBC_ANNEX_A
:
882 case SYS_DVBC_ANNEX_C
:
883 if ((fe
->ops
.info
.symbol_rate_min
&&
884 c
->symbol_rate
< fe
->ops
.info
.symbol_rate_min
) ||
885 (fe
->ops
.info
.symbol_rate_max
&&
886 c
->symbol_rate
> fe
->ops
.info
.symbol_rate_max
)) {
887 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
888 fe
->dvb
->num
, fe
->id
, c
->symbol_rate
,
889 fe
->ops
.info
.symbol_rate_min
,
890 fe
->ops
.info
.symbol_rate_max
);
900 static int dvb_frontend_clear_cache(struct dvb_frontend
*fe
)
902 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
906 delsys
= c
->delivery_system
;
907 memset(c
, 0, offsetof(struct dtv_frontend_properties
, strength
));
908 c
->delivery_system
= delsys
;
910 c
->state
= DTV_CLEAR
;
912 dev_dbg(fe
->dvb
->device
, "%s: Clearing cache for delivery system %d\n",
913 __func__
, c
->delivery_system
);
915 c
->transmission_mode
= TRANSMISSION_MODE_AUTO
;
916 c
->bandwidth_hz
= 0; /* AUTO */
917 c
->guard_interval
= GUARD_INTERVAL_AUTO
;
918 c
->hierarchy
= HIERARCHY_AUTO
;
920 c
->code_rate_HP
= FEC_AUTO
;
921 c
->code_rate_LP
= FEC_AUTO
;
922 c
->fec_inner
= FEC_AUTO
;
923 c
->rolloff
= ROLLOFF_AUTO
;
924 c
->voltage
= SEC_VOLTAGE_OFF
;
925 c
->sectone
= SEC_TONE_OFF
;
926 c
->pilot
= PILOT_AUTO
;
928 c
->isdbt_partial_reception
= 0;
929 c
->isdbt_sb_mode
= 0;
930 c
->isdbt_sb_subchannel
= 0;
931 c
->isdbt_sb_segment_idx
= 0;
932 c
->isdbt_sb_segment_count
= 0;
933 c
->isdbt_layer_enabled
= 0;
934 for (i
= 0; i
< 3; i
++) {
935 c
->layer
[i
].fec
= FEC_AUTO
;
936 c
->layer
[i
].modulation
= QAM_AUTO
;
937 c
->layer
[i
].interleaving
= 0;
938 c
->layer
[i
].segment_count
= 0;
941 c
->stream_id
= NO_STREAM_ID_FILTER
;
943 switch (c
->delivery_system
) {
947 c
->modulation
= QPSK
; /* implied for DVB-S in legacy API */
948 c
->rolloff
= ROLLOFF_35
;/* implied for DVB-S */
951 c
->modulation
= VSB_8
;
954 c
->symbol_rate
= 28860000;
955 c
->rolloff
= ROLLOFF_35
;
956 c
->bandwidth_hz
= c
->symbol_rate
/ 100 * 135;
959 c
->modulation
= QAM_AUTO
;
968 #define _DTV_CMD(n, s, b) \
976 static struct dtv_cmds_h dtv_cmds
[DTV_MAX_COMMAND
+ 1] = {
977 _DTV_CMD(DTV_TUNE
, 1, 0),
978 _DTV_CMD(DTV_CLEAR
, 1, 0),
981 _DTV_CMD(DTV_FREQUENCY
, 1, 0),
982 _DTV_CMD(DTV_BANDWIDTH_HZ
, 1, 0),
983 _DTV_CMD(DTV_MODULATION
, 1, 0),
984 _DTV_CMD(DTV_INVERSION
, 1, 0),
985 _DTV_CMD(DTV_DISEQC_MASTER
, 1, 1),
986 _DTV_CMD(DTV_SYMBOL_RATE
, 1, 0),
987 _DTV_CMD(DTV_INNER_FEC
, 1, 0),
988 _DTV_CMD(DTV_VOLTAGE
, 1, 0),
989 _DTV_CMD(DTV_TONE
, 1, 0),
990 _DTV_CMD(DTV_PILOT
, 1, 0),
991 _DTV_CMD(DTV_ROLLOFF
, 1, 0),
992 _DTV_CMD(DTV_DELIVERY_SYSTEM
, 1, 0),
993 _DTV_CMD(DTV_HIERARCHY
, 1, 0),
994 _DTV_CMD(DTV_CODE_RATE_HP
, 1, 0),
995 _DTV_CMD(DTV_CODE_RATE_LP
, 1, 0),
996 _DTV_CMD(DTV_GUARD_INTERVAL
, 1, 0),
997 _DTV_CMD(DTV_TRANSMISSION_MODE
, 1, 0),
998 _DTV_CMD(DTV_INTERLEAVING
, 1, 0),
1000 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION
, 1, 0),
1001 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING
, 1, 0),
1002 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID
, 1, 0),
1003 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX
, 1, 0),
1004 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT
, 1, 0),
1005 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED
, 1, 0),
1006 _DTV_CMD(DTV_ISDBT_LAYERA_FEC
, 1, 0),
1007 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION
, 1, 0),
1008 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT
, 1, 0),
1009 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING
, 1, 0),
1010 _DTV_CMD(DTV_ISDBT_LAYERB_FEC
, 1, 0),
1011 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION
, 1, 0),
1012 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT
, 1, 0),
1013 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING
, 1, 0),
1014 _DTV_CMD(DTV_ISDBT_LAYERC_FEC
, 1, 0),
1015 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION
, 1, 0),
1016 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT
, 1, 0),
1017 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING
, 1, 0),
1019 _DTV_CMD(DTV_STREAM_ID
, 1, 0),
1020 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY
, 1, 0),
1021 _DTV_CMD(DTV_LNA
, 1, 0),
1024 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY
, 0, 1),
1025 _DTV_CMD(DTV_API_VERSION
, 0, 0),
1027 _DTV_CMD(DTV_ENUM_DELSYS
, 0, 0),
1029 _DTV_CMD(DTV_ATSCMH_PARADE_ID
, 1, 0),
1030 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE
, 1, 0),
1032 _DTV_CMD(DTV_ATSCMH_FIC_VER
, 0, 0),
1033 _DTV_CMD(DTV_ATSCMH_NOG
, 0, 0),
1034 _DTV_CMD(DTV_ATSCMH_TNOG
, 0, 0),
1035 _DTV_CMD(DTV_ATSCMH_SGN
, 0, 0),
1036 _DTV_CMD(DTV_ATSCMH_PRC
, 0, 0),
1037 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE
, 0, 0),
1038 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI
, 0, 0),
1039 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC
, 0, 0),
1040 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE
, 0, 0),
1041 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A
, 0, 0),
1042 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B
, 0, 0),
1043 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C
, 0, 0),
1044 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D
, 0, 0),
1046 /* Statistics API */
1047 _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH
, 0, 0),
1048 _DTV_CMD(DTV_STAT_CNR
, 0, 0),
1049 _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT
, 0, 0),
1050 _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT
, 0, 0),
1051 _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT
, 0, 0),
1052 _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT
, 0, 0),
1053 _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT
, 0, 0),
1054 _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT
, 0, 0),
1057 static void dtv_property_dump(struct dvb_frontend
*fe
,
1059 struct dtv_property
*tvp
)
1063 if (tvp
->cmd
<= 0 || tvp
->cmd
> DTV_MAX_COMMAND
) {
1064 dev_warn(fe
->dvb
->device
, "%s: %s tvp.cmd = 0x%08x undefined\n",
1066 is_set
? "SET" : "GET",
1071 dev_dbg(fe
->dvb
->device
, "%s: %s tvp.cmd = 0x%08x (%s)\n", __func__
,
1072 is_set
? "SET" : "GET",
1074 dtv_cmds
[tvp
->cmd
].name
);
1076 if (dtv_cmds
[tvp
->cmd
].buffer
) {
1077 dev_dbg(fe
->dvb
->device
, "%s: tvp.u.buffer.len = 0x%02x\n",
1078 __func__
, tvp
->u
.buffer
.len
);
1080 for(i
= 0; i
< tvp
->u
.buffer
.len
; i
++)
1081 dev_dbg(fe
->dvb
->device
,
1082 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1083 __func__
, i
, tvp
->u
.buffer
.data
[i
]);
1085 dev_dbg(fe
->dvb
->device
, "%s: tvp.u.data = 0x%08x\n", __func__
,
1090 /* Synchronise the legacy tuning parameters into the cache, so that demodulator
1091 * drivers can use a single set_frontend tuning function, regardless of whether
1092 * it's being used for the legacy or new API, reducing code and complexity.
1094 static int dtv_property_cache_sync(struct dvb_frontend
*fe
,
1095 struct dtv_frontend_properties
*c
,
1096 const struct dvb_frontend_parameters
*p
)
1098 c
->frequency
= p
->frequency
;
1099 c
->inversion
= p
->inversion
;
1101 switch (dvbv3_type(c
->delivery_system
)) {
1103 dev_dbg(fe
->dvb
->device
, "%s: Preparing QPSK req\n", __func__
);
1104 c
->symbol_rate
= p
->u
.qpsk
.symbol_rate
;
1105 c
->fec_inner
= p
->u
.qpsk
.fec_inner
;
1108 dev_dbg(fe
->dvb
->device
, "%s: Preparing QAM req\n", __func__
);
1109 c
->symbol_rate
= p
->u
.qam
.symbol_rate
;
1110 c
->fec_inner
= p
->u
.qam
.fec_inner
;
1111 c
->modulation
= p
->u
.qam
.modulation
;
1114 dev_dbg(fe
->dvb
->device
, "%s: Preparing OFDM req\n", __func__
);
1116 switch (p
->u
.ofdm
.bandwidth
) {
1117 case BANDWIDTH_10_MHZ
:
1118 c
->bandwidth_hz
= 10000000;
1120 case BANDWIDTH_8_MHZ
:
1121 c
->bandwidth_hz
= 8000000;
1123 case BANDWIDTH_7_MHZ
:
1124 c
->bandwidth_hz
= 7000000;
1126 case BANDWIDTH_6_MHZ
:
1127 c
->bandwidth_hz
= 6000000;
1129 case BANDWIDTH_5_MHZ
:
1130 c
->bandwidth_hz
= 5000000;
1132 case BANDWIDTH_1_712_MHZ
:
1133 c
->bandwidth_hz
= 1712000;
1135 case BANDWIDTH_AUTO
:
1136 c
->bandwidth_hz
= 0;
1139 c
->code_rate_HP
= p
->u
.ofdm
.code_rate_HP
;
1140 c
->code_rate_LP
= p
->u
.ofdm
.code_rate_LP
;
1141 c
->modulation
= p
->u
.ofdm
.constellation
;
1142 c
->transmission_mode
= p
->u
.ofdm
.transmission_mode
;
1143 c
->guard_interval
= p
->u
.ofdm
.guard_interval
;
1144 c
->hierarchy
= p
->u
.ofdm
.hierarchy_information
;
1147 dev_dbg(fe
->dvb
->device
, "%s: Preparing ATSC req\n", __func__
);
1148 c
->modulation
= p
->u
.vsb
.modulation
;
1149 if (c
->delivery_system
== SYS_ATSCMH
)
1151 if ((c
->modulation
== VSB_8
) || (c
->modulation
== VSB_16
))
1152 c
->delivery_system
= SYS_ATSC
;
1154 c
->delivery_system
= SYS_DVBC_ANNEX_B
;
1157 dev_err(fe
->dvb
->device
,
1158 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1159 __func__
, c
->delivery_system
);
1166 /* Ensure the cached values are set correctly in the frontend
1167 * legacy tuning structures, for the advanced tuning API.
1170 dtv_property_legacy_params_sync(struct dvb_frontend
*fe
,
1171 const struct dtv_frontend_properties
*c
,
1172 struct dvb_frontend_parameters
*p
)
1174 p
->frequency
= c
->frequency
;
1175 p
->inversion
= c
->inversion
;
1177 switch (dvbv3_type(c
->delivery_system
)) {
1179 dev_err(fe
->dvb
->device
,
1180 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1181 __func__
, c
->delivery_system
);
1184 dev_dbg(fe
->dvb
->device
, "%s: Preparing QPSK req\n", __func__
);
1185 p
->u
.qpsk
.symbol_rate
= c
->symbol_rate
;
1186 p
->u
.qpsk
.fec_inner
= c
->fec_inner
;
1189 dev_dbg(fe
->dvb
->device
, "%s: Preparing QAM req\n", __func__
);
1190 p
->u
.qam
.symbol_rate
= c
->symbol_rate
;
1191 p
->u
.qam
.fec_inner
= c
->fec_inner
;
1192 p
->u
.qam
.modulation
= c
->modulation
;
1195 dev_dbg(fe
->dvb
->device
, "%s: Preparing OFDM req\n", __func__
);
1196 switch (c
->bandwidth_hz
) {
1198 p
->u
.ofdm
.bandwidth
= BANDWIDTH_10_MHZ
;
1201 p
->u
.ofdm
.bandwidth
= BANDWIDTH_8_MHZ
;
1204 p
->u
.ofdm
.bandwidth
= BANDWIDTH_7_MHZ
;
1207 p
->u
.ofdm
.bandwidth
= BANDWIDTH_6_MHZ
;
1210 p
->u
.ofdm
.bandwidth
= BANDWIDTH_5_MHZ
;
1213 p
->u
.ofdm
.bandwidth
= BANDWIDTH_1_712_MHZ
;
1217 p
->u
.ofdm
.bandwidth
= BANDWIDTH_AUTO
;
1219 p
->u
.ofdm
.code_rate_HP
= c
->code_rate_HP
;
1220 p
->u
.ofdm
.code_rate_LP
= c
->code_rate_LP
;
1221 p
->u
.ofdm
.constellation
= c
->modulation
;
1222 p
->u
.ofdm
.transmission_mode
= c
->transmission_mode
;
1223 p
->u
.ofdm
.guard_interval
= c
->guard_interval
;
1224 p
->u
.ofdm
.hierarchy_information
= c
->hierarchy
;
1227 dev_dbg(fe
->dvb
->device
, "%s: Preparing VSB req\n", __func__
);
1228 p
->u
.vsb
.modulation
= c
->modulation
;
1235 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1236 * @fe: struct dvb_frontend pointer
1237 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1238 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1240 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1241 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1242 * If p_out is not null, it will update the DVBv3 params pointed by it.
1244 static int dtv_get_frontend(struct dvb_frontend
*fe
,
1245 struct dtv_frontend_properties
*c
,
1246 struct dvb_frontend_parameters
*p_out
)
1250 if (fe
->ops
.get_frontend
) {
1251 r
= fe
->ops
.get_frontend(fe
, c
);
1252 if (unlikely(r
< 0))
1255 dtv_property_legacy_params_sync(fe
, c
, p_out
);
1259 /* As everything is in cache, get_frontend fops are always supported */
1263 static int dvb_frontend_ioctl_legacy(struct file
*file
,
1264 unsigned int cmd
, void *parg
);
1265 static int dvb_frontend_ioctl_properties(struct file
*file
,
1266 unsigned int cmd
, void *parg
);
1268 static int dtv_property_process_get(struct dvb_frontend
*fe
,
1269 const struct dtv_frontend_properties
*c
,
1270 struct dtv_property
*tvp
,
1276 case DTV_ENUM_DELSYS
:
1278 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1279 tvp
->u
.buffer
.data
[ncaps
] = fe
->ops
.delsys
[ncaps
];
1282 tvp
->u
.buffer
.len
= ncaps
;
1285 tvp
->u
.data
= c
->frequency
;
1287 case DTV_MODULATION
:
1288 tvp
->u
.data
= c
->modulation
;
1290 case DTV_BANDWIDTH_HZ
:
1291 tvp
->u
.data
= c
->bandwidth_hz
;
1294 tvp
->u
.data
= c
->inversion
;
1296 case DTV_SYMBOL_RATE
:
1297 tvp
->u
.data
= c
->symbol_rate
;
1300 tvp
->u
.data
= c
->fec_inner
;
1303 tvp
->u
.data
= c
->pilot
;
1306 tvp
->u
.data
= c
->rolloff
;
1308 case DTV_DELIVERY_SYSTEM
:
1309 tvp
->u
.data
= c
->delivery_system
;
1312 tvp
->u
.data
= c
->voltage
;
1315 tvp
->u
.data
= c
->sectone
;
1317 case DTV_API_VERSION
:
1318 tvp
->u
.data
= (DVB_API_VERSION
<< 8) | DVB_API_VERSION_MINOR
;
1320 case DTV_CODE_RATE_HP
:
1321 tvp
->u
.data
= c
->code_rate_HP
;
1323 case DTV_CODE_RATE_LP
:
1324 tvp
->u
.data
= c
->code_rate_LP
;
1326 case DTV_GUARD_INTERVAL
:
1327 tvp
->u
.data
= c
->guard_interval
;
1329 case DTV_TRANSMISSION_MODE
:
1330 tvp
->u
.data
= c
->transmission_mode
;
1333 tvp
->u
.data
= c
->hierarchy
;
1335 case DTV_INTERLEAVING
:
1336 tvp
->u
.data
= c
->interleaving
;
1339 /* ISDB-T Support here */
1340 case DTV_ISDBT_PARTIAL_RECEPTION
:
1341 tvp
->u
.data
= c
->isdbt_partial_reception
;
1343 case DTV_ISDBT_SOUND_BROADCASTING
:
1344 tvp
->u
.data
= c
->isdbt_sb_mode
;
1346 case DTV_ISDBT_SB_SUBCHANNEL_ID
:
1347 tvp
->u
.data
= c
->isdbt_sb_subchannel
;
1349 case DTV_ISDBT_SB_SEGMENT_IDX
:
1350 tvp
->u
.data
= c
->isdbt_sb_segment_idx
;
1352 case DTV_ISDBT_SB_SEGMENT_COUNT
:
1353 tvp
->u
.data
= c
->isdbt_sb_segment_count
;
1355 case DTV_ISDBT_LAYER_ENABLED
:
1356 tvp
->u
.data
= c
->isdbt_layer_enabled
;
1358 case DTV_ISDBT_LAYERA_FEC
:
1359 tvp
->u
.data
= c
->layer
[0].fec
;
1361 case DTV_ISDBT_LAYERA_MODULATION
:
1362 tvp
->u
.data
= c
->layer
[0].modulation
;
1364 case DTV_ISDBT_LAYERA_SEGMENT_COUNT
:
1365 tvp
->u
.data
= c
->layer
[0].segment_count
;
1367 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING
:
1368 tvp
->u
.data
= c
->layer
[0].interleaving
;
1370 case DTV_ISDBT_LAYERB_FEC
:
1371 tvp
->u
.data
= c
->layer
[1].fec
;
1373 case DTV_ISDBT_LAYERB_MODULATION
:
1374 tvp
->u
.data
= c
->layer
[1].modulation
;
1376 case DTV_ISDBT_LAYERB_SEGMENT_COUNT
:
1377 tvp
->u
.data
= c
->layer
[1].segment_count
;
1379 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING
:
1380 tvp
->u
.data
= c
->layer
[1].interleaving
;
1382 case DTV_ISDBT_LAYERC_FEC
:
1383 tvp
->u
.data
= c
->layer
[2].fec
;
1385 case DTV_ISDBT_LAYERC_MODULATION
:
1386 tvp
->u
.data
= c
->layer
[2].modulation
;
1388 case DTV_ISDBT_LAYERC_SEGMENT_COUNT
:
1389 tvp
->u
.data
= c
->layer
[2].segment_count
;
1391 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING
:
1392 tvp
->u
.data
= c
->layer
[2].interleaving
;
1395 /* Multistream support */
1397 case DTV_DVBT2_PLP_ID_LEGACY
:
1398 tvp
->u
.data
= c
->stream_id
;
1402 case DTV_ATSCMH_FIC_VER
:
1403 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_fic_ver
;
1405 case DTV_ATSCMH_PARADE_ID
:
1406 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_parade_id
;
1408 case DTV_ATSCMH_NOG
:
1409 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_nog
;
1411 case DTV_ATSCMH_TNOG
:
1412 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_tnog
;
1414 case DTV_ATSCMH_SGN
:
1415 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sgn
;
1417 case DTV_ATSCMH_PRC
:
1418 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_prc
;
1420 case DTV_ATSCMH_RS_FRAME_MODE
:
1421 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_frame_mode
;
1423 case DTV_ATSCMH_RS_FRAME_ENSEMBLE
:
1424 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_frame_ensemble
;
1426 case DTV_ATSCMH_RS_CODE_MODE_PRI
:
1427 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_code_mode_pri
;
1429 case DTV_ATSCMH_RS_CODE_MODE_SEC
:
1430 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_code_mode_sec
;
1432 case DTV_ATSCMH_SCCC_BLOCK_MODE
:
1433 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_block_mode
;
1435 case DTV_ATSCMH_SCCC_CODE_MODE_A
:
1436 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_a
;
1438 case DTV_ATSCMH_SCCC_CODE_MODE_B
:
1439 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_b
;
1441 case DTV_ATSCMH_SCCC_CODE_MODE_C
:
1442 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_c
;
1444 case DTV_ATSCMH_SCCC_CODE_MODE_D
:
1445 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_d
;
1449 tvp
->u
.data
= c
->lna
;
1452 /* Fill quality measures */
1453 case DTV_STAT_SIGNAL_STRENGTH
:
1454 tvp
->u
.st
= c
->strength
;
1459 case DTV_STAT_PRE_ERROR_BIT_COUNT
:
1460 tvp
->u
.st
= c
->pre_bit_error
;
1462 case DTV_STAT_PRE_TOTAL_BIT_COUNT
:
1463 tvp
->u
.st
= c
->pre_bit_count
;
1465 case DTV_STAT_POST_ERROR_BIT_COUNT
:
1466 tvp
->u
.st
= c
->post_bit_error
;
1468 case DTV_STAT_POST_TOTAL_BIT_COUNT
:
1469 tvp
->u
.st
= c
->post_bit_count
;
1471 case DTV_STAT_ERROR_BLOCK_COUNT
:
1472 tvp
->u
.st
= c
->block_error
;
1474 case DTV_STAT_TOTAL_BLOCK_COUNT
:
1475 tvp
->u
.st
= c
->block_count
;
1478 dev_dbg(fe
->dvb
->device
,
1479 "%s: FE property %d doesn't exist\n",
1480 __func__
, tvp
->cmd
);
1484 /* Allow the frontend to override outgoing properties */
1485 if (fe
->ops
.get_property
) {
1486 r
= fe
->ops
.get_property(fe
, tvp
);
1491 dtv_property_dump(fe
, false, tvp
);
1496 static int dtv_set_frontend(struct dvb_frontend
*fe
);
1498 static bool is_dvbv3_delsys(u32 delsys
)
1502 status
= (delsys
== SYS_DVBT
) || (delsys
== SYS_DVBC_ANNEX_A
) ||
1503 (delsys
== SYS_DVBS
) || (delsys
== SYS_ATSC
);
1509 * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
1510 * @fe: struct frontend;
1511 * @delsys: DVBv5 type that will be used for emulation
1513 * Provides emulation for delivery systems that are compatible with the old
1514 * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
1515 * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
1516 * parameters are compatible with DVB-S spec.
1518 static int emulate_delivery_system(struct dvb_frontend
*fe
, u32 delsys
)
1521 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1523 c
->delivery_system
= delsys
;
1526 * If the call is for ISDB-T, put it into full-seg, auto mode, TV
1528 if (c
->delivery_system
== SYS_ISDBT
) {
1529 dev_dbg(fe
->dvb
->device
,
1530 "%s: Using defaults for SYS_ISDBT\n",
1533 if (!c
->bandwidth_hz
)
1534 c
->bandwidth_hz
= 6000000;
1536 c
->isdbt_partial_reception
= 0;
1537 c
->isdbt_sb_mode
= 0;
1538 c
->isdbt_sb_subchannel
= 0;
1539 c
->isdbt_sb_segment_idx
= 0;
1540 c
->isdbt_sb_segment_count
= 0;
1541 c
->isdbt_layer_enabled
= 7;
1542 for (i
= 0; i
< 3; i
++) {
1543 c
->layer
[i
].fec
= FEC_AUTO
;
1544 c
->layer
[i
].modulation
= QAM_AUTO
;
1545 c
->layer
[i
].interleaving
= 0;
1546 c
->layer
[i
].segment_count
= 0;
1549 dev_dbg(fe
->dvb
->device
, "%s: change delivery system on cache to %d\n",
1550 __func__
, c
->delivery_system
);
1556 * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
1557 * @fe: frontend struct
1558 * @desired_system: delivery system requested by the user
1560 * A DVBv5 call know what's the desired system it wants. So, set it.
1562 * There are, however, a few known issues with early DVBv5 applications that
1563 * are also handled by this logic:
1565 * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
1566 * This is an API violation, but, as we don't want to break userspace,
1567 * convert it to the first supported delivery system.
1568 * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
1569 * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
1570 * ISDB-T provided backward compat with DVB-T.
1572 static int dvbv5_set_delivery_system(struct dvb_frontend
*fe
,
1576 u32 delsys
= SYS_UNDEFINED
;
1577 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1578 enum dvbv3_emulation_type type
;
1581 * It was reported that some old DVBv5 applications were
1582 * filling delivery_system with SYS_UNDEFINED. If this happens,
1583 * assume that the application wants to use the first supported
1586 if (desired_system
== SYS_UNDEFINED
)
1587 desired_system
= fe
->ops
.delsys
[0];
1590 * This is a DVBv5 call. So, it likely knows the supported
1591 * delivery systems. So, check if the desired delivery system is
1595 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1596 if (fe
->ops
.delsys
[ncaps
] == desired_system
) {
1597 c
->delivery_system
= desired_system
;
1598 dev_dbg(fe
->dvb
->device
,
1599 "%s: Changing delivery system to %d\n",
1600 __func__
, desired_system
);
1607 * The requested delivery system isn't supported. Maybe userspace
1608 * is requesting a DVBv3 compatible delivery system.
1610 * The emulation only works if the desired system is one of the
1611 * delivery systems supported by DVBv3 API
1613 if (!is_dvbv3_delsys(desired_system
)) {
1614 dev_dbg(fe
->dvb
->device
,
1615 "%s: Delivery system %d not supported.\n",
1616 __func__
, desired_system
);
1620 type
= dvbv3_type(desired_system
);
1623 * Get the last non-DVBv3 delivery system that has the same type
1624 * of the desired system
1627 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1628 if (dvbv3_type(fe
->ops
.delsys
[ncaps
]) == type
)
1629 delsys
= fe
->ops
.delsys
[ncaps
];
1633 /* There's nothing compatible with the desired delivery system */
1634 if (delsys
== SYS_UNDEFINED
) {
1635 dev_dbg(fe
->dvb
->device
,
1636 "%s: Delivery system %d not supported on emulation mode.\n",
1637 __func__
, desired_system
);
1641 dev_dbg(fe
->dvb
->device
,
1642 "%s: Using delivery system %d emulated as if it were %d\n",
1643 __func__
, delsys
, desired_system
);
1645 return emulate_delivery_system(fe
, desired_system
);
1649 * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
1650 * @fe: frontend struct
1652 * A DVBv3 call doesn't know what's the desired system it wants. It also
1653 * doesn't allow to switch between different types. Due to that, userspace
1654 * should use DVBv5 instead.
1655 * However, in order to avoid breaking userspace API, limited backward
1656 * compatibility support is provided.
1658 * There are some delivery systems that are incompatible with DVBv3 calls.
1660 * This routine should work fine for frontends that support just one delivery
1663 * For frontends that support multiple frontends:
1664 * 1) It defaults to use the first supported delivery system. There's an
1665 * userspace application that allows changing it at runtime;
1667 * 2) If the current delivery system is not compatible with DVBv3, it gets
1668 * the first one that it is compatible.
1670 * NOTE: in order for this to work with applications like Kaffeine that
1671 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1672 * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
1673 * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
1676 static int dvbv3_set_delivery_system(struct dvb_frontend
*fe
)
1679 u32 delsys
= SYS_UNDEFINED
;
1680 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1682 /* If not set yet, defaults to the first supported delivery system */
1683 if (c
->delivery_system
== SYS_UNDEFINED
)
1684 c
->delivery_system
= fe
->ops
.delsys
[0];
1687 * Trivial case: just use the current one, if it already a DVBv3
1690 if (is_dvbv3_delsys(c
->delivery_system
)) {
1691 dev_dbg(fe
->dvb
->device
,
1692 "%s: Using delivery system to %d\n",
1693 __func__
, c
->delivery_system
);
1698 * Seek for the first delivery system that it is compatible with a
1702 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1703 if (dvbv3_type(fe
->ops
.delsys
[ncaps
]) != DVBV3_UNKNOWN
) {
1704 delsys
= fe
->ops
.delsys
[ncaps
];
1709 if (delsys
== SYS_UNDEFINED
) {
1710 dev_dbg(fe
->dvb
->device
,
1711 "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
1715 return emulate_delivery_system(fe
, delsys
);
1718 static int dtv_property_process_set(struct dvb_frontend
*fe
,
1719 struct dtv_property
*tvp
,
1723 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1725 /* Allow the frontend to validate incoming properties */
1726 if (fe
->ops
.set_property
) {
1727 r
= fe
->ops
.set_property(fe
, tvp
);
1732 dtv_property_dump(fe
, true, tvp
);
1737 * Reset a cache of data specific to the frontend here. This does
1738 * not effect hardware.
1740 dvb_frontend_clear_cache(fe
);
1743 /* interpret the cache of data, build either a traditional frontend
1744 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1747 c
->state
= tvp
->cmd
;
1748 dev_dbg(fe
->dvb
->device
, "%s: Finalised property cache\n",
1751 r
= dtv_set_frontend(fe
);
1754 c
->frequency
= tvp
->u
.data
;
1756 case DTV_MODULATION
:
1757 c
->modulation
= tvp
->u
.data
;
1759 case DTV_BANDWIDTH_HZ
:
1760 c
->bandwidth_hz
= tvp
->u
.data
;
1763 c
->inversion
= tvp
->u
.data
;
1765 case DTV_SYMBOL_RATE
:
1766 c
->symbol_rate
= tvp
->u
.data
;
1769 c
->fec_inner
= tvp
->u
.data
;
1772 c
->pilot
= tvp
->u
.data
;
1775 c
->rolloff
= tvp
->u
.data
;
1777 case DTV_DELIVERY_SYSTEM
:
1778 r
= dvbv5_set_delivery_system(fe
, tvp
->u
.data
);
1781 c
->voltage
= tvp
->u
.data
;
1782 r
= dvb_frontend_ioctl_legacy(file
, FE_SET_VOLTAGE
,
1783 (void *)c
->voltage
);
1786 c
->sectone
= tvp
->u
.data
;
1787 r
= dvb_frontend_ioctl_legacy(file
, FE_SET_TONE
,
1788 (void *)c
->sectone
);
1790 case DTV_CODE_RATE_HP
:
1791 c
->code_rate_HP
= tvp
->u
.data
;
1793 case DTV_CODE_RATE_LP
:
1794 c
->code_rate_LP
= tvp
->u
.data
;
1796 case DTV_GUARD_INTERVAL
:
1797 c
->guard_interval
= tvp
->u
.data
;
1799 case DTV_TRANSMISSION_MODE
:
1800 c
->transmission_mode
= tvp
->u
.data
;
1803 c
->hierarchy
= tvp
->u
.data
;
1805 case DTV_INTERLEAVING
:
1806 c
->interleaving
= tvp
->u
.data
;
1809 /* ISDB-T Support here */
1810 case DTV_ISDBT_PARTIAL_RECEPTION
:
1811 c
->isdbt_partial_reception
= tvp
->u
.data
;
1813 case DTV_ISDBT_SOUND_BROADCASTING
:
1814 c
->isdbt_sb_mode
= tvp
->u
.data
;
1816 case DTV_ISDBT_SB_SUBCHANNEL_ID
:
1817 c
->isdbt_sb_subchannel
= tvp
->u
.data
;
1819 case DTV_ISDBT_SB_SEGMENT_IDX
:
1820 c
->isdbt_sb_segment_idx
= tvp
->u
.data
;
1822 case DTV_ISDBT_SB_SEGMENT_COUNT
:
1823 c
->isdbt_sb_segment_count
= tvp
->u
.data
;
1825 case DTV_ISDBT_LAYER_ENABLED
:
1826 c
->isdbt_layer_enabled
= tvp
->u
.data
;
1828 case DTV_ISDBT_LAYERA_FEC
:
1829 c
->layer
[0].fec
= tvp
->u
.data
;
1831 case DTV_ISDBT_LAYERA_MODULATION
:
1832 c
->layer
[0].modulation
= tvp
->u
.data
;
1834 case DTV_ISDBT_LAYERA_SEGMENT_COUNT
:
1835 c
->layer
[0].segment_count
= tvp
->u
.data
;
1837 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING
:
1838 c
->layer
[0].interleaving
= tvp
->u
.data
;
1840 case DTV_ISDBT_LAYERB_FEC
:
1841 c
->layer
[1].fec
= tvp
->u
.data
;
1843 case DTV_ISDBT_LAYERB_MODULATION
:
1844 c
->layer
[1].modulation
= tvp
->u
.data
;
1846 case DTV_ISDBT_LAYERB_SEGMENT_COUNT
:
1847 c
->layer
[1].segment_count
= tvp
->u
.data
;
1849 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING
:
1850 c
->layer
[1].interleaving
= tvp
->u
.data
;
1852 case DTV_ISDBT_LAYERC_FEC
:
1853 c
->layer
[2].fec
= tvp
->u
.data
;
1855 case DTV_ISDBT_LAYERC_MODULATION
:
1856 c
->layer
[2].modulation
= tvp
->u
.data
;
1858 case DTV_ISDBT_LAYERC_SEGMENT_COUNT
:
1859 c
->layer
[2].segment_count
= tvp
->u
.data
;
1861 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING
:
1862 c
->layer
[2].interleaving
= tvp
->u
.data
;
1865 /* Multistream support */
1867 case DTV_DVBT2_PLP_ID_LEGACY
:
1868 c
->stream_id
= tvp
->u
.data
;
1872 case DTV_ATSCMH_PARADE_ID
:
1873 fe
->dtv_property_cache
.atscmh_parade_id
= tvp
->u
.data
;
1875 case DTV_ATSCMH_RS_FRAME_ENSEMBLE
:
1876 fe
->dtv_property_cache
.atscmh_rs_frame_ensemble
= tvp
->u
.data
;
1880 c
->lna
= tvp
->u
.data
;
1881 if (fe
->ops
.set_lna
)
1882 r
= fe
->ops
.set_lna(fe
);
1894 static int dvb_frontend_ioctl(struct file
*file
,
1895 unsigned int cmd
, void *parg
)
1897 struct dvb_device
*dvbdev
= file
->private_data
;
1898 struct dvb_frontend
*fe
= dvbdev
->priv
;
1899 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1900 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
1901 int err
= -EOPNOTSUPP
;
1903 dev_dbg(fe
->dvb
->device
, "%s: (%d)\n", __func__
, _IOC_NR(cmd
));
1904 if (down_interruptible(&fepriv
->sem
))
1905 return -ERESTARTSYS
;
1907 if (fe
->exit
!= DVB_FE_NO_EXIT
) {
1912 if ((file
->f_flags
& O_ACCMODE
) == O_RDONLY
&&
1913 (_IOC_DIR(cmd
) != _IOC_READ
|| cmd
== FE_GET_EVENT
||
1914 cmd
== FE_DISEQC_RECV_SLAVE_REPLY
)) {
1919 if ((cmd
== FE_SET_PROPERTY
) || (cmd
== FE_GET_PROPERTY
))
1920 err
= dvb_frontend_ioctl_properties(file
, cmd
, parg
);
1922 c
->state
= DTV_UNDEFINED
;
1923 err
= dvb_frontend_ioctl_legacy(file
, cmd
, parg
);
1930 static int dvb_frontend_ioctl_properties(struct file
*file
,
1931 unsigned int cmd
, void *parg
)
1933 struct dvb_device
*dvbdev
= file
->private_data
;
1934 struct dvb_frontend
*fe
= dvbdev
->priv
;
1935 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
1936 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1939 struct dtv_properties
*tvps
= parg
;
1940 struct dtv_property
*tvp
= NULL
;
1943 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
1945 if (cmd
== FE_SET_PROPERTY
) {
1946 dev_dbg(fe
->dvb
->device
, "%s: properties.num = %d\n", __func__
, tvps
->num
);
1947 dev_dbg(fe
->dvb
->device
, "%s: properties.props = %p\n", __func__
, tvps
->props
);
1949 /* Put an arbitrary limit on the number of messages that can
1950 * be sent at once */
1951 if ((tvps
->num
== 0) || (tvps
->num
> DTV_IOCTL_MAX_MSGS
))
1954 tvp
= kmalloc(tvps
->num
* sizeof(struct dtv_property
), GFP_KERNEL
);
1960 if (copy_from_user(tvp
, (void __user
*)tvps
->props
,
1961 tvps
->num
* sizeof(struct dtv_property
))) {
1966 for (i
= 0; i
< tvps
->num
; i
++) {
1967 err
= dtv_property_process_set(fe
, tvp
+ i
, file
);
1970 (tvp
+ i
)->result
= err
;
1973 if (c
->state
== DTV_TUNE
)
1974 dev_dbg(fe
->dvb
->device
, "%s: Property cache is full, tuning\n", __func__
);
1976 } else if (cmd
== FE_GET_PROPERTY
) {
1977 struct dtv_frontend_properties getp
= fe
->dtv_property_cache
;
1979 dev_dbg(fe
->dvb
->device
, "%s: properties.num = %d\n", __func__
, tvps
->num
);
1980 dev_dbg(fe
->dvb
->device
, "%s: properties.props = %p\n", __func__
, tvps
->props
);
1982 /* Put an arbitrary limit on the number of messages that can
1983 * be sent at once */
1984 if ((tvps
->num
== 0) || (tvps
->num
> DTV_IOCTL_MAX_MSGS
))
1987 tvp
= kmalloc(tvps
->num
* sizeof(struct dtv_property
), GFP_KERNEL
);
1993 if (copy_from_user(tvp
, (void __user
*)tvps
->props
,
1994 tvps
->num
* sizeof(struct dtv_property
))) {
2000 * Let's use our own copy of property cache, in order to
2001 * avoid mangling with DTV zigzag logic, as drivers might
2002 * return crap, if they don't check if the data is available
2003 * before updating the properties cache.
2005 if (fepriv
->state
!= FESTATE_IDLE
) {
2006 err
= dtv_get_frontend(fe
, &getp
, NULL
);
2010 for (i
= 0; i
< tvps
->num
; i
++) {
2011 err
= dtv_property_process_get(fe
, &getp
, 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
, c
, &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
= mult_frac(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 /* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */
2218 if (!(fepriv
->tune_mode_flags
& FE_TUNE_MODE_ONESHOT
))
2219 info
->caps
|= FE_CAN_INVERSION_AUTO
;
2224 case FE_READ_STATUS
: {
2225 enum fe_status
*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 struct dvb_diseqc_master_cmd
*cmd
= parg
;
2289 if (cmd
->msg_len
> sizeof(cmd
->msg
)) {
2293 err
= fe
->ops
.diseqc_send_master_cmd(fe
, cmd
);
2294 fepriv
->state
= FESTATE_DISEQC
;
2299 case FE_DISEQC_SEND_BURST
:
2300 if (fe
->ops
.diseqc_send_burst
) {
2301 err
= fe
->ops
.diseqc_send_burst(fe
,
2302 (enum fe_sec_mini_cmd
)parg
);
2303 fepriv
->state
= FESTATE_DISEQC
;
2309 if (fe
->ops
.set_tone
) {
2310 err
= fe
->ops
.set_tone(fe
,
2311 (enum fe_sec_tone_mode
)parg
);
2312 fepriv
->tone
= (enum fe_sec_tone_mode
)parg
;
2313 fepriv
->state
= FESTATE_DISEQC
;
2318 case FE_SET_VOLTAGE
:
2319 if (fe
->ops
.set_voltage
) {
2320 err
= fe
->ops
.set_voltage(fe
,
2321 (enum fe_sec_voltage
)parg
);
2322 fepriv
->voltage
= (enum fe_sec_voltage
)parg
;
2323 fepriv
->state
= FESTATE_DISEQC
;
2328 case FE_DISHNETWORK_SEND_LEGACY_CMD
:
2329 if (fe
->ops
.dishnetwork_send_legacy_command
) {
2330 err
= fe
->ops
.dishnetwork_send_legacy_command(fe
,
2331 (unsigned long)parg
);
2332 fepriv
->state
= FESTATE_DISEQC
;
2334 } else if (fe
->ops
.set_voltage
) {
2336 * NOTE: This is a fallback condition. Some frontends
2337 * (stv0299 for instance) take longer than 8msec to
2338 * respond to a set_voltage command. Those switches
2339 * need custom routines to switch properly. For all
2340 * other frontends, the following should work ok.
2341 * Dish network legacy switches (as used by Dish500)
2342 * are controlled by sending 9-bit command words
2343 * spaced 8msec apart.
2344 * the actual command word is switch/port dependent
2345 * so it is up to the userspace application to send
2346 * the right command.
2347 * The command must always start with a '0' after
2348 * initialization, so parg is 8 bits and does not
2349 * include the initialization or start bit
2351 unsigned long swcmd
= ((unsigned long) parg
) << 1;
2356 if (dvb_frontend_debug
)
2357 printk("%s switch command: 0x%04lx\n", __func__
, swcmd
);
2358 nexttime
= ktime_get_boottime();
2359 if (dvb_frontend_debug
)
2361 /* before sending a command, initialize by sending
2362 * a 32ms 18V to the switch
2364 fe
->ops
.set_voltage(fe
, SEC_VOLTAGE_18
);
2365 dvb_frontend_sleep_until(&nexttime
, 32000);
2367 for (i
= 0; i
< 9; i
++) {
2368 if (dvb_frontend_debug
)
2369 tv
[i
+1] = ktime_get_boottime();
2370 if ((swcmd
& 0x01) != last
) {
2371 /* set voltage to (last ? 13V : 18V) */
2372 fe
->ops
.set_voltage(fe
, (last
) ? SEC_VOLTAGE_13
: SEC_VOLTAGE_18
);
2373 last
= (last
) ? 0 : 1;
2377 dvb_frontend_sleep_until(&nexttime
, 8000);
2379 if (dvb_frontend_debug
) {
2380 printk("%s(%d): switch delay (should be 32k followed by all 8k\n",
2381 __func__
, fe
->dvb
->num
);
2382 for (i
= 1; i
< 10; i
++)
2383 printk("%d: %d\n", i
,
2384 (int) ktime_us_delta(tv
[i
], tv
[i
-1]));
2387 fepriv
->state
= FESTATE_DISEQC
;
2392 case FE_DISEQC_RECV_SLAVE_REPLY
:
2393 if (fe
->ops
.diseqc_recv_slave_reply
)
2394 err
= fe
->ops
.diseqc_recv_slave_reply(fe
, (struct dvb_diseqc_slave_reply
*) parg
);
2397 case FE_ENABLE_HIGH_LNB_VOLTAGE
:
2398 if (fe
->ops
.enable_high_lnb_voltage
)
2399 err
= fe
->ops
.enable_high_lnb_voltage(fe
, (long) parg
);
2402 case FE_SET_FRONTEND
:
2403 err
= dvbv3_set_delivery_system(fe
);
2407 err
= dtv_property_cache_sync(fe
, c
, parg
);
2410 err
= dtv_set_frontend(fe
);
2413 err
= dvb_frontend_get_event (fe
, parg
, file
->f_flags
);
2416 case FE_GET_FRONTEND
: {
2417 struct dtv_frontend_properties getp
= fe
->dtv_property_cache
;
2420 * Let's use our own copy of property cache, in order to
2421 * avoid mangling with DTV zigzag logic, as drivers might
2422 * return crap, if they don't check if the data is available
2423 * before updating the properties cache.
2425 err
= dtv_get_frontend(fe
, &getp
, parg
);
2428 case FE_SET_FRONTEND_TUNE_MODE
:
2429 fepriv
->tune_mode_flags
= (unsigned long) parg
;
2438 static unsigned int dvb_frontend_poll(struct file
*file
, struct poll_table_struct
*wait
)
2440 struct dvb_device
*dvbdev
= file
->private_data
;
2441 struct dvb_frontend
*fe
= dvbdev
->priv
;
2442 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2444 dev_dbg_ratelimited(fe
->dvb
->device
, "%s:\n", __func__
);
2446 poll_wait (file
, &fepriv
->events
.wait_queue
, wait
);
2448 if (fepriv
->events
.eventw
!= fepriv
->events
.eventr
)
2449 return (POLLIN
| POLLRDNORM
| POLLPRI
);
2454 static int dvb_frontend_open(struct inode
*inode
, struct file
*file
)
2456 struct dvb_device
*dvbdev
= file
->private_data
;
2457 struct dvb_frontend
*fe
= dvbdev
->priv
;
2458 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2459 struct dvb_adapter
*adapter
= fe
->dvb
;
2462 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2463 if (fe
->exit
== DVB_FE_DEVICE_REMOVED
)
2466 if (adapter
->mfe_shared
) {
2467 mutex_lock (&adapter
->mfe_lock
);
2469 if (adapter
->mfe_dvbdev
== NULL
)
2470 adapter
->mfe_dvbdev
= dvbdev
;
2472 else if (adapter
->mfe_dvbdev
!= dvbdev
) {
2474 *mfedev
= adapter
->mfe_dvbdev
;
2476 *mfe
= mfedev
->priv
;
2477 struct dvb_frontend_private
2478 *mfepriv
= mfe
->frontend_priv
;
2479 int mferetry
= (dvb_mfe_wait_time
<< 1);
2481 mutex_unlock (&adapter
->mfe_lock
);
2482 while (mferetry
-- && (mfedev
->users
!= -1 ||
2483 mfepriv
->thread
!= NULL
)) {
2484 if(msleep_interruptible(500)) {
2485 if(signal_pending(current
))
2490 mutex_lock (&adapter
->mfe_lock
);
2491 if(adapter
->mfe_dvbdev
!= dvbdev
) {
2492 mfedev
= adapter
->mfe_dvbdev
;
2494 mfepriv
= mfe
->frontend_priv
;
2495 if (mfedev
->users
!= -1 ||
2496 mfepriv
->thread
!= NULL
) {
2497 mutex_unlock (&adapter
->mfe_lock
);
2500 adapter
->mfe_dvbdev
= dvbdev
;
2505 if (dvbdev
->users
== -1 && fe
->ops
.ts_bus_ctrl
) {
2506 if ((ret
= fe
->ops
.ts_bus_ctrl(fe
, 1)) < 0)
2509 /* If we took control of the bus, we need to force
2510 reinitialization. This is because many ts_bus_ctrl()
2511 functions strobe the RESET pin on the demod, and if the
2512 frontend thread already exists then the dvb_init() routine
2513 won't get called (which is what usually does initial
2514 register configuration). */
2515 fepriv
->reinitialise
= 1;
2518 if ((ret
= dvb_generic_open (inode
, file
)) < 0)
2521 if ((file
->f_flags
& O_ACCMODE
) != O_RDONLY
) {
2522 /* normal tune mode when opened R/W */
2523 fepriv
->tune_mode_flags
&= ~FE_TUNE_MODE_ONESHOT
;
2525 fepriv
->voltage
= -1;
2527 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
2528 if (fe
->dvb
->mdev
&& fe
->dvb
->mdev
->enable_source
) {
2529 ret
= fe
->dvb
->mdev
->enable_source(dvbdev
->entity
,
2532 dev_err(fe
->dvb
->device
,
2533 "Tuner is busy. Error %d\n", ret
);
2538 ret
= dvb_frontend_start (fe
);
2542 /* empty event queue */
2543 fepriv
->events
.eventr
= fepriv
->events
.eventw
= 0;
2546 if (adapter
->mfe_shared
)
2547 mutex_unlock (&adapter
->mfe_lock
);
2551 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
2552 if (fe
->dvb
->mdev
&& fe
->dvb
->mdev
->disable_source
)
2553 fe
->dvb
->mdev
->disable_source(dvbdev
->entity
);
2556 dvb_generic_release(inode
, file
);
2558 if (dvbdev
->users
== -1 && fe
->ops
.ts_bus_ctrl
)
2559 fe
->ops
.ts_bus_ctrl(fe
, 0);
2561 if (adapter
->mfe_shared
)
2562 mutex_unlock (&adapter
->mfe_lock
);
2566 static int dvb_frontend_release(struct inode
*inode
, struct file
*file
)
2568 struct dvb_device
*dvbdev
= file
->private_data
;
2569 struct dvb_frontend
*fe
= dvbdev
->priv
;
2570 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2573 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2575 if ((file
->f_flags
& O_ACCMODE
) != O_RDONLY
) {
2576 fepriv
->release_jiffies
= jiffies
;
2580 ret
= dvb_generic_release (inode
, file
);
2582 if (dvbdev
->users
== -1) {
2583 wake_up(&fepriv
->wait_queue
);
2584 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
2585 if (fe
->dvb
->mdev
&& fe
->dvb
->mdev
->disable_source
)
2586 fe
->dvb
->mdev
->disable_source(dvbdev
->entity
);
2588 if (fe
->exit
!= DVB_FE_NO_EXIT
)
2589 wake_up(&dvbdev
->wait_queue
);
2590 if (fe
->ops
.ts_bus_ctrl
)
2591 fe
->ops
.ts_bus_ctrl(fe
, 0);
2597 static const struct file_operations dvb_frontend_fops
= {
2598 .owner
= THIS_MODULE
,
2599 .unlocked_ioctl
= dvb_generic_ioctl
,
2600 .poll
= dvb_frontend_poll
,
2601 .open
= dvb_frontend_open
,
2602 .release
= dvb_frontend_release
,
2603 .llseek
= noop_llseek
,
2606 int dvb_frontend_suspend(struct dvb_frontend
*fe
)
2610 dev_dbg(fe
->dvb
->device
, "%s: adap=%d fe=%d\n", __func__
, fe
->dvb
->num
,
2613 if (fe
->ops
.tuner_ops
.suspend
)
2614 ret
= fe
->ops
.tuner_ops
.suspend(fe
);
2615 else if (fe
->ops
.tuner_ops
.sleep
)
2616 ret
= fe
->ops
.tuner_ops
.sleep(fe
);
2619 ret
= fe
->ops
.sleep(fe
);
2623 EXPORT_SYMBOL(dvb_frontend_suspend
);
2625 int dvb_frontend_resume(struct dvb_frontend
*fe
)
2627 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2630 dev_dbg(fe
->dvb
->device
, "%s: adap=%d fe=%d\n", __func__
, fe
->dvb
->num
,
2633 fe
->exit
= DVB_FE_DEVICE_RESUME
;
2635 ret
= fe
->ops
.init(fe
);
2637 if (fe
->ops
.tuner_ops
.resume
)
2638 ret
= fe
->ops
.tuner_ops
.resume(fe
);
2639 else if (fe
->ops
.tuner_ops
.init
)
2640 ret
= fe
->ops
.tuner_ops
.init(fe
);
2642 if (fe
->ops
.set_tone
&& fepriv
->tone
!= -1)
2643 fe
->ops
.set_tone(fe
, fepriv
->tone
);
2644 if (fe
->ops
.set_voltage
&& fepriv
->voltage
!= -1)
2645 fe
->ops
.set_voltage(fe
, fepriv
->voltage
);
2647 fe
->exit
= DVB_FE_NO_EXIT
;
2648 fepriv
->state
= FESTATE_RETUNE
;
2649 dvb_frontend_wakeup(fe
);
2653 EXPORT_SYMBOL(dvb_frontend_resume
);
2655 int dvb_register_frontend(struct dvb_adapter
* dvb
,
2656 struct dvb_frontend
* fe
)
2658 struct dvb_frontend_private
*fepriv
;
2659 const struct dvb_device dvbdev_template
= {
2663 .fops
= &dvb_frontend_fops
,
2664 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
2665 .name
= fe
->ops
.info
.name
,
2667 .kernel_ioctl
= dvb_frontend_ioctl
2670 dev_dbg(dvb
->device
, "%s:\n", __func__
);
2672 if (mutex_lock_interruptible(&frontend_mutex
))
2673 return -ERESTARTSYS
;
2675 fe
->frontend_priv
= kzalloc(sizeof(struct dvb_frontend_private
), GFP_KERNEL
);
2676 if (fe
->frontend_priv
== NULL
) {
2677 mutex_unlock(&frontend_mutex
);
2680 fepriv
= fe
->frontend_priv
;
2682 sema_init(&fepriv
->sem
, 1);
2683 init_waitqueue_head (&fepriv
->wait_queue
);
2684 init_waitqueue_head (&fepriv
->events
.wait_queue
);
2685 mutex_init(&fepriv
->events
.mtx
);
2687 fepriv
->inversion
= INVERSION_OFF
;
2689 dev_info(fe
->dvb
->device
,
2690 "DVB: registering adapter %i frontend %i (%s)...\n",
2691 fe
->dvb
->num
, fe
->id
, fe
->ops
.info
.name
);
2693 dvb_register_device (fe
->dvb
, &fepriv
->dvbdev
, &dvbdev_template
,
2694 fe
, DVB_DEVICE_FRONTEND
, 0);
2697 * Initialize the cache to the proper values according with the
2698 * first supported delivery system (ops->delsys[0])
2701 fe
->dtv_property_cache
.delivery_system
= fe
->ops
.delsys
[0];
2702 dvb_frontend_clear_cache(fe
);
2704 mutex_unlock(&frontend_mutex
);
2707 EXPORT_SYMBOL(dvb_register_frontend
);
2709 int dvb_unregister_frontend(struct dvb_frontend
* fe
)
2711 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2712 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2714 mutex_lock(&frontend_mutex
);
2715 dvb_frontend_stop (fe
);
2716 mutex_unlock(&frontend_mutex
);
2718 if (fepriv
->dvbdev
->users
< -1)
2719 wait_event(fepriv
->dvbdev
->wait_queue
,
2720 fepriv
->dvbdev
->users
==-1);
2722 mutex_lock(&frontend_mutex
);
2723 dvb_unregister_device (fepriv
->dvbdev
);
2725 /* fe is invalid now */
2727 mutex_unlock(&frontend_mutex
);
2730 EXPORT_SYMBOL(dvb_unregister_frontend
);
2732 #ifdef CONFIG_MEDIA_ATTACH
2733 void dvb_frontend_detach(struct dvb_frontend
* fe
)
2737 if (fe
->ops
.release_sec
) {
2738 fe
->ops
.release_sec(fe
);
2739 dvb_detach(fe
->ops
.release_sec
);
2741 if (fe
->ops
.tuner_ops
.release
) {
2742 fe
->ops
.tuner_ops
.release(fe
);
2743 dvb_detach(fe
->ops
.tuner_ops
.release
);
2745 if (fe
->ops
.analog_ops
.release
) {
2746 fe
->ops
.analog_ops
.release(fe
);
2747 dvb_detach(fe
->ops
.analog_ops
.release
);
2749 ptr
= (void*)fe
->ops
.release
;
2751 fe
->ops
.release(fe
);
2756 void dvb_frontend_detach(struct dvb_frontend
* fe
)
2758 if (fe
->ops
.release_sec
)
2759 fe
->ops
.release_sec(fe
);
2760 if (fe
->ops
.tuner_ops
.release
)
2761 fe
->ops
.tuner_ops
.release(fe
);
2762 if (fe
->ops
.analog_ops
.release
)
2763 fe
->ops
.analog_ops
.release(fe
);
2764 if (fe
->ops
.release
)
2765 fe
->ops
.release(fe
);
2768 EXPORT_SYMBOL(dvb_frontend_detach
);