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1da177e4 LT |
1 | /* |
2 | * dvb_frontend.c: DVB frontend tuning interface/thread | |
3 | * | |
4 | * | |
5 | * Copyright (C) 1999-2001 Ralph Metzler | |
6 | * Marcus Metzler | |
7 | * Holger Waechtler | |
8 | * for convergence integrated media GmbH | |
9 | * | |
10 | * Copyright (C) 2004 Andrew de Quincey (tuning thread cleanup) | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License | |
14 | * as published by the Free Software Foundation; either version 2 | |
15 | * of the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | * Or, point your browser to http://www.gnu.org/copyleft/gpl.html | |
26 | */ | |
27 | ||
28 | #include <linux/string.h> | |
29 | #include <linux/kernel.h> | |
30 | #include <linux/sched.h> | |
31 | #include <linux/wait.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/poll.h> | |
34 | #include <linux/module.h> | |
1da177e4 | 35 | #include <linux/list.h> |
7dfb7103 | 36 | #include <linux/freezer.h> |
cc89c229 | 37 | #include <linux/jiffies.h> |
8eec1429 | 38 | #include <linux/kthread.h> |
1da177e4 | 39 | #include <asm/processor.h> |
1da177e4 LT |
40 | |
41 | #include "dvb_frontend.h" | |
42 | #include "dvbdev.h" | |
43 | ||
44 | static int dvb_frontend_debug; | |
849be2cd | 45 | static int dvb_shutdown_timeout; |
1da177e4 LT |
46 | static int dvb_force_auto_inversion; |
47 | static int dvb_override_tune_delay; | |
48 | static int dvb_powerdown_on_sleep = 1; | |
49 | ||
50 | module_param_named(frontend_debug, dvb_frontend_debug, int, 0644); | |
f4f009a7 | 51 | MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off)."); |
6baad3f0 | 52 | module_param(dvb_shutdown_timeout, int, 0644); |
1da177e4 | 53 | MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware"); |
6baad3f0 | 54 | module_param(dvb_force_auto_inversion, int, 0644); |
1da177e4 | 55 | MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always"); |
6baad3f0 | 56 | module_param(dvb_override_tune_delay, int, 0644); |
1da177e4 | 57 | MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt"); |
6baad3f0 | 58 | module_param(dvb_powerdown_on_sleep, int, 0644); |
a8558577 | 59 | MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)"); |
1da177e4 LT |
60 | |
61 | #define dprintk if (dvb_frontend_debug) printk | |
62 | ||
63 | #define FESTATE_IDLE 1 | |
64 | #define FESTATE_RETUNE 2 | |
65 | #define FESTATE_TUNING_FAST 4 | |
66 | #define FESTATE_TUNING_SLOW 8 | |
67 | #define FESTATE_TUNED 16 | |
68 | #define FESTATE_ZIGZAG_FAST 32 | |
69 | #define FESTATE_ZIGZAG_SLOW 64 | |
70 | #define FESTATE_DISEQC 128 | |
71 | #define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC) | |
72 | #define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST) | |
73 | #define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW) | |
74 | #define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW) | |
0249ef16 MA |
75 | |
76 | #define FE_ALGO_HW 1 | |
1da177e4 LT |
77 | /* |
78 | * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling. | |
79 | * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune. | |
80 | * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress. | |
81 | * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower. | |
82 | * FESTATE_TUNED. The frontend has successfully locked on. | |
83 | * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it. | |
84 | * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower. | |
85 | * FESTATE_DISEQC. A DISEQC command has just been issued. | |
86 | * FESTATE_WAITFORLOCK. When we're waiting for a lock. | |
87 | * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan. | |
88 | * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan. | |
89 | * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again. | |
90 | */ | |
91 | ||
3593cab5 | 92 | static DEFINE_MUTEX(frontend_mutex); |
1da177e4 LT |
93 | |
94 | struct dvb_frontend_private { | |
95 | ||
36cb557a | 96 | /* thread/frontend values */ |
1da177e4 LT |
97 | struct dvb_device *dvbdev; |
98 | struct dvb_frontend_parameters parameters; | |
99 | struct dvb_fe_events events; | |
100 | struct semaphore sem; | |
101 | struct list_head list_head; | |
102 | wait_queue_head_t wait_queue; | |
8eec1429 | 103 | struct task_struct *thread; |
1da177e4 | 104 | unsigned long release_jiffies; |
36cb557a AQ |
105 | unsigned int exit; |
106 | unsigned int wakeup; | |
1da177e4 | 107 | fe_status_t status; |
400b7083 | 108 | unsigned long tune_mode_flags; |
36cb557a | 109 | unsigned int delay; |
86f40cc3 | 110 | unsigned int reinitialise; |
64454016 AQ |
111 | int tone; |
112 | int voltage; | |
36cb557a AQ |
113 | |
114 | /* swzigzag values */ | |
115 | unsigned int state; | |
116 | unsigned int bending; | |
117 | int lnb_drift; | |
118 | unsigned int inversion; | |
119 | unsigned int auto_step; | |
120 | unsigned int auto_sub_step; | |
121 | unsigned int started_auto_step; | |
122 | unsigned int min_delay; | |
123 | unsigned int max_drift; | |
124 | unsigned int step_size; | |
125 | int quality; | |
126 | unsigned int check_wrapped; | |
1da177e4 LT |
127 | }; |
128 | ||
86f40cc3 | 129 | static void dvb_frontend_wakeup(struct dvb_frontend *fe); |
1da177e4 LT |
130 | |
131 | static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status) | |
132 | { | |
0c53c70f | 133 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
134 | struct dvb_fe_events *events = &fepriv->events; |
135 | struct dvb_frontend_event *e; | |
136 | int wp; | |
137 | ||
46b4f7c1 | 138 | dprintk ("%s\n", __func__); |
1da177e4 | 139 | |
03b76123 | 140 | if (mutex_lock_interruptible (&events->mtx)) |
1da177e4 LT |
141 | return; |
142 | ||
143 | wp = (events->eventw + 1) % MAX_EVENT; | |
144 | ||
145 | if (wp == events->eventr) { | |
146 | events->overflow = 1; | |
147 | events->eventr = (events->eventr + 1) % MAX_EVENT; | |
148 | } | |
149 | ||
150 | e = &events->events[events->eventw]; | |
151 | ||
152 | memcpy (&e->parameters, &fepriv->parameters, | |
153 | sizeof (struct dvb_frontend_parameters)); | |
154 | ||
155 | if (status & FE_HAS_LOCK) | |
dea74869 PB |
156 | if (fe->ops.get_frontend) |
157 | fe->ops.get_frontend(fe, &e->parameters); | |
1da177e4 LT |
158 | |
159 | events->eventw = wp; | |
160 | ||
03b76123 | 161 | mutex_unlock(&events->mtx); |
1da177e4 LT |
162 | |
163 | e->status = status; | |
164 | ||
165 | wake_up_interruptible (&events->wait_queue); | |
166 | } | |
167 | ||
168 | static int dvb_frontend_get_event(struct dvb_frontend *fe, | |
169 | struct dvb_frontend_event *event, int flags) | |
170 | { | |
0c53c70f | 171 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
172 | struct dvb_fe_events *events = &fepriv->events; |
173 | ||
46b4f7c1 | 174 | dprintk ("%s\n", __func__); |
1da177e4 LT |
175 | |
176 | if (events->overflow) { | |
177 | events->overflow = 0; | |
178 | return -EOVERFLOW; | |
179 | } | |
180 | ||
181 | if (events->eventw == events->eventr) { | |
182 | int ret; | |
183 | ||
184 | if (flags & O_NONBLOCK) | |
185 | return -EWOULDBLOCK; | |
186 | ||
187 | up(&fepriv->sem); | |
188 | ||
189 | ret = wait_event_interruptible (events->wait_queue, | |
190 | events->eventw != events->eventr); | |
191 | ||
192 | if (down_interruptible (&fepriv->sem)) | |
193 | return -ERESTARTSYS; | |
194 | ||
195 | if (ret < 0) | |
196 | return ret; | |
197 | } | |
198 | ||
03b76123 | 199 | if (mutex_lock_interruptible (&events->mtx)) |
1da177e4 LT |
200 | return -ERESTARTSYS; |
201 | ||
202 | memcpy (event, &events->events[events->eventr], | |
203 | sizeof(struct dvb_frontend_event)); | |
204 | ||
205 | events->eventr = (events->eventr + 1) % MAX_EVENT; | |
206 | ||
03b76123 | 207 | mutex_unlock(&events->mtx); |
1da177e4 LT |
208 | |
209 | return 0; | |
210 | } | |
211 | ||
212 | static void dvb_frontend_init(struct dvb_frontend *fe) | |
213 | { | |
214 | dprintk ("DVB: initialising frontend %i (%s)...\n", | |
215 | fe->dvb->num, | |
dea74869 PB |
216 | fe->ops.info.name); |
217 | ||
218 | if (fe->ops.init) | |
219 | fe->ops.init(fe); | |
220 | if (fe->ops.tuner_ops.init) { | |
221 | fe->ops.tuner_ops.init(fe); | |
222 | if (fe->ops.i2c_gate_ctrl) | |
223 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7eef5dd6 | 224 | } |
1da177e4 LT |
225 | } |
226 | ||
86f40cc3 AQ |
227 | void dvb_frontend_reinitialise(struct dvb_frontend *fe) |
228 | { | |
229 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
230 | ||
231 | fepriv->reinitialise = 1; | |
232 | dvb_frontend_wakeup(fe); | |
233 | } | |
234 | EXPORT_SYMBOL(dvb_frontend_reinitialise); | |
235 | ||
36cb557a | 236 | static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked) |
1da177e4 | 237 | { |
36cb557a | 238 | int q2; |
1da177e4 | 239 | |
46b4f7c1 | 240 | dprintk ("%s\n", __func__); |
1da177e4 | 241 | |
36cb557a AQ |
242 | if (locked) |
243 | (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256; | |
244 | else | |
245 | (fepriv->quality) = (fepriv->quality * 220 + 0) / 256; | |
1da177e4 | 246 | |
36cb557a AQ |
247 | q2 = fepriv->quality - 128; |
248 | q2 *= q2; | |
1da177e4 | 249 | |
36cb557a | 250 | fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128); |
1da177e4 LT |
251 | } |
252 | ||
253 | /** | |
254 | * Performs automatic twiddling of frontend parameters. | |
255 | * | |
256 | * @param fe The frontend concerned. | |
257 | * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT | |
258 | * @returns Number of complete iterations that have been performed. | |
259 | */ | |
36cb557a | 260 | static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped) |
1da177e4 LT |
261 | { |
262 | int autoinversion; | |
263 | int ready = 0; | |
0c53c70f | 264 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
265 | int original_inversion = fepriv->parameters.inversion; |
266 | u32 original_frequency = fepriv->parameters.frequency; | |
267 | ||
268 | /* are we using autoinversion? */ | |
dea74869 | 269 | autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) && |
1da177e4 LT |
270 | (fepriv->parameters.inversion == INVERSION_AUTO)); |
271 | ||
272 | /* setup parameters correctly */ | |
273 | while(!ready) { | |
274 | /* calculate the lnb_drift */ | |
275 | fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size; | |
276 | ||
277 | /* wrap the auto_step if we've exceeded the maximum drift */ | |
278 | if (fepriv->lnb_drift > fepriv->max_drift) { | |
279 | fepriv->auto_step = 0; | |
280 | fepriv->auto_sub_step = 0; | |
281 | fepriv->lnb_drift = 0; | |
282 | } | |
283 | ||
284 | /* perform inversion and +/- zigzag */ | |
285 | switch(fepriv->auto_sub_step) { | |
286 | case 0: | |
287 | /* try with the current inversion and current drift setting */ | |
288 | ready = 1; | |
289 | break; | |
290 | ||
291 | case 1: | |
292 | if (!autoinversion) break; | |
293 | ||
294 | fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF; | |
295 | ready = 1; | |
296 | break; | |
297 | ||
298 | case 2: | |
299 | if (fepriv->lnb_drift == 0) break; | |
300 | ||
301 | fepriv->lnb_drift = -fepriv->lnb_drift; | |
302 | ready = 1; | |
303 | break; | |
304 | ||
305 | case 3: | |
306 | if (fepriv->lnb_drift == 0) break; | |
307 | if (!autoinversion) break; | |
308 | ||
309 | fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF; | |
310 | fepriv->lnb_drift = -fepriv->lnb_drift; | |
311 | ready = 1; | |
312 | break; | |
313 | ||
314 | default: | |
315 | fepriv->auto_step++; | |
316 | fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */ | |
317 | break; | |
318 | } | |
319 | ||
320 | if (!ready) fepriv->auto_sub_step++; | |
321 | } | |
322 | ||
323 | /* if this attempt would hit where we started, indicate a complete | |
324 | * iteration has occurred */ | |
325 | if ((fepriv->auto_step == fepriv->started_auto_step) && | |
326 | (fepriv->auto_sub_step == 0) && check_wrapped) { | |
327 | return 1; | |
328 | } | |
329 | ||
330 | dprintk("%s: drift:%i inversion:%i auto_step:%i " | |
331 | "auto_sub_step:%i started_auto_step:%i\n", | |
46b4f7c1 | 332 | __func__, fepriv->lnb_drift, fepriv->inversion, |
1da177e4 LT |
333 | fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step); |
334 | ||
335 | /* set the frontend itself */ | |
336 | fepriv->parameters.frequency += fepriv->lnb_drift; | |
337 | if (autoinversion) | |
338 | fepriv->parameters.inversion = fepriv->inversion; | |
dea74869 PB |
339 | if (fe->ops.set_frontend) |
340 | fe->ops.set_frontend(fe, &fepriv->parameters); | |
1da177e4 LT |
341 | |
342 | fepriv->parameters.frequency = original_frequency; | |
343 | fepriv->parameters.inversion = original_inversion; | |
344 | ||
345 | fepriv->auto_sub_step++; | |
346 | return 0; | |
347 | } | |
348 | ||
36cb557a AQ |
349 | static void dvb_frontend_swzigzag(struct dvb_frontend *fe) |
350 | { | |
30d9464c | 351 | fe_status_t s = 0; |
36cb557a AQ |
352 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
353 | ||
354 | /* if we've got no parameters, just keep idling */ | |
355 | if (fepriv->state & FESTATE_IDLE) { | |
356 | fepriv->delay = 3*HZ; | |
357 | fepriv->quality = 0; | |
358 | return; | |
359 | } | |
360 | ||
361 | /* in SCAN mode, we just set the frontend when asked and leave it alone */ | |
362 | if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) { | |
363 | if (fepriv->state & FESTATE_RETUNE) { | |
dea74869 PB |
364 | if (fe->ops.set_frontend) |
365 | fe->ops.set_frontend(fe, &fepriv->parameters); | |
36cb557a AQ |
366 | fepriv->state = FESTATE_TUNED; |
367 | } | |
368 | fepriv->delay = 3*HZ; | |
369 | fepriv->quality = 0; | |
370 | return; | |
371 | } | |
372 | ||
373 | /* get the frontend status */ | |
374 | if (fepriv->state & FESTATE_RETUNE) { | |
375 | s = 0; | |
376 | } else { | |
dea74869 PB |
377 | if (fe->ops.read_status) |
378 | fe->ops.read_status(fe, &s); | |
36cb557a AQ |
379 | if (s != fepriv->status) { |
380 | dvb_frontend_add_event(fe, s); | |
381 | fepriv->status = s; | |
382 | } | |
383 | } | |
384 | ||
385 | /* if we're not tuned, and we have a lock, move to the TUNED state */ | |
386 | if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) { | |
387 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
388 | fepriv->state = FESTATE_TUNED; | |
389 | ||
390 | /* if we're tuned, then we have determined the correct inversion */ | |
dea74869 | 391 | if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) && |
36cb557a AQ |
392 | (fepriv->parameters.inversion == INVERSION_AUTO)) { |
393 | fepriv->parameters.inversion = fepriv->inversion; | |
394 | } | |
395 | return; | |
396 | } | |
397 | ||
398 | /* if we are tuned already, check we're still locked */ | |
399 | if (fepriv->state & FESTATE_TUNED) { | |
400 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
401 | ||
402 | /* we're tuned, and the lock is still good... */ | |
403 | if (s & FE_HAS_LOCK) { | |
404 | return; | |
405 | } else { /* if we _WERE_ tuned, but now don't have a lock */ | |
406 | fepriv->state = FESTATE_ZIGZAG_FAST; | |
407 | fepriv->started_auto_step = fepriv->auto_step; | |
408 | fepriv->check_wrapped = 0; | |
409 | } | |
410 | } | |
411 | ||
412 | /* don't actually do anything if we're in the LOSTLOCK state, | |
413 | * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */ | |
414 | if ((fepriv->state & FESTATE_LOSTLOCK) && | |
dea74869 | 415 | (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) { |
36cb557a AQ |
416 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); |
417 | return; | |
418 | } | |
419 | ||
420 | /* don't do anything if we're in the DISEQC state, since this | |
421 | * might be someone with a motorized dish controlled by DISEQC. | |
422 | * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */ | |
423 | if (fepriv->state & FESTATE_DISEQC) { | |
424 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
425 | return; | |
426 | } | |
427 | ||
428 | /* if we're in the RETUNE state, set everything up for a brand | |
429 | * new scan, keeping the current inversion setting, as the next | |
430 | * tune is _very_ likely to require the same */ | |
431 | if (fepriv->state & FESTATE_RETUNE) { | |
432 | fepriv->lnb_drift = 0; | |
433 | fepriv->auto_step = 0; | |
434 | fepriv->auto_sub_step = 0; | |
435 | fepriv->started_auto_step = 0; | |
436 | fepriv->check_wrapped = 0; | |
437 | } | |
438 | ||
439 | /* fast zigzag. */ | |
440 | if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) { | |
441 | fepriv->delay = fepriv->min_delay; | |
442 | ||
443 | /* peform a tune */ | |
444 | if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) { | |
445 | /* OK, if we've run out of trials at the fast speed. | |
446 | * Drop back to slow for the _next_ attempt */ | |
447 | fepriv->state = FESTATE_SEARCHING_SLOW; | |
448 | fepriv->started_auto_step = fepriv->auto_step; | |
449 | return; | |
450 | } | |
451 | fepriv->check_wrapped = 1; | |
452 | ||
453 | /* if we've just retuned, enter the ZIGZAG_FAST state. | |
454 | * This ensures we cannot return from an | |
455 | * FE_SET_FRONTEND ioctl before the first frontend tune | |
456 | * occurs */ | |
457 | if (fepriv->state & FESTATE_RETUNE) { | |
458 | fepriv->state = FESTATE_TUNING_FAST; | |
459 | } | |
460 | } | |
461 | ||
462 | /* slow zigzag */ | |
463 | if (fepriv->state & FESTATE_SEARCHING_SLOW) { | |
464 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
465 | ||
466 | /* Note: don't bother checking for wrapping; we stay in this | |
467 | * state until we get a lock */ | |
468 | dvb_frontend_swzigzag_autotune(fe, 0); | |
469 | } | |
470 | } | |
471 | ||
1da177e4 LT |
472 | static int dvb_frontend_is_exiting(struct dvb_frontend *fe) |
473 | { | |
0c53c70f | 474 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
475 | |
476 | if (fepriv->exit) | |
477 | return 1; | |
478 | ||
479 | if (fepriv->dvbdev->writers == 1) | |
cc89c229 | 480 | if (time_after(jiffies, fepriv->release_jiffies + |
36cb557a | 481 | dvb_shutdown_timeout * HZ)) |
1da177e4 LT |
482 | return 1; |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | static int dvb_frontend_should_wakeup(struct dvb_frontend *fe) | |
488 | { | |
0c53c70f | 489 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
490 | |
491 | if (fepriv->wakeup) { | |
492 | fepriv->wakeup = 0; | |
493 | return 1; | |
494 | } | |
495 | return dvb_frontend_is_exiting(fe); | |
496 | } | |
497 | ||
498 | static void dvb_frontend_wakeup(struct dvb_frontend *fe) | |
499 | { | |
0c53c70f | 500 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
501 | |
502 | fepriv->wakeup = 1; | |
503 | wake_up_interruptible(&fepriv->wait_queue); | |
504 | } | |
505 | ||
1da177e4 LT |
506 | static int dvb_frontend_thread(void *data) |
507 | { | |
0c53c70f JS |
508 | struct dvb_frontend *fe = data; |
509 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
1da177e4 | 510 | unsigned long timeout; |
1da177e4 | 511 | fe_status_t s; |
36cb557a | 512 | struct dvb_frontend_parameters *params; |
1da177e4 | 513 | |
46b4f7c1 | 514 | dprintk("%s\n", __func__); |
1da177e4 | 515 | |
36cb557a AQ |
516 | fepriv->check_wrapped = 0; |
517 | fepriv->quality = 0; | |
518 | fepriv->delay = 3*HZ; | |
1da177e4 | 519 | fepriv->status = 0; |
1da177e4 | 520 | fepriv->wakeup = 0; |
04c56d0e AQ |
521 | fepriv->reinitialise = 0; |
522 | ||
523 | dvb_frontend_init(fe); | |
1da177e4 | 524 | |
83144186 | 525 | set_freezable(); |
1da177e4 LT |
526 | while (1) { |
527 | up(&fepriv->sem); /* is locked when we enter the thread... */ | |
6591691b | 528 | restart: |
1da177e4 | 529 | timeout = wait_event_interruptible_timeout(fepriv->wait_queue, |
e42837bc RW |
530 | dvb_frontend_should_wakeup(fe) || kthread_should_stop() |
531 | || freezing(current), | |
8eec1429 HP |
532 | fepriv->delay); |
533 | ||
534 | if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) { | |
1da177e4 LT |
535 | /* got signal or quitting */ |
536 | break; | |
537 | } | |
538 | ||
8eec1429 | 539 | if (try_to_freeze()) |
6591691b | 540 | goto restart; |
1da177e4 LT |
541 | |
542 | if (down_interruptible(&fepriv->sem)) | |
543 | break; | |
544 | ||
86f40cc3 AQ |
545 | if (fepriv->reinitialise) { |
546 | dvb_frontend_init(fe); | |
64454016 | 547 | if (fepriv->tone != -1) { |
dea74869 | 548 | fe->ops.set_tone(fe, fepriv->tone); |
64454016 AQ |
549 | } |
550 | if (fepriv->voltage != -1) { | |
dea74869 | 551 | fe->ops.set_voltage(fe, fepriv->voltage); |
64454016 | 552 | } |
86f40cc3 AQ |
553 | fepriv->reinitialise = 0; |
554 | } | |
555 | ||
36cb557a | 556 | /* do an iteration of the tuning loop */ |
d772bd03 MA |
557 | if (fe->ops.get_frontend_algo) { |
558 | if (fe->ops.get_frontend_algo(fe) == FE_ALGO_HW) { | |
559 | /* have we been asked to retune? */ | |
560 | params = NULL; | |
561 | if (fepriv->state & FESTATE_RETUNE) { | |
562 | params = &fepriv->parameters; | |
563 | fepriv->state = FESTATE_TUNED; | |
564 | } | |
565 | ||
566 | fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s); | |
567 | if (s != fepriv->status) { | |
568 | dvb_frontend_add_event(fe, s); | |
569 | fepriv->status = s; | |
570 | } | |
70d90635 MA |
571 | } else |
572 | dvb_frontend_swzigzag(fe); | |
4a4edcca MA |
573 | } else |
574 | dvb_frontend_swzigzag(fe); | |
1da177e4 LT |
575 | } |
576 | ||
608f62d6 OE |
577 | if (dvb_powerdown_on_sleep) { |
578 | if (fe->ops.set_voltage) | |
579 | fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF); | |
dea74869 PB |
580 | if (fe->ops.tuner_ops.sleep) { |
581 | fe->ops.tuner_ops.sleep(fe); | |
582 | if (fe->ops.i2c_gate_ctrl) | |
583 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7eef5dd6 | 584 | } |
dea74869 PB |
585 | if (fe->ops.sleep) |
586 | fe->ops.sleep(fe); | |
1da177e4 LT |
587 | } |
588 | ||
8eec1429 | 589 | fepriv->thread = NULL; |
1da177e4 LT |
590 | mb(); |
591 | ||
592 | dvb_frontend_wakeup(fe); | |
593 | return 0; | |
594 | } | |
595 | ||
596 | static void dvb_frontend_stop(struct dvb_frontend *fe) | |
597 | { | |
0c53c70f | 598 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 | 599 | |
46b4f7c1 | 600 | dprintk ("%s\n", __func__); |
1da177e4 LT |
601 | |
602 | fepriv->exit = 1; | |
603 | mb(); | |
604 | ||
8eec1429 | 605 | if (!fepriv->thread) |
1da177e4 LT |
606 | return; |
607 | ||
8eec1429 | 608 | kthread_stop(fepriv->thread); |
ca5be9cd | 609 | |
8eec1429 | 610 | init_MUTEX (&fepriv->sem); |
1da177e4 LT |
611 | fepriv->state = FESTATE_IDLE; |
612 | ||
613 | /* paranoia check in case a signal arrived */ | |
8eec1429 HP |
614 | if (fepriv->thread) |
615 | printk("dvb_frontend_stop: warning: thread %p won't exit\n", | |
616 | fepriv->thread); | |
1da177e4 LT |
617 | } |
618 | ||
83b75b04 N |
619 | s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime) |
620 | { | |
621 | return ((curtime.tv_usec < lasttime.tv_usec) ? | |
622 | 1000000 - lasttime.tv_usec + curtime.tv_usec : | |
623 | curtime.tv_usec - lasttime.tv_usec); | |
624 | } | |
625 | EXPORT_SYMBOL(timeval_usec_diff); | |
626 | ||
627 | static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec) | |
628 | { | |
629 | curtime->tv_usec += add_usec; | |
630 | if (curtime->tv_usec >= 1000000) { | |
631 | curtime->tv_usec -= 1000000; | |
632 | curtime->tv_sec++; | |
633 | } | |
634 | } | |
635 | ||
636 | /* | |
637 | * Sleep until gettimeofday() > waketime + add_usec | |
638 | * This needs to be as precise as possible, but as the delay is | |
639 | * usually between 2ms and 32ms, it is done using a scheduled msleep | |
640 | * followed by usleep (normally a busy-wait loop) for the remainder | |
641 | */ | |
642 | void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec) | |
643 | { | |
644 | struct timeval lasttime; | |
645 | s32 delta, newdelta; | |
646 | ||
647 | timeval_usec_add(waketime, add_usec); | |
648 | ||
649 | do_gettimeofday(&lasttime); | |
650 | delta = timeval_usec_diff(lasttime, *waketime); | |
651 | if (delta > 2500) { | |
652 | msleep((delta - 1500) / 1000); | |
653 | do_gettimeofday(&lasttime); | |
654 | newdelta = timeval_usec_diff(lasttime, *waketime); | |
655 | delta = (newdelta > delta) ? 0 : newdelta; | |
656 | } | |
657 | if (delta > 0) | |
658 | udelay(delta); | |
659 | } | |
660 | EXPORT_SYMBOL(dvb_frontend_sleep_until); | |
661 | ||
1da177e4 LT |
662 | static int dvb_frontend_start(struct dvb_frontend *fe) |
663 | { | |
664 | int ret; | |
0c53c70f | 665 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
8eec1429 | 666 | struct task_struct *fe_thread; |
1da177e4 | 667 | |
46b4f7c1 | 668 | dprintk ("%s\n", __func__); |
1da177e4 | 669 | |
8eec1429 | 670 | if (fepriv->thread) { |
1da177e4 LT |
671 | if (!fepriv->exit) |
672 | return 0; | |
673 | else | |
674 | dvb_frontend_stop (fe); | |
675 | } | |
676 | ||
677 | if (signal_pending(current)) | |
678 | return -EINTR; | |
679 | if (down_interruptible (&fepriv->sem)) | |
680 | return -EINTR; | |
681 | ||
682 | fepriv->state = FESTATE_IDLE; | |
683 | fepriv->exit = 0; | |
8eec1429 | 684 | fepriv->thread = NULL; |
1da177e4 LT |
685 | mb(); |
686 | ||
8eec1429 HP |
687 | fe_thread = kthread_run(dvb_frontend_thread, fe, |
688 | "kdvb-fe-%i", fe->dvb->num); | |
689 | if (IS_ERR(fe_thread)) { | |
690 | ret = PTR_ERR(fe_thread); | |
691 | printk("dvb_frontend_start: failed to start kthread (%d)\n", ret); | |
1da177e4 LT |
692 | up(&fepriv->sem); |
693 | return ret; | |
694 | } | |
8eec1429 | 695 | fepriv->thread = fe_thread; |
1da177e4 LT |
696 | return 0; |
697 | } | |
698 | ||
c471b331 OE |
699 | static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe, |
700 | u32 *freq_min, u32 *freq_max) | |
701 | { | |
702 | *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min); | |
703 | ||
704 | if (fe->ops.info.frequency_max == 0) | |
705 | *freq_max = fe->ops.tuner_ops.info.frequency_max; | |
706 | else if (fe->ops.tuner_ops.info.frequency_max == 0) | |
707 | *freq_max = fe->ops.info.frequency_max; | |
708 | else | |
709 | *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max); | |
710 | ||
711 | if (*freq_min == 0 || *freq_max == 0) | |
712 | printk(KERN_WARNING "DVB: frontend %u frequency limits undefined - fix the driver\n", | |
713 | fe->dvb->num); | |
714 | } | |
715 | ||
1fab46f0 OE |
716 | static int dvb_frontend_check_parameters(struct dvb_frontend *fe, |
717 | struct dvb_frontend_parameters *parms) | |
718 | { | |
c471b331 OE |
719 | u32 freq_min; |
720 | u32 freq_max; | |
721 | ||
1fab46f0 | 722 | /* range check: frequency */ |
c471b331 OE |
723 | dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max); |
724 | if ((freq_min && parms->frequency < freq_min) || | |
725 | (freq_max && parms->frequency > freq_max)) { | |
1fab46f0 | 726 | printk(KERN_WARNING "DVB: frontend %u frequency %u out of range (%u..%u)\n", |
c471b331 | 727 | fe->dvb->num, parms->frequency, freq_min, freq_max); |
1fab46f0 OE |
728 | return -EINVAL; |
729 | } | |
730 | ||
731 | /* range check: symbol rate */ | |
732 | if (fe->ops.info.type == FE_QPSK) { | |
733 | if ((fe->ops.info.symbol_rate_min && | |
734 | parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) || | |
735 | (fe->ops.info.symbol_rate_max && | |
736 | parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) { | |
737 | printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n", | |
738 | fe->dvb->num, parms->u.qpsk.symbol_rate, | |
739 | fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max); | |
740 | return -EINVAL; | |
741 | } | |
742 | ||
743 | } else if (fe->ops.info.type == FE_QAM) { | |
744 | if ((fe->ops.info.symbol_rate_min && | |
745 | parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) || | |
746 | (fe->ops.info.symbol_rate_max && | |
747 | parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) { | |
748 | printk(KERN_WARNING "DVB: frontend %u symbol rate %u out of range (%u..%u)\n", | |
749 | fe->dvb->num, parms->u.qam.symbol_rate, | |
750 | fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max); | |
751 | return -EINVAL; | |
752 | } | |
753 | } | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
56f0680a | 758 | struct dtv_cmds_h dtv_cmds[] = { |
e7fee0f3 ST |
759 | [DTV_TUNE] = { |
760 | .name = "DTV_TUNE", | |
761 | .cmd = DTV_TUNE, | |
6b73eeaf ST |
762 | .set = 1, |
763 | }, | |
e7fee0f3 ST |
764 | [DTV_CLEAR] = { |
765 | .name = "DTV_CLEAR", | |
766 | .cmd = DTV_CLEAR, | |
6b73eeaf ST |
767 | .set = 1, |
768 | }, | |
769 | ||
770 | /* Set */ | |
363429a0 ST |
771 | [DTV_FREQUENCY] = { |
772 | .name = "DTV_FREQUENCY", | |
773 | .cmd = DTV_FREQUENCY, | |
6b73eeaf ST |
774 | .set = 1, |
775 | }, | |
363429a0 ST |
776 | [DTV_BANDWIDTH] = { |
777 | .name = "DTV_BANDWIDTH", | |
778 | .cmd = DTV_BANDWIDTH, | |
6b73eeaf ST |
779 | .set = 1, |
780 | }, | |
363429a0 ST |
781 | [DTV_MODULATION] = { |
782 | .name = "DTV_MODULATION", | |
783 | .cmd = DTV_MODULATION, | |
6b73eeaf ST |
784 | .set = 1, |
785 | }, | |
363429a0 ST |
786 | [DTV_INVERSION] = { |
787 | .name = "DTV_INVERSION", | |
788 | .cmd = DTV_INVERSION, | |
6b73eeaf ST |
789 | .set = 1, |
790 | }, | |
363429a0 ST |
791 | [DTV_DISEQC_MASTER] = { |
792 | .name = "DTV_DISEQC_MASTER", | |
793 | .cmd = DTV_DISEQC_MASTER, | |
6b73eeaf ST |
794 | .set = 1, |
795 | .buffer = 1, | |
796 | }, | |
363429a0 ST |
797 | [DTV_SYMBOL_RATE] = { |
798 | .name = "DTV_SYMBOL_RATE", | |
799 | .cmd = DTV_SYMBOL_RATE, | |
6b73eeaf ST |
800 | .set = 1, |
801 | }, | |
363429a0 ST |
802 | [DTV_INNER_FEC] = { |
803 | .name = "DTV_INNER_FEC", | |
804 | .cmd = DTV_INNER_FEC, | |
6b73eeaf ST |
805 | .set = 1, |
806 | }, | |
363429a0 ST |
807 | [DTV_VOLTAGE] = { |
808 | .name = "DTV_VOLTAGE", | |
809 | .cmd = DTV_VOLTAGE, | |
6b73eeaf ST |
810 | .set = 1, |
811 | }, | |
363429a0 ST |
812 | [DTV_TONE] = { |
813 | .name = "DTV_TONE", | |
814 | .cmd = DTV_TONE, | |
6b73eeaf ST |
815 | .set = 1, |
816 | }, | |
363429a0 ST |
817 | [DTV_PILOT] = { |
818 | .name = "DTV_PILOT", | |
819 | .cmd = DTV_PILOT, | |
6b73eeaf ST |
820 | .set = 1, |
821 | }, | |
363429a0 ST |
822 | [DTV_ROLLOFF] = { |
823 | .name = "DTV_ROLLOFF", | |
824 | .cmd = DTV_ROLLOFF, | |
6b73eeaf ST |
825 | .set = 1, |
826 | }, | |
363429a0 ST |
827 | [DTV_DELIVERY_SYSTEM] = { |
828 | .name = "DTV_DELIVERY_SYSTEM", | |
829 | .cmd = DTV_DELIVERY_SYSTEM, | |
6b73eeaf ST |
830 | .set = 1, |
831 | }, | |
363429a0 ST |
832 | [DTV_ISDB_SEGMENT_IDX] = { |
833 | .name = "DTV_ISDB_SEGMENT_IDX", | |
834 | .cmd = DTV_ISDB_SEGMENT_IDX, | |
6b73eeaf ST |
835 | .set = 1, |
836 | }, | |
363429a0 ST |
837 | [DTV_ISDB_SEGMENT_WIDTH] = { |
838 | .name = "DTV_ISDB_SEGMENT_WIDTH", | |
839 | .cmd = DTV_ISDB_SEGMENT_WIDTH, | |
6b73eeaf ST |
840 | .set = 1, |
841 | }, | |
842 | ||
843 | /* Get */ | |
363429a0 ST |
844 | [DTV_DISEQC_SLAVE_REPLY] = { |
845 | .name = "DTV_DISEQC_SLAVE_REPLY", | |
846 | .cmd = DTV_DISEQC_SLAVE_REPLY, | |
6b73eeaf ST |
847 | .set = 0, |
848 | .buffer = 1, | |
849 | }, | |
363429a0 ST |
850 | [DTV_ISDB_LAYERA_FEC] = { |
851 | .name = "DTV_ISDB_LAYERA_FEC", | |
852 | .cmd = DTV_ISDB_LAYERA_FEC, | |
6b73eeaf ST |
853 | .set = 0, |
854 | }, | |
363429a0 ST |
855 | [DTV_ISDB_LAYERA_MODULATION] = { |
856 | .name = "DTV_ISDB_LAYERA_MODULATION", | |
857 | .cmd = DTV_ISDB_LAYERA_MODULATION, | |
6b73eeaf ST |
858 | .set = 0, |
859 | }, | |
363429a0 ST |
860 | [DTV_ISDB_LAYERA_SEGMENT_WIDTH] = { |
861 | .name = "DTV_ISDB_LAYERA_SEGMENT_WIDTH", | |
862 | .cmd = DTV_ISDB_LAYERA_SEGMENT_WIDTH, | |
6b73eeaf ST |
863 | .set = 0, |
864 | }, | |
363429a0 ST |
865 | [DTV_ISDB_LAYERB_FEC] = { |
866 | .name = "DTV_ISDB_LAYERB_FEC", | |
867 | .cmd = DTV_ISDB_LAYERB_FEC, | |
6b73eeaf ST |
868 | .set = 0, |
869 | }, | |
363429a0 ST |
870 | [DTV_ISDB_LAYERB_MODULATION] = { |
871 | .name = "DTV_ISDB_LAYERB_MODULATION", | |
872 | .cmd = DTV_ISDB_LAYERB_MODULATION, | |
6b73eeaf ST |
873 | .set = 0, |
874 | }, | |
363429a0 ST |
875 | [DTV_ISDB_LAYERB_SEGMENT_WIDTH] = { |
876 | .name = "DTV_ISDB_LAYERB_SEGMENT_WIDTH", | |
877 | .cmd = DTV_ISDB_LAYERB_SEGMENT_WIDTH, | |
6b73eeaf ST |
878 | .set = 0, |
879 | }, | |
363429a0 ST |
880 | [DTV_ISDB_LAYERC_FEC] = { |
881 | .name = "DTV_ISDB_LAYERC_FEC", | |
882 | .cmd = DTV_ISDB_LAYERC_FEC, | |
6b73eeaf ST |
883 | .set = 0, |
884 | }, | |
363429a0 ST |
885 | [DTV_ISDB_LAYERC_MODULATION] = { |
886 | .name = "DTV_ISDB_LAYERC_MODULATION", | |
887 | .cmd = DTV_ISDB_LAYERC_MODULATION, | |
6b73eeaf ST |
888 | .set = 0, |
889 | }, | |
363429a0 ST |
890 | [DTV_ISDB_LAYERC_SEGMENT_WIDTH] = { |
891 | .name = "DTV_ISDB_LAYERC_SEGMENT_WIDTH", | |
892 | .cmd = DTV_ISDB_LAYERC_SEGMENT_WIDTH, | |
6b73eeaf ST |
893 | .set = 0, |
894 | }, | |
895 | }; | |
896 | ||
e7fee0f3 | 897 | void dtv_property_dump(struct dtv_property *tvp) |
6b73eeaf ST |
898 | { |
899 | int i; | |
900 | ||
901 | printk("%s() tvp.cmd = 0x%08x (%s)\n" | |
902 | ,__FUNCTION__ | |
903 | ,tvp->cmd | |
56f0680a | 904 | ,dtv_cmds[ tvp->cmd ].name); |
6b73eeaf | 905 | |
56f0680a | 906 | if(dtv_cmds[ tvp->cmd ].buffer) { |
6b73eeaf ST |
907 | |
908 | printk("%s() tvp.u.buffer.len = 0x%02x\n" | |
909 | ,__FUNCTION__ | |
910 | ,tvp->u.buffer.len); | |
911 | ||
912 | for(i = 0; i < tvp->u.buffer.len; i++) | |
913 | printk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n" | |
914 | ,__FUNCTION__ | |
915 | ,i | |
916 | ,tvp->u.buffer.data[i]); | |
917 | ||
918 | } else | |
919 | printk("%s() tvp.u.data = 0x%08x\n", __FUNCTION__, tvp->u.data); | |
920 | } | |
921 | ||
922 | int is_legacy_delivery_system(fe_delivery_system_t s) | |
923 | { | |
924 | if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) || | |
925 | (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS)) | |
926 | return 1; | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
ee33c525 ST |
931 | /* Synchronise the legacy tuning parameters into the cache, so that demodulator |
932 | * drivers can use a single set_frontend tuning function, regardless of whether | |
933 | * it's being used for the legacy or new API, reducing code and complexity. | |
934 | */ | |
935 | void dtv_property_cache_sync(struct dvb_frontend *fe, struct dvb_frontend_parameters *p) | |
936 | { | |
937 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
938 | ||
d5748f10 ST |
939 | printk("%s()\n", __FUNCTION__); |
940 | ||
ee33c525 ST |
941 | c->frequency = p->frequency; |
942 | c->inversion = p->inversion; | |
943 | ||
944 | switch (fe->ops.info.type) { | |
945 | case FE_QPSK: | |
946 | c->symbol_rate = p->u.qpsk.symbol_rate; | |
947 | c->fec_inner = p->u.qpsk.fec_inner; | |
80a773c9 | 948 | c->delivery_system = SYS_DVBS; |
ee33c525 ST |
949 | break; |
950 | case FE_QAM: | |
951 | c->symbol_rate = p->u.qam.symbol_rate; | |
952 | c->fec_inner = p->u.qam.fec_inner; | |
953 | c->modulation = p->u.qam.modulation; | |
80a773c9 | 954 | c->delivery_system = SYS_DVBC_ANNEX_AC; |
ee33c525 ST |
955 | break; |
956 | case FE_OFDM: | |
957 | c->bandwidth = p->u.ofdm.bandwidth; | |
958 | c->code_rate_HP = p->u.ofdm.code_rate_HP; | |
959 | c->code_rate_LP = p->u.ofdm.code_rate_LP; | |
960 | c->modulation = p->u.ofdm.constellation; | |
961 | c->transmission_mode = p->u.ofdm.transmission_mode; | |
962 | c->guard_interval = p->u.ofdm.guard_interval; | |
963 | c->hierarchy = p->u.ofdm.hierarchy_information; | |
80a773c9 | 964 | c->delivery_system = SYS_DVBT; |
ee33c525 ST |
965 | break; |
966 | case FE_ATSC: | |
967 | c->modulation = p->u.vsb.modulation; | |
80a773c9 ST |
968 | if ((c->modulation == VSB_8) || (c->modulation == VSB_16)) |
969 | c->delivery_system = SYS_ATSC; | |
970 | else | |
971 | c->delivery_system = SYS_DVBC_ANNEX_B; | |
ee33c525 ST |
972 | break; |
973 | } | |
974 | } | |
975 | ||
d5748f10 ST |
976 | /* Ensure the cached values are set correctly in the frontend |
977 | * legacy tuning structures, for the advanced tuning API. | |
978 | */ | |
979 | void dtv_property_legacy_params_sync(struct dvb_frontend *fe) | |
6b73eeaf | 980 | { |
d5748f10 ST |
981 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
982 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
983 | struct dvb_frontend_parameters *p = &fepriv->parameters; | |
6b73eeaf | 984 | |
d5748f10 | 985 | printk("%s()\n", __FUNCTION__); |
6b73eeaf | 986 | |
d5748f10 ST |
987 | p->frequency = c->frequency; |
988 | p->inversion = c->inversion; | |
6b73eeaf | 989 | |
d5748f10 ST |
990 | switch (fe->ops.info.type) { |
991 | case FE_QPSK: | |
992 | printk("%s() Preparing QPSK req\n", __FUNCTION__); | |
993 | p->u.qpsk.symbol_rate = c->symbol_rate; | |
994 | p->u.qpsk.fec_inner = c->fec_inner; | |
80a773c9 | 995 | c->delivery_system = SYS_DVBS; |
d5748f10 ST |
996 | break; |
997 | case FE_QAM: | |
998 | printk("%s() Preparing QAM req\n", __FUNCTION__); | |
999 | p->u.qam.symbol_rate = c->symbol_rate; | |
1000 | p->u.qam.fec_inner = c->fec_inner; | |
1001 | p->u.qam.modulation = c->modulation; | |
80a773c9 | 1002 | c->delivery_system = SYS_DVBC_ANNEX_AC; |
d5748f10 ST |
1003 | break; |
1004 | case FE_OFDM: | |
1005 | printk("%s() Preparing OFDM req\n", __FUNCTION__); | |
1006 | p->u.ofdm.bandwidth = c->bandwidth; | |
1007 | p->u.ofdm.code_rate_HP = c->code_rate_HP; | |
1008 | p->u.ofdm.code_rate_LP = c->code_rate_LP; | |
1009 | p->u.ofdm.constellation = c->modulation; | |
1010 | p->u.ofdm.transmission_mode = c->transmission_mode; | |
1011 | p->u.ofdm.guard_interval = c->guard_interval; | |
1012 | p->u.ofdm.hierarchy_information = c->hierarchy; | |
80a773c9 | 1013 | c->delivery_system = SYS_DVBT; |
d5748f10 ST |
1014 | break; |
1015 | case FE_ATSC: | |
1016 | printk("%s() Preparing VSB req\n", __FUNCTION__); | |
1017 | p->u.vsb.modulation = c->modulation; | |
80a773c9 ST |
1018 | if ((c->modulation == VSB_8) || (c->modulation == VSB_16)) |
1019 | c->delivery_system = SYS_ATSC; | |
1020 | else | |
1021 | c->delivery_system = SYS_DVBC_ANNEX_B; | |
d5748f10 ST |
1022 | break; |
1023 | } | |
1024 | } | |
1025 | ||
1026 | /* Ensure the cached values are set correctly in the frontend | |
1027 | * legacy tuning structures, for the legacy tuning API. | |
1028 | */ | |
1029 | void dtv_property_adv_params_sync(struct dvb_frontend *fe) | |
1030 | { | |
56f0680a | 1031 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
6b73eeaf | 1032 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
d5748f10 | 1033 | struct dvb_frontend_parameters *p = &fepriv->parameters; |
6b73eeaf ST |
1034 | |
1035 | printk("%s()\n", __FUNCTION__); | |
1036 | ||
d5748f10 ST |
1037 | p->frequency = c->frequency; |
1038 | p->inversion = c->inversion; | |
1039 | ||
1040 | switch(c->modulation) { | |
1041 | case _8PSK: | |
1042 | case _16APSK: | |
1043 | case NBC_QPSK: | |
1044 | p->u.qpsk.symbol_rate = c->symbol_rate; | |
1045 | p->u.qpsk.fec_inner = c->fec_inner; | |
1046 | break; | |
1047 | default: | |
1048 | break; | |
1049 | } | |
1050 | ||
1051 | if(c->delivery_system == SYS_ISDBT) { | |
1052 | /* Fake out a generic DVB-T request so we pass validation in the ioctl */ | |
1053 | p->frequency = c->frequency; | |
1054 | p->inversion = INVERSION_AUTO; | |
1055 | p->u.ofdm.constellation = QAM_AUTO; | |
1056 | p->u.ofdm.code_rate_HP = FEC_AUTO; | |
1057 | p->u.ofdm.code_rate_LP = FEC_AUTO; | |
1058 | p->u.ofdm.bandwidth = BANDWIDTH_AUTO; | |
1059 | p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO; | |
1060 | p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO; | |
1061 | p->u.ofdm.hierarchy_information = HIERARCHY_AUTO; | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | void dtv_property_cache_submit(struct dvb_frontend *fe) | |
1066 | { | |
1067 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
1068 | ||
1069 | printk("%s()\n", __FUNCTION__); | |
1070 | ||
1071 | /* For legacy delivery systems we don't need the delivery_system to | |
1072 | * be specified, but we populate the older structures from the cache | |
1073 | * so we can call set_frontend on older drivers. | |
1074 | */ | |
6b73eeaf | 1075 | if(is_legacy_delivery_system(c->delivery_system)) { |
6b73eeaf | 1076 | |
d5748f10 ST |
1077 | printk("%s() legacy, modulation = %d\n", __FUNCTION__, c->modulation); |
1078 | dtv_property_legacy_params_sync(fe); | |
6b73eeaf | 1079 | |
6b73eeaf | 1080 | } else { |
d5748f10 ST |
1081 | printk("%s() adv, modulation = %d\n", __FUNCTION__, c->modulation); |
1082 | ||
6b73eeaf ST |
1083 | /* For advanced delivery systems / modulation types ... |
1084 | * we seed the lecacy dvb_frontend_parameters structure | |
1085 | * so that the sanity checking code later in the IOCTL processing | |
1086 | * can validate our basic frequency ranges, symbolrates, modulation | |
1087 | * etc. | |
1088 | */ | |
d5748f10 | 1089 | dtv_property_adv_params_sync(fe); |
6b73eeaf | 1090 | } |
6b73eeaf ST |
1091 | } |
1092 | ||
13c97bf5 ST |
1093 | static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file, |
1094 | unsigned int cmd, void *parg); | |
1095 | static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file, | |
1096 | unsigned int cmd, void *parg); | |
1097 | ||
363429a0 ST |
1098 | int dtv_property_process_get(struct dvb_frontend *fe, struct dtv_property *tvp, |
1099 | struct inode *inode, struct file *file) | |
1100 | { | |
1101 | int r = 0; | |
1102 | ||
1103 | printk("%s()\n", __FUNCTION__); | |
1104 | ||
1105 | dtv_property_dump(tvp); | |
1106 | ||
bfbf2dae ST |
1107 | /* Allow the frontend to validate incoming properties */ |
1108 | if (fe->ops.get_property) | |
1109 | r = fe->ops.get_property(fe, tvp); | |
1110 | ||
1111 | if (r < 0) | |
1112 | return r; | |
1113 | ||
363429a0 ST |
1114 | switch(tvp->cmd) { |
1115 | case DTV_FREQUENCY: | |
1116 | tvp->u.data = fe->dtv_property_cache.frequency; | |
1117 | break; | |
1118 | case DTV_MODULATION: | |
1119 | tvp->u.data = fe->dtv_property_cache.modulation; | |
1120 | break; | |
1121 | case DTV_BANDWIDTH: | |
1122 | tvp->u.data = fe->dtv_property_cache.bandwidth; | |
1123 | break; | |
1124 | case DTV_INVERSION: | |
1125 | tvp->u.data = fe->dtv_property_cache.inversion; | |
1126 | break; | |
1127 | case DTV_SYMBOL_RATE: | |
1128 | tvp->u.data = fe->dtv_property_cache.symbol_rate; | |
1129 | break; | |
1130 | case DTV_INNER_FEC: | |
1131 | tvp->u.data = fe->dtv_property_cache.fec_inner; | |
1132 | break; | |
1133 | case DTV_PILOT: | |
1134 | tvp->u.data = fe->dtv_property_cache.pilot; | |
1135 | break; | |
1136 | case DTV_ROLLOFF: | |
1137 | tvp->u.data = fe->dtv_property_cache.rolloff; | |
1138 | break; | |
1139 | case DTV_DELIVERY_SYSTEM: | |
1140 | tvp->u.data = fe->dtv_property_cache.delivery_system; | |
1141 | break; | |
1142 | ||
1143 | /* ISDB-T Support here */ | |
1144 | case DTV_ISDB_SEGMENT_IDX: | |
1145 | tvp->u.data = fe->dtv_property_cache.isdb_segment_idx; | |
1146 | break; | |
1147 | case DTV_ISDB_SEGMENT_WIDTH: | |
1148 | tvp->u.data = fe->dtv_property_cache.isdb_segment_width; | |
1149 | break; | |
1150 | case DTV_ISDB_LAYERA_FEC: | |
1151 | tvp->u.data = fe->dtv_property_cache.isdb_layera_fec; | |
1152 | break; | |
1153 | case DTV_ISDB_LAYERA_MODULATION: | |
1154 | tvp->u.data = fe->dtv_property_cache.isdb_layera_modulation; | |
1155 | break; | |
1156 | case DTV_ISDB_LAYERA_SEGMENT_WIDTH: | |
1157 | tvp->u.data = fe->dtv_property_cache.isdb_layera_segment_width; | |
1158 | break; | |
1159 | case DTV_ISDB_LAYERB_FEC: | |
1160 | tvp->u.data = fe->dtv_property_cache.isdb_layerb_fec; | |
1161 | break; | |
1162 | case DTV_ISDB_LAYERB_MODULATION: | |
1163 | tvp->u.data = fe->dtv_property_cache.isdb_layerb_modulation; | |
1164 | break; | |
1165 | case DTV_ISDB_LAYERB_SEGMENT_WIDTH: | |
1166 | tvp->u.data = fe->dtv_property_cache.isdb_layerb_segment_width; | |
1167 | break; | |
1168 | case DTV_ISDB_LAYERC_FEC: | |
1169 | tvp->u.data = fe->dtv_property_cache.isdb_layerc_fec; | |
1170 | break; | |
1171 | case DTV_ISDB_LAYERC_MODULATION: | |
1172 | tvp->u.data = fe->dtv_property_cache.isdb_layerc_modulation; | |
1173 | break; | |
1174 | case DTV_ISDB_LAYERC_SEGMENT_WIDTH: | |
1175 | tvp->u.data = fe->dtv_property_cache.isdb_layerc_segment_width; | |
1176 | break; | |
1177 | case DTV_VOLTAGE: | |
1178 | tvp->u.data = fe->dtv_property_cache.voltage; | |
1179 | break; | |
1180 | case DTV_TONE: | |
1181 | tvp->u.data = fe->dtv_property_cache.sectone; | |
1182 | break; | |
1183 | default: | |
1184 | r = -1; | |
1185 | } | |
1186 | ||
1187 | return r; | |
1188 | } | |
1189 | ||
1190 | int dtv_property_process_set(struct dvb_frontend *fe, struct dtv_property *tvp, | |
13c97bf5 | 1191 | struct inode *inode, struct file *file) |
6b73eeaf ST |
1192 | { |
1193 | int r = 0; | |
13c97bf5 | 1194 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
6b73eeaf | 1195 | printk("%s()\n", __FUNCTION__); |
56f0680a | 1196 | dtv_property_dump(tvp); |
6b73eeaf | 1197 | |
bfbf2dae ST |
1198 | /* Allow the frontend to validate incoming properties */ |
1199 | if (fe->ops.set_property) | |
1200 | r = fe->ops.set_property(fe, tvp); | |
1201 | ||
1202 | if (r < 0) | |
1203 | return r; | |
1204 | ||
6b73eeaf | 1205 | switch(tvp->cmd) { |
e7fee0f3 | 1206 | case DTV_CLEAR: |
6b73eeaf ST |
1207 | /* Reset a cache of data specific to the frontend here. This does |
1208 | * not effect hardware. | |
1209 | */ | |
1210 | printk("%s() Flushing property cache\n", __FUNCTION__); | |
56f0680a | 1211 | memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties)); |
e7fee0f3 | 1212 | fe->dtv_property_cache.state = tvp->cmd; |
56f0680a | 1213 | fe->dtv_property_cache.delivery_system = SYS_UNDEFINED; |
6b73eeaf | 1214 | break; |
e7fee0f3 | 1215 | case DTV_TUNE: |
6b73eeaf | 1216 | /* interpret the cache of data, build either a traditional frontend |
d5748f10 ST |
1217 | * tunerequest so we can pass validation in the FE_SET_FRONTEND |
1218 | * ioctl. | |
6b73eeaf | 1219 | */ |
e7fee0f3 | 1220 | fe->dtv_property_cache.state = tvp->cmd; |
6b73eeaf | 1221 | printk("%s() Finalised property cache\n", __FUNCTION__); |
d5748f10 ST |
1222 | dtv_property_cache_submit(fe); |
1223 | ||
13c97bf5 ST |
1224 | r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND, |
1225 | &fepriv->parameters); | |
6b73eeaf | 1226 | break; |
363429a0 | 1227 | case DTV_FREQUENCY: |
56f0680a | 1228 | fe->dtv_property_cache.frequency = tvp->u.data; |
6b73eeaf | 1229 | break; |
363429a0 | 1230 | case DTV_MODULATION: |
56f0680a | 1231 | fe->dtv_property_cache.modulation = tvp->u.data; |
6b73eeaf | 1232 | break; |
363429a0 | 1233 | case DTV_BANDWIDTH: |
56f0680a | 1234 | fe->dtv_property_cache.bandwidth = tvp->u.data; |
6b73eeaf | 1235 | break; |
363429a0 | 1236 | case DTV_INVERSION: |
56f0680a | 1237 | fe->dtv_property_cache.inversion = tvp->u.data; |
6b73eeaf | 1238 | break; |
363429a0 | 1239 | case DTV_SYMBOL_RATE: |
56f0680a | 1240 | fe->dtv_property_cache.symbol_rate = tvp->u.data; |
6b73eeaf | 1241 | break; |
363429a0 | 1242 | case DTV_INNER_FEC: |
56f0680a | 1243 | fe->dtv_property_cache.fec_inner = tvp->u.data; |
6b73eeaf | 1244 | break; |
363429a0 | 1245 | case DTV_PILOT: |
56f0680a | 1246 | fe->dtv_property_cache.pilot = tvp->u.data; |
6b73eeaf | 1247 | break; |
363429a0 | 1248 | case DTV_ROLLOFF: |
56f0680a | 1249 | fe->dtv_property_cache.rolloff = tvp->u.data; |
6b73eeaf | 1250 | break; |
363429a0 | 1251 | case DTV_DELIVERY_SYSTEM: |
56f0680a | 1252 | fe->dtv_property_cache.delivery_system = tvp->u.data; |
6b73eeaf | 1253 | break; |
6b73eeaf ST |
1254 | |
1255 | /* ISDB-T Support here */ | |
363429a0 | 1256 | case DTV_ISDB_SEGMENT_IDX: |
d7c15001 | 1257 | fe->dtv_property_cache.isdb_segment_idx = tvp->u.data; |
6b73eeaf | 1258 | break; |
363429a0 | 1259 | case DTV_ISDB_SEGMENT_WIDTH: |
56f0680a | 1260 | fe->dtv_property_cache.isdb_segment_width = tvp->u.data; |
6b73eeaf | 1261 | break; |
363429a0 | 1262 | case DTV_VOLTAGE: |
56f0680a | 1263 | fe->dtv_property_cache.voltage = tvp->u.data; |
13c97bf5 | 1264 | r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE, |
56f0680a | 1265 | (void *)fe->dtv_property_cache.voltage); |
13c97bf5 | 1266 | break; |
363429a0 | 1267 | case DTV_TONE: |
56f0680a | 1268 | fe->dtv_property_cache.sectone = tvp->u.data; |
13c97bf5 | 1269 | r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE, |
56f0680a | 1270 | (void *)fe->dtv_property_cache.sectone); |
13c97bf5 | 1271 | break; |
363429a0 ST |
1272 | default: |
1273 | r = -1; | |
6b73eeaf ST |
1274 | } |
1275 | ||
13c97bf5 | 1276 | return r; |
6b73eeaf ST |
1277 | } |
1278 | ||
1da177e4 LT |
1279 | static int dvb_frontend_ioctl(struct inode *inode, struct file *file, |
1280 | unsigned int cmd, void *parg) | |
1281 | { | |
1282 | struct dvb_device *dvbdev = file->private_data; | |
1283 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 1284 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
1285 | int err = -EOPNOTSUPP; |
1286 | ||
46b4f7c1 | 1287 | dprintk ("%s\n", __func__); |
1da177e4 | 1288 | |
813ce47c | 1289 | if (fepriv->exit) |
1da177e4 LT |
1290 | return -ENODEV; |
1291 | ||
1292 | if ((file->f_flags & O_ACCMODE) == O_RDONLY && | |
1293 | (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT || | |
1294 | cmd == FE_DISEQC_RECV_SLAVE_REPLY)) | |
1295 | return -EPERM; | |
1296 | ||
1297 | if (down_interruptible (&fepriv->sem)) | |
1298 | return -ERESTARTSYS; | |
1299 | ||
13c97bf5 ST |
1300 | if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY)) |
1301 | err = dvb_frontend_ioctl_properties(inode, file, cmd, parg); | |
1302 | else | |
1303 | err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg); | |
1304 | ||
1305 | up(&fepriv->sem); | |
1306 | return err; | |
1307 | } | |
1308 | ||
1309 | static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file, | |
1310 | unsigned int cmd, void *parg) | |
1311 | { | |
1312 | struct dvb_device *dvbdev = file->private_data; | |
1313 | struct dvb_frontend *fe = dvbdev->priv; | |
e6f9ec86 | 1314 | int err = 0; |
e7fee0f3 ST |
1315 | |
1316 | struct dtv_properties *tvps = NULL; | |
1317 | struct dtv_property *tvp = NULL; | |
1318 | int i; | |
13c97bf5 ST |
1319 | |
1320 | dprintk("%s\n", __func__); | |
1321 | ||
6b73eeaf ST |
1322 | if(cmd == FE_SET_PROPERTY) { |
1323 | printk("%s() FE_SET_PROPERTY\n", __FUNCTION__); | |
1324 | ||
e7fee0f3 | 1325 | tvps = (struct dtv_properties __user *)parg; |
6b73eeaf | 1326 | |
e7fee0f3 ST |
1327 | printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num); |
1328 | printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props); | |
1329 | ||
1330 | /* Put an arbitrary limit on the number of messages that can | |
1331 | * be sent at once */ | |
1332 | if (tvps->num > DTV_IOCTL_MAX_MSGS) | |
1333 | return -EINVAL; | |
1334 | ||
1335 | tvp = (struct dtv_property *) kmalloc(tvps->num * | |
1336 | sizeof(struct dtv_property), GFP_KERNEL); | |
1337 | if (!tvp) { | |
1338 | err = -ENOMEM; | |
1339 | goto out; | |
6b73eeaf ST |
1340 | } |
1341 | ||
e7fee0f3 ST |
1342 | if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) { |
1343 | err = -EFAULT; | |
1344 | goto out; | |
1345 | } | |
1346 | ||
1347 | for (i = 0; i < tvps->num; i++) | |
bfbf2dae | 1348 | err |= dtv_property_process_set(fe, tvp + i, inode, file); |
e7fee0f3 ST |
1349 | |
1350 | if(fe->dtv_property_cache.state == DTV_TUNE) { | |
6b73eeaf | 1351 | printk("%s() Property cache is full, tuning\n", __FUNCTION__); |
6b73eeaf | 1352 | } |
bfbf2dae | 1353 | |
363429a0 ST |
1354 | } else |
1355 | if(cmd == FE_GET_PROPERTY) { | |
1356 | printk("%s() FE_GET_PROPERTY\n", __FUNCTION__); | |
1357 | ||
1358 | tvps = (struct dtv_properties __user *)parg; | |
1359 | ||
1360 | printk("%s() properties.num = %d\n", __FUNCTION__, tvps->num); | |
1361 | printk("%s() properties.props = %p\n", __FUNCTION__, tvps->props); | |
1362 | ||
1363 | /* Put an arbitrary limit on the number of messages that can | |
1364 | * be sent at once */ | |
1365 | if (tvps->num > DTV_IOCTL_MAX_MSGS) | |
1366 | return -EINVAL; | |
1367 | ||
1368 | tvp = (struct dtv_property *) kmalloc(tvps->num * | |
1369 | sizeof(struct dtv_property), GFP_KERNEL); | |
1370 | if (!tvp) { | |
1371 | err = -ENOMEM; | |
1372 | goto out; | |
1373 | } | |
1374 | ||
1375 | if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) { | |
1376 | err = -EFAULT; | |
1377 | goto out; | |
1378 | } | |
1379 | ||
1380 | for (i = 0; i < tvps->num; i++) | |
bfbf2dae | 1381 | err |= dtv_property_process_get(fe, tvp + i, inode, file); |
363429a0 ST |
1382 | |
1383 | if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) { | |
1384 | err = -EFAULT; | |
1385 | goto out; | |
1386 | } | |
1387 | ||
363429a0 ST |
1388 | } else |
1389 | err = -EOPNOTSUPP; | |
1390 | ||
e7fee0f3 ST |
1391 | out: |
1392 | kfree(tvp); | |
13c97bf5 ST |
1393 | return err; |
1394 | } | |
1395 | ||
1396 | static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file, | |
1397 | unsigned int cmd, void *parg) | |
1398 | { | |
1399 | struct dvb_device *dvbdev = file->private_data; | |
1400 | struct dvb_frontend *fe = dvbdev->priv; | |
1401 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
1402 | int err = -EOPNOTSUPP; | |
1403 | ||
1da177e4 LT |
1404 | switch (cmd) { |
1405 | case FE_GET_INFO: { | |
0c53c70f | 1406 | struct dvb_frontend_info* info = parg; |
dea74869 | 1407 | memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info)); |
c471b331 | 1408 | dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max); |
1da177e4 LT |
1409 | |
1410 | /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't | |
1411 | * do it, it is done for it. */ | |
1412 | info->caps |= FE_CAN_INVERSION_AUTO; | |
1413 | err = 0; | |
1414 | break; | |
1415 | } | |
1416 | ||
6757ccc5 PB |
1417 | case FE_READ_STATUS: { |
1418 | fe_status_t* status = parg; | |
1419 | ||
1420 | /* if retune was requested but hasn't occured yet, prevent | |
1421 | * that user get signal state from previous tuning */ | |
1422 | if(fepriv->state == FESTATE_RETUNE) { | |
1423 | err=0; | |
1424 | *status = 0; | |
1425 | break; | |
1426 | } | |
1427 | ||
dea74869 PB |
1428 | if (fe->ops.read_status) |
1429 | err = fe->ops.read_status(fe, status); | |
1da177e4 | 1430 | break; |
6757ccc5 | 1431 | } |
1da177e4 | 1432 | case FE_READ_BER: |
dea74869 PB |
1433 | if (fe->ops.read_ber) |
1434 | err = fe->ops.read_ber(fe, (__u32*) parg); | |
1da177e4 LT |
1435 | break; |
1436 | ||
1437 | case FE_READ_SIGNAL_STRENGTH: | |
dea74869 PB |
1438 | if (fe->ops.read_signal_strength) |
1439 | err = fe->ops.read_signal_strength(fe, (__u16*) parg); | |
1da177e4 LT |
1440 | break; |
1441 | ||
1442 | case FE_READ_SNR: | |
dea74869 PB |
1443 | if (fe->ops.read_snr) |
1444 | err = fe->ops.read_snr(fe, (__u16*) parg); | |
1da177e4 LT |
1445 | break; |
1446 | ||
1447 | case FE_READ_UNCORRECTED_BLOCKS: | |
dea74869 PB |
1448 | if (fe->ops.read_ucblocks) |
1449 | err = fe->ops.read_ucblocks(fe, (__u32*) parg); | |
1da177e4 LT |
1450 | break; |
1451 | ||
1452 | ||
1453 | case FE_DISEQC_RESET_OVERLOAD: | |
dea74869 PB |
1454 | if (fe->ops.diseqc_reset_overload) { |
1455 | err = fe->ops.diseqc_reset_overload(fe); | |
1da177e4 LT |
1456 | fepriv->state = FESTATE_DISEQC; |
1457 | fepriv->status = 0; | |
1458 | } | |
1459 | break; | |
1460 | ||
1461 | case FE_DISEQC_SEND_MASTER_CMD: | |
dea74869 PB |
1462 | if (fe->ops.diseqc_send_master_cmd) { |
1463 | err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg); | |
1da177e4 LT |
1464 | fepriv->state = FESTATE_DISEQC; |
1465 | fepriv->status = 0; | |
1466 | } | |
1467 | break; | |
1468 | ||
1469 | case FE_DISEQC_SEND_BURST: | |
dea74869 PB |
1470 | if (fe->ops.diseqc_send_burst) { |
1471 | err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg); | |
1da177e4 LT |
1472 | fepriv->state = FESTATE_DISEQC; |
1473 | fepriv->status = 0; | |
1474 | } | |
1475 | break; | |
1476 | ||
1477 | case FE_SET_TONE: | |
dea74869 PB |
1478 | if (fe->ops.set_tone) { |
1479 | err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg); | |
64454016 | 1480 | fepriv->tone = (fe_sec_tone_mode_t) parg; |
1da177e4 LT |
1481 | fepriv->state = FESTATE_DISEQC; |
1482 | fepriv->status = 0; | |
1483 | } | |
1484 | break; | |
1485 | ||
1486 | case FE_SET_VOLTAGE: | |
dea74869 PB |
1487 | if (fe->ops.set_voltage) { |
1488 | err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg); | |
64454016 | 1489 | fepriv->voltage = (fe_sec_voltage_t) parg; |
1da177e4 LT |
1490 | fepriv->state = FESTATE_DISEQC; |
1491 | fepriv->status = 0; | |
1492 | } | |
1493 | break; | |
1494 | ||
1495 | case FE_DISHNETWORK_SEND_LEGACY_CMD: | |
dea74869 PB |
1496 | if (fe->ops.dishnetwork_send_legacy_command) { |
1497 | err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg); | |
1da177e4 LT |
1498 | fepriv->state = FESTATE_DISEQC; |
1499 | fepriv->status = 0; | |
dea74869 | 1500 | } else if (fe->ops.set_voltage) { |
83b75b04 N |
1501 | /* |
1502 | * NOTE: This is a fallback condition. Some frontends | |
1503 | * (stv0299 for instance) take longer than 8msec to | |
1504 | * respond to a set_voltage command. Those switches | |
1505 | * need custom routines to switch properly. For all | |
1506 | * other frontends, the following shoule work ok. | |
1507 | * Dish network legacy switches (as used by Dish500) | |
1508 | * are controlled by sending 9-bit command words | |
1509 | * spaced 8msec apart. | |
1510 | * the actual command word is switch/port dependant | |
1511 | * so it is up to the userspace application to send | |
1512 | * the right command. | |
1513 | * The command must always start with a '0' after | |
1514 | * initialization, so parg is 8 bits and does not | |
1515 | * include the initialization or start bit | |
1516 | */ | |
c6eb8eaf | 1517 | unsigned long swcmd = ((unsigned long) parg) << 1; |
83b75b04 N |
1518 | struct timeval nexttime; |
1519 | struct timeval tv[10]; | |
1520 | int i; | |
1521 | u8 last = 1; | |
1522 | if (dvb_frontend_debug) | |
c6eb8eaf | 1523 | printk("%s switch command: 0x%04lx\n", __func__, swcmd); |
83b75b04 N |
1524 | do_gettimeofday(&nexttime); |
1525 | if (dvb_frontend_debug) | |
1526 | memcpy(&tv[0], &nexttime, sizeof(struct timeval)); | |
1527 | /* before sending a command, initialize by sending | |
1528 | * a 32ms 18V to the switch | |
1529 | */ | |
dea74869 | 1530 | fe->ops.set_voltage(fe, SEC_VOLTAGE_18); |
83b75b04 N |
1531 | dvb_frontend_sleep_until(&nexttime, 32000); |
1532 | ||
1533 | for (i = 0; i < 9; i++) { | |
1534 | if (dvb_frontend_debug) | |
1535 | do_gettimeofday(&tv[i + 1]); | |
c6eb8eaf | 1536 | if ((swcmd & 0x01) != last) { |
83b75b04 | 1537 | /* set voltage to (last ? 13V : 18V) */ |
dea74869 | 1538 | fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18); |
83b75b04 N |
1539 | last = (last) ? 0 : 1; |
1540 | } | |
c6eb8eaf | 1541 | swcmd = swcmd >> 1; |
83b75b04 N |
1542 | if (i != 8) |
1543 | dvb_frontend_sleep_until(&nexttime, 8000); | |
1544 | } | |
1545 | if (dvb_frontend_debug) { | |
1546 | printk("%s(%d): switch delay (should be 32k followed by all 8k\n", | |
46b4f7c1 | 1547 | __func__, fe->dvb->num); |
83b75b04 N |
1548 | for (i = 1; i < 10; i++) |
1549 | printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i])); | |
1550 | } | |
1551 | err = 0; | |
1552 | fepriv->state = FESTATE_DISEQC; | |
1553 | fepriv->status = 0; | |
1da177e4 LT |
1554 | } |
1555 | break; | |
1556 | ||
1557 | case FE_DISEQC_RECV_SLAVE_REPLY: | |
dea74869 PB |
1558 | if (fe->ops.diseqc_recv_slave_reply) |
1559 | err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg); | |
1da177e4 LT |
1560 | break; |
1561 | ||
1562 | case FE_ENABLE_HIGH_LNB_VOLTAGE: | |
dea74869 PB |
1563 | if (fe->ops.enable_high_lnb_voltage) |
1564 | err = fe->ops.enable_high_lnb_voltage(fe, (long) parg); | |
1da177e4 LT |
1565 | break; |
1566 | ||
1567 | case FE_SET_FRONTEND: { | |
1568 | struct dvb_frontend_tune_settings fetunesettings; | |
1569 | ||
ee33c525 ST |
1570 | dtv_property_cache_sync(fe, &fepriv->parameters); |
1571 | ||
e7fee0f3 | 1572 | if(fe->dtv_property_cache.state == DTV_TUNE) { |
6b73eeaf ST |
1573 | if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) { |
1574 | err = -EINVAL; | |
1575 | break; | |
1576 | } | |
1577 | } else { | |
1578 | if (dvb_frontend_check_parameters(fe, parg) < 0) { | |
1579 | err = -EINVAL; | |
1580 | break; | |
1581 | } | |
1fab46f0 | 1582 | |
6b73eeaf ST |
1583 | memcpy (&fepriv->parameters, parg, |
1584 | sizeof (struct dvb_frontend_parameters)); | |
1585 | } | |
1da177e4 LT |
1586 | |
1587 | memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings)); | |
1588 | memcpy(&fetunesettings.parameters, parg, | |
1589 | sizeof (struct dvb_frontend_parameters)); | |
1590 | ||
1591 | /* force auto frequency inversion if requested */ | |
1592 | if (dvb_force_auto_inversion) { | |
1593 | fepriv->parameters.inversion = INVERSION_AUTO; | |
1594 | fetunesettings.parameters.inversion = INVERSION_AUTO; | |
1595 | } | |
dea74869 | 1596 | if (fe->ops.info.type == FE_OFDM) { |
1b3c3714 | 1597 | /* without hierarchical coding code_rate_LP is irrelevant, |
1da177e4 LT |
1598 | * so we tolerate the otherwise invalid FEC_NONE setting */ |
1599 | if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE && | |
1600 | fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE) | |
1601 | fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO; | |
1602 | } | |
1603 | ||
1604 | /* get frontend-specific tuning settings */ | |
dea74869 | 1605 | if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) { |
1da177e4 LT |
1606 | fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000; |
1607 | fepriv->max_drift = fetunesettings.max_drift; | |
1608 | fepriv->step_size = fetunesettings.step_size; | |
1609 | } else { | |
1610 | /* default values */ | |
dea74869 | 1611 | switch(fe->ops.info.type) { |
1da177e4 LT |
1612 | case FE_QPSK: |
1613 | fepriv->min_delay = HZ/20; | |
1614 | fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000; | |
1615 | fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000; | |
1616 | break; | |
1617 | ||
1618 | case FE_QAM: | |
1619 | fepriv->min_delay = HZ/20; | |
1620 | fepriv->step_size = 0; /* no zigzag */ | |
1621 | fepriv->max_drift = 0; | |
1622 | break; | |
1623 | ||
1624 | case FE_OFDM: | |
1625 | fepriv->min_delay = HZ/20; | |
dea74869 PB |
1626 | fepriv->step_size = fe->ops.info.frequency_stepsize * 2; |
1627 | fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1; | |
1da177e4 LT |
1628 | break; |
1629 | case FE_ATSC: | |
4821fb1d MA |
1630 | fepriv->min_delay = HZ/20; |
1631 | fepriv->step_size = 0; | |
1632 | fepriv->max_drift = 0; | |
1da177e4 LT |
1633 | break; |
1634 | } | |
1635 | } | |
1636 | if (dvb_override_tune_delay > 0) | |
1637 | fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000; | |
1638 | ||
1639 | fepriv->state = FESTATE_RETUNE; | |
1640 | dvb_frontend_wakeup(fe); | |
1641 | dvb_frontend_add_event(fe, 0); | |
1642 | fepriv->status = 0; | |
1643 | err = 0; | |
1644 | break; | |
1645 | } | |
1646 | ||
1647 | case FE_GET_EVENT: | |
1648 | err = dvb_frontend_get_event (fe, parg, file->f_flags); | |
1649 | break; | |
1650 | ||
1651 | case FE_GET_FRONTEND: | |
dea74869 | 1652 | if (fe->ops.get_frontend) { |
1da177e4 | 1653 | memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters)); |
dea74869 | 1654 | err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg); |
1da177e4 LT |
1655 | } |
1656 | break; | |
36cb557a AQ |
1657 | |
1658 | case FE_SET_FRONTEND_TUNE_MODE: | |
e18828e4 | 1659 | fepriv->tune_mode_flags = (unsigned long) parg; |
1b172e0c | 1660 | err = 0; |
36cb557a | 1661 | break; |
1da177e4 LT |
1662 | }; |
1663 | ||
1da177e4 LT |
1664 | return err; |
1665 | } | |
1666 | ||
6b73eeaf | 1667 | |
1da177e4 LT |
1668 | static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait) |
1669 | { | |
1670 | struct dvb_device *dvbdev = file->private_data; | |
1671 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 1672 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 | 1673 | |
46b4f7c1 | 1674 | dprintk ("%s\n", __func__); |
1da177e4 LT |
1675 | |
1676 | poll_wait (file, &fepriv->events.wait_queue, wait); | |
1677 | ||
1678 | if (fepriv->events.eventw != fepriv->events.eventr) | |
1679 | return (POLLIN | POLLRDNORM | POLLPRI); | |
1680 | ||
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | static int dvb_frontend_open(struct inode *inode, struct file *file) | |
1685 | { | |
1686 | struct dvb_device *dvbdev = file->private_data; | |
1687 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 1688 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
1689 | int ret; |
1690 | ||
46b4f7c1 | 1691 | dprintk ("%s\n", __func__); |
1da177e4 | 1692 | |
48136e1e OE |
1693 | if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) { |
1694 | if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0) | |
ba7e6f3e | 1695 | return ret; |
ba7e6f3e ST |
1696 | } |
1697 | ||
48136e1e OE |
1698 | if ((ret = dvb_generic_open (inode, file)) < 0) |
1699 | goto err1; | |
04c56d0e | 1700 | |
48136e1e | 1701 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { |
04c56d0e AQ |
1702 | /* normal tune mode when opened R/W */ |
1703 | fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT; | |
1704 | fepriv->tone = -1; | |
1705 | fepriv->voltage = -1; | |
1706 | ||
1da177e4 LT |
1707 | ret = dvb_frontend_start (fe); |
1708 | if (ret) | |
48136e1e | 1709 | goto err2; |
1da177e4 LT |
1710 | |
1711 | /* empty event queue */ | |
1712 | fepriv->events.eventr = fepriv->events.eventw = 0; | |
1713 | } | |
1714 | ||
1715 | return ret; | |
48136e1e OE |
1716 | |
1717 | err2: | |
1718 | dvb_generic_release(inode, file); | |
1719 | err1: | |
1720 | if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) | |
1721 | fe->ops.ts_bus_ctrl(fe, 0); | |
1722 | return ret; | |
1da177e4 LT |
1723 | } |
1724 | ||
1725 | static int dvb_frontend_release(struct inode *inode, struct file *file) | |
1726 | { | |
1727 | struct dvb_device *dvbdev = file->private_data; | |
1728 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 1729 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
ca5be9cd | 1730 | int ret; |
1da177e4 | 1731 | |
46b4f7c1 | 1732 | dprintk ("%s\n", __func__); |
1da177e4 LT |
1733 | |
1734 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) | |
1735 | fepriv->release_jiffies = jiffies; | |
1736 | ||
ca5be9cd MR |
1737 | ret = dvb_generic_release (inode, file); |
1738 | ||
48136e1e OE |
1739 | if (dvbdev->users == -1) { |
1740 | if (fepriv->exit == 1) { | |
1741 | fops_put(file->f_op); | |
1742 | file->f_op = NULL; | |
1743 | wake_up(&dvbdev->wait_queue); | |
1744 | } | |
1745 | if (fe->ops.ts_bus_ctrl) | |
1746 | fe->ops.ts_bus_ctrl(fe, 0); | |
ca5be9cd | 1747 | } |
48136e1e | 1748 | |
ca5be9cd | 1749 | return ret; |
1da177e4 LT |
1750 | } |
1751 | ||
1752 | static struct file_operations dvb_frontend_fops = { | |
1753 | .owner = THIS_MODULE, | |
1754 | .ioctl = dvb_generic_ioctl, | |
1755 | .poll = dvb_frontend_poll, | |
1756 | .open = dvb_frontend_open, | |
1757 | .release = dvb_frontend_release | |
1758 | }; | |
1759 | ||
1760 | int dvb_register_frontend(struct dvb_adapter* dvb, | |
1761 | struct dvb_frontend* fe) | |
1762 | { | |
1763 | struct dvb_frontend_private *fepriv; | |
1764 | static const struct dvb_device dvbdev_template = { | |
1765 | .users = ~0, | |
1766 | .writers = 1, | |
1767 | .readers = (~0)-1, | |
1768 | .fops = &dvb_frontend_fops, | |
1769 | .kernel_ioctl = dvb_frontend_ioctl | |
1770 | }; | |
1771 | ||
46b4f7c1 | 1772 | dprintk ("%s\n", __func__); |
1da177e4 | 1773 | |
3593cab5 | 1774 | if (mutex_lock_interruptible(&frontend_mutex)) |
1da177e4 LT |
1775 | return -ERESTARTSYS; |
1776 | ||
7408187d | 1777 | fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL); |
1da177e4 | 1778 | if (fe->frontend_priv == NULL) { |
3593cab5 | 1779 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
1780 | return -ENOMEM; |
1781 | } | |
0c53c70f | 1782 | fepriv = fe->frontend_priv; |
1da177e4 LT |
1783 | |
1784 | init_MUTEX (&fepriv->sem); | |
1785 | init_waitqueue_head (&fepriv->wait_queue); | |
1786 | init_waitqueue_head (&fepriv->events.wait_queue); | |
03b76123 | 1787 | mutex_init(&fepriv->events.mtx); |
1da177e4 LT |
1788 | fe->dvb = dvb; |
1789 | fepriv->inversion = INVERSION_OFF; | |
1790 | ||
1791 | printk ("DVB: registering frontend %i (%s)...\n", | |
1792 | fe->dvb->num, | |
dea74869 | 1793 | fe->ops.info.name); |
1da177e4 LT |
1794 | |
1795 | dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template, | |
1796 | fe, DVB_DEVICE_FRONTEND); | |
1797 | ||
3593cab5 | 1798 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
1799 | return 0; |
1800 | } | |
1801 | EXPORT_SYMBOL(dvb_register_frontend); | |
1802 | ||
1803 | int dvb_unregister_frontend(struct dvb_frontend* fe) | |
1804 | { | |
0c53c70f | 1805 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
46b4f7c1 | 1806 | dprintk ("%s\n", __func__); |
1da177e4 | 1807 | |
57861b43 | 1808 | mutex_lock(&frontend_mutex); |
ca5be9cd | 1809 | dvb_frontend_stop (fe); |
57861b43 MR |
1810 | mutex_unlock(&frontend_mutex); |
1811 | ||
1812 | if (fepriv->dvbdev->users < -1) | |
1813 | wait_event(fepriv->dvbdev->wait_queue, | |
1814 | fepriv->dvbdev->users==-1); | |
1815 | ||
3593cab5 | 1816 | mutex_lock(&frontend_mutex); |
1da177e4 | 1817 | dvb_unregister_device (fepriv->dvbdev); |
d9955060 | 1818 | |
1da177e4 LT |
1819 | /* fe is invalid now */ |
1820 | kfree(fepriv); | |
3593cab5 | 1821 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
1822 | return 0; |
1823 | } | |
1824 | EXPORT_SYMBOL(dvb_unregister_frontend); | |
f52a838b | 1825 | |
149ef72d | 1826 | #ifdef CONFIG_MEDIA_ATTACH |
f52a838b AQ |
1827 | void dvb_frontend_detach(struct dvb_frontend* fe) |
1828 | { | |
1829 | void *ptr; | |
1830 | ||
1831 | if (fe->ops.release_sec) { | |
1832 | fe->ops.release_sec(fe); | |
1833 | symbol_put_addr(fe->ops.release_sec); | |
1834 | } | |
1835 | if (fe->ops.tuner_ops.release) { | |
1836 | fe->ops.tuner_ops.release(fe); | |
1837 | symbol_put_addr(fe->ops.tuner_ops.release); | |
1838 | } | |
2426a27e MK |
1839 | if (fe->ops.analog_ops.release) { |
1840 | fe->ops.analog_ops.release(fe); | |
1841 | symbol_put_addr(fe->ops.analog_ops.release); | |
1842 | } | |
f52a838b AQ |
1843 | ptr = (void*)fe->ops.release; |
1844 | if (ptr) { | |
1845 | fe->ops.release(fe); | |
1846 | symbol_put_addr(ptr); | |
1847 | } | |
1848 | } | |
1849 | #else | |
1850 | void dvb_frontend_detach(struct dvb_frontend* fe) | |
1851 | { | |
1852 | if (fe->ops.release_sec) | |
1853 | fe->ops.release_sec(fe); | |
1854 | if (fe->ops.tuner_ops.release) | |
1855 | fe->ops.tuner_ops.release(fe); | |
2426a27e MK |
1856 | if (fe->ops.analog_ops.release) |
1857 | fe->ops.analog_ops.release(fe); | |
f52a838b AQ |
1858 | if (fe->ops.release) |
1859 | fe->ops.release(fe); | |
1860 | } | |
1861 | #endif | |
1862 | EXPORT_SYMBOL(dvb_frontend_detach); |