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