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.
21 * To obtain the license, point your browser to
22 * http://www.gnu.org/copyleft/gpl.html
25 /* Enables DVBv3 compatibility bits at the headers */
28 #define pr_fmt(fmt) "dvb_frontend: " fmt
30 #include <linux/string.h>
31 #include <linux/kernel.h>
32 #include <linux/sched/signal.h>
33 #include <linux/wait.h>
34 #include <linux/slab.h>
35 #include <linux/poll.h>
36 #include <linux/semaphore.h>
37 #include <linux/module.h>
38 #include <linux/list.h>
39 #include <linux/freezer.h>
40 #include <linux/jiffies.h>
41 #include <linux/kthread.h>
42 #include <linux/ktime.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 dprintk(fmt, arg...) \
70 printk(KERN_DEBUG pr_fmt("%s: " fmt), __func__, ##arg)
72 #define FESTATE_IDLE 1
73 #define FESTATE_RETUNE 2
74 #define FESTATE_TUNING_FAST 4
75 #define FESTATE_TUNING_SLOW 8
76 #define FESTATE_TUNED 16
77 #define FESTATE_ZIGZAG_FAST 32
78 #define FESTATE_ZIGZAG_SLOW 64
79 #define FESTATE_DISEQC 128
80 #define FESTATE_ERROR 256
81 #define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC)
82 #define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST)
83 #define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW)
84 #define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW)
87 * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling.
88 * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune.
89 * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress.
90 * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower.
91 * FESTATE_TUNED. The frontend has successfully locked on.
92 * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it.
93 * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower.
94 * FESTATE_DISEQC. A DISEQC command has just been issued.
95 * FESTATE_WAITFORLOCK. When we're waiting for a lock.
96 * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan.
97 * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan.
98 * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again.
101 static DEFINE_MUTEX(frontend_mutex
);
103 struct dvb_frontend_private
{
104 /* thread/frontend values */
105 struct dvb_device
*dvbdev
;
106 struct dvb_frontend_parameters parameters_out
;
107 struct dvb_fe_events events
;
108 struct semaphore sem
;
109 struct list_head list_head
;
110 wait_queue_head_t wait_queue
;
111 struct task_struct
*thread
;
112 unsigned long release_jiffies
;
114 enum fe_status status
;
115 unsigned long tune_mode_flags
;
117 unsigned int reinitialise
;
121 /* swzigzag values */
123 unsigned int bending
;
125 unsigned int inversion
;
126 unsigned int auto_step
;
127 unsigned int auto_sub_step
;
128 unsigned int started_auto_step
;
129 unsigned int min_delay
;
130 unsigned int max_drift
;
131 unsigned int step_size
;
133 unsigned int check_wrapped
;
134 enum dvbfe_search algo_status
;
136 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
137 struct media_pipeline pipe
;
141 static void dvb_frontend_invoke_release(struct dvb_frontend
*fe
,
142 void (*release
)(struct dvb_frontend
*fe
));
144 static void __dvb_frontend_free(struct dvb_frontend
*fe
)
146 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
151 dvb_free_device(fepriv
->dvbdev
);
153 dvb_frontend_invoke_release(fe
, fe
->ops
.release
);
156 fe
->frontend_priv
= NULL
;
159 static void dvb_frontend_free(struct kref
*ref
)
161 struct dvb_frontend
*fe
=
162 container_of(ref
, struct dvb_frontend
, refcount
);
164 __dvb_frontend_free(fe
);
167 static void dvb_frontend_put(struct dvb_frontend
*fe
)
170 * Check if the frontend was registered, as otherwise
171 * kref was not initialized yet.
173 if (fe
->frontend_priv
)
174 kref_put(&fe
->refcount
, dvb_frontend_free
);
176 __dvb_frontend_free(fe
);
179 static void dvb_frontend_get(struct dvb_frontend
*fe
)
181 kref_get(&fe
->refcount
);
184 static void dvb_frontend_wakeup(struct dvb_frontend
*fe
);
185 static int dtv_get_frontend(struct dvb_frontend
*fe
,
186 struct dtv_frontend_properties
*c
,
187 struct dvb_frontend_parameters
*p_out
);
189 dtv_property_legacy_params_sync(struct dvb_frontend
*fe
,
190 const struct dtv_frontend_properties
*c
,
191 struct dvb_frontend_parameters
*p
);
193 static bool has_get_frontend(struct dvb_frontend
*fe
)
195 return fe
->ops
.get_frontend
!= NULL
;
199 * Due to DVBv3 API calls, a delivery system should be mapped into one of
200 * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC),
201 * otherwise, a DVBv3 call will fail.
203 enum dvbv3_emulation_type
{
211 static enum dvbv3_emulation_type
dvbv3_type(u32 delivery_system
)
213 switch (delivery_system
) {
214 case SYS_DVBC_ANNEX_A
:
215 case SYS_DVBC_ANNEX_C
:
230 case SYS_DVBC_ANNEX_B
:
238 * Doesn't know how to emulate those types and/or
239 * there's no frontend driver from this type yet
240 * with some emulation code, so, we're not sure yet how
241 * to handle them, or they're not compatible with a DVBv3 call.
243 return DVBV3_UNKNOWN
;
247 static void dvb_frontend_add_event(struct dvb_frontend
*fe
,
248 enum fe_status status
)
250 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
251 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
252 struct dvb_fe_events
*events
= &fepriv
->events
;
253 struct dvb_frontend_event
*e
;
256 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
258 if ((status
& FE_HAS_LOCK
) && has_get_frontend(fe
))
259 dtv_get_frontend(fe
, c
, &fepriv
->parameters_out
);
261 mutex_lock(&events
->mtx
);
263 wp
= (events
->eventw
+ 1) % MAX_EVENT
;
264 if (wp
== events
->eventr
) {
265 events
->overflow
= 1;
266 events
->eventr
= (events
->eventr
+ 1) % MAX_EVENT
;
269 e
= &events
->events
[events
->eventw
];
271 e
->parameters
= fepriv
->parameters_out
;
275 mutex_unlock(&events
->mtx
);
277 wake_up_interruptible (&events
->wait_queue
);
280 static int dvb_frontend_get_event(struct dvb_frontend
*fe
,
281 struct dvb_frontend_event
*event
, int flags
)
283 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
284 struct dvb_fe_events
*events
= &fepriv
->events
;
286 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
288 if (events
->overflow
) {
289 events
->overflow
= 0;
293 if (events
->eventw
== events
->eventr
) {
296 if (flags
& O_NONBLOCK
)
301 ret
= wait_event_interruptible (events
->wait_queue
,
302 events
->eventw
!= events
->eventr
);
304 if (down_interruptible (&fepriv
->sem
))
311 mutex_lock(&events
->mtx
);
312 *event
= events
->events
[events
->eventr
];
313 events
->eventr
= (events
->eventr
+ 1) % MAX_EVENT
;
314 mutex_unlock(&events
->mtx
);
319 static void dvb_frontend_clear_events(struct dvb_frontend
*fe
)
321 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
322 struct dvb_fe_events
*events
= &fepriv
->events
;
324 mutex_lock(&events
->mtx
);
325 events
->eventr
= events
->eventw
;
326 mutex_unlock(&events
->mtx
);
329 static void dvb_frontend_init(struct dvb_frontend
*fe
)
331 dev_dbg(fe
->dvb
->device
,
332 "%s: initialising adapter %i frontend %i (%s)...\n",
333 __func__
, fe
->dvb
->num
, fe
->id
, fe
->ops
.info
.name
);
337 if (fe
->ops
.tuner_ops
.init
) {
338 if (fe
->ops
.i2c_gate_ctrl
)
339 fe
->ops
.i2c_gate_ctrl(fe
, 1);
340 fe
->ops
.tuner_ops
.init(fe
);
341 if (fe
->ops
.i2c_gate_ctrl
)
342 fe
->ops
.i2c_gate_ctrl(fe
, 0);
346 void dvb_frontend_reinitialise(struct dvb_frontend
*fe
)
348 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
350 fepriv
->reinitialise
= 1;
351 dvb_frontend_wakeup(fe
);
353 EXPORT_SYMBOL(dvb_frontend_reinitialise
);
355 static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private
*fepriv
, int locked
)
358 struct dvb_frontend
*fe
= fepriv
->dvbdev
->priv
;
360 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
363 (fepriv
->quality
) = (fepriv
->quality
* 220 + 36*256) / 256;
365 (fepriv
->quality
) = (fepriv
->quality
* 220 + 0) / 256;
367 q2
= fepriv
->quality
- 128;
370 fepriv
->delay
= fepriv
->min_delay
+ q2
* HZ
/ (128*128);
374 * Performs automatic twiddling of frontend parameters.
376 * @param fe The frontend concerned.
377 * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT
378 * @returns Number of complete iterations that have been performed.
380 static int dvb_frontend_swzigzag_autotune(struct dvb_frontend
*fe
, int check_wrapped
)
385 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
386 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
, tmp
;
387 int original_inversion
= c
->inversion
;
388 u32 original_frequency
= c
->frequency
;
390 /* are we using autoinversion? */
391 autoinversion
= ((!(fe
->ops
.info
.caps
& FE_CAN_INVERSION_AUTO
)) &&
392 (c
->inversion
== INVERSION_AUTO
));
394 /* setup parameters correctly */
396 /* calculate the lnb_drift */
397 fepriv
->lnb_drift
= fepriv
->auto_step
* fepriv
->step_size
;
399 /* wrap the auto_step if we've exceeded the maximum drift */
400 if (fepriv
->lnb_drift
> fepriv
->max_drift
) {
401 fepriv
->auto_step
= 0;
402 fepriv
->auto_sub_step
= 0;
403 fepriv
->lnb_drift
= 0;
406 /* perform inversion and +/- zigzag */
407 switch(fepriv
->auto_sub_step
) {
409 /* try with the current inversion and current drift setting */
414 if (!autoinversion
) break;
416 fepriv
->inversion
= (fepriv
->inversion
== INVERSION_OFF
) ? INVERSION_ON
: INVERSION_OFF
;
421 if (fepriv
->lnb_drift
== 0) break;
423 fepriv
->lnb_drift
= -fepriv
->lnb_drift
;
428 if (fepriv
->lnb_drift
== 0) break;
429 if (!autoinversion
) break;
431 fepriv
->inversion
= (fepriv
->inversion
== INVERSION_OFF
) ? INVERSION_ON
: INVERSION_OFF
;
432 fepriv
->lnb_drift
= -fepriv
->lnb_drift
;
438 fepriv
->auto_sub_step
= -1; /* it'll be incremented to 0 in a moment */
442 if (!ready
) fepriv
->auto_sub_step
++;
445 /* if this attempt would hit where we started, indicate a complete
446 * iteration has occurred */
447 if ((fepriv
->auto_step
== fepriv
->started_auto_step
) &&
448 (fepriv
->auto_sub_step
== 0) && check_wrapped
) {
452 dev_dbg(fe
->dvb
->device
, "%s: drift:%i inversion:%i auto_step:%i " \
453 "auto_sub_step:%i started_auto_step:%i\n",
454 __func__
, fepriv
->lnb_drift
, fepriv
->inversion
,
455 fepriv
->auto_step
, fepriv
->auto_sub_step
,
456 fepriv
->started_auto_step
);
458 /* set the frontend itself */
459 c
->frequency
+= fepriv
->lnb_drift
;
461 c
->inversion
= fepriv
->inversion
;
463 if (fe
->ops
.set_frontend
)
464 fe_set_err
= fe
->ops
.set_frontend(fe
);
466 if (fe_set_err
< 0) {
467 fepriv
->state
= FESTATE_ERROR
;
471 c
->frequency
= original_frequency
;
472 c
->inversion
= original_inversion
;
474 fepriv
->auto_sub_step
++;
478 static void dvb_frontend_swzigzag(struct dvb_frontend
*fe
)
480 enum fe_status s
= FE_NONE
;
482 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
483 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
, tmp
;
485 /* if we've got no parameters, just keep idling */
486 if (fepriv
->state
& FESTATE_IDLE
) {
487 fepriv
->delay
= 3*HZ
;
492 /* in SCAN mode, we just set the frontend when asked and leave it alone */
493 if (fepriv
->tune_mode_flags
& FE_TUNE_MODE_ONESHOT
) {
494 if (fepriv
->state
& FESTATE_RETUNE
) {
496 if (fe
->ops
.set_frontend
)
497 retval
= fe
->ops
.set_frontend(fe
);
500 fepriv
->state
= FESTATE_ERROR
;
502 fepriv
->state
= FESTATE_TUNED
;
504 fepriv
->delay
= 3*HZ
;
509 /* get the frontend status */
510 if (fepriv
->state
& FESTATE_RETUNE
) {
513 if (fe
->ops
.read_status
)
514 fe
->ops
.read_status(fe
, &s
);
515 if (s
!= fepriv
->status
) {
516 dvb_frontend_add_event(fe
, s
);
521 /* if we're not tuned, and we have a lock, move to the TUNED state */
522 if ((fepriv
->state
& FESTATE_WAITFORLOCK
) && (s
& FE_HAS_LOCK
)) {
523 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
524 fepriv
->state
= FESTATE_TUNED
;
526 /* if we're tuned, then we have determined the correct inversion */
527 if ((!(fe
->ops
.info
.caps
& FE_CAN_INVERSION_AUTO
)) &&
528 (c
->inversion
== INVERSION_AUTO
)) {
529 c
->inversion
= fepriv
->inversion
;
534 /* if we are tuned already, check we're still locked */
535 if (fepriv
->state
& FESTATE_TUNED
) {
536 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
538 /* we're tuned, and the lock is still good... */
539 if (s
& FE_HAS_LOCK
) {
541 } else { /* if we _WERE_ tuned, but now don't have a lock */
542 fepriv
->state
= FESTATE_ZIGZAG_FAST
;
543 fepriv
->started_auto_step
= fepriv
->auto_step
;
544 fepriv
->check_wrapped
= 0;
548 /* don't actually do anything if we're in the LOSTLOCK state,
549 * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */
550 if ((fepriv
->state
& FESTATE_LOSTLOCK
) &&
551 (fe
->ops
.info
.caps
& FE_CAN_RECOVER
) && (fepriv
->max_drift
== 0)) {
552 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
556 /* don't do anything if we're in the DISEQC state, since this
557 * might be someone with a motorized dish controlled by DISEQC.
558 * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */
559 if (fepriv
->state
& FESTATE_DISEQC
) {
560 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
564 /* if we're in the RETUNE state, set everything up for a brand
565 * new scan, keeping the current inversion setting, as the next
566 * tune is _very_ likely to require the same */
567 if (fepriv
->state
& FESTATE_RETUNE
) {
568 fepriv
->lnb_drift
= 0;
569 fepriv
->auto_step
= 0;
570 fepriv
->auto_sub_step
= 0;
571 fepriv
->started_auto_step
= 0;
572 fepriv
->check_wrapped
= 0;
576 if ((fepriv
->state
& FESTATE_SEARCHING_FAST
) || (fepriv
->state
& FESTATE_RETUNE
)) {
577 fepriv
->delay
= fepriv
->min_delay
;
580 retval
= dvb_frontend_swzigzag_autotune(fe
,
581 fepriv
->check_wrapped
);
585 /* OK, if we've run out of trials at the fast speed.
586 * Drop back to slow for the _next_ attempt */
587 fepriv
->state
= FESTATE_SEARCHING_SLOW
;
588 fepriv
->started_auto_step
= fepriv
->auto_step
;
591 fepriv
->check_wrapped
= 1;
593 /* if we've just retuned, enter the ZIGZAG_FAST state.
594 * This ensures we cannot return from an
595 * FE_SET_FRONTEND ioctl before the first frontend tune
597 if (fepriv
->state
& FESTATE_RETUNE
) {
598 fepriv
->state
= FESTATE_TUNING_FAST
;
603 if (fepriv
->state
& FESTATE_SEARCHING_SLOW
) {
604 dvb_frontend_swzigzag_update_delay(fepriv
, s
& FE_HAS_LOCK
);
606 /* Note: don't bother checking for wrapping; we stay in this
607 * state until we get a lock */
608 dvb_frontend_swzigzag_autotune(fe
, 0);
612 static int dvb_frontend_is_exiting(struct dvb_frontend
*fe
)
614 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
616 if (fe
->exit
!= DVB_FE_NO_EXIT
)
619 if (fepriv
->dvbdev
->writers
== 1)
620 if (time_after_eq(jiffies
, fepriv
->release_jiffies
+
621 dvb_shutdown_timeout
* HZ
))
627 static int dvb_frontend_should_wakeup(struct dvb_frontend
*fe
)
629 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
631 if (fepriv
->wakeup
) {
635 return dvb_frontend_is_exiting(fe
);
638 static void dvb_frontend_wakeup(struct dvb_frontend
*fe
)
640 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
643 wake_up_interruptible(&fepriv
->wait_queue
);
646 static int dvb_frontend_thread(void *data
)
648 struct dvb_frontend
*fe
= data
;
649 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
650 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
651 enum fe_status s
= FE_NONE
;
652 enum dvbfe_algo algo
;
653 bool re_tune
= false;
654 bool semheld
= false;
656 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
658 fepriv
->check_wrapped
= 0;
660 fepriv
->delay
= 3*HZ
;
663 fepriv
->reinitialise
= 0;
665 dvb_frontend_init(fe
);
669 up(&fepriv
->sem
); /* is locked when we enter the thread... */
671 wait_event_interruptible_timeout(fepriv
->wait_queue
,
672 dvb_frontend_should_wakeup(fe
) || kthread_should_stop()
673 || freezing(current
),
676 if (kthread_should_stop() || dvb_frontend_is_exiting(fe
)) {
677 /* got signal or quitting */
678 if (!down_interruptible(&fepriv
->sem
))
680 fe
->exit
= DVB_FE_NORMAL_EXIT
;
687 if (down_interruptible(&fepriv
->sem
))
690 if (fepriv
->reinitialise
) {
691 dvb_frontend_init(fe
);
692 if (fe
->ops
.set_tone
&& fepriv
->tone
!= -1)
693 fe
->ops
.set_tone(fe
, fepriv
->tone
);
694 if (fe
->ops
.set_voltage
&& fepriv
->voltage
!= -1)
695 fe
->ops
.set_voltage(fe
, fepriv
->voltage
);
696 fepriv
->reinitialise
= 0;
699 /* do an iteration of the tuning loop */
700 if (fe
->ops
.get_frontend_algo
) {
701 algo
= fe
->ops
.get_frontend_algo(fe
);
704 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__
);
706 if (fepriv
->state
& FESTATE_RETUNE
) {
707 dev_dbg(fe
->dvb
->device
, "%s: Retune requested, FESTATE_RETUNE\n", __func__
);
709 fepriv
->state
= FESTATE_TUNED
;
715 fe
->ops
.tune(fe
, re_tune
, fepriv
->tune_mode_flags
, &fepriv
->delay
, &s
);
717 if (s
!= fepriv
->status
&& !(fepriv
->tune_mode_flags
& FE_TUNE_MODE_ONESHOT
)) {
718 dev_dbg(fe
->dvb
->device
, "%s: state changed, adding current state\n", __func__
);
719 dvb_frontend_add_event(fe
, s
);
724 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__
);
725 dvb_frontend_swzigzag(fe
);
727 case DVBFE_ALGO_CUSTOM
:
728 dev_dbg(fe
->dvb
->device
, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__
, fepriv
->state
);
729 if (fepriv
->state
& FESTATE_RETUNE
) {
730 dev_dbg(fe
->dvb
->device
, "%s: Retune requested, FESTAT_RETUNE\n", __func__
);
731 fepriv
->state
= FESTATE_TUNED
;
733 /* Case where we are going to search for a carrier
734 * User asked us to retune again for some reason, possibly
735 * requesting a search with a new set of parameters
737 if (fepriv
->algo_status
& DVBFE_ALGO_SEARCH_AGAIN
) {
738 if (fe
->ops
.search
) {
739 fepriv
->algo_status
= fe
->ops
.search(fe
);
740 /* We did do a search as was requested, the flags are
741 * now unset as well and has the flags wrt to search.
744 fepriv
->algo_status
&= ~DVBFE_ALGO_SEARCH_AGAIN
;
747 /* Track the carrier if the search was successful */
748 if (fepriv
->algo_status
!= DVBFE_ALGO_SEARCH_SUCCESS
) {
749 fepriv
->algo_status
|= DVBFE_ALGO_SEARCH_AGAIN
;
750 fepriv
->delay
= HZ
/ 2;
752 dtv_property_legacy_params_sync(fe
, c
, &fepriv
->parameters_out
);
753 fe
->ops
.read_status(fe
, &s
);
754 if (s
!= fepriv
->status
) {
755 dvb_frontend_add_event(fe
, s
); /* update event list */
757 if (!(s
& FE_HAS_LOCK
)) {
758 fepriv
->delay
= HZ
/ 10;
759 fepriv
->algo_status
|= DVBFE_ALGO_SEARCH_AGAIN
;
761 fepriv
->delay
= 60 * HZ
;
766 dev_dbg(fe
->dvb
->device
, "%s: UNDEFINED ALGO !\n", __func__
);
770 dvb_frontend_swzigzag(fe
);
774 if (dvb_powerdown_on_sleep
) {
775 if (fe
->ops
.set_voltage
)
776 fe
->ops
.set_voltage(fe
, SEC_VOLTAGE_OFF
);
777 if (fe
->ops
.tuner_ops
.sleep
) {
778 if (fe
->ops
.i2c_gate_ctrl
)
779 fe
->ops
.i2c_gate_ctrl(fe
, 1);
780 fe
->ops
.tuner_ops
.sleep(fe
);
781 if (fe
->ops
.i2c_gate_ctrl
)
782 fe
->ops
.i2c_gate_ctrl(fe
, 0);
788 fepriv
->thread
= NULL
;
789 if (kthread_should_stop())
790 fe
->exit
= DVB_FE_DEVICE_REMOVED
;
792 fe
->exit
= DVB_FE_NO_EXIT
;
797 dvb_frontend_wakeup(fe
);
801 static void dvb_frontend_stop(struct dvb_frontend
*fe
)
803 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
805 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
807 if (fe
->exit
!= DVB_FE_DEVICE_REMOVED
)
808 fe
->exit
= DVB_FE_NORMAL_EXIT
;
814 kthread_stop(fepriv
->thread
);
816 sema_init(&fepriv
->sem
, 1);
817 fepriv
->state
= FESTATE_IDLE
;
819 /* paranoia check in case a signal arrived */
821 dev_warn(fe
->dvb
->device
,
822 "dvb_frontend_stop: warning: thread %p won't exit\n",
827 * Sleep for the amount of time given by add_usec parameter
829 * This needs to be as precise as possible, as it affects the detection of
830 * the dish tone command at the satellite subsystem. The precision is improved
831 * by using a scheduled msleep followed by udelay for the remainder.
833 void dvb_frontend_sleep_until(ktime_t
*waketime
, u32 add_usec
)
837 *waketime
= ktime_add_us(*waketime
, add_usec
);
838 delta
= ktime_us_delta(ktime_get_boottime(), *waketime
);
840 msleep((delta
- 1500) / 1000);
841 delta
= ktime_us_delta(ktime_get_boottime(), *waketime
);
846 EXPORT_SYMBOL(dvb_frontend_sleep_until
);
848 static int dvb_frontend_start(struct dvb_frontend
*fe
)
851 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
852 struct task_struct
*fe_thread
;
854 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
856 if (fepriv
->thread
) {
857 if (fe
->exit
== DVB_FE_NO_EXIT
)
860 dvb_frontend_stop (fe
);
863 if (signal_pending(current
))
865 if (down_interruptible (&fepriv
->sem
))
868 fepriv
->state
= FESTATE_IDLE
;
869 fe
->exit
= DVB_FE_NO_EXIT
;
870 fepriv
->thread
= NULL
;
873 fe_thread
= kthread_run(dvb_frontend_thread
, fe
,
874 "kdvb-ad-%i-fe-%i", fe
->dvb
->num
,fe
->id
);
875 if (IS_ERR(fe_thread
)) {
876 ret
= PTR_ERR(fe_thread
);
877 dev_warn(fe
->dvb
->device
,
878 "dvb_frontend_start: failed to start kthread (%d)\n",
883 fepriv
->thread
= fe_thread
;
887 static void dvb_frontend_get_frequency_limits(struct dvb_frontend
*fe
,
888 u32
*freq_min
, u32
*freq_max
)
890 *freq_min
= max(fe
->ops
.info
.frequency_min
, fe
->ops
.tuner_ops
.info
.frequency_min
);
892 if (fe
->ops
.info
.frequency_max
== 0)
893 *freq_max
= fe
->ops
.tuner_ops
.info
.frequency_max
;
894 else if (fe
->ops
.tuner_ops
.info
.frequency_max
== 0)
895 *freq_max
= fe
->ops
.info
.frequency_max
;
897 *freq_max
= min(fe
->ops
.info
.frequency_max
, fe
->ops
.tuner_ops
.info
.frequency_max
);
899 if (*freq_min
== 0 || *freq_max
== 0)
900 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n",
901 fe
->dvb
->num
, fe
->id
);
904 static int dvb_frontend_check_parameters(struct dvb_frontend
*fe
)
906 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
910 /* range check: frequency */
911 dvb_frontend_get_frequency_limits(fe
, &freq_min
, &freq_max
);
912 if ((freq_min
&& c
->frequency
< freq_min
) ||
913 (freq_max
&& c
->frequency
> freq_max
)) {
914 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n",
915 fe
->dvb
->num
, fe
->id
, c
->frequency
,
920 /* range check: symbol rate */
921 switch (c
->delivery_system
) {
925 case SYS_DVBC_ANNEX_A
:
926 case SYS_DVBC_ANNEX_C
:
927 if ((fe
->ops
.info
.symbol_rate_min
&&
928 c
->symbol_rate
< fe
->ops
.info
.symbol_rate_min
) ||
929 (fe
->ops
.info
.symbol_rate_max
&&
930 c
->symbol_rate
> fe
->ops
.info
.symbol_rate_max
)) {
931 dev_warn(fe
->dvb
->device
, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n",
932 fe
->dvb
->num
, fe
->id
, c
->symbol_rate
,
933 fe
->ops
.info
.symbol_rate_min
,
934 fe
->ops
.info
.symbol_rate_max
);
944 static int dvb_frontend_clear_cache(struct dvb_frontend
*fe
)
946 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
950 delsys
= c
->delivery_system
;
951 memset(c
, 0, offsetof(struct dtv_frontend_properties
, strength
));
952 c
->delivery_system
= delsys
;
954 c
->state
= DTV_CLEAR
;
956 dev_dbg(fe
->dvb
->device
, "%s: Clearing cache for delivery system %d\n",
957 __func__
, c
->delivery_system
);
959 c
->transmission_mode
= TRANSMISSION_MODE_AUTO
;
960 c
->bandwidth_hz
= 0; /* AUTO */
961 c
->guard_interval
= GUARD_INTERVAL_AUTO
;
962 c
->hierarchy
= HIERARCHY_AUTO
;
964 c
->code_rate_HP
= FEC_AUTO
;
965 c
->code_rate_LP
= FEC_AUTO
;
966 c
->fec_inner
= FEC_AUTO
;
967 c
->rolloff
= ROLLOFF_AUTO
;
968 c
->voltage
= SEC_VOLTAGE_OFF
;
969 c
->sectone
= SEC_TONE_OFF
;
970 c
->pilot
= PILOT_AUTO
;
972 c
->isdbt_partial_reception
= 0;
973 c
->isdbt_sb_mode
= 0;
974 c
->isdbt_sb_subchannel
= 0;
975 c
->isdbt_sb_segment_idx
= 0;
976 c
->isdbt_sb_segment_count
= 0;
977 c
->isdbt_layer_enabled
= 0;
978 for (i
= 0; i
< 3; i
++) {
979 c
->layer
[i
].fec
= FEC_AUTO
;
980 c
->layer
[i
].modulation
= QAM_AUTO
;
981 c
->layer
[i
].interleaving
= 0;
982 c
->layer
[i
].segment_count
= 0;
985 c
->stream_id
= NO_STREAM_ID_FILTER
;
987 switch (c
->delivery_system
) {
991 c
->modulation
= QPSK
; /* implied for DVB-S in legacy API */
992 c
->rolloff
= ROLLOFF_35
;/* implied for DVB-S */
995 c
->modulation
= VSB_8
;
998 c
->symbol_rate
= 28860000;
999 c
->rolloff
= ROLLOFF_35
;
1000 c
->bandwidth_hz
= c
->symbol_rate
/ 100 * 135;
1003 c
->modulation
= QAM_AUTO
;
1012 #define _DTV_CMD(n, s, b) \
1021 char *name
; /* A display name for debugging purposes */
1023 __u32 cmd
; /* A unique ID */
1026 __u32 set
:1; /* Either a set or get property */
1027 __u32 buffer
:1; /* Does this property use the buffer? */
1028 __u32 reserved
:30; /* Align */
1031 static struct dtv_cmds_h dtv_cmds
[DTV_MAX_COMMAND
+ 1] = {
1032 _DTV_CMD(DTV_TUNE
, 1, 0),
1033 _DTV_CMD(DTV_CLEAR
, 1, 0),
1036 _DTV_CMD(DTV_FREQUENCY
, 1, 0),
1037 _DTV_CMD(DTV_BANDWIDTH_HZ
, 1, 0),
1038 _DTV_CMD(DTV_MODULATION
, 1, 0),
1039 _DTV_CMD(DTV_INVERSION
, 1, 0),
1040 _DTV_CMD(DTV_DISEQC_MASTER
, 1, 1),
1041 _DTV_CMD(DTV_SYMBOL_RATE
, 1, 0),
1042 _DTV_CMD(DTV_INNER_FEC
, 1, 0),
1043 _DTV_CMD(DTV_VOLTAGE
, 1, 0),
1044 _DTV_CMD(DTV_TONE
, 1, 0),
1045 _DTV_CMD(DTV_PILOT
, 1, 0),
1046 _DTV_CMD(DTV_ROLLOFF
, 1, 0),
1047 _DTV_CMD(DTV_DELIVERY_SYSTEM
, 1, 0),
1048 _DTV_CMD(DTV_HIERARCHY
, 1, 0),
1049 _DTV_CMD(DTV_CODE_RATE_HP
, 1, 0),
1050 _DTV_CMD(DTV_CODE_RATE_LP
, 1, 0),
1051 _DTV_CMD(DTV_GUARD_INTERVAL
, 1, 0),
1052 _DTV_CMD(DTV_TRANSMISSION_MODE
, 1, 0),
1053 _DTV_CMD(DTV_INTERLEAVING
, 1, 0),
1055 _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION
, 1, 0),
1056 _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING
, 1, 0),
1057 _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID
, 1, 0),
1058 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX
, 1, 0),
1059 _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT
, 1, 0),
1060 _DTV_CMD(DTV_ISDBT_LAYER_ENABLED
, 1, 0),
1061 _DTV_CMD(DTV_ISDBT_LAYERA_FEC
, 1, 0),
1062 _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION
, 1, 0),
1063 _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT
, 1, 0),
1064 _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING
, 1, 0),
1065 _DTV_CMD(DTV_ISDBT_LAYERB_FEC
, 1, 0),
1066 _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION
, 1, 0),
1067 _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT
, 1, 0),
1068 _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING
, 1, 0),
1069 _DTV_CMD(DTV_ISDBT_LAYERC_FEC
, 1, 0),
1070 _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION
, 1, 0),
1071 _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT
, 1, 0),
1072 _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING
, 1, 0),
1074 _DTV_CMD(DTV_STREAM_ID
, 1, 0),
1075 _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY
, 1, 0),
1076 _DTV_CMD(DTV_LNA
, 1, 0),
1079 _DTV_CMD(DTV_DISEQC_SLAVE_REPLY
, 0, 1),
1080 _DTV_CMD(DTV_API_VERSION
, 0, 0),
1082 _DTV_CMD(DTV_ENUM_DELSYS
, 0, 0),
1084 _DTV_CMD(DTV_ATSCMH_PARADE_ID
, 1, 0),
1085 _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE
, 1, 0),
1087 _DTV_CMD(DTV_ATSCMH_FIC_VER
, 0, 0),
1088 _DTV_CMD(DTV_ATSCMH_NOG
, 0, 0),
1089 _DTV_CMD(DTV_ATSCMH_TNOG
, 0, 0),
1090 _DTV_CMD(DTV_ATSCMH_SGN
, 0, 0),
1091 _DTV_CMD(DTV_ATSCMH_PRC
, 0, 0),
1092 _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE
, 0, 0),
1093 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI
, 0, 0),
1094 _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC
, 0, 0),
1095 _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE
, 0, 0),
1096 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A
, 0, 0),
1097 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B
, 0, 0),
1098 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C
, 0, 0),
1099 _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D
, 0, 0),
1101 /* Statistics API */
1102 _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH
, 0, 0),
1103 _DTV_CMD(DTV_STAT_CNR
, 0, 0),
1104 _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT
, 0, 0),
1105 _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT
, 0, 0),
1106 _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT
, 0, 0),
1107 _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT
, 0, 0),
1108 _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT
, 0, 0),
1109 _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT
, 0, 0),
1112 static void dtv_property_dump(struct dvb_frontend
*fe
,
1114 struct dtv_property
*tvp
)
1118 if (tvp
->cmd
<= 0 || tvp
->cmd
> DTV_MAX_COMMAND
) {
1119 dev_warn(fe
->dvb
->device
, "%s: %s tvp.cmd = 0x%08x undefined\n",
1121 is_set
? "SET" : "GET",
1126 dev_dbg(fe
->dvb
->device
, "%s: %s tvp.cmd = 0x%08x (%s)\n", __func__
,
1127 is_set
? "SET" : "GET",
1129 dtv_cmds
[tvp
->cmd
].name
);
1131 if (dtv_cmds
[tvp
->cmd
].buffer
) {
1132 dev_dbg(fe
->dvb
->device
, "%s: tvp.u.buffer.len = 0x%02x\n",
1133 __func__
, tvp
->u
.buffer
.len
);
1135 for(i
= 0; i
< tvp
->u
.buffer
.len
; i
++)
1136 dev_dbg(fe
->dvb
->device
,
1137 "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n",
1138 __func__
, i
, tvp
->u
.buffer
.data
[i
]);
1140 dev_dbg(fe
->dvb
->device
, "%s: tvp.u.data = 0x%08x\n", __func__
,
1145 /* Synchronise the legacy tuning parameters into the cache, so that demodulator
1146 * drivers can use a single set_frontend tuning function, regardless of whether
1147 * it's being used for the legacy or new API, reducing code and complexity.
1149 static int dtv_property_cache_sync(struct dvb_frontend
*fe
,
1150 struct dtv_frontend_properties
*c
,
1151 const struct dvb_frontend_parameters
*p
)
1153 c
->frequency
= p
->frequency
;
1154 c
->inversion
= p
->inversion
;
1156 switch (dvbv3_type(c
->delivery_system
)) {
1158 dev_dbg(fe
->dvb
->device
, "%s: Preparing QPSK req\n", __func__
);
1159 c
->symbol_rate
= p
->u
.qpsk
.symbol_rate
;
1160 c
->fec_inner
= p
->u
.qpsk
.fec_inner
;
1163 dev_dbg(fe
->dvb
->device
, "%s: Preparing QAM req\n", __func__
);
1164 c
->symbol_rate
= p
->u
.qam
.symbol_rate
;
1165 c
->fec_inner
= p
->u
.qam
.fec_inner
;
1166 c
->modulation
= p
->u
.qam
.modulation
;
1169 dev_dbg(fe
->dvb
->device
, "%s: Preparing OFDM req\n", __func__
);
1171 switch (p
->u
.ofdm
.bandwidth
) {
1172 case BANDWIDTH_10_MHZ
:
1173 c
->bandwidth_hz
= 10000000;
1175 case BANDWIDTH_8_MHZ
:
1176 c
->bandwidth_hz
= 8000000;
1178 case BANDWIDTH_7_MHZ
:
1179 c
->bandwidth_hz
= 7000000;
1181 case BANDWIDTH_6_MHZ
:
1182 c
->bandwidth_hz
= 6000000;
1184 case BANDWIDTH_5_MHZ
:
1185 c
->bandwidth_hz
= 5000000;
1187 case BANDWIDTH_1_712_MHZ
:
1188 c
->bandwidth_hz
= 1712000;
1190 case BANDWIDTH_AUTO
:
1191 c
->bandwidth_hz
= 0;
1194 c
->code_rate_HP
= p
->u
.ofdm
.code_rate_HP
;
1195 c
->code_rate_LP
= p
->u
.ofdm
.code_rate_LP
;
1196 c
->modulation
= p
->u
.ofdm
.constellation
;
1197 c
->transmission_mode
= p
->u
.ofdm
.transmission_mode
;
1198 c
->guard_interval
= p
->u
.ofdm
.guard_interval
;
1199 c
->hierarchy
= p
->u
.ofdm
.hierarchy_information
;
1202 dev_dbg(fe
->dvb
->device
, "%s: Preparing ATSC req\n", __func__
);
1203 c
->modulation
= p
->u
.vsb
.modulation
;
1204 if (c
->delivery_system
== SYS_ATSCMH
)
1206 if ((c
->modulation
== VSB_8
) || (c
->modulation
== VSB_16
))
1207 c
->delivery_system
= SYS_ATSC
;
1209 c
->delivery_system
= SYS_DVBC_ANNEX_B
;
1212 dev_err(fe
->dvb
->device
,
1213 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1214 __func__
, c
->delivery_system
);
1221 /* Ensure the cached values are set correctly in the frontend
1222 * legacy tuning structures, for the advanced tuning API.
1225 dtv_property_legacy_params_sync(struct dvb_frontend
*fe
,
1226 const struct dtv_frontend_properties
*c
,
1227 struct dvb_frontend_parameters
*p
)
1229 p
->frequency
= c
->frequency
;
1230 p
->inversion
= c
->inversion
;
1232 switch (dvbv3_type(c
->delivery_system
)) {
1234 dev_err(fe
->dvb
->device
,
1235 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
1236 __func__
, c
->delivery_system
);
1239 dev_dbg(fe
->dvb
->device
, "%s: Preparing QPSK req\n", __func__
);
1240 p
->u
.qpsk
.symbol_rate
= c
->symbol_rate
;
1241 p
->u
.qpsk
.fec_inner
= c
->fec_inner
;
1244 dev_dbg(fe
->dvb
->device
, "%s: Preparing QAM req\n", __func__
);
1245 p
->u
.qam
.symbol_rate
= c
->symbol_rate
;
1246 p
->u
.qam
.fec_inner
= c
->fec_inner
;
1247 p
->u
.qam
.modulation
= c
->modulation
;
1250 dev_dbg(fe
->dvb
->device
, "%s: Preparing OFDM req\n", __func__
);
1251 switch (c
->bandwidth_hz
) {
1253 p
->u
.ofdm
.bandwidth
= BANDWIDTH_10_MHZ
;
1256 p
->u
.ofdm
.bandwidth
= BANDWIDTH_8_MHZ
;
1259 p
->u
.ofdm
.bandwidth
= BANDWIDTH_7_MHZ
;
1262 p
->u
.ofdm
.bandwidth
= BANDWIDTH_6_MHZ
;
1265 p
->u
.ofdm
.bandwidth
= BANDWIDTH_5_MHZ
;
1268 p
->u
.ofdm
.bandwidth
= BANDWIDTH_1_712_MHZ
;
1272 p
->u
.ofdm
.bandwidth
= BANDWIDTH_AUTO
;
1274 p
->u
.ofdm
.code_rate_HP
= c
->code_rate_HP
;
1275 p
->u
.ofdm
.code_rate_LP
= c
->code_rate_LP
;
1276 p
->u
.ofdm
.constellation
= c
->modulation
;
1277 p
->u
.ofdm
.transmission_mode
= c
->transmission_mode
;
1278 p
->u
.ofdm
.guard_interval
= c
->guard_interval
;
1279 p
->u
.ofdm
.hierarchy_information
= c
->hierarchy
;
1282 dev_dbg(fe
->dvb
->device
, "%s: Preparing VSB req\n", __func__
);
1283 p
->u
.vsb
.modulation
= c
->modulation
;
1290 * dtv_get_frontend - calls a callback for retrieving DTV parameters
1291 * @fe: struct dvb_frontend pointer
1292 * @c: struct dtv_frontend_properties pointer (DVBv5 cache)
1293 * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct)
1295 * This routine calls either the DVBv3 or DVBv5 get_frontend call.
1296 * If c is not null, it will update the DVBv5 cache struct pointed by it.
1297 * If p_out is not null, it will update the DVBv3 params pointed by it.
1299 static int dtv_get_frontend(struct dvb_frontend
*fe
,
1300 struct dtv_frontend_properties
*c
,
1301 struct dvb_frontend_parameters
*p_out
)
1305 if (fe
->ops
.get_frontend
) {
1306 r
= fe
->ops
.get_frontend(fe
, c
);
1307 if (unlikely(r
< 0))
1310 dtv_property_legacy_params_sync(fe
, c
, p_out
);
1314 /* As everything is in cache, get_frontend fops are always supported */
1318 static int dvb_frontend_ioctl_legacy(struct file
*file
,
1319 unsigned int cmd
, void *parg
);
1320 static int dvb_frontend_ioctl_properties(struct file
*file
,
1321 unsigned int cmd
, void *parg
);
1323 static int dtv_property_process_get(struct dvb_frontend
*fe
,
1324 const struct dtv_frontend_properties
*c
,
1325 struct dtv_property
*tvp
,
1331 case DTV_ENUM_DELSYS
:
1333 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1334 tvp
->u
.buffer
.data
[ncaps
] = fe
->ops
.delsys
[ncaps
];
1337 tvp
->u
.buffer
.len
= ncaps
;
1340 tvp
->u
.data
= c
->frequency
;
1342 case DTV_MODULATION
:
1343 tvp
->u
.data
= c
->modulation
;
1345 case DTV_BANDWIDTH_HZ
:
1346 tvp
->u
.data
= c
->bandwidth_hz
;
1349 tvp
->u
.data
= c
->inversion
;
1351 case DTV_SYMBOL_RATE
:
1352 tvp
->u
.data
= c
->symbol_rate
;
1355 tvp
->u
.data
= c
->fec_inner
;
1358 tvp
->u
.data
= c
->pilot
;
1361 tvp
->u
.data
= c
->rolloff
;
1363 case DTV_DELIVERY_SYSTEM
:
1364 tvp
->u
.data
= c
->delivery_system
;
1367 tvp
->u
.data
= c
->voltage
;
1370 tvp
->u
.data
= c
->sectone
;
1372 case DTV_API_VERSION
:
1373 tvp
->u
.data
= (DVB_API_VERSION
<< 8) | DVB_API_VERSION_MINOR
;
1375 case DTV_CODE_RATE_HP
:
1376 tvp
->u
.data
= c
->code_rate_HP
;
1378 case DTV_CODE_RATE_LP
:
1379 tvp
->u
.data
= c
->code_rate_LP
;
1381 case DTV_GUARD_INTERVAL
:
1382 tvp
->u
.data
= c
->guard_interval
;
1384 case DTV_TRANSMISSION_MODE
:
1385 tvp
->u
.data
= c
->transmission_mode
;
1388 tvp
->u
.data
= c
->hierarchy
;
1390 case DTV_INTERLEAVING
:
1391 tvp
->u
.data
= c
->interleaving
;
1394 /* ISDB-T Support here */
1395 case DTV_ISDBT_PARTIAL_RECEPTION
:
1396 tvp
->u
.data
= c
->isdbt_partial_reception
;
1398 case DTV_ISDBT_SOUND_BROADCASTING
:
1399 tvp
->u
.data
= c
->isdbt_sb_mode
;
1401 case DTV_ISDBT_SB_SUBCHANNEL_ID
:
1402 tvp
->u
.data
= c
->isdbt_sb_subchannel
;
1404 case DTV_ISDBT_SB_SEGMENT_IDX
:
1405 tvp
->u
.data
= c
->isdbt_sb_segment_idx
;
1407 case DTV_ISDBT_SB_SEGMENT_COUNT
:
1408 tvp
->u
.data
= c
->isdbt_sb_segment_count
;
1410 case DTV_ISDBT_LAYER_ENABLED
:
1411 tvp
->u
.data
= c
->isdbt_layer_enabled
;
1413 case DTV_ISDBT_LAYERA_FEC
:
1414 tvp
->u
.data
= c
->layer
[0].fec
;
1416 case DTV_ISDBT_LAYERA_MODULATION
:
1417 tvp
->u
.data
= c
->layer
[0].modulation
;
1419 case DTV_ISDBT_LAYERA_SEGMENT_COUNT
:
1420 tvp
->u
.data
= c
->layer
[0].segment_count
;
1422 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING
:
1423 tvp
->u
.data
= c
->layer
[0].interleaving
;
1425 case DTV_ISDBT_LAYERB_FEC
:
1426 tvp
->u
.data
= c
->layer
[1].fec
;
1428 case DTV_ISDBT_LAYERB_MODULATION
:
1429 tvp
->u
.data
= c
->layer
[1].modulation
;
1431 case DTV_ISDBT_LAYERB_SEGMENT_COUNT
:
1432 tvp
->u
.data
= c
->layer
[1].segment_count
;
1434 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING
:
1435 tvp
->u
.data
= c
->layer
[1].interleaving
;
1437 case DTV_ISDBT_LAYERC_FEC
:
1438 tvp
->u
.data
= c
->layer
[2].fec
;
1440 case DTV_ISDBT_LAYERC_MODULATION
:
1441 tvp
->u
.data
= c
->layer
[2].modulation
;
1443 case DTV_ISDBT_LAYERC_SEGMENT_COUNT
:
1444 tvp
->u
.data
= c
->layer
[2].segment_count
;
1446 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING
:
1447 tvp
->u
.data
= c
->layer
[2].interleaving
;
1450 /* Multistream support */
1452 case DTV_DVBT2_PLP_ID_LEGACY
:
1453 tvp
->u
.data
= c
->stream_id
;
1457 case DTV_ATSCMH_FIC_VER
:
1458 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_fic_ver
;
1460 case DTV_ATSCMH_PARADE_ID
:
1461 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_parade_id
;
1463 case DTV_ATSCMH_NOG
:
1464 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_nog
;
1466 case DTV_ATSCMH_TNOG
:
1467 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_tnog
;
1469 case DTV_ATSCMH_SGN
:
1470 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sgn
;
1472 case DTV_ATSCMH_PRC
:
1473 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_prc
;
1475 case DTV_ATSCMH_RS_FRAME_MODE
:
1476 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_frame_mode
;
1478 case DTV_ATSCMH_RS_FRAME_ENSEMBLE
:
1479 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_frame_ensemble
;
1481 case DTV_ATSCMH_RS_CODE_MODE_PRI
:
1482 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_code_mode_pri
;
1484 case DTV_ATSCMH_RS_CODE_MODE_SEC
:
1485 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_rs_code_mode_sec
;
1487 case DTV_ATSCMH_SCCC_BLOCK_MODE
:
1488 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_block_mode
;
1490 case DTV_ATSCMH_SCCC_CODE_MODE_A
:
1491 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_a
;
1493 case DTV_ATSCMH_SCCC_CODE_MODE_B
:
1494 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_b
;
1496 case DTV_ATSCMH_SCCC_CODE_MODE_C
:
1497 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_c
;
1499 case DTV_ATSCMH_SCCC_CODE_MODE_D
:
1500 tvp
->u
.data
= fe
->dtv_property_cache
.atscmh_sccc_code_mode_d
;
1504 tvp
->u
.data
= c
->lna
;
1507 /* Fill quality measures */
1508 case DTV_STAT_SIGNAL_STRENGTH
:
1509 tvp
->u
.st
= c
->strength
;
1514 case DTV_STAT_PRE_ERROR_BIT_COUNT
:
1515 tvp
->u
.st
= c
->pre_bit_error
;
1517 case DTV_STAT_PRE_TOTAL_BIT_COUNT
:
1518 tvp
->u
.st
= c
->pre_bit_count
;
1520 case DTV_STAT_POST_ERROR_BIT_COUNT
:
1521 tvp
->u
.st
= c
->post_bit_error
;
1523 case DTV_STAT_POST_TOTAL_BIT_COUNT
:
1524 tvp
->u
.st
= c
->post_bit_count
;
1526 case DTV_STAT_ERROR_BLOCK_COUNT
:
1527 tvp
->u
.st
= c
->block_error
;
1529 case DTV_STAT_TOTAL_BLOCK_COUNT
:
1530 tvp
->u
.st
= c
->block_count
;
1533 dev_dbg(fe
->dvb
->device
,
1534 "%s: FE property %d doesn't exist\n",
1535 __func__
, tvp
->cmd
);
1539 /* Allow the frontend to override outgoing properties */
1540 if (fe
->ops
.get_property
) {
1541 r
= fe
->ops
.get_property(fe
, tvp
);
1546 dtv_property_dump(fe
, false, tvp
);
1551 static int dtv_set_frontend(struct dvb_frontend
*fe
);
1553 static bool is_dvbv3_delsys(u32 delsys
)
1555 return (delsys
== SYS_DVBT
) || (delsys
== SYS_DVBC_ANNEX_A
) ||
1556 (delsys
== SYS_DVBS
) || (delsys
== SYS_ATSC
);
1560 * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type
1561 * @fe: struct frontend;
1562 * @delsys: DVBv5 type that will be used for emulation
1564 * Provides emulation for delivery systems that are compatible with the old
1565 * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows
1566 * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent
1567 * parameters are compatible with DVB-S spec.
1569 static int emulate_delivery_system(struct dvb_frontend
*fe
, u32 delsys
)
1572 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1574 c
->delivery_system
= delsys
;
1577 * If the call is for ISDB-T, put it into full-seg, auto mode, TV
1579 if (c
->delivery_system
== SYS_ISDBT
) {
1580 dev_dbg(fe
->dvb
->device
,
1581 "%s: Using defaults for SYS_ISDBT\n",
1584 if (!c
->bandwidth_hz
)
1585 c
->bandwidth_hz
= 6000000;
1587 c
->isdbt_partial_reception
= 0;
1588 c
->isdbt_sb_mode
= 0;
1589 c
->isdbt_sb_subchannel
= 0;
1590 c
->isdbt_sb_segment_idx
= 0;
1591 c
->isdbt_sb_segment_count
= 0;
1592 c
->isdbt_layer_enabled
= 7;
1593 for (i
= 0; i
< 3; i
++) {
1594 c
->layer
[i
].fec
= FEC_AUTO
;
1595 c
->layer
[i
].modulation
= QAM_AUTO
;
1596 c
->layer
[i
].interleaving
= 0;
1597 c
->layer
[i
].segment_count
= 0;
1600 dev_dbg(fe
->dvb
->device
, "%s: change delivery system on cache to %d\n",
1601 __func__
, c
->delivery_system
);
1607 * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call
1608 * @fe: frontend struct
1609 * @desired_system: delivery system requested by the user
1611 * A DVBv5 call know what's the desired system it wants. So, set it.
1613 * There are, however, a few known issues with early DVBv5 applications that
1614 * are also handled by this logic:
1616 * 1) Some early apps use SYS_UNDEFINED as the desired delivery system.
1617 * This is an API violation, but, as we don't want to break userspace,
1618 * convert it to the first supported delivery system.
1619 * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for
1620 * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of
1621 * ISDB-T provided backward compat with DVB-T.
1623 static int dvbv5_set_delivery_system(struct dvb_frontend
*fe
,
1627 u32 delsys
= SYS_UNDEFINED
;
1628 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1629 enum dvbv3_emulation_type type
;
1632 * It was reported that some old DVBv5 applications were
1633 * filling delivery_system with SYS_UNDEFINED. If this happens,
1634 * assume that the application wants to use the first supported
1637 if (desired_system
== SYS_UNDEFINED
)
1638 desired_system
= fe
->ops
.delsys
[0];
1641 * This is a DVBv5 call. So, it likely knows the supported
1642 * delivery systems. So, check if the desired delivery system is
1646 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1647 if (fe
->ops
.delsys
[ncaps
] == desired_system
) {
1648 c
->delivery_system
= desired_system
;
1649 dev_dbg(fe
->dvb
->device
,
1650 "%s: Changing delivery system to %d\n",
1651 __func__
, desired_system
);
1658 * The requested delivery system isn't supported. Maybe userspace
1659 * is requesting a DVBv3 compatible delivery system.
1661 * The emulation only works if the desired system is one of the
1662 * delivery systems supported by DVBv3 API
1664 if (!is_dvbv3_delsys(desired_system
)) {
1665 dev_dbg(fe
->dvb
->device
,
1666 "%s: Delivery system %d not supported.\n",
1667 __func__
, desired_system
);
1671 type
= dvbv3_type(desired_system
);
1674 * Get the last non-DVBv3 delivery system that has the same type
1675 * of the desired system
1678 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1679 if (dvbv3_type(fe
->ops
.delsys
[ncaps
]) == type
)
1680 delsys
= fe
->ops
.delsys
[ncaps
];
1684 /* There's nothing compatible with the desired delivery system */
1685 if (delsys
== SYS_UNDEFINED
) {
1686 dev_dbg(fe
->dvb
->device
,
1687 "%s: Delivery system %d not supported on emulation mode.\n",
1688 __func__
, desired_system
);
1692 dev_dbg(fe
->dvb
->device
,
1693 "%s: Using delivery system %d emulated as if it were %d\n",
1694 __func__
, delsys
, desired_system
);
1696 return emulate_delivery_system(fe
, desired_system
);
1700 * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call
1701 * @fe: frontend struct
1703 * A DVBv3 call doesn't know what's the desired system it wants. It also
1704 * doesn't allow to switch between different types. Due to that, userspace
1705 * should use DVBv5 instead.
1706 * However, in order to avoid breaking userspace API, limited backward
1707 * compatibility support is provided.
1709 * There are some delivery systems that are incompatible with DVBv3 calls.
1711 * This routine should work fine for frontends that support just one delivery
1714 * For frontends that support multiple frontends:
1715 * 1) It defaults to use the first supported delivery system. There's an
1716 * userspace application that allows changing it at runtime;
1718 * 2) If the current delivery system is not compatible with DVBv3, it gets
1719 * the first one that it is compatible.
1721 * NOTE: in order for this to work with applications like Kaffeine that
1722 * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to
1723 * DVB-S, drivers that support both DVB-S and DVB-S2 should have the
1724 * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back
1727 static int dvbv3_set_delivery_system(struct dvb_frontend
*fe
)
1730 u32 delsys
= SYS_UNDEFINED
;
1731 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1733 /* If not set yet, defaults to the first supported delivery system */
1734 if (c
->delivery_system
== SYS_UNDEFINED
)
1735 c
->delivery_system
= fe
->ops
.delsys
[0];
1738 * Trivial case: just use the current one, if it already a DVBv3
1741 if (is_dvbv3_delsys(c
->delivery_system
)) {
1742 dev_dbg(fe
->dvb
->device
,
1743 "%s: Using delivery system to %d\n",
1744 __func__
, c
->delivery_system
);
1749 * Seek for the first delivery system that it is compatible with a
1753 while (ncaps
< MAX_DELSYS
&& fe
->ops
.delsys
[ncaps
]) {
1754 if (dvbv3_type(fe
->ops
.delsys
[ncaps
]) != DVBV3_UNKNOWN
) {
1755 delsys
= fe
->ops
.delsys
[ncaps
];
1760 if (delsys
== SYS_UNDEFINED
) {
1761 dev_dbg(fe
->dvb
->device
,
1762 "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n",
1766 return emulate_delivery_system(fe
, delsys
);
1769 static int dtv_property_process_set(struct dvb_frontend
*fe
,
1770 struct dtv_property
*tvp
,
1774 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1776 /* Allow the frontend to validate incoming properties */
1777 if (fe
->ops
.set_property
) {
1778 r
= fe
->ops
.set_property(fe
, tvp
);
1783 dtv_property_dump(fe
, true, tvp
);
1788 * Reset a cache of data specific to the frontend here. This does
1789 * not effect hardware.
1791 dvb_frontend_clear_cache(fe
);
1794 /* interpret the cache of data, build either a traditional frontend
1795 * tunerequest so we can pass validation in the FE_SET_FRONTEND
1798 c
->state
= tvp
->cmd
;
1799 dev_dbg(fe
->dvb
->device
, "%s: Finalised property cache\n",
1802 r
= dtv_set_frontend(fe
);
1805 c
->frequency
= tvp
->u
.data
;
1807 case DTV_MODULATION
:
1808 c
->modulation
= tvp
->u
.data
;
1810 case DTV_BANDWIDTH_HZ
:
1811 c
->bandwidth_hz
= tvp
->u
.data
;
1814 c
->inversion
= tvp
->u
.data
;
1816 case DTV_SYMBOL_RATE
:
1817 c
->symbol_rate
= tvp
->u
.data
;
1820 c
->fec_inner
= tvp
->u
.data
;
1823 c
->pilot
= tvp
->u
.data
;
1826 c
->rolloff
= tvp
->u
.data
;
1828 case DTV_DELIVERY_SYSTEM
:
1829 r
= dvbv5_set_delivery_system(fe
, tvp
->u
.data
);
1832 c
->voltage
= tvp
->u
.data
;
1833 r
= dvb_frontend_ioctl_legacy(file
, FE_SET_VOLTAGE
,
1834 (void *)c
->voltage
);
1837 c
->sectone
= tvp
->u
.data
;
1838 r
= dvb_frontend_ioctl_legacy(file
, FE_SET_TONE
,
1839 (void *)c
->sectone
);
1841 case DTV_CODE_RATE_HP
:
1842 c
->code_rate_HP
= tvp
->u
.data
;
1844 case DTV_CODE_RATE_LP
:
1845 c
->code_rate_LP
= tvp
->u
.data
;
1847 case DTV_GUARD_INTERVAL
:
1848 c
->guard_interval
= tvp
->u
.data
;
1850 case DTV_TRANSMISSION_MODE
:
1851 c
->transmission_mode
= tvp
->u
.data
;
1854 c
->hierarchy
= tvp
->u
.data
;
1856 case DTV_INTERLEAVING
:
1857 c
->interleaving
= tvp
->u
.data
;
1860 /* ISDB-T Support here */
1861 case DTV_ISDBT_PARTIAL_RECEPTION
:
1862 c
->isdbt_partial_reception
= tvp
->u
.data
;
1864 case DTV_ISDBT_SOUND_BROADCASTING
:
1865 c
->isdbt_sb_mode
= tvp
->u
.data
;
1867 case DTV_ISDBT_SB_SUBCHANNEL_ID
:
1868 c
->isdbt_sb_subchannel
= tvp
->u
.data
;
1870 case DTV_ISDBT_SB_SEGMENT_IDX
:
1871 c
->isdbt_sb_segment_idx
= tvp
->u
.data
;
1873 case DTV_ISDBT_SB_SEGMENT_COUNT
:
1874 c
->isdbt_sb_segment_count
= tvp
->u
.data
;
1876 case DTV_ISDBT_LAYER_ENABLED
:
1877 c
->isdbt_layer_enabled
= tvp
->u
.data
;
1879 case DTV_ISDBT_LAYERA_FEC
:
1880 c
->layer
[0].fec
= tvp
->u
.data
;
1882 case DTV_ISDBT_LAYERA_MODULATION
:
1883 c
->layer
[0].modulation
= tvp
->u
.data
;
1885 case DTV_ISDBT_LAYERA_SEGMENT_COUNT
:
1886 c
->layer
[0].segment_count
= tvp
->u
.data
;
1888 case DTV_ISDBT_LAYERA_TIME_INTERLEAVING
:
1889 c
->layer
[0].interleaving
= tvp
->u
.data
;
1891 case DTV_ISDBT_LAYERB_FEC
:
1892 c
->layer
[1].fec
= tvp
->u
.data
;
1894 case DTV_ISDBT_LAYERB_MODULATION
:
1895 c
->layer
[1].modulation
= tvp
->u
.data
;
1897 case DTV_ISDBT_LAYERB_SEGMENT_COUNT
:
1898 c
->layer
[1].segment_count
= tvp
->u
.data
;
1900 case DTV_ISDBT_LAYERB_TIME_INTERLEAVING
:
1901 c
->layer
[1].interleaving
= tvp
->u
.data
;
1903 case DTV_ISDBT_LAYERC_FEC
:
1904 c
->layer
[2].fec
= tvp
->u
.data
;
1906 case DTV_ISDBT_LAYERC_MODULATION
:
1907 c
->layer
[2].modulation
= tvp
->u
.data
;
1909 case DTV_ISDBT_LAYERC_SEGMENT_COUNT
:
1910 c
->layer
[2].segment_count
= tvp
->u
.data
;
1912 case DTV_ISDBT_LAYERC_TIME_INTERLEAVING
:
1913 c
->layer
[2].interleaving
= tvp
->u
.data
;
1916 /* Multistream support */
1918 case DTV_DVBT2_PLP_ID_LEGACY
:
1919 c
->stream_id
= tvp
->u
.data
;
1923 case DTV_ATSCMH_PARADE_ID
:
1924 fe
->dtv_property_cache
.atscmh_parade_id
= tvp
->u
.data
;
1926 case DTV_ATSCMH_RS_FRAME_ENSEMBLE
:
1927 fe
->dtv_property_cache
.atscmh_rs_frame_ensemble
= tvp
->u
.data
;
1931 c
->lna
= tvp
->u
.data
;
1932 if (fe
->ops
.set_lna
)
1933 r
= fe
->ops
.set_lna(fe
);
1945 static int dvb_frontend_ioctl(struct file
*file
,
1946 unsigned int cmd
, void *parg
)
1948 struct dvb_device
*dvbdev
= file
->private_data
;
1949 struct dvb_frontend
*fe
= dvbdev
->priv
;
1950 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1951 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
1952 int err
= -EOPNOTSUPP
;
1954 dev_dbg(fe
->dvb
->device
, "%s: (%d)\n", __func__
, _IOC_NR(cmd
));
1955 if (down_interruptible(&fepriv
->sem
))
1956 return -ERESTARTSYS
;
1958 if (fe
->exit
!= DVB_FE_NO_EXIT
) {
1963 if ((file
->f_flags
& O_ACCMODE
) == O_RDONLY
&&
1964 (_IOC_DIR(cmd
) != _IOC_READ
|| cmd
== FE_GET_EVENT
||
1965 cmd
== FE_DISEQC_RECV_SLAVE_REPLY
)) {
1970 if ((cmd
== FE_SET_PROPERTY
) || (cmd
== FE_GET_PROPERTY
))
1971 err
= dvb_frontend_ioctl_properties(file
, cmd
, parg
);
1973 c
->state
= DTV_UNDEFINED
;
1974 err
= dvb_frontend_ioctl_legacy(file
, cmd
, parg
);
1981 static int dvb_frontend_ioctl_properties(struct file
*file
,
1982 unsigned int cmd
, void *parg
)
1984 struct dvb_device
*dvbdev
= file
->private_data
;
1985 struct dvb_frontend
*fe
= dvbdev
->priv
;
1986 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
1987 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1990 struct dtv_properties
*tvps
= parg
;
1991 struct dtv_property
*tvp
= NULL
;
1994 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
1996 if (cmd
== FE_SET_PROPERTY
) {
1997 dev_dbg(fe
->dvb
->device
, "%s: properties.num = %d\n", __func__
, tvps
->num
);
1998 dev_dbg(fe
->dvb
->device
, "%s: properties.props = %p\n", __func__
, tvps
->props
);
2000 /* Put an arbitrary limit on the number of messages that can
2001 * be sent at once */
2002 if ((tvps
->num
== 0) || (tvps
->num
> DTV_IOCTL_MAX_MSGS
))
2005 tvp
= memdup_user(tvps
->props
, tvps
->num
* sizeof(*tvp
));
2007 return PTR_ERR(tvp
);
2009 for (i
= 0; i
< tvps
->num
; i
++) {
2010 err
= dtv_property_process_set(fe
, tvp
+ i
, file
);
2013 (tvp
+ i
)->result
= err
;
2016 if (c
->state
== DTV_TUNE
)
2017 dev_dbg(fe
->dvb
->device
, "%s: Property cache is full, tuning\n", __func__
);
2019 } else if (cmd
== FE_GET_PROPERTY
) {
2020 struct dtv_frontend_properties getp
= fe
->dtv_property_cache
;
2022 dev_dbg(fe
->dvb
->device
, "%s: properties.num = %d\n", __func__
, tvps
->num
);
2023 dev_dbg(fe
->dvb
->device
, "%s: properties.props = %p\n", __func__
, tvps
->props
);
2025 /* Put an arbitrary limit on the number of messages that can
2026 * be sent at once */
2027 if ((tvps
->num
== 0) || (tvps
->num
> DTV_IOCTL_MAX_MSGS
))
2030 tvp
= memdup_user(tvps
->props
, tvps
->num
* sizeof(*tvp
));
2032 return PTR_ERR(tvp
);
2035 * Let's use our own copy of property cache, in order to
2036 * avoid mangling with DTV zigzag logic, as drivers might
2037 * return crap, if they don't check if the data is available
2038 * before updating the properties cache.
2040 if (fepriv
->state
!= FESTATE_IDLE
) {
2041 err
= dtv_get_frontend(fe
, &getp
, NULL
);
2045 for (i
= 0; i
< tvps
->num
; i
++) {
2046 err
= dtv_property_process_get(fe
, &getp
, tvp
+ i
, file
);
2049 (tvp
+ i
)->result
= err
;
2052 if (copy_to_user((void __user
*)tvps
->props
, tvp
,
2053 tvps
->num
* sizeof(struct dtv_property
))) {
2066 static int dtv_set_frontend(struct dvb_frontend
*fe
)
2068 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2069 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
2070 struct dvb_frontend_tune_settings fetunesettings
;
2073 if (dvb_frontend_check_parameters(fe
) < 0)
2077 * Initialize output parameters to match the values given by
2078 * the user. FE_SET_FRONTEND triggers an initial frontend event
2079 * with status = 0, which copies output parameters to userspace.
2081 dtv_property_legacy_params_sync(fe
, c
, &fepriv
->parameters_out
);
2084 * Be sure that the bandwidth will be filled for all
2085 * non-satellite systems, as tuners need to know what
2086 * low pass/Nyquist half filter should be applied, in
2087 * order to avoid inter-channel noise.
2089 * ISDB-T and DVB-T/T2 already sets bandwidth.
2090 * ATSC and DVB-C don't set, so, the core should fill it.
2092 * On DVB-C Annex A and C, the bandwidth is a function of
2093 * the roll-off and symbol rate. Annex B defines different
2094 * roll-off factors depending on the modulation. Fortunately,
2095 * Annex B is only used with 6MHz, so there's no need to
2098 * While not officially supported, a side effect of handling it at
2099 * the cache level is that a program could retrieve the bandwidth
2100 * via DTV_BANDWIDTH_HZ, which may be useful for test programs.
2102 switch (c
->delivery_system
) {
2104 case SYS_DVBC_ANNEX_B
:
2105 c
->bandwidth_hz
= 6000000;
2107 case SYS_DVBC_ANNEX_A
:
2110 case SYS_DVBC_ANNEX_C
:
2119 switch (c
->rolloff
) {
2135 c
->bandwidth_hz
= mult_frac(c
->symbol_rate
, rolloff
, 100);
2137 /* force auto frequency inversion if requested */
2138 if (dvb_force_auto_inversion
)
2139 c
->inversion
= INVERSION_AUTO
;
2142 * without hierarchical coding code_rate_LP is irrelevant,
2143 * so we tolerate the otherwise invalid FEC_NONE setting
2145 if (c
->hierarchy
== HIERARCHY_NONE
&& c
->code_rate_LP
== FEC_NONE
)
2146 c
->code_rate_LP
= FEC_AUTO
;
2148 /* get frontend-specific tuning settings */
2149 memset(&fetunesettings
, 0, sizeof(struct dvb_frontend_tune_settings
));
2150 if (fe
->ops
.get_tune_settings
&& (fe
->ops
.get_tune_settings(fe
, &fetunesettings
) == 0)) {
2151 fepriv
->min_delay
= (fetunesettings
.min_delay_ms
* HZ
) / 1000;
2152 fepriv
->max_drift
= fetunesettings
.max_drift
;
2153 fepriv
->step_size
= fetunesettings
.step_size
;
2155 /* default values */
2156 switch (c
->delivery_system
) {
2161 case SYS_DVBC_ANNEX_A
:
2162 case SYS_DVBC_ANNEX_C
:
2163 fepriv
->min_delay
= HZ
/ 20;
2164 fepriv
->step_size
= c
->symbol_rate
/ 16000;
2165 fepriv
->max_drift
= c
->symbol_rate
/ 2000;
2171 fepriv
->min_delay
= HZ
/ 20;
2172 fepriv
->step_size
= fe
->ops
.info
.frequency_stepsize
* 2;
2173 fepriv
->max_drift
= (fe
->ops
.info
.frequency_stepsize
* 2) + 1;
2177 * FIXME: This sounds wrong! if freqency_stepsize is
2178 * defined by the frontend, why not use it???
2180 fepriv
->min_delay
= HZ
/ 20;
2181 fepriv
->step_size
= 0; /* no zigzag */
2182 fepriv
->max_drift
= 0;
2186 if (dvb_override_tune_delay
> 0)
2187 fepriv
->min_delay
= (dvb_override_tune_delay
* HZ
) / 1000;
2189 fepriv
->state
= FESTATE_RETUNE
;
2191 /* Request the search algorithm to search */
2192 fepriv
->algo_status
|= DVBFE_ALGO_SEARCH_AGAIN
;
2194 dvb_frontend_clear_events(fe
);
2195 dvb_frontend_add_event(fe
, 0);
2196 dvb_frontend_wakeup(fe
);
2203 static int dvb_frontend_ioctl_legacy(struct file
*file
,
2204 unsigned int cmd
, void *parg
)
2206 struct dvb_device
*dvbdev
= file
->private_data
;
2207 struct dvb_frontend
*fe
= dvbdev
->priv
;
2208 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2209 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
2210 int err
= -EOPNOTSUPP
;
2214 struct dvb_frontend_info
* info
= parg
;
2216 memcpy(info
, &fe
->ops
.info
, sizeof(struct dvb_frontend_info
));
2217 dvb_frontend_get_frequency_limits(fe
, &info
->frequency_min
, &info
->frequency_max
);
2220 * Associate the 4 delivery systems supported by DVBv3
2221 * API with their DVBv5 counterpart. For the other standards,
2222 * use the closest type, assuming that it would hopefully
2223 * work with a DVBv3 application.
2224 * It should be noticed that, on multi-frontend devices with
2225 * different types (terrestrial and cable, for example),
2226 * a pure DVBv3 application won't be able to use all delivery
2227 * systems. Yet, changing the DVBv5 cache to the other delivery
2228 * system should be enough for making it work.
2230 switch (dvbv3_type(c
->delivery_system
)) {
2232 info
->type
= FE_QPSK
;
2235 info
->type
= FE_ATSC
;
2238 info
->type
= FE_QAM
;
2241 info
->type
= FE_OFDM
;
2244 dev_err(fe
->dvb
->device
,
2245 "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n",
2246 __func__
, c
->delivery_system
);
2247 fe
->ops
.info
.type
= FE_OFDM
;
2249 dev_dbg(fe
->dvb
->device
, "%s: current delivery system on cache: %d, V3 type: %d\n",
2250 __func__
, c
->delivery_system
, fe
->ops
.info
.type
);
2252 /* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */
2253 if (!(fepriv
->tune_mode_flags
& FE_TUNE_MODE_ONESHOT
))
2254 info
->caps
|= FE_CAN_INVERSION_AUTO
;
2259 case FE_READ_STATUS
: {
2260 enum fe_status
*status
= parg
;
2262 /* if retune was requested but hasn't occurred yet, prevent
2263 * that user get signal state from previous tuning */
2264 if (fepriv
->state
== FESTATE_RETUNE
||
2265 fepriv
->state
== FESTATE_ERROR
) {
2271 if (fe
->ops
.read_status
)
2272 err
= fe
->ops
.read_status(fe
, status
);
2277 if (fe
->ops
.read_ber
) {
2279 err
= fe
->ops
.read_ber(fe
, (__u32
*) parg
);
2285 case FE_READ_SIGNAL_STRENGTH
:
2286 if (fe
->ops
.read_signal_strength
) {
2288 err
= fe
->ops
.read_signal_strength(fe
, (__u16
*) parg
);
2295 if (fe
->ops
.read_snr
) {
2297 err
= fe
->ops
.read_snr(fe
, (__u16
*) parg
);
2303 case FE_READ_UNCORRECTED_BLOCKS
:
2304 if (fe
->ops
.read_ucblocks
) {
2306 err
= fe
->ops
.read_ucblocks(fe
, (__u32
*) parg
);
2312 case FE_DISEQC_RESET_OVERLOAD
:
2313 if (fe
->ops
.diseqc_reset_overload
) {
2314 err
= fe
->ops
.diseqc_reset_overload(fe
);
2315 fepriv
->state
= FESTATE_DISEQC
;
2320 case FE_DISEQC_SEND_MASTER_CMD
:
2321 if (fe
->ops
.diseqc_send_master_cmd
) {
2322 struct dvb_diseqc_master_cmd
*cmd
= parg
;
2324 if (cmd
->msg_len
> sizeof(cmd
->msg
)) {
2328 err
= fe
->ops
.diseqc_send_master_cmd(fe
, cmd
);
2329 fepriv
->state
= FESTATE_DISEQC
;
2334 case FE_DISEQC_SEND_BURST
:
2335 if (fe
->ops
.diseqc_send_burst
) {
2336 err
= fe
->ops
.diseqc_send_burst(fe
,
2337 (enum fe_sec_mini_cmd
)parg
);
2338 fepriv
->state
= FESTATE_DISEQC
;
2344 if (fe
->ops
.set_tone
) {
2345 err
= fe
->ops
.set_tone(fe
,
2346 (enum fe_sec_tone_mode
)parg
);
2347 fepriv
->tone
= (enum fe_sec_tone_mode
)parg
;
2348 fepriv
->state
= FESTATE_DISEQC
;
2353 case FE_SET_VOLTAGE
:
2354 if (fe
->ops
.set_voltage
) {
2355 err
= fe
->ops
.set_voltage(fe
,
2356 (enum fe_sec_voltage
)parg
);
2357 fepriv
->voltage
= (enum fe_sec_voltage
)parg
;
2358 fepriv
->state
= FESTATE_DISEQC
;
2363 case FE_DISHNETWORK_SEND_LEGACY_CMD
:
2364 if (fe
->ops
.dishnetwork_send_legacy_command
) {
2365 err
= fe
->ops
.dishnetwork_send_legacy_command(fe
,
2366 (unsigned long)parg
);
2367 fepriv
->state
= FESTATE_DISEQC
;
2369 } else if (fe
->ops
.set_voltage
) {
2371 * NOTE: This is a fallback condition. Some frontends
2372 * (stv0299 for instance) take longer than 8msec to
2373 * respond to a set_voltage command. Those switches
2374 * need custom routines to switch properly. For all
2375 * other frontends, the following should work ok.
2376 * Dish network legacy switches (as used by Dish500)
2377 * are controlled by sending 9-bit command words
2378 * spaced 8msec apart.
2379 * the actual command word is switch/port dependent
2380 * so it is up to the userspace application to send
2381 * the right command.
2382 * The command must always start with a '0' after
2383 * initialization, so parg is 8 bits and does not
2384 * include the initialization or start bit
2386 unsigned long swcmd
= ((unsigned long) parg
) << 1;
2391 if (dvb_frontend_debug
)
2392 dprintk("%s switch command: 0x%04lx\n",
2394 nexttime
= ktime_get_boottime();
2395 if (dvb_frontend_debug
)
2397 /* before sending a command, initialize by sending
2398 * a 32ms 18V to the switch
2400 fe
->ops
.set_voltage(fe
, SEC_VOLTAGE_18
);
2401 dvb_frontend_sleep_until(&nexttime
, 32000);
2403 for (i
= 0; i
< 9; i
++) {
2404 if (dvb_frontend_debug
)
2405 tv
[i
+1] = ktime_get_boottime();
2406 if ((swcmd
& 0x01) != last
) {
2407 /* set voltage to (last ? 13V : 18V) */
2408 fe
->ops
.set_voltage(fe
, (last
) ? SEC_VOLTAGE_13
: SEC_VOLTAGE_18
);
2409 last
= (last
) ? 0 : 1;
2413 dvb_frontend_sleep_until(&nexttime
, 8000);
2415 if (dvb_frontend_debug
) {
2416 dprintk("%s(%d): switch delay (should be 32k followed by all 8k)\n",
2417 __func__
, fe
->dvb
->num
);
2418 for (i
= 1; i
< 10; i
++)
2419 pr_info("%d: %d\n", i
,
2420 (int) ktime_us_delta(tv
[i
], tv
[i
-1]));
2423 fepriv
->state
= FESTATE_DISEQC
;
2428 case FE_DISEQC_RECV_SLAVE_REPLY
:
2429 if (fe
->ops
.diseqc_recv_slave_reply
)
2430 err
= fe
->ops
.diseqc_recv_slave_reply(fe
, (struct dvb_diseqc_slave_reply
*) parg
);
2433 case FE_ENABLE_HIGH_LNB_VOLTAGE
:
2434 if (fe
->ops
.enable_high_lnb_voltage
)
2435 err
= fe
->ops
.enable_high_lnb_voltage(fe
, (long) parg
);
2438 case FE_SET_FRONTEND
:
2439 err
= dvbv3_set_delivery_system(fe
);
2443 err
= dtv_property_cache_sync(fe
, c
, parg
);
2446 err
= dtv_set_frontend(fe
);
2449 err
= dvb_frontend_get_event (fe
, parg
, file
->f_flags
);
2452 case FE_GET_FRONTEND
: {
2453 struct dtv_frontend_properties getp
= fe
->dtv_property_cache
;
2456 * Let's use our own copy of property cache, in order to
2457 * avoid mangling with DTV zigzag logic, as drivers might
2458 * return crap, if they don't check if the data is available
2459 * before updating the properties cache.
2461 err
= dtv_get_frontend(fe
, &getp
, parg
);
2464 case FE_SET_FRONTEND_TUNE_MODE
:
2465 fepriv
->tune_mode_flags
= (unsigned long) parg
;
2474 static unsigned int dvb_frontend_poll(struct file
*file
, struct poll_table_struct
*wait
)
2476 struct dvb_device
*dvbdev
= file
->private_data
;
2477 struct dvb_frontend
*fe
= dvbdev
->priv
;
2478 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2480 dev_dbg_ratelimited(fe
->dvb
->device
, "%s:\n", __func__
);
2482 poll_wait (file
, &fepriv
->events
.wait_queue
, wait
);
2484 if (fepriv
->events
.eventw
!= fepriv
->events
.eventr
)
2485 return (POLLIN
| POLLRDNORM
| POLLPRI
);
2490 static int dvb_frontend_open(struct inode
*inode
, struct file
*file
)
2492 struct dvb_device
*dvbdev
= file
->private_data
;
2493 struct dvb_frontend
*fe
= dvbdev
->priv
;
2494 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2495 struct dvb_adapter
*adapter
= fe
->dvb
;
2498 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2499 if (fe
->exit
== DVB_FE_DEVICE_REMOVED
)
2502 if (adapter
->mfe_shared
) {
2503 mutex_lock (&adapter
->mfe_lock
);
2505 if (adapter
->mfe_dvbdev
== NULL
)
2506 adapter
->mfe_dvbdev
= dvbdev
;
2508 else if (adapter
->mfe_dvbdev
!= dvbdev
) {
2510 *mfedev
= adapter
->mfe_dvbdev
;
2512 *mfe
= mfedev
->priv
;
2513 struct dvb_frontend_private
2514 *mfepriv
= mfe
->frontend_priv
;
2515 int mferetry
= (dvb_mfe_wait_time
<< 1);
2517 mutex_unlock (&adapter
->mfe_lock
);
2518 while (mferetry
-- && (mfedev
->users
!= -1 ||
2519 mfepriv
->thread
!= NULL
)) {
2520 if(msleep_interruptible(500)) {
2521 if(signal_pending(current
))
2526 mutex_lock (&adapter
->mfe_lock
);
2527 if(adapter
->mfe_dvbdev
!= dvbdev
) {
2528 mfedev
= adapter
->mfe_dvbdev
;
2530 mfepriv
= mfe
->frontend_priv
;
2531 if (mfedev
->users
!= -1 ||
2532 mfepriv
->thread
!= NULL
) {
2533 mutex_unlock (&adapter
->mfe_lock
);
2536 adapter
->mfe_dvbdev
= dvbdev
;
2541 if (dvbdev
->users
== -1 && fe
->ops
.ts_bus_ctrl
) {
2542 if ((ret
= fe
->ops
.ts_bus_ctrl(fe
, 1)) < 0)
2545 /* If we took control of the bus, we need to force
2546 reinitialization. This is because many ts_bus_ctrl()
2547 functions strobe the RESET pin on the demod, and if the
2548 frontend thread already exists then the dvb_init() routine
2549 won't get called (which is what usually does initial
2550 register configuration). */
2551 fepriv
->reinitialise
= 1;
2554 if ((ret
= dvb_generic_open (inode
, file
)) < 0)
2557 if ((file
->f_flags
& O_ACCMODE
) != O_RDONLY
) {
2558 /* normal tune mode when opened R/W */
2559 fepriv
->tune_mode_flags
&= ~FE_TUNE_MODE_ONESHOT
;
2561 fepriv
->voltage
= -1;
2563 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
2564 if (fe
->dvb
->mdev
) {
2565 mutex_lock(&fe
->dvb
->mdev
->graph_mutex
);
2566 if (fe
->dvb
->mdev
->enable_source
)
2567 ret
= fe
->dvb
->mdev
->enable_source(
2570 mutex_unlock(&fe
->dvb
->mdev
->graph_mutex
);
2572 dev_err(fe
->dvb
->device
,
2573 "Tuner is busy. Error %d\n", ret
);
2578 ret
= dvb_frontend_start (fe
);
2582 /* empty event queue */
2583 fepriv
->events
.eventr
= fepriv
->events
.eventw
= 0;
2586 dvb_frontend_get(fe
);
2588 if (adapter
->mfe_shared
)
2589 mutex_unlock (&adapter
->mfe_lock
);
2593 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
2594 if (fe
->dvb
->mdev
) {
2595 mutex_lock(&fe
->dvb
->mdev
->graph_mutex
);
2596 if (fe
->dvb
->mdev
->disable_source
)
2597 fe
->dvb
->mdev
->disable_source(dvbdev
->entity
);
2598 mutex_unlock(&fe
->dvb
->mdev
->graph_mutex
);
2602 dvb_generic_release(inode
, file
);
2604 if (dvbdev
->users
== -1 && fe
->ops
.ts_bus_ctrl
)
2605 fe
->ops
.ts_bus_ctrl(fe
, 0);
2607 if (adapter
->mfe_shared
)
2608 mutex_unlock (&adapter
->mfe_lock
);
2612 static int dvb_frontend_release(struct inode
*inode
, struct file
*file
)
2614 struct dvb_device
*dvbdev
= file
->private_data
;
2615 struct dvb_frontend
*fe
= dvbdev
->priv
;
2616 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2619 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2621 if ((file
->f_flags
& O_ACCMODE
) != O_RDONLY
) {
2622 fepriv
->release_jiffies
= jiffies
;
2626 ret
= dvb_generic_release (inode
, file
);
2628 if (dvbdev
->users
== -1) {
2629 wake_up(&fepriv
->wait_queue
);
2630 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
2631 if (fe
->dvb
->mdev
) {
2632 mutex_lock(&fe
->dvb
->mdev
->graph_mutex
);
2633 if (fe
->dvb
->mdev
->disable_source
)
2634 fe
->dvb
->mdev
->disable_source(dvbdev
->entity
);
2635 mutex_unlock(&fe
->dvb
->mdev
->graph_mutex
);
2638 if (fe
->exit
!= DVB_FE_NO_EXIT
)
2639 wake_up(&dvbdev
->wait_queue
);
2640 if (fe
->ops
.ts_bus_ctrl
)
2641 fe
->ops
.ts_bus_ctrl(fe
, 0);
2644 dvb_frontend_put(fe
);
2649 static const struct file_operations dvb_frontend_fops
= {
2650 .owner
= THIS_MODULE
,
2651 .unlocked_ioctl
= dvb_generic_ioctl
,
2652 .poll
= dvb_frontend_poll
,
2653 .open
= dvb_frontend_open
,
2654 .release
= dvb_frontend_release
,
2655 .llseek
= noop_llseek
,
2658 int dvb_frontend_suspend(struct dvb_frontend
*fe
)
2662 dev_dbg(fe
->dvb
->device
, "%s: adap=%d fe=%d\n", __func__
, fe
->dvb
->num
,
2665 if (fe
->ops
.tuner_ops
.suspend
)
2666 ret
= fe
->ops
.tuner_ops
.suspend(fe
);
2667 else if (fe
->ops
.tuner_ops
.sleep
)
2668 ret
= fe
->ops
.tuner_ops
.sleep(fe
);
2671 ret
= fe
->ops
.sleep(fe
);
2675 EXPORT_SYMBOL(dvb_frontend_suspend
);
2677 int dvb_frontend_resume(struct dvb_frontend
*fe
)
2679 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2682 dev_dbg(fe
->dvb
->device
, "%s: adap=%d fe=%d\n", __func__
, fe
->dvb
->num
,
2685 fe
->exit
= DVB_FE_DEVICE_RESUME
;
2687 ret
= fe
->ops
.init(fe
);
2689 if (fe
->ops
.tuner_ops
.resume
)
2690 ret
= fe
->ops
.tuner_ops
.resume(fe
);
2691 else if (fe
->ops
.tuner_ops
.init
)
2692 ret
= fe
->ops
.tuner_ops
.init(fe
);
2694 if (fe
->ops
.set_tone
&& fepriv
->tone
!= -1)
2695 fe
->ops
.set_tone(fe
, fepriv
->tone
);
2696 if (fe
->ops
.set_voltage
&& fepriv
->voltage
!= -1)
2697 fe
->ops
.set_voltage(fe
, fepriv
->voltage
);
2699 fe
->exit
= DVB_FE_NO_EXIT
;
2700 fepriv
->state
= FESTATE_RETUNE
;
2701 dvb_frontend_wakeup(fe
);
2705 EXPORT_SYMBOL(dvb_frontend_resume
);
2707 int dvb_register_frontend(struct dvb_adapter
* dvb
,
2708 struct dvb_frontend
* fe
)
2710 struct dvb_frontend_private
*fepriv
;
2711 const struct dvb_device dvbdev_template
= {
2715 .fops
= &dvb_frontend_fops
,
2716 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
2717 .name
= fe
->ops
.info
.name
,
2719 .kernel_ioctl
= dvb_frontend_ioctl
2722 dev_dbg(dvb
->device
, "%s:\n", __func__
);
2724 if (mutex_lock_interruptible(&frontend_mutex
))
2725 return -ERESTARTSYS
;
2727 fe
->frontend_priv
= kzalloc(sizeof(struct dvb_frontend_private
), GFP_KERNEL
);
2728 if (fe
->frontend_priv
== NULL
) {
2729 mutex_unlock(&frontend_mutex
);
2732 fepriv
= fe
->frontend_priv
;
2734 kref_init(&fe
->refcount
);
2737 * After initialization, there need to be two references: one
2738 * for dvb_unregister_frontend(), and another one for
2739 * dvb_frontend_detach().
2741 dvb_frontend_get(fe
);
2743 sema_init(&fepriv
->sem
, 1);
2744 init_waitqueue_head (&fepriv
->wait_queue
);
2745 init_waitqueue_head (&fepriv
->events
.wait_queue
);
2746 mutex_init(&fepriv
->events
.mtx
);
2748 fepriv
->inversion
= INVERSION_OFF
;
2750 dev_info(fe
->dvb
->device
,
2751 "DVB: registering adapter %i frontend %i (%s)...\n",
2752 fe
->dvb
->num
, fe
->id
, fe
->ops
.info
.name
);
2754 dvb_register_device (fe
->dvb
, &fepriv
->dvbdev
, &dvbdev_template
,
2755 fe
, DVB_DEVICE_FRONTEND
, 0);
2758 * Initialize the cache to the proper values according with the
2759 * first supported delivery system (ops->delsys[0])
2762 fe
->dtv_property_cache
.delivery_system
= fe
->ops
.delsys
[0];
2763 dvb_frontend_clear_cache(fe
);
2765 mutex_unlock(&frontend_mutex
);
2768 EXPORT_SYMBOL(dvb_register_frontend
);
2770 int dvb_unregister_frontend(struct dvb_frontend
* fe
)
2772 struct dvb_frontend_private
*fepriv
= fe
->frontend_priv
;
2773 dev_dbg(fe
->dvb
->device
, "%s:\n", __func__
);
2775 mutex_lock(&frontend_mutex
);
2776 dvb_frontend_stop(fe
);
2777 dvb_remove_device(fepriv
->dvbdev
);
2779 /* fe is invalid now */
2780 mutex_unlock(&frontend_mutex
);
2781 dvb_frontend_put(fe
);
2784 EXPORT_SYMBOL(dvb_unregister_frontend
);
2786 static void dvb_frontend_invoke_release(struct dvb_frontend
*fe
,
2787 void (*release
)(struct dvb_frontend
*fe
))
2791 #ifdef CONFIG_MEDIA_ATTACH
2792 dvb_detach(release
);
2797 void dvb_frontend_detach(struct dvb_frontend
* fe
)
2799 dvb_frontend_invoke_release(fe
, fe
->ops
.release_sec
);
2800 dvb_frontend_invoke_release(fe
, fe
->ops
.tuner_ops
.release
);
2801 dvb_frontend_invoke_release(fe
, fe
->ops
.analog_ops
.release
);
2802 dvb_frontend_invoke_release(fe
, fe
->ops
.detach
);
2803 dvb_frontend_put(fe
);
2805 EXPORT_SYMBOL(dvb_frontend_detach
);