1 /* 1
2 * dvb_frontend.h
3 *
4 * The Digital TV Frontend kABI defines a driv
5 * registering low-level, hardware specific dr
6 * frontend layer.
7 *
8 * Copyright (C) 2001 convergence integrated m
9 * Copyright (C) 2004 convergence GmbH
10 *
11 * Written by Ralph Metzler
12 * Overhauled by Holger Waechtler
13 * Kernel I2C stuff by Michael Hunold <hunold@
14 *
15 * This program is free software; you can redi
16 * modify it under the terms of the GNU Lesser
17 * as published by the Free Software Foundatio
18 * of the License, or (at your option) any lat
19 *
20 * This program is distributed in the hope tha
21 * but WITHOUT ANY WARRANTY; without even the
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR
23 * GNU General Public License for more details
24 *
25
26 * You should have received a copy of the GNU
27 * along with this program; if not, write to t
28 * Foundation, Inc., 59 Temple Place - Suite 3
29 *
30 */
31
32 #ifndef _DVB_FRONTEND_H_
33 #define _DVB_FRONTEND_H_
34
35 #include <linux/types.h>
36 #include <linux/sched.h>
37 #include <linux/ioctl.h>
38 #include <linux/i2c.h>
39 #include <linux/module.h>
40 #include <linux/errno.h>
41 #include <linux/delay.h>
42 #include <linux/mutex.h>
43 #include <linux/slab.h>
44 #include <linux/bitops.h>
45
46 #include <linux/dvb/frontend.h>
47
48 #include <media/dvbdev.h>
49
50 /*
51 * Maximum number of Delivery systems per fron
52 * should be smaller or equal to 32
53 */
54 #define MAX_DELSYS 8
55
56 /* Helper definitions to be used at frontend d
57 #define kHz 1000UL
58 #define MHz 1000000UL
59
60 /**
61 * struct dvb_frontend_tune_settings - paramet
62 *
63 * @min_delay_ms: minimum delay for tuni
64 * @step_size: step size between two
65 * @max_drift: maximum drift
66 *
67 * NOTE: step_size is in Hz, for terrestrial/c
68 */
69 struct dvb_frontend_tune_settings {
70 int min_delay_ms;
71 int step_size;
72 int max_drift;
73 };
74
75 struct dvb_frontend;
76
77 /**
78 * struct dvb_tuner_info - Frontend name and m
79 *
80 * @name: name of the Frontend
81 * @frequency_min_hz: minimal frequency supp
82 * @frequency_max_hz: maximum frequency supp
83 * @frequency_step_hz: frequency step in Hz
84 * @bandwidth_min: minimal frontend bandw
85 * @bandwidth_max: maximum frontend bandw
86 * @bandwidth_step: frontend bandwidth ste
87 */
88 struct dvb_tuner_info {
89 char name[128];
90
91 u32 frequency_min_hz;
92 u32 frequency_max_hz;
93 u32 frequency_step_hz;
94
95 u32 bandwidth_min;
96 u32 bandwidth_max;
97 u32 bandwidth_step;
98 };
99
100 /**
101 * struct analog_parameters - Parameters to tu
102 *
103 * @frequency: Frequency used by analog TV tu
104 * for TV, or 62.5 Hz for radio)
105 * @mode: Tuner mode, as defined on enum
106 * @audmode: Audio mode as defined for the
107 * e. g. V4L2_TUNER_MODE_*
108 * @std: TV standard bitmap as defined
109 *
110 * Hybrid tuners should be supported by both V
111 * struct contains the data that are used by t
112 * dependencies from V4L2 headers, all enums h
113 */
114 struct analog_parameters {
115 unsigned int frequency;
116 unsigned int mode;
117 unsigned int audmode;
118 u64 std;
119 };
120
121 /**
122 * enum dvbfe_algo - defines the algorithm use
123 *
124 * @DVBFE_ALGO_HW: Hardware Algorithm -
125 * Devices that support this algorithm do
126 * and no software support is needed to h
127 * Requesting these devices to LOCK is th
128 * device is supposed to do everything in
129 *
130 * @DVBFE_ALGO_SW: Software Algorithm -
131 * These are dumb devices, that require softwa
132 *
133 * @DVBFE_ALGO_CUSTOM: Customizable Agorithm -
134 * Devices having this algorithm can be c
135 * algorithms in the frontend driver, rat
136 * software zig-zag. In this case the zig
137 * or it maybe completely done in hardwar
138 * this algorithm, in conjunction with th
139 * callbacks, utilizes the driver specifi
140 *
141 * @DVBFE_ALGO_RECOVERY: Recovery Algorithm -
142 * These devices have AUTO recovery capab
143 */
144 enum dvbfe_algo {
145 DVBFE_ALGO_HW = BIT(
146 DVBFE_ALGO_SW = BIT(
147 DVBFE_ALGO_CUSTOM = BIT(
148 DVBFE_ALGO_RECOVERY = BIT(
149 };
150
151 /**
152 * enum dvbfe_search - search callback possibl
153 *
154 * @DVBFE_ALGO_SEARCH_SUCCESS:
155 * The frontend search algorithm complete
156 *
157 * @DVBFE_ALGO_SEARCH_ASLEEP:
158 * The frontend search algorithm is sleep
159 *
160 * @DVBFE_ALGO_SEARCH_FAILED:
161 * The frontend search for a signal faile
162 *
163 * @DVBFE_ALGO_SEARCH_INVALID:
164 * The frontend search algorithm was prob
165 * parameters and the search is an invali
166 *
167 * @DVBFE_ALGO_SEARCH_ERROR:
168 * The frontend search algorithm failed d
169 *
170 * @DVBFE_ALGO_SEARCH_AGAIN:
171 * The frontend search algorithm was requ
172 */
173 enum dvbfe_search {
174 DVBFE_ALGO_SEARCH_SUCCESS = BIT(
175 DVBFE_ALGO_SEARCH_ASLEEP = BIT(
176 DVBFE_ALGO_SEARCH_FAILED = BIT(
177 DVBFE_ALGO_SEARCH_INVALID = BIT(
178 DVBFE_ALGO_SEARCH_AGAIN = BIT(
179 DVBFE_ALGO_SEARCH_ERROR = BIT(
180 };
181
182 /**
183 * struct dvb_tuner_ops - Tuner information an
184 *
185 * @info: embedded &struct dvb_t
186 * @release: callback function call
187 * drivers should free an
188 * @init: callback function used
189 * @sleep: callback function used
190 * @suspend: callback function used
191 * suspend.
192 * @resume: callback function used
193 * resuming from suspend.
194 * @set_params: callback function used
195 * into a digital TV chan
196 * are stored at &struct
197 * The tuner demod can ch
198 * the changes needed for
199 * update statistics. Thi
200 * the tuner parameters a
201 * drivers.
202 * @set_analog_params: callback function used
203 * channel on hybrid tune
204 * to the driver.
205 * @set_config: callback function used
206 * parameters.
207 * @get_frequency: get the actual tuned f
208 * @get_bandwidth: get the bandwidth used
209 * @get_if_frequency: get the Intermediate F
210 * should return 0.
211 * @get_status: returns the frontend l
212 * @get_rf_strength: returns the RF signal
213 * analog TV and radio. D
214 * via DVBv5 API (&struct
215 * @get_afc: Used only by analog TV
216 * drift due to AFC.
217 * @calc_regs: callback function used
218 * for simple tuners. Sh
219 * @set_frequency: Set a new frequency. S
220 * @set_bandwidth: Set a new frequency. S
221 *
222 * NOTE: frequencies used on @get_frequency an
223 * terrestrial/cable or kHz for satellite.
224 *
225 */
226 struct dvb_tuner_ops {
227
228 struct dvb_tuner_info info;
229
230 void (*release)(struct dvb_frontend *f
231 int (*init)(struct dvb_frontend *fe);
232 int (*sleep)(struct dvb_frontend *fe);
233 int (*suspend)(struct dvb_frontend *fe
234 int (*resume)(struct dvb_frontend *fe)
235
236 /* This is the recommended way to set
237 int (*set_params)(struct dvb_frontend
238 int (*set_analog_params)(struct dvb_fr
239
240 int (*set_config)(struct dvb_frontend
241
242 int (*get_frequency)(struct dvb_fronte
243 int (*get_bandwidth)(struct dvb_fronte
244 int (*get_if_frequency)(struct dvb_fro
245
246 #define TUNER_STATUS_LOCKED 1
247 #define TUNER_STATUS_STEREO 2
248 int (*get_status)(struct dvb_frontend
249 int (*get_rf_strength)(struct dvb_fron
250 int (*get_afc)(struct dvb_frontend *fe
251
252 /*
253 * This is support for demods like the
254 * buffer with what to write.
255 *
256 * Don't use on newer drivers.
257 */
258 int (*calc_regs)(struct dvb_frontend *
259
260 /*
261 * These are provided separately from
262 * facilitate silicon tuners which req
263 * controlling each parameter separate
264 *
265 * Don't use on newer drivers.
266 */
267 int (*set_frequency)(struct dvb_fronte
268 int (*set_bandwidth)(struct dvb_fronte
269 };
270
271 /**
272 * struct analog_demod_info - Information stru
273 *
274 * @name: Name of the analog TV demodula
275 */
276 struct analog_demod_info {
277 char *name;
278 };
279
280 /**
281 * struct analog_demod_ops - Demodulation inf
282 * analog TV and ra
283 *
284 * @info: pointer to struct anal
285 * @set_params: callback function used
286 * demodulator parameters
287 * radio channel. The pro
288 * &struct analog_params.
289 * @has_signal: returns 0xffff if has
290 * @get_afc: Used only by analog TV
291 * drift due to AFC.
292 * @tuner_status: callback function that
293 * %TUNER_STATUS_LOCKED a
294 * @standby: set the tuner to stand
295 * @release: callback function call
296 * drivers should free an
297 * @i2c_gate_ctrl: controls the I2C gate.
298 * mux support instead.
299 * @set_config: callback function used
300 * parameters.
301 */
302 struct analog_demod_ops {
303
304 struct analog_demod_info info;
305
306 void (*set_params)(struct dvb_frontend
307 struct analog_param
308 int (*has_signal)(struct dvb_frontend
309 int (*get_afc)(struct dvb_frontend *f
310 void (*tuner_status)(struct dvb_fronte
311 void (*standby)(struct dvb_frontend *f
312 void (*release)(struct dvb_frontend *f
313 int (*i2c_gate_ctrl)(struct dvb_front
314
315 /** This is to allow setting tuner-spe
316 int (*set_config)(struct dvb_frontend
317 };
318
319 struct dtv_frontend_properties;
320
321 /**
322 * struct dvb_frontend_internal_info - Fronten
323 *
324 * @name: Name of the fr
325 * @frequency_min_hz: Minimal freque
326 * @frequency_max_hz: Minimal freque
327 * @frequency_stepsize_hz: All frequencie
328 * @frequency_tolerance_hz: Frequency tole
329 * @symbol_rate_min: Minimal symbol
330 * (for Cable/Sat
331 * @symbol_rate_max: Maximal symbol
332 * (for Cable/Sat
333 * @symbol_rate_tolerance: Maximal symbol
334 * (for Cable/Sat
335 * @caps: Capabilities s
336 * as specified i
337 */
338 struct dvb_frontend_internal_info {
339 char name[128];
340 u32 frequency_min_hz;
341 u32 frequency_max_hz;
342 u32 frequency_stepsize_hz;
343 u32 frequency_tolerance_hz;
344 u32 symbol_rate_min;
345 u32 symbol_rate_max;
346 u32 symbol_rate_tolerance;
347 enum fe_caps caps;
348 };
349
350 /**
351 * struct dvb_frontend_ops - Demodulation info
352 * ditialt TV
353 *
354 * @info: embedded &struct dvb_t
355 * @delsys: Delivery systems suppo
356 * @detach: callback function call
357 * drivers should clean u
358 * dvb_frontend allocatio
359 * @release: callback function call
360 * freed.
361 * drivers should free an
362 * @release_sec: callback function requ
363 * Control (SEC) driver t
364 * allocated by the drive
365 * @init: callback function used
366 * @sleep: callback function used
367 * @suspend: callback function used
368 * suspend.
369 * @resume: callback function used
370 * resuming from suspend.
371 * @write: callback function used
372 * allow other drivers to
373 * Should not be used on
374 * @tune: callback function used
375 * @DVBFE_ALGO_HW to tune
376 * @get_frontend_algo: returns the desired ha
377 * @set_frontend: callback function used
378 * parameters for demodul
379 * The properties to be u
380 * dvb_frontend.dtv_prope
381 * the parameters to refl
382 * channel to be decoded,
383 * @get_tune_settings: callback function
384 * @get_frontend: callback function used
385 * actuall in use. The pr
386 * &struct dvb_frontend.d
387 * statistics. Please not
388 * an error code if the s
389 * because the demog is n
390 * @read_status: returns the locking st
391 * @read_ber: legacy callback functi
392 * Newer drivers should p
393 * e. g. @set_frontend;/@
394 * callback only if DVBv3
395 * @read_signal_strength: legacy callback func
396 * strength. Newer driver
397 * DVBv5 API, e. g. @set_
398 * implementing this call
399 * compatibility is wante
400 * @read_snr: legacy callback functi
401 * rate. Newer drivers sh
402 * DVBv5 API, e. g. @set_
403 * implementing this call
404 * compatibility is wante
405 * @read_ucblocks: legacy callback functi
406 * Blocks. Newer drivers
407 * DVBv5 API, e. g. @set_
408 * implementing this call
409 * compatibility is wante
410 * @diseqc_reset_overload: callback function t
411 * FE_DISEQC_RESET_OVERLO
412 * @diseqc_send_master_cmd: callback function
413 * FE_DISEQC_SEND_MASTER_
414 * @diseqc_recv_slave_reply: callback function
415 * FE_DISEQC_RECV_SLAVE_R
416 * @diseqc_send_burst: callback function to i
417 * FE_DISEQC_SEND_BURST()
418 * @set_tone: callback function to i
419 * FE_SET_TONE() ioctl (o
420 * @set_voltage: callback function to i
421 * FE_SET_VOLTAGE() ioctl
422 * @enable_high_lnb_voltage: callback function
423 * FE_ENABLE_HIGH_LNB_VOL
424 * @dishnetwork_send_legacy_command: callback
425 * FE_DISHNETWORK_SEND_LE
426 * Drivers should not use
427 * core emulation fails t
428 * if @set_voltage takes
429 * when backward compatib
430 * required.
431 * @i2c_gate_ctrl: controls the I2C gate.
432 * mux support instead.
433 * @ts_bus_ctrl: callback function used
434 * @set_lna: callback function to p
435 * @search: callback function used
436 * @tuner_ops: pointer to &struct dvb
437 * @analog_ops: pointer to &struct ana
438 */
439 struct dvb_frontend_ops {
440 struct dvb_frontend_internal_info info
441
442 u8 delsys[MAX_DELSYS];
443
444 void (*detach)(struct dvb_frontend *fe
445 void (*release)(struct dvb_frontend* f
446 void (*release_sec)(struct dvb_fronten
447
448 int (*init)(struct dvb_frontend* fe);
449 int (*sleep)(struct dvb_frontend* fe);
450 int (*suspend)(struct dvb_frontend *fe
451 int (*resume)(struct dvb_frontend *fe)
452
453 int (*write)(struct dvb_frontend* fe,
454
455 /* if this is set, it overrides the de
456 int (*tune)(struct dvb_frontend* fe,
457 bool re_tune,
458 unsigned int mode_flags,
459 unsigned int *delay,
460 enum fe_status *status);
461
462 /* get frontend tuning algorithm from
463 enum dvbfe_algo (*get_frontend_algo)(s
464
465 /* these two are only used for the swz
466 int (*set_frontend)(struct dvb_fronten
467 int (*get_tune_settings)(struct dvb_fr
468
469 int (*get_frontend)(struct dvb_fronten
470 struct dtv_fronten
471
472 int (*read_status)(struct dvb_frontend
473 int (*read_ber)(struct dvb_frontend* f
474 int (*read_signal_strength)(struct dvb
475 int (*read_snr)(struct dvb_frontend* f
476 int (*read_ucblocks)(struct dvb_fronte
477
478 int (*diseqc_reset_overload)(struct dv
479 int (*diseqc_send_master_cmd)(struct d
480 int (*diseqc_recv_slave_reply)(struct
481 int (*diseqc_send_burst)(struct dvb_fr
482 enum fe_sec_m
483 int (*set_tone)(struct dvb_frontend *f
484 int (*set_voltage)(struct dvb_frontend
485 enum fe_sec_voltage
486 int (*enable_high_lnb_voltage)(struct
487 int (*dishnetwork_send_legacy_command)
488 int (*i2c_gate_ctrl)(struct dvb_fronte
489 int (*ts_bus_ctrl)(struct dvb_frontend
490 int (*set_lna)(struct dvb_frontend *);
491
492 /*
493 * These callbacks are for devices tha
494 * tuning algorithms, rather than a si
495 */
496 enum dvbfe_search (*search)(struct dvb
497
498 struct dvb_tuner_ops tuner_ops;
499 struct analog_demod_ops analog_ops;
500 };
501
502 #ifdef __DVB_CORE__
503 #define MAX_EVENT 8
504
505 /* Used only internally at dvb_frontend.c */
506 struct dvb_fe_events {
507 struct dvb_frontend_event events[MAX_E
508 int eventw;
509 int eventr;
510 int overflow;
511 wait_queue_head_t wait_queue;
512 struct mutex mtx;
513 };
514 #endif
515
516 /**
517 * struct dtv_frontend_properties - contains a
518 * specific t
519 *
520 * @frequency: frequency in Hz for te
521 * Satellite
522 * @modulation: Frontend modulation ty
523 * @voltage: SEC voltage (only Sate
524 * @sectone: SEC tone mode (only Sa
525 * @inversion: Spectral inversion
526 * @fec_inner: Forward error correcti
527 * @transmission_mode: Transmission Mode
528 * @bandwidth_hz: Bandwidth, in Hz. A ze
529 * wants to autodetect.
530 * @guard_interval: Guard Interval
531 * @hierarchy: Hierarchy
532 * @symbol_rate: Symbol Rate
533 * @code_rate_HP: high priority stream c
534 * @code_rate_LP: low priority stream co
535 * @pilot: Enable/disable/autodet
536 * @rolloff: Rolloff factor (alpha)
537 * @delivery_system: FE delivery system (e.
538 * @interleaving: interleaving
539 * @isdbt_partial_reception: ISDB-T partial re
540 * @isdbt_sb_mode: ISDB-T Sound Broadcast
541 * @isdbt_sb_subchannel: ISDB-T SB subc
542 * @isdbt_sb_segment_idx: ISDB-T SB segm
543 * @isdbt_sb_segment_count: ISDB-T SB segm
544 * @isdbt_layer_enabled: ISDB Layer ena
545 * @layer: ISDB per-layer data (o
546 * @layer.segment_count: Segment Count;
547 * @layer.fec: per layer code rate;
548 * @layer.modulation: per layer modulation;
549 * @layer.interleaving: per layer interleavin
550 * @stream_id: If different than zero
551 * hardware supports (DVB
552 * @scrambling_sequence_index: Carries the in
553 * scrambling seq
554 * @atscmh_fic_ver: Version number of the
555 * signaling data (only A
556 * @atscmh_parade_id: Parade identification
557 * @atscmh_nog: Number of MH groups pe
558 * parade (only ATSC-M/H)
559 * @atscmh_tnog: Total number of MH gro
560 * belonging to all MH pa
561 * (only ATSC-M/H)
562 * @atscmh_sgn: Start group number (on
563 * @atscmh_prc: Parade repetition cycl
564 * @atscmh_rs_frame_mode: Reed Solomon (
565 * @atscmh_rs_frame_ensemble: RS frame ensem
566 * @atscmh_rs_code_mode_pri: RS code mode p
567 * @atscmh_rs_code_mode_sec: RS code mode s
568 * @atscmh_sccc_block_mode: Series Concate
569 * Block Mode (on
570 * @atscmh_sccc_code_mode_a: SCCC code mode
571 * @atscmh_sccc_code_mode_b: SCCC code mode
572 * @atscmh_sccc_code_mode_c: SCCC code mode
573 * @atscmh_sccc_code_mode_d: SCCC code mode
574 * @lna: Power ON/OFF/AUTO the
575 * @strength: DVBv5 API statistics:
576 * @cnr: DVBv5 API statistics:
577 * (main) carrier
578 * @pre_bit_error: DVBv5 API statistics:
579 * @pre_bit_count: DVBv5 API statistics:
580 * @post_bit_error: DVBv5 API statistics:
581 * @post_bit_count: DVBv5 API statistics:
582 * @block_error: DVBv5 API statistics:
583 * @block_count: DVBv5 API statistics:
584 *
585 * NOTE: derivated statistics like Uncorrected
586 * calculated on userspace.
587 *
588 * Only a subset of the properties are needed
589 * For more info, consult the media_api.html w
590 * Userspace API.
591 */
592 struct dtv_frontend_properties {
593 u32 frequency;
594 enum fe_modulation modulation;
595
596 enum fe_sec_voltage voltage;
597 enum fe_sec_tone_mode sectone;
598 enum fe_spectral_inversion inversion;
599 enum fe_code_rate fec_inner;
600 enum fe_transmit_mode transmission_m
601 u32 bandwidth_hz;
602 enum fe_guard_interval guard_interval
603 enum fe_hierarchy hierarchy;
604 u32 symbol_rate;
605 enum fe_code_rate code_rate_HP;
606 enum fe_code_rate code_rate_LP;
607
608 enum fe_pilot pilot;
609 enum fe_rolloff rolloff;
610
611 enum fe_delivery_system delivery_syste
612
613 enum fe_interleaving interleaving;
614
615 /* ISDB-T specifics */
616 u8 isdbt_partial_
617 u8 isdbt_sb_mode;
618 u8 isdbt_sb_subch
619 u32 isdbt_sb_segme
620 u32 isdbt_sb_segme
621 u8 isdbt_layer_en
622 struct {
623 u8 segment_count;
624 enum fe_code_rate fec;
625 enum fe_modulation modulation;
626 u8 interleaving;
627 } layer[3];
628
629 /* Multistream specifics */
630 u32 stream_id;
631
632 /* Physical Layer Scrambling specifics
633 u32 scrambling_seq
634
635 /* ATSC-MH specifics */
636 u8 atscmh_fic_ver
637 u8 atscmh_parade_
638 u8 atscmh_nog;
639 u8 atscmh_tnog;
640 u8 atscmh_sgn;
641 u8 atscmh_prc;
642
643 u8 atscmh_rs_fram
644 u8 atscmh_rs_fram
645 u8 atscmh_rs_code
646 u8 atscmh_rs_code
647 u8 atscmh_sccc_bl
648 u8 atscmh_sccc_co
649 u8 atscmh_sccc_co
650 u8 atscmh_sccc_co
651 u8 atscmh_sccc_co
652
653 u32 lna;
654
655 /* statistics data */
656 struct dtv_fe_stats strength;
657 struct dtv_fe_stats cnr;
658 struct dtv_fe_stats pre_bit_error;
659 struct dtv_fe_stats pre_bit_count;
660 struct dtv_fe_stats post_bit_error
661 struct dtv_fe_stats post_bit_count
662 struct dtv_fe_stats block_error;
663 struct dtv_fe_stats block_count;
664 };
665
666 #define DVB_FE_NO_EXIT 0
667 #define DVB_FE_NORMAL_EXIT 1
668 #define DVB_FE_DEVICE_REMOVED 2
669 #define DVB_FE_DEVICE_RESUME 3
670
671 /**
672 * struct dvb_frontend - Frontend structure to
673 *
674 * @refcount: refcount to keep track
675 * references
676 * @ops: embedded &struct dvb_f
677 * @dvb: pointer to &struct dvb
678 * @demodulator_priv: demod private data
679 * @tuner_priv: tuner private data
680 * @frontend_priv: frontend private data
681 * @sec_priv: SEC private data
682 * @analog_demod_priv: Analog demod private d
683 * @dtv_property_cache: embedded &struct dtv_f
684 * @callback: callback function used
685 * either the tuner or th
686 * @id: Frontend ID
687 * @exit: Used to inform the DVB
688 * thread should exit (us
689 * got disconnected.
690 */
691
692 struct dvb_frontend {
693 struct kref refcount;
694 struct dvb_frontend_ops ops;
695 struct dvb_adapter *dvb;
696 void *demodulator_priv;
697 void *tuner_priv;
698 void *frontend_priv;
699 void *sec_priv;
700 void *analog_demod_priv;
701 struct dtv_frontend_properties dtv_pro
702 #define DVB_FRONTEND_COMPONENT_TUNER 0
703 #define DVB_FRONTEND_COMPONENT_DEMOD 1
704 int (*callback)(void *adapter_priv, in
705 int id;
706 unsigned int exit;
707 };
708
709 /**
710 * dvb_register_frontend() - Registers a DVB f
711 *
712 * @dvb: pointer to &struct dvb_adapter
713 * @fe: pointer to &struct dvb_frontend
714 *
715 * Allocate and initialize the private data ne
716 * manage the frontend and calls dvb_register_
717 * frontend. It also cleans the property cache
718 * parameters and selects the first available
719 */
720 int dvb_register_frontend(struct dvb_adapter *
721 struct dvb_fr
722
723 /**
724 * dvb_unregister_frontend() - Unregisters a D
725 *
726 * @fe: pointer to &struct dvb_frontend
727 *
728 * Stops the frontend kthread, calls dvb_unreg
729 * private frontend data allocated by dvb_regi
730 *
731 * NOTE: This function doesn't frees the memor
732 * by the SEC driver and by the tuner. In orde
733 * dvb_frontend_detach() is needed, after call
734 */
735 int dvb_unregister_frontend(struct dvb_fronten
736
737 /**
738 * dvb_frontend_detach() - Detaches and frees
739 *
740 * @fe: pointer to &struct dvb_frontend
741 *
742 * This function should be called after dvb_un
743 * calls the SEC, tuner and demod release func
744 * &dvb_frontend_ops.release_sec, &dvb_fronten
745 * &dvb_frontend_ops.analog_ops.release and &d
746 *
747 * If the driver is compiled with %CONFIG_MEDI
748 * the module reference count, needed to allow
749 * previously used DVB frontend modules.
750 */
751 void dvb_frontend_detach(struct dvb_frontend *
752
753 /**
754 * dvb_frontend_suspend() - Suspends a Digital
755 *
756 * @fe: pointer to &struct dvb_frontend
757 *
758 * This function prepares a Digital TV fronten
759 *
760 * In order to prepare the tuner to suspend, i
761 * &dvb_frontend_ops.tuner_ops.suspend\(\) is
762 * it will call &dvb_frontend_ops.tuner_ops.sl
763 *
764 * It will also call &dvb_frontend_ops.suspend
765 * if available. Otherwise it will call &dvb_f
766 *
767 * The drivers should also call dvb_frontend_s
768 * handler for the &device_driver.suspend\(\).
769 */
770 int dvb_frontend_suspend(struct dvb_frontend *
771
772 /**
773 * dvb_frontend_resume() - Resumes a Digital T
774 *
775 * @fe: pointer to &struct dvb_frontend
776 *
777 * This function resumes the usual operation o
778 *
779 * In order to resume the frontend, it calls t
780 * &dvb_frontend_ops.resume\(\) if available.
781 * &dvb_frontend_ops.init\(\).
782 *
783 * If &dvb_frontend_ops.tuner_ops.resume\(\) i
784 * Otherwise,t will call &dvb_frontend_ops.tun
785 *
786 * Once tuner and demods are resumed, it will
787 * tone are restored to their previous values
788 * kthread in order to retune the frontend.
789 *
790 * The drivers should also call dvb_frontend_r
791 * handler for the &device_driver.resume\(\).
792 */
793 int dvb_frontend_resume(struct dvb_frontend *f
794
795 /**
796 * dvb_frontend_reinitialise() - forces a rein
797 *
798 * @fe: pointer to &struct dvb_frontend
799 *
800 * Calls &dvb_frontend_ops.init\(\) and &dvb_f
801 * and resets SEC tone and voltage (for Satell
802 *
803 * NOTE: Currently, this function is used only
804 * It seems to be due to address some special
805 * frontend.
806 */
807 void dvb_frontend_reinitialise(struct dvb_fron
808
809 /**
810 * dvb_frontend_sleep_until() - Sleep for the
811 * add_usec parameter
812 *
813 * @waketime: pointer to &struct ktime_t
814 * @add_usec: time to sleep, in microseconds
815 *
816 * This function is used to measure the time r
817 * FE_DISHNETWORK_SEND_LEGACY_CMD() ioctl to w
818 * as possible, as it affects the detection of
819 * satellite subsystem.
820 *
821 * Its used internally by the DVB frontend cor
822 * FE_DISHNETWORK_SEND_LEGACY_CMD() using the
823 * callback.
824 *
825 * NOTE: it should not be used at the drivers,
826 * legacy callback is provided by the Kernel.
827 * should be at the drivers is when there are
828 * would prevent the core emulation to work. O
829 * be writing a &dvb_frontend_ops.dishnetwork_
830 * calling this function directly.
831 */
832 void dvb_frontend_sleep_until(ktime_t *waketim
833
834 #endif
835
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