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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" | |
eacf8d8d | 43 | #include <linux/dvb/version.h> |
1da177e4 LT |
44 | |
45 | static int dvb_frontend_debug; | |
849be2cd | 46 | static int dvb_shutdown_timeout; |
1da177e4 LT |
47 | static int dvb_force_auto_inversion; |
48 | static int dvb_override_tune_delay; | |
49 | static int dvb_powerdown_on_sleep = 1; | |
59b1842d | 50 | static int dvb_mfe_wait_time = 5; |
1da177e4 LT |
51 | |
52 | module_param_named(frontend_debug, dvb_frontend_debug, int, 0644); | |
f4f009a7 | 53 | MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off)."); |
6baad3f0 | 54 | module_param(dvb_shutdown_timeout, int, 0644); |
1da177e4 | 55 | MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware"); |
6baad3f0 | 56 | module_param(dvb_force_auto_inversion, int, 0644); |
1da177e4 | 57 | MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always"); |
6baad3f0 | 58 | module_param(dvb_override_tune_delay, int, 0644); |
1da177e4 | 59 | MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt"); |
6baad3f0 | 60 | module_param(dvb_powerdown_on_sleep, int, 0644); |
a8558577 | 61 | MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)"); |
59b1842d DB |
62 | module_param(dvb_mfe_wait_time, int, 0644); |
63 | MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open() for multi-frontend to become available (default:5 seconds)"); | |
1da177e4 LT |
64 | |
65 | #define dprintk if (dvb_frontend_debug) printk | |
66 | ||
67 | #define FESTATE_IDLE 1 | |
68 | #define FESTATE_RETUNE 2 | |
69 | #define FESTATE_TUNING_FAST 4 | |
70 | #define FESTATE_TUNING_SLOW 8 | |
71 | #define FESTATE_TUNED 16 | |
72 | #define FESTATE_ZIGZAG_FAST 32 | |
73 | #define FESTATE_ZIGZAG_SLOW 64 | |
74 | #define FESTATE_DISEQC 128 | |
75 | #define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC) | |
76 | #define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST) | |
77 | #define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW) | |
78 | #define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW) | |
0249ef16 MA |
79 | |
80 | #define FE_ALGO_HW 1 | |
1da177e4 LT |
81 | /* |
82 | * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling. | |
83 | * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune. | |
84 | * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress. | |
85 | * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower. | |
86 | * FESTATE_TUNED. The frontend has successfully locked on. | |
87 | * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it. | |
88 | * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower. | |
89 | * FESTATE_DISEQC. A DISEQC command has just been issued. | |
90 | * FESTATE_WAITFORLOCK. When we're waiting for a lock. | |
91 | * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan. | |
92 | * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan. | |
93 | * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again. | |
94 | */ | |
95 | ||
3593cab5 | 96 | static DEFINE_MUTEX(frontend_mutex); |
1da177e4 LT |
97 | |
98 | struct dvb_frontend_private { | |
99 | ||
36cb557a | 100 | /* thread/frontend values */ |
1da177e4 LT |
101 | struct dvb_device *dvbdev; |
102 | struct dvb_frontend_parameters parameters; | |
103 | struct dvb_fe_events events; | |
104 | struct semaphore sem; | |
105 | struct list_head list_head; | |
106 | wait_queue_head_t wait_queue; | |
8eec1429 | 107 | struct task_struct *thread; |
1da177e4 | 108 | unsigned long release_jiffies; |
36cb557a AQ |
109 | unsigned int exit; |
110 | unsigned int wakeup; | |
1da177e4 | 111 | fe_status_t status; |
400b7083 | 112 | unsigned long tune_mode_flags; |
36cb557a | 113 | unsigned int delay; |
86f40cc3 | 114 | unsigned int reinitialise; |
64454016 AQ |
115 | int tone; |
116 | int voltage; | |
36cb557a AQ |
117 | |
118 | /* swzigzag values */ | |
119 | unsigned int state; | |
120 | unsigned int bending; | |
121 | int lnb_drift; | |
122 | unsigned int inversion; | |
123 | unsigned int auto_step; | |
124 | unsigned int auto_sub_step; | |
125 | unsigned int started_auto_step; | |
126 | unsigned int min_delay; | |
127 | unsigned int max_drift; | |
128 | unsigned int step_size; | |
129 | int quality; | |
130 | unsigned int check_wrapped; | |
c59e7870 | 131 | enum dvbfe_search algo_status; |
1da177e4 LT |
132 | }; |
133 | ||
86f40cc3 | 134 | static void dvb_frontend_wakeup(struct dvb_frontend *fe); |
1da177e4 LT |
135 | |
136 | static void dvb_frontend_add_event(struct dvb_frontend *fe, fe_status_t status) | |
137 | { | |
0c53c70f | 138 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
139 | struct dvb_fe_events *events = &fepriv->events; |
140 | struct dvb_frontend_event *e; | |
141 | int wp; | |
142 | ||
46b4f7c1 | 143 | dprintk ("%s\n", __func__); |
1da177e4 | 144 | |
03b76123 | 145 | if (mutex_lock_interruptible (&events->mtx)) |
1da177e4 LT |
146 | return; |
147 | ||
148 | wp = (events->eventw + 1) % MAX_EVENT; | |
149 | ||
150 | if (wp == events->eventr) { | |
151 | events->overflow = 1; | |
152 | events->eventr = (events->eventr + 1) % MAX_EVENT; | |
153 | } | |
154 | ||
155 | e = &events->events[events->eventw]; | |
156 | ||
157 | memcpy (&e->parameters, &fepriv->parameters, | |
158 | sizeof (struct dvb_frontend_parameters)); | |
159 | ||
160 | if (status & FE_HAS_LOCK) | |
dea74869 PB |
161 | if (fe->ops.get_frontend) |
162 | fe->ops.get_frontend(fe, &e->parameters); | |
1da177e4 LT |
163 | |
164 | events->eventw = wp; | |
165 | ||
03b76123 | 166 | mutex_unlock(&events->mtx); |
1da177e4 LT |
167 | |
168 | e->status = status; | |
169 | ||
170 | wake_up_interruptible (&events->wait_queue); | |
171 | } | |
172 | ||
173 | static int dvb_frontend_get_event(struct dvb_frontend *fe, | |
174 | struct dvb_frontend_event *event, int flags) | |
175 | { | |
0c53c70f | 176 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
177 | struct dvb_fe_events *events = &fepriv->events; |
178 | ||
46b4f7c1 | 179 | dprintk ("%s\n", __func__); |
1da177e4 LT |
180 | |
181 | if (events->overflow) { | |
182 | events->overflow = 0; | |
183 | return -EOVERFLOW; | |
184 | } | |
185 | ||
186 | if (events->eventw == events->eventr) { | |
187 | int ret; | |
188 | ||
189 | if (flags & O_NONBLOCK) | |
190 | return -EWOULDBLOCK; | |
191 | ||
192 | up(&fepriv->sem); | |
193 | ||
194 | ret = wait_event_interruptible (events->wait_queue, | |
195 | events->eventw != events->eventr); | |
196 | ||
197 | if (down_interruptible (&fepriv->sem)) | |
198 | return -ERESTARTSYS; | |
199 | ||
200 | if (ret < 0) | |
201 | return ret; | |
202 | } | |
203 | ||
03b76123 | 204 | if (mutex_lock_interruptible (&events->mtx)) |
1da177e4 LT |
205 | return -ERESTARTSYS; |
206 | ||
207 | memcpy (event, &events->events[events->eventr], | |
208 | sizeof(struct dvb_frontend_event)); | |
209 | ||
210 | events->eventr = (events->eventr + 1) % MAX_EVENT; | |
211 | ||
03b76123 | 212 | mutex_unlock(&events->mtx); |
1da177e4 LT |
213 | |
214 | return 0; | |
215 | } | |
216 | ||
217 | static void dvb_frontend_init(struct dvb_frontend *fe) | |
218 | { | |
363c35fc | 219 | dprintk ("DVB: initialising adapter %i frontend %i (%s)...\n", |
1da177e4 | 220 | fe->dvb->num, |
363c35fc | 221 | fe->id, |
dea74869 PB |
222 | fe->ops.info.name); |
223 | ||
224 | if (fe->ops.init) | |
225 | fe->ops.init(fe); | |
226 | if (fe->ops.tuner_ops.init) { | |
3b37a15c MA |
227 | if (fe->ops.i2c_gate_ctrl) |
228 | fe->ops.i2c_gate_ctrl(fe, 1); | |
dea74869 PB |
229 | fe->ops.tuner_ops.init(fe); |
230 | if (fe->ops.i2c_gate_ctrl) | |
231 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7eef5dd6 | 232 | } |
1da177e4 LT |
233 | } |
234 | ||
86f40cc3 AQ |
235 | void dvb_frontend_reinitialise(struct dvb_frontend *fe) |
236 | { | |
237 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
238 | ||
239 | fepriv->reinitialise = 1; | |
240 | dvb_frontend_wakeup(fe); | |
241 | } | |
242 | EXPORT_SYMBOL(dvb_frontend_reinitialise); | |
243 | ||
36cb557a | 244 | static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked) |
1da177e4 | 245 | { |
36cb557a | 246 | int q2; |
1da177e4 | 247 | |
46b4f7c1 | 248 | dprintk ("%s\n", __func__); |
1da177e4 | 249 | |
36cb557a AQ |
250 | if (locked) |
251 | (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256; | |
252 | else | |
253 | (fepriv->quality) = (fepriv->quality * 220 + 0) / 256; | |
1da177e4 | 254 | |
36cb557a AQ |
255 | q2 = fepriv->quality - 128; |
256 | q2 *= q2; | |
1da177e4 | 257 | |
36cb557a | 258 | fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128); |
1da177e4 LT |
259 | } |
260 | ||
261 | /** | |
262 | * Performs automatic twiddling of frontend parameters. | |
263 | * | |
264 | * @param fe The frontend concerned. | |
265 | * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT | |
266 | * @returns Number of complete iterations that have been performed. | |
267 | */ | |
36cb557a | 268 | static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped) |
1da177e4 LT |
269 | { |
270 | int autoinversion; | |
271 | int ready = 0; | |
0c53c70f | 272 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
273 | int original_inversion = fepriv->parameters.inversion; |
274 | u32 original_frequency = fepriv->parameters.frequency; | |
275 | ||
276 | /* are we using autoinversion? */ | |
dea74869 | 277 | autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) && |
1da177e4 LT |
278 | (fepriv->parameters.inversion == INVERSION_AUTO)); |
279 | ||
280 | /* setup parameters correctly */ | |
281 | while(!ready) { | |
282 | /* calculate the lnb_drift */ | |
283 | fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size; | |
284 | ||
285 | /* wrap the auto_step if we've exceeded the maximum drift */ | |
286 | if (fepriv->lnb_drift > fepriv->max_drift) { | |
287 | fepriv->auto_step = 0; | |
288 | fepriv->auto_sub_step = 0; | |
289 | fepriv->lnb_drift = 0; | |
290 | } | |
291 | ||
292 | /* perform inversion and +/- zigzag */ | |
293 | switch(fepriv->auto_sub_step) { | |
294 | case 0: | |
295 | /* try with the current inversion and current drift setting */ | |
296 | ready = 1; | |
297 | break; | |
298 | ||
299 | case 1: | |
300 | if (!autoinversion) break; | |
301 | ||
302 | fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF; | |
303 | ready = 1; | |
304 | break; | |
305 | ||
306 | case 2: | |
307 | if (fepriv->lnb_drift == 0) break; | |
308 | ||
309 | fepriv->lnb_drift = -fepriv->lnb_drift; | |
310 | ready = 1; | |
311 | break; | |
312 | ||
313 | case 3: | |
314 | if (fepriv->lnb_drift == 0) break; | |
315 | if (!autoinversion) break; | |
316 | ||
317 | fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF; | |
318 | fepriv->lnb_drift = -fepriv->lnb_drift; | |
319 | ready = 1; | |
320 | break; | |
321 | ||
322 | default: | |
323 | fepriv->auto_step++; | |
324 | fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */ | |
325 | break; | |
326 | } | |
327 | ||
328 | if (!ready) fepriv->auto_sub_step++; | |
329 | } | |
330 | ||
331 | /* if this attempt would hit where we started, indicate a complete | |
332 | * iteration has occurred */ | |
333 | if ((fepriv->auto_step == fepriv->started_auto_step) && | |
334 | (fepriv->auto_sub_step == 0) && check_wrapped) { | |
335 | return 1; | |
336 | } | |
337 | ||
338 | dprintk("%s: drift:%i inversion:%i auto_step:%i " | |
339 | "auto_sub_step:%i started_auto_step:%i\n", | |
46b4f7c1 | 340 | __func__, fepriv->lnb_drift, fepriv->inversion, |
1da177e4 LT |
341 | fepriv->auto_step, fepriv->auto_sub_step, fepriv->started_auto_step); |
342 | ||
343 | /* set the frontend itself */ | |
344 | fepriv->parameters.frequency += fepriv->lnb_drift; | |
345 | if (autoinversion) | |
346 | fepriv->parameters.inversion = fepriv->inversion; | |
dea74869 PB |
347 | if (fe->ops.set_frontend) |
348 | fe->ops.set_frontend(fe, &fepriv->parameters); | |
1da177e4 LT |
349 | |
350 | fepriv->parameters.frequency = original_frequency; | |
351 | fepriv->parameters.inversion = original_inversion; | |
352 | ||
353 | fepriv->auto_sub_step++; | |
354 | return 0; | |
355 | } | |
356 | ||
36cb557a AQ |
357 | static void dvb_frontend_swzigzag(struct dvb_frontend *fe) |
358 | { | |
30d9464c | 359 | fe_status_t s = 0; |
36cb557a AQ |
360 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
361 | ||
362 | /* if we've got no parameters, just keep idling */ | |
363 | if (fepriv->state & FESTATE_IDLE) { | |
364 | fepriv->delay = 3*HZ; | |
365 | fepriv->quality = 0; | |
366 | return; | |
367 | } | |
368 | ||
369 | /* in SCAN mode, we just set the frontend when asked and leave it alone */ | |
370 | if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) { | |
371 | if (fepriv->state & FESTATE_RETUNE) { | |
dea74869 PB |
372 | if (fe->ops.set_frontend) |
373 | fe->ops.set_frontend(fe, &fepriv->parameters); | |
36cb557a AQ |
374 | fepriv->state = FESTATE_TUNED; |
375 | } | |
376 | fepriv->delay = 3*HZ; | |
377 | fepriv->quality = 0; | |
378 | return; | |
379 | } | |
380 | ||
381 | /* get the frontend status */ | |
382 | if (fepriv->state & FESTATE_RETUNE) { | |
383 | s = 0; | |
384 | } else { | |
dea74869 PB |
385 | if (fe->ops.read_status) |
386 | fe->ops.read_status(fe, &s); | |
36cb557a AQ |
387 | if (s != fepriv->status) { |
388 | dvb_frontend_add_event(fe, s); | |
389 | fepriv->status = s; | |
390 | } | |
391 | } | |
392 | ||
393 | /* if we're not tuned, and we have a lock, move to the TUNED state */ | |
394 | if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) { | |
395 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
396 | fepriv->state = FESTATE_TUNED; | |
397 | ||
398 | /* if we're tuned, then we have determined the correct inversion */ | |
dea74869 | 399 | if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) && |
36cb557a AQ |
400 | (fepriv->parameters.inversion == INVERSION_AUTO)) { |
401 | fepriv->parameters.inversion = fepriv->inversion; | |
402 | } | |
403 | return; | |
404 | } | |
405 | ||
406 | /* if we are tuned already, check we're still locked */ | |
407 | if (fepriv->state & FESTATE_TUNED) { | |
408 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
409 | ||
410 | /* we're tuned, and the lock is still good... */ | |
411 | if (s & FE_HAS_LOCK) { | |
412 | return; | |
413 | } else { /* if we _WERE_ tuned, but now don't have a lock */ | |
414 | fepriv->state = FESTATE_ZIGZAG_FAST; | |
415 | fepriv->started_auto_step = fepriv->auto_step; | |
416 | fepriv->check_wrapped = 0; | |
417 | } | |
418 | } | |
419 | ||
420 | /* don't actually do anything if we're in the LOSTLOCK state, | |
421 | * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */ | |
422 | if ((fepriv->state & FESTATE_LOSTLOCK) && | |
dea74869 | 423 | (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) { |
36cb557a AQ |
424 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); |
425 | return; | |
426 | } | |
427 | ||
428 | /* don't do anything if we're in the DISEQC state, since this | |
429 | * might be someone with a motorized dish controlled by DISEQC. | |
430 | * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */ | |
431 | if (fepriv->state & FESTATE_DISEQC) { | |
432 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
433 | return; | |
434 | } | |
435 | ||
436 | /* if we're in the RETUNE state, set everything up for a brand | |
437 | * new scan, keeping the current inversion setting, as the next | |
438 | * tune is _very_ likely to require the same */ | |
439 | if (fepriv->state & FESTATE_RETUNE) { | |
440 | fepriv->lnb_drift = 0; | |
441 | fepriv->auto_step = 0; | |
442 | fepriv->auto_sub_step = 0; | |
443 | fepriv->started_auto_step = 0; | |
444 | fepriv->check_wrapped = 0; | |
445 | } | |
446 | ||
447 | /* fast zigzag. */ | |
448 | if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) { | |
449 | fepriv->delay = fepriv->min_delay; | |
450 | ||
451 | /* peform a tune */ | |
452 | if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) { | |
453 | /* OK, if we've run out of trials at the fast speed. | |
454 | * Drop back to slow for the _next_ attempt */ | |
455 | fepriv->state = FESTATE_SEARCHING_SLOW; | |
456 | fepriv->started_auto_step = fepriv->auto_step; | |
457 | return; | |
458 | } | |
459 | fepriv->check_wrapped = 1; | |
460 | ||
461 | /* if we've just retuned, enter the ZIGZAG_FAST state. | |
462 | * This ensures we cannot return from an | |
463 | * FE_SET_FRONTEND ioctl before the first frontend tune | |
464 | * occurs */ | |
465 | if (fepriv->state & FESTATE_RETUNE) { | |
466 | fepriv->state = FESTATE_TUNING_FAST; | |
467 | } | |
468 | } | |
469 | ||
470 | /* slow zigzag */ | |
471 | if (fepriv->state & FESTATE_SEARCHING_SLOW) { | |
472 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
473 | ||
474 | /* Note: don't bother checking for wrapping; we stay in this | |
475 | * state until we get a lock */ | |
476 | dvb_frontend_swzigzag_autotune(fe, 0); | |
477 | } | |
478 | } | |
479 | ||
1da177e4 LT |
480 | static int dvb_frontend_is_exiting(struct dvb_frontend *fe) |
481 | { | |
0c53c70f | 482 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
483 | |
484 | if (fepriv->exit) | |
485 | return 1; | |
486 | ||
487 | if (fepriv->dvbdev->writers == 1) | |
cc89c229 | 488 | if (time_after(jiffies, fepriv->release_jiffies + |
36cb557a | 489 | dvb_shutdown_timeout * HZ)) |
1da177e4 LT |
490 | return 1; |
491 | ||
492 | return 0; | |
493 | } | |
494 | ||
495 | static int dvb_frontend_should_wakeup(struct dvb_frontend *fe) | |
496 | { | |
0c53c70f | 497 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
498 | |
499 | if (fepriv->wakeup) { | |
500 | fepriv->wakeup = 0; | |
501 | return 1; | |
502 | } | |
503 | return dvb_frontend_is_exiting(fe); | |
504 | } | |
505 | ||
506 | static void dvb_frontend_wakeup(struct dvb_frontend *fe) | |
507 | { | |
0c53c70f | 508 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
509 | |
510 | fepriv->wakeup = 1; | |
511 | wake_up_interruptible(&fepriv->wait_queue); | |
512 | } | |
513 | ||
1da177e4 LT |
514 | static int dvb_frontend_thread(void *data) |
515 | { | |
0c53c70f JS |
516 | struct dvb_frontend *fe = data; |
517 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
1da177e4 | 518 | unsigned long timeout; |
1da177e4 | 519 | fe_status_t s; |
c59e7870 MA |
520 | enum dvbfe_algo algo; |
521 | ||
36cb557a | 522 | struct dvb_frontend_parameters *params; |
1da177e4 | 523 | |
46b4f7c1 | 524 | dprintk("%s\n", __func__); |
1da177e4 | 525 | |
36cb557a AQ |
526 | fepriv->check_wrapped = 0; |
527 | fepriv->quality = 0; | |
528 | fepriv->delay = 3*HZ; | |
1da177e4 | 529 | fepriv->status = 0; |
1da177e4 | 530 | fepriv->wakeup = 0; |
04c56d0e AQ |
531 | fepriv->reinitialise = 0; |
532 | ||
533 | dvb_frontend_init(fe); | |
1da177e4 | 534 | |
83144186 | 535 | set_freezable(); |
1da177e4 LT |
536 | while (1) { |
537 | up(&fepriv->sem); /* is locked when we enter the thread... */ | |
6591691b | 538 | restart: |
1da177e4 | 539 | timeout = wait_event_interruptible_timeout(fepriv->wait_queue, |
e42837bc RW |
540 | dvb_frontend_should_wakeup(fe) || kthread_should_stop() |
541 | || freezing(current), | |
8eec1429 HP |
542 | fepriv->delay); |
543 | ||
544 | if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) { | |
1da177e4 | 545 | /* got signal or quitting */ |
57594a58 | 546 | fepriv->exit = 1; |
1da177e4 LT |
547 | break; |
548 | } | |
549 | ||
8eec1429 | 550 | if (try_to_freeze()) |
6591691b | 551 | goto restart; |
1da177e4 LT |
552 | |
553 | if (down_interruptible(&fepriv->sem)) | |
554 | break; | |
555 | ||
86f40cc3 AQ |
556 | if (fepriv->reinitialise) { |
557 | dvb_frontend_init(fe); | |
64454016 | 558 | if (fepriv->tone != -1) { |
dea74869 | 559 | fe->ops.set_tone(fe, fepriv->tone); |
64454016 AQ |
560 | } |
561 | if (fepriv->voltage != -1) { | |
dea74869 | 562 | fe->ops.set_voltage(fe, fepriv->voltage); |
64454016 | 563 | } |
86f40cc3 AQ |
564 | fepriv->reinitialise = 0; |
565 | } | |
566 | ||
36cb557a | 567 | /* do an iteration of the tuning loop */ |
d772bd03 | 568 | if (fe->ops.get_frontend_algo) { |
c59e7870 MA |
569 | algo = fe->ops.get_frontend_algo(fe); |
570 | switch (algo) { | |
571 | case DVBFE_ALGO_HW: | |
572 | dprintk("%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__); | |
573 | params = NULL; /* have we been asked to RETUNE ? */ | |
574 | ||
d772bd03 | 575 | if (fepriv->state & FESTATE_RETUNE) { |
c59e7870 | 576 | dprintk("%s: Retune requested, FESTATE_RETUNE\n", __func__); |
f7c9bf96 | 577 | params = &fepriv->parameters; |
d772bd03 MA |
578 | fepriv->state = FESTATE_TUNED; |
579 | } | |
580 | ||
c59e7870 MA |
581 | if (fe->ops.tune) |
582 | fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s); | |
583 | ||
2fac9a0f | 584 | if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) { |
c59e7870 | 585 | dprintk("%s: state changed, adding current state\n", __func__); |
d772bd03 MA |
586 | dvb_frontend_add_event(fe, s); |
587 | fepriv->status = s; | |
588 | } | |
c59e7870 MA |
589 | break; |
590 | case DVBFE_ALGO_SW: | |
591 | dprintk("%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__); | |
70d90635 | 592 | dvb_frontend_swzigzag(fe); |
c59e7870 MA |
593 | break; |
594 | case DVBFE_ALGO_CUSTOM: | |
595 | params = NULL; /* have we been asked to RETUNE ? */ | |
596 | dprintk("%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state); | |
597 | if (fepriv->state & FESTATE_RETUNE) { | |
598 | dprintk("%s: Retune requested, FESTAT_RETUNE\n", __func__); | |
f04c3ca8 | 599 | params = &fepriv->parameters; |
c59e7870 MA |
600 | fepriv->state = FESTATE_TUNED; |
601 | } | |
602 | /* Case where we are going to search for a carrier | |
603 | * User asked us to retune again for some reason, possibly | |
604 | * requesting a search with a new set of parameters | |
605 | */ | |
606 | if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) { | |
7bcbdf38 | 607 | if (fe->ops.search) { |
c59e7870 MA |
608 | fepriv->algo_status = fe->ops.search(fe, &fepriv->parameters); |
609 | /* We did do a search as was requested, the flags are | |
610 | * now unset as well and has the flags wrt to search. | |
611 | */ | |
7bcbdf38 AJ |
612 | } else { |
613 | fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN; | |
614 | } | |
c59e7870 MA |
615 | } |
616 | /* Track the carrier if the search was successful */ | |
617 | if (fepriv->algo_status == DVBFE_ALGO_SEARCH_SUCCESS) { | |
c59e7870 MA |
618 | if (fe->ops.track) |
619 | fe->ops.track(fe, &fepriv->parameters); | |
7bcbdf38 AJ |
620 | } else { |
621 | fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN; | |
622 | fepriv->delay = HZ / 2; | |
623 | } | |
624 | fe->ops.read_status(fe, &s); | |
625 | if (s != fepriv->status) { | |
626 | dvb_frontend_add_event(fe, s); /* update event list */ | |
627 | fepriv->status = s; | |
628 | if (!(s & FE_HAS_LOCK)) { | |
629 | fepriv->delay = HZ / 10; | |
630 | fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN; | |
631 | } else { | |
632 | fepriv->delay = 60 * HZ; | |
633 | } | |
c59e7870 MA |
634 | } |
635 | break; | |
636 | default: | |
637 | dprintk("%s: UNDEFINED ALGO !\n", __func__); | |
638 | break; | |
639 | } | |
640 | } else { | |
4a4edcca | 641 | dvb_frontend_swzigzag(fe); |
c59e7870 | 642 | } |
1da177e4 LT |
643 | } |
644 | ||
608f62d6 OE |
645 | if (dvb_powerdown_on_sleep) { |
646 | if (fe->ops.set_voltage) | |
647 | fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF); | |
dea74869 | 648 | if (fe->ops.tuner_ops.sleep) { |
41286d97 DH |
649 | if (fe->ops.i2c_gate_ctrl) |
650 | fe->ops.i2c_gate_ctrl(fe, 1); | |
dea74869 PB |
651 | fe->ops.tuner_ops.sleep(fe); |
652 | if (fe->ops.i2c_gate_ctrl) | |
653 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7eef5dd6 | 654 | } |
dea74869 PB |
655 | if (fe->ops.sleep) |
656 | fe->ops.sleep(fe); | |
1da177e4 LT |
657 | } |
658 | ||
8eec1429 | 659 | fepriv->thread = NULL; |
a5beb7b3 | 660 | fepriv->exit = 0; |
1da177e4 LT |
661 | mb(); |
662 | ||
663 | dvb_frontend_wakeup(fe); | |
664 | return 0; | |
665 | } | |
666 | ||
667 | static void dvb_frontend_stop(struct dvb_frontend *fe) | |
668 | { | |
0c53c70f | 669 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 | 670 | |
46b4f7c1 | 671 | dprintk ("%s\n", __func__); |
1da177e4 LT |
672 | |
673 | fepriv->exit = 1; | |
674 | mb(); | |
675 | ||
8eec1429 | 676 | if (!fepriv->thread) |
1da177e4 LT |
677 | return; |
678 | ||
8eec1429 | 679 | kthread_stop(fepriv->thread); |
ca5be9cd | 680 | |
8eec1429 | 681 | init_MUTEX (&fepriv->sem); |
1da177e4 LT |
682 | fepriv->state = FESTATE_IDLE; |
683 | ||
684 | /* paranoia check in case a signal arrived */ | |
8eec1429 HP |
685 | if (fepriv->thread) |
686 | printk("dvb_frontend_stop: warning: thread %p won't exit\n", | |
687 | fepriv->thread); | |
1da177e4 LT |
688 | } |
689 | ||
83b75b04 N |
690 | s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime) |
691 | { | |
692 | return ((curtime.tv_usec < lasttime.tv_usec) ? | |
693 | 1000000 - lasttime.tv_usec + curtime.tv_usec : | |
694 | curtime.tv_usec - lasttime.tv_usec); | |
695 | } | |
696 | EXPORT_SYMBOL(timeval_usec_diff); | |
697 | ||
698 | static inline void timeval_usec_add(struct timeval *curtime, u32 add_usec) | |
699 | { | |
700 | curtime->tv_usec += add_usec; | |
701 | if (curtime->tv_usec >= 1000000) { | |
702 | curtime->tv_usec -= 1000000; | |
703 | curtime->tv_sec++; | |
704 | } | |
705 | } | |
706 | ||
707 | /* | |
708 | * Sleep until gettimeofday() > waketime + add_usec | |
709 | * This needs to be as precise as possible, but as the delay is | |
710 | * usually between 2ms and 32ms, it is done using a scheduled msleep | |
711 | * followed by usleep (normally a busy-wait loop) for the remainder | |
712 | */ | |
713 | void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec) | |
714 | { | |
715 | struct timeval lasttime; | |
716 | s32 delta, newdelta; | |
717 | ||
718 | timeval_usec_add(waketime, add_usec); | |
719 | ||
720 | do_gettimeofday(&lasttime); | |
721 | delta = timeval_usec_diff(lasttime, *waketime); | |
722 | if (delta > 2500) { | |
723 | msleep((delta - 1500) / 1000); | |
724 | do_gettimeofday(&lasttime); | |
725 | newdelta = timeval_usec_diff(lasttime, *waketime); | |
726 | delta = (newdelta > delta) ? 0 : newdelta; | |
727 | } | |
728 | if (delta > 0) | |
729 | udelay(delta); | |
730 | } | |
731 | EXPORT_SYMBOL(dvb_frontend_sleep_until); | |
732 | ||
1da177e4 LT |
733 | static int dvb_frontend_start(struct dvb_frontend *fe) |
734 | { | |
735 | int ret; | |
0c53c70f | 736 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
8eec1429 | 737 | struct task_struct *fe_thread; |
1da177e4 | 738 | |
46b4f7c1 | 739 | dprintk ("%s\n", __func__); |
1da177e4 | 740 | |
8eec1429 | 741 | if (fepriv->thread) { |
1da177e4 LT |
742 | if (!fepriv->exit) |
743 | return 0; | |
744 | else | |
745 | dvb_frontend_stop (fe); | |
746 | } | |
747 | ||
748 | if (signal_pending(current)) | |
749 | return -EINTR; | |
750 | if (down_interruptible (&fepriv->sem)) | |
751 | return -EINTR; | |
752 | ||
753 | fepriv->state = FESTATE_IDLE; | |
754 | fepriv->exit = 0; | |
8eec1429 | 755 | fepriv->thread = NULL; |
1da177e4 LT |
756 | mb(); |
757 | ||
8eec1429 | 758 | fe_thread = kthread_run(dvb_frontend_thread, fe, |
363c35fc | 759 | "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id); |
8eec1429 HP |
760 | if (IS_ERR(fe_thread)) { |
761 | ret = PTR_ERR(fe_thread); | |
762 | printk("dvb_frontend_start: failed to start kthread (%d)\n", ret); | |
1da177e4 LT |
763 | up(&fepriv->sem); |
764 | return ret; | |
765 | } | |
8eec1429 | 766 | fepriv->thread = fe_thread; |
1da177e4 LT |
767 | return 0; |
768 | } | |
769 | ||
c471b331 OE |
770 | static void dvb_frontend_get_frequeny_limits(struct dvb_frontend *fe, |
771 | u32 *freq_min, u32 *freq_max) | |
772 | { | |
773 | *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min); | |
774 | ||
775 | if (fe->ops.info.frequency_max == 0) | |
776 | *freq_max = fe->ops.tuner_ops.info.frequency_max; | |
777 | else if (fe->ops.tuner_ops.info.frequency_max == 0) | |
778 | *freq_max = fe->ops.info.frequency_max; | |
779 | else | |
780 | *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max); | |
781 | ||
782 | if (*freq_min == 0 || *freq_max == 0) | |
363c35fc ST |
783 | printk(KERN_WARNING "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n", |
784 | fe->dvb->num,fe->id); | |
c471b331 OE |
785 | } |
786 | ||
1fab46f0 OE |
787 | static int dvb_frontend_check_parameters(struct dvb_frontend *fe, |
788 | struct dvb_frontend_parameters *parms) | |
789 | { | |
c471b331 OE |
790 | u32 freq_min; |
791 | u32 freq_max; | |
792 | ||
1fab46f0 | 793 | /* range check: frequency */ |
c471b331 OE |
794 | dvb_frontend_get_frequeny_limits(fe, &freq_min, &freq_max); |
795 | if ((freq_min && parms->frequency < freq_min) || | |
796 | (freq_max && parms->frequency > freq_max)) { | |
363c35fc ST |
797 | printk(KERN_WARNING "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n", |
798 | fe->dvb->num, fe->id, parms->frequency, freq_min, freq_max); | |
1fab46f0 OE |
799 | return -EINVAL; |
800 | } | |
801 | ||
802 | /* range check: symbol rate */ | |
803 | if (fe->ops.info.type == FE_QPSK) { | |
804 | if ((fe->ops.info.symbol_rate_min && | |
805 | parms->u.qpsk.symbol_rate < fe->ops.info.symbol_rate_min) || | |
806 | (fe->ops.info.symbol_rate_max && | |
807 | parms->u.qpsk.symbol_rate > fe->ops.info.symbol_rate_max)) { | |
363c35fc ST |
808 | printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n", |
809 | fe->dvb->num, fe->id, parms->u.qpsk.symbol_rate, | |
1fab46f0 OE |
810 | fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max); |
811 | return -EINVAL; | |
812 | } | |
813 | ||
814 | } else if (fe->ops.info.type == FE_QAM) { | |
815 | if ((fe->ops.info.symbol_rate_min && | |
816 | parms->u.qam.symbol_rate < fe->ops.info.symbol_rate_min) || | |
817 | (fe->ops.info.symbol_rate_max && | |
818 | parms->u.qam.symbol_rate > fe->ops.info.symbol_rate_max)) { | |
363c35fc ST |
819 | printk(KERN_WARNING "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n", |
820 | fe->dvb->num, fe->id, parms->u.qam.symbol_rate, | |
1fab46f0 OE |
821 | fe->ops.info.symbol_rate_min, fe->ops.info.symbol_rate_max); |
822 | return -EINVAL; | |
823 | } | |
824 | } | |
825 | ||
826 | return 0; | |
827 | } | |
828 | ||
072ce0c5 | 829 | static struct dtv_cmds_h dtv_cmds[] = { |
e7fee0f3 ST |
830 | [DTV_TUNE] = { |
831 | .name = "DTV_TUNE", | |
832 | .cmd = DTV_TUNE, | |
6b73eeaf ST |
833 | .set = 1, |
834 | }, | |
e7fee0f3 ST |
835 | [DTV_CLEAR] = { |
836 | .name = "DTV_CLEAR", | |
837 | .cmd = DTV_CLEAR, | |
6b73eeaf ST |
838 | .set = 1, |
839 | }, | |
840 | ||
841 | /* Set */ | |
363429a0 ST |
842 | [DTV_FREQUENCY] = { |
843 | .name = "DTV_FREQUENCY", | |
844 | .cmd = DTV_FREQUENCY, | |
6b73eeaf ST |
845 | .set = 1, |
846 | }, | |
75b7f943 ST |
847 | [DTV_BANDWIDTH_HZ] = { |
848 | .name = "DTV_BANDWIDTH_HZ", | |
849 | .cmd = DTV_BANDWIDTH_HZ, | |
6b73eeaf ST |
850 | .set = 1, |
851 | }, | |
363429a0 ST |
852 | [DTV_MODULATION] = { |
853 | .name = "DTV_MODULATION", | |
854 | .cmd = DTV_MODULATION, | |
6b73eeaf ST |
855 | .set = 1, |
856 | }, | |
363429a0 ST |
857 | [DTV_INVERSION] = { |
858 | .name = "DTV_INVERSION", | |
859 | .cmd = DTV_INVERSION, | |
6b73eeaf ST |
860 | .set = 1, |
861 | }, | |
363429a0 ST |
862 | [DTV_DISEQC_MASTER] = { |
863 | .name = "DTV_DISEQC_MASTER", | |
864 | .cmd = DTV_DISEQC_MASTER, | |
6b73eeaf ST |
865 | .set = 1, |
866 | .buffer = 1, | |
867 | }, | |
363429a0 ST |
868 | [DTV_SYMBOL_RATE] = { |
869 | .name = "DTV_SYMBOL_RATE", | |
870 | .cmd = DTV_SYMBOL_RATE, | |
6b73eeaf ST |
871 | .set = 1, |
872 | }, | |
363429a0 ST |
873 | [DTV_INNER_FEC] = { |
874 | .name = "DTV_INNER_FEC", | |
875 | .cmd = DTV_INNER_FEC, | |
6b73eeaf ST |
876 | .set = 1, |
877 | }, | |
363429a0 ST |
878 | [DTV_VOLTAGE] = { |
879 | .name = "DTV_VOLTAGE", | |
880 | .cmd = DTV_VOLTAGE, | |
6b73eeaf ST |
881 | .set = 1, |
882 | }, | |
363429a0 ST |
883 | [DTV_TONE] = { |
884 | .name = "DTV_TONE", | |
885 | .cmd = DTV_TONE, | |
6b73eeaf ST |
886 | .set = 1, |
887 | }, | |
363429a0 ST |
888 | [DTV_PILOT] = { |
889 | .name = "DTV_PILOT", | |
890 | .cmd = DTV_PILOT, | |
6b73eeaf ST |
891 | .set = 1, |
892 | }, | |
363429a0 ST |
893 | [DTV_ROLLOFF] = { |
894 | .name = "DTV_ROLLOFF", | |
895 | .cmd = DTV_ROLLOFF, | |
6b73eeaf ST |
896 | .set = 1, |
897 | }, | |
363429a0 ST |
898 | [DTV_DELIVERY_SYSTEM] = { |
899 | .name = "DTV_DELIVERY_SYSTEM", | |
900 | .cmd = DTV_DELIVERY_SYSTEM, | |
6b73eeaf ST |
901 | .set = 1, |
902 | }, | |
ef526f42 ST |
903 | [DTV_HIERARCHY] = { |
904 | .name = "DTV_HIERARCHY", | |
905 | .cmd = DTV_HIERARCHY, | |
906 | .set = 1, | |
907 | }, | |
a4de91be ST |
908 | [DTV_CODE_RATE_HP] = { |
909 | .name = "DTV_CODE_RATE_HP", | |
910 | .cmd = DTV_CODE_RATE_HP, | |
911 | .set = 1, | |
912 | }, | |
913 | [DTV_CODE_RATE_LP] = { | |
914 | .name = "DTV_CODE_RATE_LP", | |
915 | .cmd = DTV_CODE_RATE_LP, | |
916 | .set = 1, | |
917 | }, | |
b87625f0 ST |
918 | [DTV_GUARD_INTERVAL] = { |
919 | .name = "DTV_GUARD_INTERVAL", | |
920 | .cmd = DTV_GUARD_INTERVAL, | |
921 | .set = 1, | |
922 | }, | |
923 | [DTV_TRANSMISSION_MODE] = { | |
924 | .name = "DTV_TRANSMISSION_MODE", | |
925 | .cmd = DTV_TRANSMISSION_MODE, | |
926 | .set = 1, | |
927 | }, | |
6b73eeaf | 928 | /* Get */ |
363429a0 ST |
929 | [DTV_DISEQC_SLAVE_REPLY] = { |
930 | .name = "DTV_DISEQC_SLAVE_REPLY", | |
931 | .cmd = DTV_DISEQC_SLAVE_REPLY, | |
6b73eeaf ST |
932 | .set = 0, |
933 | .buffer = 1, | |
934 | }, | |
eacf8d8d ST |
935 | [DTV_API_VERSION] = { |
936 | .name = "DTV_API_VERSION", | |
937 | .cmd = DTV_API_VERSION, | |
938 | .set = 0, | |
939 | }, | |
a4de91be ST |
940 | [DTV_CODE_RATE_HP] = { |
941 | .name = "DTV_CODE_RATE_HP", | |
942 | .cmd = DTV_CODE_RATE_HP, | |
943 | .set = 0, | |
944 | }, | |
945 | [DTV_CODE_RATE_LP] = { | |
946 | .name = "DTV_CODE_RATE_LP", | |
947 | .cmd = DTV_CODE_RATE_LP, | |
948 | .set = 0, | |
949 | }, | |
b87625f0 ST |
950 | [DTV_GUARD_INTERVAL] = { |
951 | .name = "DTV_GUARD_INTERVAL", | |
952 | .cmd = DTV_GUARD_INTERVAL, | |
953 | .set = 0, | |
954 | }, | |
955 | [DTV_TRANSMISSION_MODE] = { | |
956 | .name = "DTV_TRANSMISSION_MODE", | |
957 | .cmd = DTV_TRANSMISSION_MODE, | |
958 | .set = 0, | |
959 | }, | |
ef526f42 ST |
960 | [DTV_HIERARCHY] = { |
961 | .name = "DTV_HIERARCHY", | |
962 | .cmd = DTV_HIERARCHY, | |
963 | .set = 0, | |
964 | }, | |
6b73eeaf ST |
965 | }; |
966 | ||
072ce0c5 | 967 | static void dtv_property_dump(struct dtv_property *tvp) |
6b73eeaf ST |
968 | { |
969 | int i; | |
970 | ||
82d7669d | 971 | if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) { |
a1bc84c0 | 972 | printk(KERN_WARNING "%s: tvp.cmd = 0x%08x undefined\n", |
4aae8efb DB |
973 | __func__, tvp->cmd); |
974 | return; | |
975 | } | |
976 | ||
a1bc84c0 ST |
977 | dprintk("%s() tvp.cmd = 0x%08x (%s)\n" |
978 | ,__func__ | |
6b73eeaf | 979 | ,tvp->cmd |
56f0680a | 980 | ,dtv_cmds[ tvp->cmd ].name); |
6b73eeaf | 981 | |
56f0680a | 982 | if(dtv_cmds[ tvp->cmd ].buffer) { |
6b73eeaf | 983 | |
a1bc84c0 ST |
984 | dprintk("%s() tvp.u.buffer.len = 0x%02x\n" |
985 | ,__func__ | |
6b73eeaf ST |
986 | ,tvp->u.buffer.len); |
987 | ||
988 | for(i = 0; i < tvp->u.buffer.len; i++) | |
a1bc84c0 ST |
989 | dprintk("%s() tvp.u.buffer.data[0x%02x] = 0x%02x\n" |
990 | ,__func__ | |
6b73eeaf ST |
991 | ,i |
992 | ,tvp->u.buffer.data[i]); | |
993 | ||
994 | } else | |
a1bc84c0 | 995 | dprintk("%s() tvp.u.data = 0x%08x\n", __func__, tvp->u.data); |
6b73eeaf ST |
996 | } |
997 | ||
072ce0c5 | 998 | static int is_legacy_delivery_system(fe_delivery_system_t s) |
6b73eeaf ST |
999 | { |
1000 | if((s == SYS_UNDEFINED) || (s == SYS_DVBC_ANNEX_AC) || | |
3fa37deb DH |
1001 | (s == SYS_DVBC_ANNEX_B) || (s == SYS_DVBT) || (s == SYS_DVBS) || |
1002 | (s == SYS_ATSC)) | |
6b73eeaf ST |
1003 | return 1; |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
ee33c525 ST |
1008 | /* Synchronise the legacy tuning parameters into the cache, so that demodulator |
1009 | * drivers can use a single set_frontend tuning function, regardless of whether | |
1010 | * it's being used for the legacy or new API, reducing code and complexity. | |
1011 | */ | |
072ce0c5 MCC |
1012 | static void dtv_property_cache_sync(struct dvb_frontend *fe, |
1013 | struct dvb_frontend_parameters *p) | |
ee33c525 ST |
1014 | { |
1015 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
1016 | ||
1017 | c->frequency = p->frequency; | |
1018 | c->inversion = p->inversion; | |
1019 | ||
1020 | switch (fe->ops.info.type) { | |
1021 | case FE_QPSK: | |
e5cefa82 DB |
1022 | c->modulation = QPSK; /* implied for DVB-S in legacy API */ |
1023 | c->rolloff = ROLLOFF_35;/* implied for DVB-S */ | |
ee33c525 ST |
1024 | c->symbol_rate = p->u.qpsk.symbol_rate; |
1025 | c->fec_inner = p->u.qpsk.fec_inner; | |
80a773c9 | 1026 | c->delivery_system = SYS_DVBS; |
ee33c525 ST |
1027 | break; |
1028 | case FE_QAM: | |
1029 | c->symbol_rate = p->u.qam.symbol_rate; | |
1030 | c->fec_inner = p->u.qam.fec_inner; | |
1031 | c->modulation = p->u.qam.modulation; | |
80a773c9 | 1032 | c->delivery_system = SYS_DVBC_ANNEX_AC; |
ee33c525 ST |
1033 | break; |
1034 | case FE_OFDM: | |
75b7f943 ST |
1035 | if (p->u.ofdm.bandwidth == BANDWIDTH_6_MHZ) |
1036 | c->bandwidth_hz = 6000000; | |
1037 | else if (p->u.ofdm.bandwidth == BANDWIDTH_7_MHZ) | |
1038 | c->bandwidth_hz = 7000000; | |
1039 | else if (p->u.ofdm.bandwidth == BANDWIDTH_8_MHZ) | |
1040 | c->bandwidth_hz = 8000000; | |
1041 | else | |
1042 | /* Including BANDWIDTH_AUTO */ | |
1043 | c->bandwidth_hz = 0; | |
ee33c525 ST |
1044 | c->code_rate_HP = p->u.ofdm.code_rate_HP; |
1045 | c->code_rate_LP = p->u.ofdm.code_rate_LP; | |
1046 | c->modulation = p->u.ofdm.constellation; | |
1047 | c->transmission_mode = p->u.ofdm.transmission_mode; | |
1048 | c->guard_interval = p->u.ofdm.guard_interval; | |
1049 | c->hierarchy = p->u.ofdm.hierarchy_information; | |
80a773c9 | 1050 | c->delivery_system = SYS_DVBT; |
ee33c525 ST |
1051 | break; |
1052 | case FE_ATSC: | |
1053 | c->modulation = p->u.vsb.modulation; | |
80a773c9 ST |
1054 | if ((c->modulation == VSB_8) || (c->modulation == VSB_16)) |
1055 | c->delivery_system = SYS_ATSC; | |
1056 | else | |
1057 | c->delivery_system = SYS_DVBC_ANNEX_B; | |
ee33c525 ST |
1058 | break; |
1059 | } | |
1060 | } | |
1061 | ||
d5748f10 ST |
1062 | /* Ensure the cached values are set correctly in the frontend |
1063 | * legacy tuning structures, for the advanced tuning API. | |
1064 | */ | |
072ce0c5 | 1065 | static void dtv_property_legacy_params_sync(struct dvb_frontend *fe) |
6b73eeaf | 1066 | { |
d5748f10 ST |
1067 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
1068 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
1069 | struct dvb_frontend_parameters *p = &fepriv->parameters; | |
6b73eeaf | 1070 | |
d5748f10 ST |
1071 | p->frequency = c->frequency; |
1072 | p->inversion = c->inversion; | |
6b73eeaf | 1073 | |
d5748f10 ST |
1074 | switch (fe->ops.info.type) { |
1075 | case FE_QPSK: | |
a1bc84c0 | 1076 | dprintk("%s() Preparing QPSK req\n", __func__); |
d5748f10 ST |
1077 | p->u.qpsk.symbol_rate = c->symbol_rate; |
1078 | p->u.qpsk.fec_inner = c->fec_inner; | |
80a773c9 | 1079 | c->delivery_system = SYS_DVBS; |
d5748f10 ST |
1080 | break; |
1081 | case FE_QAM: | |
a1bc84c0 | 1082 | dprintk("%s() Preparing QAM req\n", __func__); |
d5748f10 ST |
1083 | p->u.qam.symbol_rate = c->symbol_rate; |
1084 | p->u.qam.fec_inner = c->fec_inner; | |
1085 | p->u.qam.modulation = c->modulation; | |
80a773c9 | 1086 | c->delivery_system = SYS_DVBC_ANNEX_AC; |
d5748f10 ST |
1087 | break; |
1088 | case FE_OFDM: | |
a1bc84c0 | 1089 | dprintk("%s() Preparing OFDM req\n", __func__); |
75b7f943 ST |
1090 | if (c->bandwidth_hz == 6000000) |
1091 | p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ; | |
1092 | else if (c->bandwidth_hz == 7000000) | |
1093 | p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ; | |
1094 | else if (c->bandwidth_hz == 8000000) | |
1095 | p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ; | |
1096 | else | |
1097 | p->u.ofdm.bandwidth = BANDWIDTH_AUTO; | |
d5748f10 ST |
1098 | p->u.ofdm.code_rate_HP = c->code_rate_HP; |
1099 | p->u.ofdm.code_rate_LP = c->code_rate_LP; | |
1100 | p->u.ofdm.constellation = c->modulation; | |
1101 | p->u.ofdm.transmission_mode = c->transmission_mode; | |
1102 | p->u.ofdm.guard_interval = c->guard_interval; | |
1103 | p->u.ofdm.hierarchy_information = c->hierarchy; | |
80a773c9 | 1104 | c->delivery_system = SYS_DVBT; |
d5748f10 ST |
1105 | break; |
1106 | case FE_ATSC: | |
a1bc84c0 | 1107 | dprintk("%s() Preparing VSB req\n", __func__); |
d5748f10 | 1108 | p->u.vsb.modulation = c->modulation; |
80a773c9 ST |
1109 | if ((c->modulation == VSB_8) || (c->modulation == VSB_16)) |
1110 | c->delivery_system = SYS_ATSC; | |
1111 | else | |
1112 | c->delivery_system = SYS_DVBC_ANNEX_B; | |
d5748f10 ST |
1113 | break; |
1114 | } | |
1115 | } | |
1116 | ||
1117 | /* Ensure the cached values are set correctly in the frontend | |
1118 | * legacy tuning structures, for the legacy tuning API. | |
1119 | */ | |
072ce0c5 | 1120 | static void dtv_property_adv_params_sync(struct dvb_frontend *fe) |
d5748f10 | 1121 | { |
56f0680a | 1122 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
6b73eeaf | 1123 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
d5748f10 | 1124 | struct dvb_frontend_parameters *p = &fepriv->parameters; |
6b73eeaf | 1125 | |
d5748f10 ST |
1126 | p->frequency = c->frequency; |
1127 | p->inversion = c->inversion; | |
1128 | ||
1129 | switch(c->modulation) { | |
0a6393ae ST |
1130 | case PSK_8: |
1131 | case APSK_16: | |
97854829 | 1132 | case APSK_32: |
0a6393ae | 1133 | case QPSK: |
d5748f10 ST |
1134 | p->u.qpsk.symbol_rate = c->symbol_rate; |
1135 | p->u.qpsk.fec_inner = c->fec_inner; | |
1136 | break; | |
1137 | default: | |
1138 | break; | |
1139 | } | |
1140 | ||
1141 | if(c->delivery_system == SYS_ISDBT) { | |
1142 | /* Fake out a generic DVB-T request so we pass validation in the ioctl */ | |
1143 | p->frequency = c->frequency; | |
1144 | p->inversion = INVERSION_AUTO; | |
1145 | p->u.ofdm.constellation = QAM_AUTO; | |
1146 | p->u.ofdm.code_rate_HP = FEC_AUTO; | |
1147 | p->u.ofdm.code_rate_LP = FEC_AUTO; | |
1148 | p->u.ofdm.bandwidth = BANDWIDTH_AUTO; | |
1149 | p->u.ofdm.transmission_mode = TRANSMISSION_MODE_AUTO; | |
1150 | p->u.ofdm.guard_interval = GUARD_INTERVAL_AUTO; | |
1151 | p->u.ofdm.hierarchy_information = HIERARCHY_AUTO; | |
1152 | } | |
1153 | } | |
1154 | ||
072ce0c5 | 1155 | static void dtv_property_cache_submit(struct dvb_frontend *fe) |
d5748f10 ST |
1156 | { |
1157 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
1158 | ||
d5748f10 ST |
1159 | /* For legacy delivery systems we don't need the delivery_system to |
1160 | * be specified, but we populate the older structures from the cache | |
1161 | * so we can call set_frontend on older drivers. | |
1162 | */ | |
6b73eeaf | 1163 | if(is_legacy_delivery_system(c->delivery_system)) { |
6b73eeaf | 1164 | |
a1bc84c0 | 1165 | dprintk("%s() legacy, modulation = %d\n", __func__, c->modulation); |
d5748f10 | 1166 | dtv_property_legacy_params_sync(fe); |
6b73eeaf | 1167 | |
6b73eeaf | 1168 | } else { |
a1bc84c0 | 1169 | dprintk("%s() adv, modulation = %d\n", __func__, c->modulation); |
d5748f10 | 1170 | |
6b73eeaf ST |
1171 | /* For advanced delivery systems / modulation types ... |
1172 | * we seed the lecacy dvb_frontend_parameters structure | |
1173 | * so that the sanity checking code later in the IOCTL processing | |
1174 | * can validate our basic frequency ranges, symbolrates, modulation | |
1175 | * etc. | |
1176 | */ | |
d5748f10 | 1177 | dtv_property_adv_params_sync(fe); |
6b73eeaf | 1178 | } |
6b73eeaf ST |
1179 | } |
1180 | ||
13c97bf5 ST |
1181 | static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file, |
1182 | unsigned int cmd, void *parg); | |
1183 | static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file, | |
1184 | unsigned int cmd, void *parg); | |
1185 | ||
072ce0c5 MCC |
1186 | static int dtv_property_process_get(struct dvb_frontend *fe, |
1187 | struct dtv_property *tvp, | |
1188 | struct inode *inode, struct file *file) | |
363429a0 ST |
1189 | { |
1190 | int r = 0; | |
1191 | ||
363429a0 ST |
1192 | dtv_property_dump(tvp); |
1193 | ||
bfbf2dae ST |
1194 | /* Allow the frontend to validate incoming properties */ |
1195 | if (fe->ops.get_property) | |
1196 | r = fe->ops.get_property(fe, tvp); | |
1197 | ||
1198 | if (r < 0) | |
1199 | return r; | |
1200 | ||
363429a0 ST |
1201 | switch(tvp->cmd) { |
1202 | case DTV_FREQUENCY: | |
1203 | tvp->u.data = fe->dtv_property_cache.frequency; | |
1204 | break; | |
1205 | case DTV_MODULATION: | |
1206 | tvp->u.data = fe->dtv_property_cache.modulation; | |
1207 | break; | |
75b7f943 ST |
1208 | case DTV_BANDWIDTH_HZ: |
1209 | tvp->u.data = fe->dtv_property_cache.bandwidth_hz; | |
363429a0 ST |
1210 | break; |
1211 | case DTV_INVERSION: | |
1212 | tvp->u.data = fe->dtv_property_cache.inversion; | |
1213 | break; | |
1214 | case DTV_SYMBOL_RATE: | |
1215 | tvp->u.data = fe->dtv_property_cache.symbol_rate; | |
1216 | break; | |
1217 | case DTV_INNER_FEC: | |
1218 | tvp->u.data = fe->dtv_property_cache.fec_inner; | |
1219 | break; | |
1220 | case DTV_PILOT: | |
1221 | tvp->u.data = fe->dtv_property_cache.pilot; | |
1222 | break; | |
1223 | case DTV_ROLLOFF: | |
1224 | tvp->u.data = fe->dtv_property_cache.rolloff; | |
1225 | break; | |
1226 | case DTV_DELIVERY_SYSTEM: | |
1227 | tvp->u.data = fe->dtv_property_cache.delivery_system; | |
1228 | break; | |
363429a0 ST |
1229 | case DTV_VOLTAGE: |
1230 | tvp->u.data = fe->dtv_property_cache.voltage; | |
1231 | break; | |
1232 | case DTV_TONE: | |
1233 | tvp->u.data = fe->dtv_property_cache.sectone; | |
1234 | break; | |
eacf8d8d ST |
1235 | case DTV_API_VERSION: |
1236 | tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR; | |
1237 | break; | |
a4de91be ST |
1238 | case DTV_CODE_RATE_HP: |
1239 | tvp->u.data = fe->dtv_property_cache.code_rate_HP; | |
1240 | break; | |
1241 | case DTV_CODE_RATE_LP: | |
1242 | tvp->u.data = fe->dtv_property_cache.code_rate_LP; | |
1243 | break; | |
b87625f0 ST |
1244 | case DTV_GUARD_INTERVAL: |
1245 | tvp->u.data = fe->dtv_property_cache.guard_interval; | |
1246 | break; | |
1247 | case DTV_TRANSMISSION_MODE: | |
1248 | tvp->u.data = fe->dtv_property_cache.transmission_mode; | |
1249 | break; | |
ef526f42 ST |
1250 | case DTV_HIERARCHY: |
1251 | tvp->u.data = fe->dtv_property_cache.hierarchy; | |
1252 | break; | |
363429a0 ST |
1253 | default: |
1254 | r = -1; | |
1255 | } | |
1256 | ||
1257 | return r; | |
1258 | } | |
1259 | ||
072ce0c5 MCC |
1260 | static int dtv_property_process_set(struct dvb_frontend *fe, |
1261 | struct dtv_property *tvp, | |
1262 | struct inode *inode, | |
1263 | struct file *file) | |
6b73eeaf ST |
1264 | { |
1265 | int r = 0; | |
13c97bf5 | 1266 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
56f0680a | 1267 | dtv_property_dump(tvp); |
6b73eeaf | 1268 | |
bfbf2dae ST |
1269 | /* Allow the frontend to validate incoming properties */ |
1270 | if (fe->ops.set_property) | |
1271 | r = fe->ops.set_property(fe, tvp); | |
1272 | ||
1273 | if (r < 0) | |
1274 | return r; | |
1275 | ||
6b73eeaf | 1276 | switch(tvp->cmd) { |
e7fee0f3 | 1277 | case DTV_CLEAR: |
6b73eeaf ST |
1278 | /* Reset a cache of data specific to the frontend here. This does |
1279 | * not effect hardware. | |
1280 | */ | |
a1bc84c0 | 1281 | dprintk("%s() Flushing property cache\n", __func__); |
56f0680a | 1282 | memset(&fe->dtv_property_cache, 0, sizeof(struct dtv_frontend_properties)); |
e7fee0f3 | 1283 | fe->dtv_property_cache.state = tvp->cmd; |
56f0680a | 1284 | fe->dtv_property_cache.delivery_system = SYS_UNDEFINED; |
6b73eeaf | 1285 | break; |
e7fee0f3 | 1286 | case DTV_TUNE: |
6b73eeaf | 1287 | /* interpret the cache of data, build either a traditional frontend |
d5748f10 ST |
1288 | * tunerequest so we can pass validation in the FE_SET_FRONTEND |
1289 | * ioctl. | |
6b73eeaf | 1290 | */ |
e7fee0f3 | 1291 | fe->dtv_property_cache.state = tvp->cmd; |
a1bc84c0 | 1292 | dprintk("%s() Finalised property cache\n", __func__); |
d5748f10 ST |
1293 | dtv_property_cache_submit(fe); |
1294 | ||
13c97bf5 ST |
1295 | r |= dvb_frontend_ioctl_legacy(inode, file, FE_SET_FRONTEND, |
1296 | &fepriv->parameters); | |
6b73eeaf | 1297 | break; |
363429a0 | 1298 | case DTV_FREQUENCY: |
56f0680a | 1299 | fe->dtv_property_cache.frequency = tvp->u.data; |
6b73eeaf | 1300 | break; |
363429a0 | 1301 | case DTV_MODULATION: |
56f0680a | 1302 | fe->dtv_property_cache.modulation = tvp->u.data; |
6b73eeaf | 1303 | break; |
75b7f943 ST |
1304 | case DTV_BANDWIDTH_HZ: |
1305 | fe->dtv_property_cache.bandwidth_hz = tvp->u.data; | |
6b73eeaf | 1306 | break; |
363429a0 | 1307 | case DTV_INVERSION: |
56f0680a | 1308 | fe->dtv_property_cache.inversion = tvp->u.data; |
6b73eeaf | 1309 | break; |
363429a0 | 1310 | case DTV_SYMBOL_RATE: |
56f0680a | 1311 | fe->dtv_property_cache.symbol_rate = tvp->u.data; |
6b73eeaf | 1312 | break; |
363429a0 | 1313 | case DTV_INNER_FEC: |
56f0680a | 1314 | fe->dtv_property_cache.fec_inner = tvp->u.data; |
6b73eeaf | 1315 | break; |
363429a0 | 1316 | case DTV_PILOT: |
56f0680a | 1317 | fe->dtv_property_cache.pilot = tvp->u.data; |
6b73eeaf | 1318 | break; |
363429a0 | 1319 | case DTV_ROLLOFF: |
56f0680a | 1320 | fe->dtv_property_cache.rolloff = tvp->u.data; |
6b73eeaf | 1321 | break; |
363429a0 | 1322 | case DTV_DELIVERY_SYSTEM: |
56f0680a | 1323 | fe->dtv_property_cache.delivery_system = tvp->u.data; |
6b73eeaf | 1324 | break; |
363429a0 | 1325 | case DTV_VOLTAGE: |
56f0680a | 1326 | fe->dtv_property_cache.voltage = tvp->u.data; |
13c97bf5 | 1327 | r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_VOLTAGE, |
56f0680a | 1328 | (void *)fe->dtv_property_cache.voltage); |
13c97bf5 | 1329 | break; |
363429a0 | 1330 | case DTV_TONE: |
56f0680a | 1331 | fe->dtv_property_cache.sectone = tvp->u.data; |
13c97bf5 | 1332 | r = dvb_frontend_ioctl_legacy(inode, file, FE_SET_TONE, |
56f0680a | 1333 | (void *)fe->dtv_property_cache.sectone); |
13c97bf5 | 1334 | break; |
a4de91be ST |
1335 | case DTV_CODE_RATE_HP: |
1336 | fe->dtv_property_cache.code_rate_HP = tvp->u.data; | |
1337 | break; | |
1338 | case DTV_CODE_RATE_LP: | |
1339 | fe->dtv_property_cache.code_rate_LP = tvp->u.data; | |
1340 | break; | |
b87625f0 ST |
1341 | case DTV_GUARD_INTERVAL: |
1342 | fe->dtv_property_cache.guard_interval = tvp->u.data; | |
1343 | break; | |
1344 | case DTV_TRANSMISSION_MODE: | |
1345 | fe->dtv_property_cache.transmission_mode = tvp->u.data; | |
1346 | break; | |
ef526f42 ST |
1347 | case DTV_HIERARCHY: |
1348 | fe->dtv_property_cache.hierarchy = tvp->u.data; | |
1349 | break; | |
363429a0 ST |
1350 | default: |
1351 | r = -1; | |
6b73eeaf ST |
1352 | } |
1353 | ||
13c97bf5 | 1354 | return r; |
6b73eeaf ST |
1355 | } |
1356 | ||
1da177e4 LT |
1357 | static int dvb_frontend_ioctl(struct inode *inode, struct file *file, |
1358 | unsigned int cmd, void *parg) | |
1359 | { | |
1360 | struct dvb_device *dvbdev = file->private_data; | |
1361 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 1362 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
1363 | int err = -EOPNOTSUPP; |
1364 | ||
46b4f7c1 | 1365 | dprintk ("%s\n", __func__); |
1da177e4 | 1366 | |
813ce47c | 1367 | if (fepriv->exit) |
1da177e4 LT |
1368 | return -ENODEV; |
1369 | ||
1370 | if ((file->f_flags & O_ACCMODE) == O_RDONLY && | |
1371 | (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT || | |
1372 | cmd == FE_DISEQC_RECV_SLAVE_REPLY)) | |
1373 | return -EPERM; | |
1374 | ||
1375 | if (down_interruptible (&fepriv->sem)) | |
1376 | return -ERESTARTSYS; | |
1377 | ||
13c97bf5 ST |
1378 | if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY)) |
1379 | err = dvb_frontend_ioctl_properties(inode, file, cmd, parg); | |
4dd88bec ST |
1380 | else { |
1381 | fe->dtv_property_cache.state = DTV_UNDEFINED; | |
13c97bf5 | 1382 | err = dvb_frontend_ioctl_legacy(inode, file, cmd, parg); |
4dd88bec | 1383 | } |
13c97bf5 ST |
1384 | |
1385 | up(&fepriv->sem); | |
1386 | return err; | |
1387 | } | |
1388 | ||
1389 | static int dvb_frontend_ioctl_properties(struct inode *inode, struct file *file, | |
1390 | unsigned int cmd, void *parg) | |
1391 | { | |
1392 | struct dvb_device *dvbdev = file->private_data; | |
1393 | struct dvb_frontend *fe = dvbdev->priv; | |
e6f9ec86 | 1394 | int err = 0; |
e7fee0f3 ST |
1395 | |
1396 | struct dtv_properties *tvps = NULL; | |
1397 | struct dtv_property *tvp = NULL; | |
1398 | int i; | |
13c97bf5 ST |
1399 | |
1400 | dprintk("%s\n", __func__); | |
1401 | ||
6b73eeaf | 1402 | if(cmd == FE_SET_PROPERTY) { |
e7fee0f3 | 1403 | tvps = (struct dtv_properties __user *)parg; |
6b73eeaf | 1404 | |
a1bc84c0 ST |
1405 | dprintk("%s() properties.num = %d\n", __func__, tvps->num); |
1406 | dprintk("%s() properties.props = %p\n", __func__, tvps->props); | |
e7fee0f3 ST |
1407 | |
1408 | /* Put an arbitrary limit on the number of messages that can | |
1409 | * be sent at once */ | |
6068f506 | 1410 | if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS)) |
e7fee0f3 ST |
1411 | return -EINVAL; |
1412 | ||
1413 | tvp = (struct dtv_property *) kmalloc(tvps->num * | |
1414 | sizeof(struct dtv_property), GFP_KERNEL); | |
1415 | if (!tvp) { | |
1416 | err = -ENOMEM; | |
1417 | goto out; | |
6b73eeaf ST |
1418 | } |
1419 | ||
e7fee0f3 ST |
1420 | if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) { |
1421 | err = -EFAULT; | |
1422 | goto out; | |
1423 | } | |
1424 | ||
d48cb402 ST |
1425 | for (i = 0; i < tvps->num; i++) { |
1426 | (tvp + i)->result = dtv_property_process_set(fe, tvp + i, inode, file); | |
1427 | err |= (tvp + i)->result; | |
1428 | } | |
e7fee0f3 | 1429 | |
a1bc84c0 ST |
1430 | if(fe->dtv_property_cache.state == DTV_TUNE) |
1431 | dprintk("%s() Property cache is full, tuning\n", __func__); | |
bfbf2dae | 1432 | |
363429a0 ST |
1433 | } else |
1434 | if(cmd == FE_GET_PROPERTY) { | |
363429a0 ST |
1435 | |
1436 | tvps = (struct dtv_properties __user *)parg; | |
1437 | ||
a1bc84c0 ST |
1438 | dprintk("%s() properties.num = %d\n", __func__, tvps->num); |
1439 | dprintk("%s() properties.props = %p\n", __func__, tvps->props); | |
363429a0 ST |
1440 | |
1441 | /* Put an arbitrary limit on the number of messages that can | |
1442 | * be sent at once */ | |
6068f506 | 1443 | if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS)) |
363429a0 ST |
1444 | return -EINVAL; |
1445 | ||
1446 | tvp = (struct dtv_property *) kmalloc(tvps->num * | |
1447 | sizeof(struct dtv_property), GFP_KERNEL); | |
1448 | if (!tvp) { | |
1449 | err = -ENOMEM; | |
1450 | goto out; | |
1451 | } | |
1452 | ||
1453 | if (copy_from_user(tvp, tvps->props, tvps->num * sizeof(struct dtv_property))) { | |
1454 | err = -EFAULT; | |
1455 | goto out; | |
1456 | } | |
1457 | ||
d48cb402 ST |
1458 | for (i = 0; i < tvps->num; i++) { |
1459 | (tvp + i)->result = dtv_property_process_get(fe, tvp + i, inode, file); | |
1460 | err |= (tvp + i)->result; | |
1461 | } | |
363429a0 ST |
1462 | |
1463 | if (copy_to_user(tvps->props, tvp, tvps->num * sizeof(struct dtv_property))) { | |
1464 | err = -EFAULT; | |
1465 | goto out; | |
1466 | } | |
1467 | ||
363429a0 ST |
1468 | } else |
1469 | err = -EOPNOTSUPP; | |
1470 | ||
e7fee0f3 ST |
1471 | out: |
1472 | kfree(tvp); | |
13c97bf5 ST |
1473 | return err; |
1474 | } | |
1475 | ||
1476 | static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file, | |
1477 | unsigned int cmd, void *parg) | |
1478 | { | |
1479 | struct dvb_device *dvbdev = file->private_data; | |
1480 | struct dvb_frontend *fe = dvbdev->priv; | |
1481 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
1482 | int err = -EOPNOTSUPP; | |
1483 | ||
1da177e4 LT |
1484 | switch (cmd) { |
1485 | case FE_GET_INFO: { | |
0c53c70f | 1486 | struct dvb_frontend_info* info = parg; |
dea74869 | 1487 | memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info)); |
c471b331 | 1488 | dvb_frontend_get_frequeny_limits(fe, &info->frequency_min, &info->frequency_max); |
1da177e4 LT |
1489 | |
1490 | /* Force the CAN_INVERSION_AUTO bit on. If the frontend doesn't | |
1491 | * do it, it is done for it. */ | |
1492 | info->caps |= FE_CAN_INVERSION_AUTO; | |
1493 | err = 0; | |
1494 | break; | |
1495 | } | |
1496 | ||
6757ccc5 PB |
1497 | case FE_READ_STATUS: { |
1498 | fe_status_t* status = parg; | |
1499 | ||
1500 | /* if retune was requested but hasn't occured yet, prevent | |
1501 | * that user get signal state from previous tuning */ | |
1502 | if(fepriv->state == FESTATE_RETUNE) { | |
1503 | err=0; | |
1504 | *status = 0; | |
1505 | break; | |
1506 | } | |
1507 | ||
dea74869 PB |
1508 | if (fe->ops.read_status) |
1509 | err = fe->ops.read_status(fe, status); | |
1da177e4 | 1510 | break; |
6757ccc5 | 1511 | } |
1da177e4 | 1512 | case FE_READ_BER: |
dea74869 PB |
1513 | if (fe->ops.read_ber) |
1514 | err = fe->ops.read_ber(fe, (__u32*) parg); | |
1da177e4 LT |
1515 | break; |
1516 | ||
1517 | case FE_READ_SIGNAL_STRENGTH: | |
dea74869 PB |
1518 | if (fe->ops.read_signal_strength) |
1519 | err = fe->ops.read_signal_strength(fe, (__u16*) parg); | |
1da177e4 LT |
1520 | break; |
1521 | ||
1522 | case FE_READ_SNR: | |
dea74869 PB |
1523 | if (fe->ops.read_snr) |
1524 | err = fe->ops.read_snr(fe, (__u16*) parg); | |
1da177e4 LT |
1525 | break; |
1526 | ||
1527 | case FE_READ_UNCORRECTED_BLOCKS: | |
dea74869 PB |
1528 | if (fe->ops.read_ucblocks) |
1529 | err = fe->ops.read_ucblocks(fe, (__u32*) parg); | |
1da177e4 LT |
1530 | break; |
1531 | ||
1532 | ||
1533 | case FE_DISEQC_RESET_OVERLOAD: | |
dea74869 PB |
1534 | if (fe->ops.diseqc_reset_overload) { |
1535 | err = fe->ops.diseqc_reset_overload(fe); | |
1da177e4 LT |
1536 | fepriv->state = FESTATE_DISEQC; |
1537 | fepriv->status = 0; | |
1538 | } | |
1539 | break; | |
1540 | ||
1541 | case FE_DISEQC_SEND_MASTER_CMD: | |
dea74869 PB |
1542 | if (fe->ops.diseqc_send_master_cmd) { |
1543 | err = fe->ops.diseqc_send_master_cmd(fe, (struct dvb_diseqc_master_cmd*) parg); | |
1da177e4 LT |
1544 | fepriv->state = FESTATE_DISEQC; |
1545 | fepriv->status = 0; | |
1546 | } | |
1547 | break; | |
1548 | ||
1549 | case FE_DISEQC_SEND_BURST: | |
dea74869 PB |
1550 | if (fe->ops.diseqc_send_burst) { |
1551 | err = fe->ops.diseqc_send_burst(fe, (fe_sec_mini_cmd_t) parg); | |
1da177e4 LT |
1552 | fepriv->state = FESTATE_DISEQC; |
1553 | fepriv->status = 0; | |
1554 | } | |
1555 | break; | |
1556 | ||
1557 | case FE_SET_TONE: | |
dea74869 PB |
1558 | if (fe->ops.set_tone) { |
1559 | err = fe->ops.set_tone(fe, (fe_sec_tone_mode_t) parg); | |
64454016 | 1560 | fepriv->tone = (fe_sec_tone_mode_t) parg; |
1da177e4 LT |
1561 | fepriv->state = FESTATE_DISEQC; |
1562 | fepriv->status = 0; | |
1563 | } | |
1564 | break; | |
1565 | ||
1566 | case FE_SET_VOLTAGE: | |
dea74869 PB |
1567 | if (fe->ops.set_voltage) { |
1568 | err = fe->ops.set_voltage(fe, (fe_sec_voltage_t) parg); | |
64454016 | 1569 | fepriv->voltage = (fe_sec_voltage_t) parg; |
1da177e4 LT |
1570 | fepriv->state = FESTATE_DISEQC; |
1571 | fepriv->status = 0; | |
1572 | } | |
1573 | break; | |
1574 | ||
1575 | case FE_DISHNETWORK_SEND_LEGACY_CMD: | |
dea74869 PB |
1576 | if (fe->ops.dishnetwork_send_legacy_command) { |
1577 | err = fe->ops.dishnetwork_send_legacy_command(fe, (unsigned long) parg); | |
1da177e4 LT |
1578 | fepriv->state = FESTATE_DISEQC; |
1579 | fepriv->status = 0; | |
dea74869 | 1580 | } else if (fe->ops.set_voltage) { |
83b75b04 N |
1581 | /* |
1582 | * NOTE: This is a fallback condition. Some frontends | |
1583 | * (stv0299 for instance) take longer than 8msec to | |
1584 | * respond to a set_voltage command. Those switches | |
1585 | * need custom routines to switch properly. For all | |
1586 | * other frontends, the following shoule work ok. | |
1587 | * Dish network legacy switches (as used by Dish500) | |
1588 | * are controlled by sending 9-bit command words | |
1589 | * spaced 8msec apart. | |
1590 | * the actual command word is switch/port dependant | |
1591 | * so it is up to the userspace application to send | |
1592 | * the right command. | |
1593 | * The command must always start with a '0' after | |
1594 | * initialization, so parg is 8 bits and does not | |
1595 | * include the initialization or start bit | |
1596 | */ | |
c6eb8eaf | 1597 | unsigned long swcmd = ((unsigned long) parg) << 1; |
83b75b04 N |
1598 | struct timeval nexttime; |
1599 | struct timeval tv[10]; | |
1600 | int i; | |
1601 | u8 last = 1; | |
1602 | if (dvb_frontend_debug) | |
c6eb8eaf | 1603 | printk("%s switch command: 0x%04lx\n", __func__, swcmd); |
83b75b04 N |
1604 | do_gettimeofday(&nexttime); |
1605 | if (dvb_frontend_debug) | |
1606 | memcpy(&tv[0], &nexttime, sizeof(struct timeval)); | |
1607 | /* before sending a command, initialize by sending | |
1608 | * a 32ms 18V to the switch | |
1609 | */ | |
dea74869 | 1610 | fe->ops.set_voltage(fe, SEC_VOLTAGE_18); |
83b75b04 N |
1611 | dvb_frontend_sleep_until(&nexttime, 32000); |
1612 | ||
1613 | for (i = 0; i < 9; i++) { | |
1614 | if (dvb_frontend_debug) | |
1615 | do_gettimeofday(&tv[i + 1]); | |
c6eb8eaf | 1616 | if ((swcmd & 0x01) != last) { |
83b75b04 | 1617 | /* set voltage to (last ? 13V : 18V) */ |
dea74869 | 1618 | fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18); |
83b75b04 N |
1619 | last = (last) ? 0 : 1; |
1620 | } | |
c6eb8eaf | 1621 | swcmd = swcmd >> 1; |
83b75b04 N |
1622 | if (i != 8) |
1623 | dvb_frontend_sleep_until(&nexttime, 8000); | |
1624 | } | |
1625 | if (dvb_frontend_debug) { | |
1626 | printk("%s(%d): switch delay (should be 32k followed by all 8k\n", | |
46b4f7c1 | 1627 | __func__, fe->dvb->num); |
83b75b04 N |
1628 | for (i = 1; i < 10; i++) |
1629 | printk("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i])); | |
1630 | } | |
1631 | err = 0; | |
1632 | fepriv->state = FESTATE_DISEQC; | |
1633 | fepriv->status = 0; | |
1da177e4 LT |
1634 | } |
1635 | break; | |
1636 | ||
1637 | case FE_DISEQC_RECV_SLAVE_REPLY: | |
dea74869 PB |
1638 | if (fe->ops.diseqc_recv_slave_reply) |
1639 | err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg); | |
1da177e4 LT |
1640 | break; |
1641 | ||
1642 | case FE_ENABLE_HIGH_LNB_VOLTAGE: | |
dea74869 PB |
1643 | if (fe->ops.enable_high_lnb_voltage) |
1644 | err = fe->ops.enable_high_lnb_voltage(fe, (long) parg); | |
1da177e4 LT |
1645 | break; |
1646 | ||
1647 | case FE_SET_FRONTEND: { | |
1648 | struct dvb_frontend_tune_settings fetunesettings; | |
1649 | ||
e7fee0f3 | 1650 | if(fe->dtv_property_cache.state == DTV_TUNE) { |
6b73eeaf ST |
1651 | if (dvb_frontend_check_parameters(fe, &fepriv->parameters) < 0) { |
1652 | err = -EINVAL; | |
1653 | break; | |
1654 | } | |
1655 | } else { | |
1656 | if (dvb_frontend_check_parameters(fe, parg) < 0) { | |
1657 | err = -EINVAL; | |
1658 | break; | |
1659 | } | |
1fab46f0 | 1660 | |
6b73eeaf ST |
1661 | memcpy (&fepriv->parameters, parg, |
1662 | sizeof (struct dvb_frontend_parameters)); | |
1d78cac4 | 1663 | dtv_property_cache_sync(fe, &fepriv->parameters); |
6b73eeaf | 1664 | } |
1da177e4 LT |
1665 | |
1666 | memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings)); | |
1667 | memcpy(&fetunesettings.parameters, parg, | |
1668 | sizeof (struct dvb_frontend_parameters)); | |
1669 | ||
1670 | /* force auto frequency inversion if requested */ | |
1671 | if (dvb_force_auto_inversion) { | |
1672 | fepriv->parameters.inversion = INVERSION_AUTO; | |
1673 | fetunesettings.parameters.inversion = INVERSION_AUTO; | |
1674 | } | |
dea74869 | 1675 | if (fe->ops.info.type == FE_OFDM) { |
1b3c3714 | 1676 | /* without hierarchical coding code_rate_LP is irrelevant, |
1da177e4 LT |
1677 | * so we tolerate the otherwise invalid FEC_NONE setting */ |
1678 | if (fepriv->parameters.u.ofdm.hierarchy_information == HIERARCHY_NONE && | |
1679 | fepriv->parameters.u.ofdm.code_rate_LP == FEC_NONE) | |
1680 | fepriv->parameters.u.ofdm.code_rate_LP = FEC_AUTO; | |
1681 | } | |
1682 | ||
1683 | /* get frontend-specific tuning settings */ | |
dea74869 | 1684 | if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) { |
1da177e4 LT |
1685 | fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000; |
1686 | fepriv->max_drift = fetunesettings.max_drift; | |
1687 | fepriv->step_size = fetunesettings.step_size; | |
1688 | } else { | |
1689 | /* default values */ | |
dea74869 | 1690 | switch(fe->ops.info.type) { |
1da177e4 LT |
1691 | case FE_QPSK: |
1692 | fepriv->min_delay = HZ/20; | |
1693 | fepriv->step_size = fepriv->parameters.u.qpsk.symbol_rate / 16000; | |
1694 | fepriv->max_drift = fepriv->parameters.u.qpsk.symbol_rate / 2000; | |
1695 | break; | |
1696 | ||
1697 | case FE_QAM: | |
1698 | fepriv->min_delay = HZ/20; | |
1699 | fepriv->step_size = 0; /* no zigzag */ | |
1700 | fepriv->max_drift = 0; | |
1701 | break; | |
1702 | ||
1703 | case FE_OFDM: | |
1704 | fepriv->min_delay = HZ/20; | |
dea74869 PB |
1705 | fepriv->step_size = fe->ops.info.frequency_stepsize * 2; |
1706 | fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1; | |
1da177e4 LT |
1707 | break; |
1708 | case FE_ATSC: | |
4821fb1d MA |
1709 | fepriv->min_delay = HZ/20; |
1710 | fepriv->step_size = 0; | |
1711 | fepriv->max_drift = 0; | |
1da177e4 LT |
1712 | break; |
1713 | } | |
1714 | } | |
1715 | if (dvb_override_tune_delay > 0) | |
1716 | fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000; | |
1717 | ||
1718 | fepriv->state = FESTATE_RETUNE; | |
1d06059c IL |
1719 | |
1720 | /* Request the search algorithm to search */ | |
1721 | fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN; | |
1722 | ||
1da177e4 LT |
1723 | dvb_frontend_wakeup(fe); |
1724 | dvb_frontend_add_event(fe, 0); | |
1725 | fepriv->status = 0; | |
1726 | err = 0; | |
1727 | break; | |
1728 | } | |
1729 | ||
1730 | case FE_GET_EVENT: | |
1731 | err = dvb_frontend_get_event (fe, parg, file->f_flags); | |
1732 | break; | |
1733 | ||
1734 | case FE_GET_FRONTEND: | |
dea74869 | 1735 | if (fe->ops.get_frontend) { |
1da177e4 | 1736 | memcpy (parg, &fepriv->parameters, sizeof (struct dvb_frontend_parameters)); |
dea74869 | 1737 | err = fe->ops.get_frontend(fe, (struct dvb_frontend_parameters*) parg); |
1da177e4 LT |
1738 | } |
1739 | break; | |
36cb557a AQ |
1740 | |
1741 | case FE_SET_FRONTEND_TUNE_MODE: | |
e18828e4 | 1742 | fepriv->tune_mode_flags = (unsigned long) parg; |
1b172e0c | 1743 | err = 0; |
36cb557a | 1744 | break; |
1da177e4 LT |
1745 | }; |
1746 | ||
1da177e4 LT |
1747 | return err; |
1748 | } | |
1749 | ||
6b73eeaf | 1750 | |
1da177e4 LT |
1751 | static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait) |
1752 | { | |
1753 | struct dvb_device *dvbdev = file->private_data; | |
1754 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 1755 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 | 1756 | |
46b4f7c1 | 1757 | dprintk ("%s\n", __func__); |
1da177e4 LT |
1758 | |
1759 | poll_wait (file, &fepriv->events.wait_queue, wait); | |
1760 | ||
1761 | if (fepriv->events.eventw != fepriv->events.eventr) | |
1762 | return (POLLIN | POLLRDNORM | POLLPRI); | |
1763 | ||
1764 | return 0; | |
1765 | } | |
1766 | ||
1767 | static int dvb_frontend_open(struct inode *inode, struct file *file) | |
1768 | { | |
1769 | struct dvb_device *dvbdev = file->private_data; | |
1770 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 1771 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
59b1842d | 1772 | struct dvb_adapter *adapter = fe->dvb; |
1da177e4 LT |
1773 | int ret; |
1774 | ||
46b4f7c1 | 1775 | dprintk ("%s\n", __func__); |
1da177e4 | 1776 | |
59b1842d DB |
1777 | if (adapter->mfe_shared) { |
1778 | mutex_lock (&adapter->mfe_lock); | |
6594690b DB |
1779 | |
1780 | if (adapter->mfe_dvbdev == NULL) | |
1781 | adapter->mfe_dvbdev = dvbdev; | |
1782 | ||
1783 | else if (adapter->mfe_dvbdev != dvbdev) { | |
1784 | struct dvb_device | |
1785 | *mfedev = adapter->mfe_dvbdev; | |
1786 | struct dvb_frontend | |
1787 | *mfe = mfedev->priv; | |
1788 | struct dvb_frontend_private | |
1789 | *mfepriv = mfe->frontend_priv; | |
1790 | int mferetry = (dvb_mfe_wait_time << 1); | |
1791 | ||
1792 | mutex_unlock (&adapter->mfe_lock); | |
1793 | while (mferetry-- && (mfedev->users != -1 || | |
1794 | mfepriv->thread != NULL)) { | |
1795 | if(msleep_interruptible(500)) { | |
1796 | if(signal_pending(current)) | |
1797 | return -EINTR; | |
59b1842d | 1798 | } |
6594690b DB |
1799 | } |
1800 | ||
1801 | mutex_lock (&adapter->mfe_lock); | |
1802 | if(adapter->mfe_dvbdev != dvbdev) { | |
59b1842d DB |
1803 | mfedev = adapter->mfe_dvbdev; |
1804 | mfe = mfedev->priv; | |
1805 | mfepriv = mfe->frontend_priv; | |
6594690b DB |
1806 | if (mfedev->users != -1 || |
1807 | mfepriv->thread != NULL) { | |
1808 | mutex_unlock (&adapter->mfe_lock); | |
1809 | return -EBUSY; | |
59b1842d | 1810 | } |
6594690b | 1811 | adapter->mfe_dvbdev = dvbdev; |
59b1842d | 1812 | } |
59b1842d DB |
1813 | } |
1814 | } | |
1815 | ||
48136e1e OE |
1816 | if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) { |
1817 | if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0) | |
59b1842d | 1818 | goto err0; |
ba7e6f3e ST |
1819 | } |
1820 | ||
48136e1e OE |
1821 | if ((ret = dvb_generic_open (inode, file)) < 0) |
1822 | goto err1; | |
04c56d0e | 1823 | |
48136e1e | 1824 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { |
04c56d0e AQ |
1825 | /* normal tune mode when opened R/W */ |
1826 | fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT; | |
1827 | fepriv->tone = -1; | |
1828 | fepriv->voltage = -1; | |
1829 | ||
1da177e4 LT |
1830 | ret = dvb_frontend_start (fe); |
1831 | if (ret) | |
48136e1e | 1832 | goto err2; |
1da177e4 LT |
1833 | |
1834 | /* empty event queue */ | |
1835 | fepriv->events.eventr = fepriv->events.eventw = 0; | |
1836 | } | |
1837 | ||
59b1842d DB |
1838 | if (adapter->mfe_shared) |
1839 | mutex_unlock (&adapter->mfe_lock); | |
1da177e4 | 1840 | return ret; |
48136e1e OE |
1841 | |
1842 | err2: | |
1843 | dvb_generic_release(inode, file); | |
1844 | err1: | |
1845 | if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) | |
1846 | fe->ops.ts_bus_ctrl(fe, 0); | |
59b1842d DB |
1847 | err0: |
1848 | if (adapter->mfe_shared) | |
1849 | mutex_unlock (&adapter->mfe_lock); | |
48136e1e | 1850 | return ret; |
1da177e4 LT |
1851 | } |
1852 | ||
1853 | static int dvb_frontend_release(struct inode *inode, struct file *file) | |
1854 | { | |
1855 | struct dvb_device *dvbdev = file->private_data; | |
1856 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 1857 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
ca5be9cd | 1858 | int ret; |
1da177e4 | 1859 | |
46b4f7c1 | 1860 | dprintk ("%s\n", __func__); |
1da177e4 LT |
1861 | |
1862 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) | |
1863 | fepriv->release_jiffies = jiffies; | |
1864 | ||
ca5be9cd MR |
1865 | ret = dvb_generic_release (inode, file); |
1866 | ||
48136e1e OE |
1867 | if (dvbdev->users == -1) { |
1868 | if (fepriv->exit == 1) { | |
1869 | fops_put(file->f_op); | |
1870 | file->f_op = NULL; | |
1871 | wake_up(&dvbdev->wait_queue); | |
1872 | } | |
1873 | if (fe->ops.ts_bus_ctrl) | |
1874 | fe->ops.ts_bus_ctrl(fe, 0); | |
ca5be9cd | 1875 | } |
48136e1e | 1876 | |
ca5be9cd | 1877 | return ret; |
1da177e4 LT |
1878 | } |
1879 | ||
784e29d2 | 1880 | static const struct file_operations dvb_frontend_fops = { |
1da177e4 LT |
1881 | .owner = THIS_MODULE, |
1882 | .ioctl = dvb_generic_ioctl, | |
1883 | .poll = dvb_frontend_poll, | |
1884 | .open = dvb_frontend_open, | |
1885 | .release = dvb_frontend_release | |
1886 | }; | |
1887 | ||
1888 | int dvb_register_frontend(struct dvb_adapter* dvb, | |
1889 | struct dvb_frontend* fe) | |
1890 | { | |
1891 | struct dvb_frontend_private *fepriv; | |
1892 | static const struct dvb_device dvbdev_template = { | |
1893 | .users = ~0, | |
1894 | .writers = 1, | |
1895 | .readers = (~0)-1, | |
1896 | .fops = &dvb_frontend_fops, | |
1897 | .kernel_ioctl = dvb_frontend_ioctl | |
1898 | }; | |
1899 | ||
46b4f7c1 | 1900 | dprintk ("%s\n", __func__); |
1da177e4 | 1901 | |
3593cab5 | 1902 | if (mutex_lock_interruptible(&frontend_mutex)) |
1da177e4 LT |
1903 | return -ERESTARTSYS; |
1904 | ||
7408187d | 1905 | fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL); |
1da177e4 | 1906 | if (fe->frontend_priv == NULL) { |
3593cab5 | 1907 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
1908 | return -ENOMEM; |
1909 | } | |
0c53c70f | 1910 | fepriv = fe->frontend_priv; |
1da177e4 LT |
1911 | |
1912 | init_MUTEX (&fepriv->sem); | |
1913 | init_waitqueue_head (&fepriv->wait_queue); | |
1914 | init_waitqueue_head (&fepriv->events.wait_queue); | |
03b76123 | 1915 | mutex_init(&fepriv->events.mtx); |
1da177e4 LT |
1916 | fe->dvb = dvb; |
1917 | fepriv->inversion = INVERSION_OFF; | |
1918 | ||
363c35fc | 1919 | printk ("DVB: registering adapter %i frontend %i (%s)...\n", |
1da177e4 | 1920 | fe->dvb->num, |
363c35fc | 1921 | fe->id, |
dea74869 | 1922 | fe->ops.info.name); |
1da177e4 LT |
1923 | |
1924 | dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template, | |
1925 | fe, DVB_DEVICE_FRONTEND); | |
1926 | ||
3593cab5 | 1927 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
1928 | return 0; |
1929 | } | |
1930 | EXPORT_SYMBOL(dvb_register_frontend); | |
1931 | ||
1932 | int dvb_unregister_frontend(struct dvb_frontend* fe) | |
1933 | { | |
0c53c70f | 1934 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
46b4f7c1 | 1935 | dprintk ("%s\n", __func__); |
1da177e4 | 1936 | |
57861b43 | 1937 | mutex_lock(&frontend_mutex); |
ca5be9cd | 1938 | dvb_frontend_stop (fe); |
57861b43 MR |
1939 | mutex_unlock(&frontend_mutex); |
1940 | ||
1941 | if (fepriv->dvbdev->users < -1) | |
1942 | wait_event(fepriv->dvbdev->wait_queue, | |
1943 | fepriv->dvbdev->users==-1); | |
1944 | ||
3593cab5 | 1945 | mutex_lock(&frontend_mutex); |
1da177e4 | 1946 | dvb_unregister_device (fepriv->dvbdev); |
d9955060 | 1947 | |
1da177e4 LT |
1948 | /* fe is invalid now */ |
1949 | kfree(fepriv); | |
3593cab5 | 1950 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
1951 | return 0; |
1952 | } | |
1953 | EXPORT_SYMBOL(dvb_unregister_frontend); | |
f52a838b | 1954 | |
149ef72d | 1955 | #ifdef CONFIG_MEDIA_ATTACH |
f52a838b AQ |
1956 | void dvb_frontend_detach(struct dvb_frontend* fe) |
1957 | { | |
1958 | void *ptr; | |
1959 | ||
1960 | if (fe->ops.release_sec) { | |
1961 | fe->ops.release_sec(fe); | |
1962 | symbol_put_addr(fe->ops.release_sec); | |
1963 | } | |
1964 | if (fe->ops.tuner_ops.release) { | |
1965 | fe->ops.tuner_ops.release(fe); | |
1966 | symbol_put_addr(fe->ops.tuner_ops.release); | |
1967 | } | |
2426a27e MK |
1968 | if (fe->ops.analog_ops.release) { |
1969 | fe->ops.analog_ops.release(fe); | |
1970 | symbol_put_addr(fe->ops.analog_ops.release); | |
1971 | } | |
f52a838b AQ |
1972 | ptr = (void*)fe->ops.release; |
1973 | if (ptr) { | |
1974 | fe->ops.release(fe); | |
1975 | symbol_put_addr(ptr); | |
1976 | } | |
1977 | } | |
1978 | #else | |
1979 | void dvb_frontend_detach(struct dvb_frontend* fe) | |
1980 | { | |
1981 | if (fe->ops.release_sec) | |
1982 | fe->ops.release_sec(fe); | |
1983 | if (fe->ops.tuner_ops.release) | |
1984 | fe->ops.tuner_ops.release(fe); | |
2426a27e MK |
1985 | if (fe->ops.analog_ops.release) |
1986 | fe->ops.analog_ops.release(fe); | |
f52a838b AQ |
1987 | if (fe->ops.release) |
1988 | fe->ops.release(fe); | |
1989 | } | |
1990 | #endif | |
1991 | EXPORT_SYMBOL(dvb_frontend_detach); |