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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 | ||
8de8594a MCC |
28 | /* Enables DVBv3 compatibility bits at the headers */ |
29 | #define __DVB_CORE__ | |
30 | ||
1da177e4 LT |
31 | #include <linux/string.h> |
32 | #include <linux/kernel.h> | |
33 | #include <linux/sched.h> | |
34 | #include <linux/wait.h> | |
35 | #include <linux/slab.h> | |
36 | #include <linux/poll.h> | |
4c4cb1b1 | 37 | #include <linux/semaphore.h> |
1da177e4 | 38 | #include <linux/module.h> |
1da177e4 | 39 | #include <linux/list.h> |
7dfb7103 | 40 | #include <linux/freezer.h> |
cc89c229 | 41 | #include <linux/jiffies.h> |
8eec1429 | 42 | #include <linux/kthread.h> |
9056a23b | 43 | #include <linux/ktime.h> |
1da177e4 | 44 | #include <asm/processor.h> |
1da177e4 LT |
45 | |
46 | #include "dvb_frontend.h" | |
47 | #include "dvbdev.h" | |
eacf8d8d | 48 | #include <linux/dvb/version.h> |
1da177e4 LT |
49 | |
50 | static int dvb_frontend_debug; | |
849be2cd | 51 | static int dvb_shutdown_timeout; |
1da177e4 LT |
52 | static int dvb_force_auto_inversion; |
53 | static int dvb_override_tune_delay; | |
54 | static int dvb_powerdown_on_sleep = 1; | |
59b1842d | 55 | static int dvb_mfe_wait_time = 5; |
1da177e4 LT |
56 | |
57 | module_param_named(frontend_debug, dvb_frontend_debug, int, 0644); | |
f4f009a7 | 58 | MODULE_PARM_DESC(frontend_debug, "Turn on/off frontend core debugging (default:off)."); |
6baad3f0 | 59 | module_param(dvb_shutdown_timeout, int, 0644); |
1da177e4 | 60 | MODULE_PARM_DESC(dvb_shutdown_timeout, "wait <shutdown_timeout> seconds after close() before suspending hardware"); |
6baad3f0 | 61 | module_param(dvb_force_auto_inversion, int, 0644); |
1da177e4 | 62 | MODULE_PARM_DESC(dvb_force_auto_inversion, "0: normal (default), 1: INVERSION_AUTO forced always"); |
6baad3f0 | 63 | module_param(dvb_override_tune_delay, int, 0644); |
1da177e4 | 64 | MODULE_PARM_DESC(dvb_override_tune_delay, "0: normal (default), >0 => delay in milliseconds to wait for lock after a tune attempt"); |
6baad3f0 | 65 | module_param(dvb_powerdown_on_sleep, int, 0644); |
a8558577 | 66 | MODULE_PARM_DESC(dvb_powerdown_on_sleep, "0: do not power down, 1: turn LNB voltage off on sleep (default)"); |
59b1842d DB |
67 | module_param(dvb_mfe_wait_time, int, 0644); |
68 | 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 | 69 | |
1da177e4 LT |
70 | #define FESTATE_IDLE 1 |
71 | #define FESTATE_RETUNE 2 | |
72 | #define FESTATE_TUNING_FAST 4 | |
73 | #define FESTATE_TUNING_SLOW 8 | |
74 | #define FESTATE_TUNED 16 | |
75 | #define FESTATE_ZIGZAG_FAST 32 | |
76 | #define FESTATE_ZIGZAG_SLOW 64 | |
77 | #define FESTATE_DISEQC 128 | |
01886255 | 78 | #define FESTATE_ERROR 256 |
1da177e4 LT |
79 | #define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC) |
80 | #define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST) | |
81 | #define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW) | |
82 | #define FESTATE_LOSTLOCK (FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW) | |
0249ef16 | 83 | |
1da177e4 LT |
84 | /* |
85 | * FESTATE_IDLE. No tuning parameters have been supplied and the loop is idling. | |
86 | * FESTATE_RETUNE. Parameters have been supplied, but we have not yet performed the first tune. | |
87 | * FESTATE_TUNING_FAST. Tuning parameters have been supplied and fast zigzag scan is in progress. | |
88 | * FESTATE_TUNING_SLOW. Tuning parameters have been supplied. Fast zigzag failed, so we're trying again, but slower. | |
89 | * FESTATE_TUNED. The frontend has successfully locked on. | |
90 | * FESTATE_ZIGZAG_FAST. The lock has been lost, and a fast zigzag has been initiated to try and regain it. | |
91 | * FESTATE_ZIGZAG_SLOW. The lock has been lost. Fast zigzag has been failed, so we're trying again, but slower. | |
92 | * FESTATE_DISEQC. A DISEQC command has just been issued. | |
93 | * FESTATE_WAITFORLOCK. When we're waiting for a lock. | |
94 | * FESTATE_SEARCHING_FAST. When we're searching for a signal using a fast zigzag scan. | |
95 | * FESTATE_SEARCHING_SLOW. When we're searching for a signal using a slow zigzag scan. | |
96 | * FESTATE_LOSTLOCK. When the lock has been lost, and we're searching it again. | |
97 | */ | |
98 | ||
3593cab5 | 99 | static DEFINE_MUTEX(frontend_mutex); |
1da177e4 LT |
100 | |
101 | struct dvb_frontend_private { | |
102 | ||
36cb557a | 103 | /* thread/frontend values */ |
1da177e4 | 104 | struct dvb_device *dvbdev; |
a5959dbe | 105 | struct dvb_frontend_parameters parameters_out; |
1da177e4 LT |
106 | struct dvb_fe_events events; |
107 | struct semaphore sem; | |
108 | struct list_head list_head; | |
109 | wait_queue_head_t wait_queue; | |
8eec1429 | 110 | struct task_struct *thread; |
1da177e4 | 111 | unsigned long release_jiffies; |
36cb557a | 112 | unsigned int wakeup; |
0df289a2 | 113 | enum fe_status status; |
400b7083 | 114 | unsigned long tune_mode_flags; |
36cb557a | 115 | unsigned int delay; |
86f40cc3 | 116 | unsigned int reinitialise; |
64454016 AQ |
117 | int tone; |
118 | int voltage; | |
36cb557a AQ |
119 | |
120 | /* swzigzag values */ | |
121 | unsigned int state; | |
122 | unsigned int bending; | |
123 | int lnb_drift; | |
124 | unsigned int inversion; | |
125 | unsigned int auto_step; | |
126 | unsigned int auto_sub_step; | |
127 | unsigned int started_auto_step; | |
128 | unsigned int min_delay; | |
129 | unsigned int max_drift; | |
130 | unsigned int step_size; | |
131 | int quality; | |
132 | unsigned int check_wrapped; | |
c59e7870 | 133 | enum dvbfe_search algo_status; |
135f9be9 MCC |
134 | |
135 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) | |
136 | struct media_pipeline pipe; | |
137 | struct media_entity *pipe_start_entity; | |
138 | #endif | |
1da177e4 LT |
139 | }; |
140 | ||
86f40cc3 | 141 | static void dvb_frontend_wakeup(struct dvb_frontend *fe); |
a689e365 | 142 | static int dtv_get_frontend(struct dvb_frontend *fe, |
2ea9a08d | 143 | struct dtv_frontend_properties *c, |
a689e365 | 144 | struct dvb_frontend_parameters *p_out); |
2ea9a08d MCC |
145 | static int |
146 | dtv_property_legacy_params_sync(struct dvb_frontend *fe, | |
147 | const struct dtv_frontend_properties *c, | |
148 | struct dvb_frontend_parameters *p); | |
a689e365 MCC |
149 | |
150 | static bool has_get_frontend(struct dvb_frontend *fe) | |
151 | { | |
c065f5b4 | 152 | return fe->ops.get_frontend != NULL; |
a689e365 | 153 | } |
1da177e4 | 154 | |
5bfaadde MCC |
155 | /* |
156 | * Due to DVBv3 API calls, a delivery system should be mapped into one of | |
157 | * the 4 DVBv3 delivery systems (FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC), | |
158 | * otherwise, a DVBv3 call will fail. | |
159 | */ | |
160 | enum dvbv3_emulation_type { | |
161 | DVBV3_UNKNOWN, | |
162 | DVBV3_QPSK, | |
163 | DVBV3_QAM, | |
164 | DVBV3_OFDM, | |
165 | DVBV3_ATSC, | |
166 | }; | |
167 | ||
168 | static enum dvbv3_emulation_type dvbv3_type(u32 delivery_system) | |
169 | { | |
170 | switch (delivery_system) { | |
171 | case SYS_DVBC_ANNEX_A: | |
172 | case SYS_DVBC_ANNEX_C: | |
173 | return DVBV3_QAM; | |
174 | case SYS_DVBS: | |
175 | case SYS_DVBS2: | |
176 | case SYS_TURBO: | |
177 | case SYS_ISDBS: | |
178 | case SYS_DSS: | |
179 | return DVBV3_QPSK; | |
180 | case SYS_DVBT: | |
181 | case SYS_DVBT2: | |
182 | case SYS_ISDBT: | |
224b6642 | 183 | case SYS_DTMB: |
5bfaadde MCC |
184 | return DVBV3_OFDM; |
185 | case SYS_ATSC: | |
ca689488 | 186 | case SYS_ATSCMH: |
5bfaadde MCC |
187 | case SYS_DVBC_ANNEX_B: |
188 | return DVBV3_ATSC; | |
189 | case SYS_UNDEFINED: | |
190 | case SYS_ISDBC: | |
191 | case SYS_DVBH: | |
192 | case SYS_DAB: | |
5bfaadde MCC |
193 | default: |
194 | /* | |
195 | * Doesn't know how to emulate those types and/or | |
196 | * there's no frontend driver from this type yet | |
197 | * with some emulation code, so, we're not sure yet how | |
198 | * to handle them, or they're not compatible with a DVBv3 call. | |
199 | */ | |
200 | return DVBV3_UNKNOWN; | |
201 | } | |
202 | } | |
203 | ||
0df289a2 MCC |
204 | static void dvb_frontend_add_event(struct dvb_frontend *fe, |
205 | enum fe_status status) | |
1da177e4 | 206 | { |
0c53c70f | 207 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
2ea9a08d | 208 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
1da177e4 LT |
209 | struct dvb_fe_events *events = &fepriv->events; |
210 | struct dvb_frontend_event *e; | |
211 | int wp; | |
212 | ||
36bdbc3f | 213 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
1da177e4 | 214 | |
a689e365 | 215 | if ((status & FE_HAS_LOCK) && has_get_frontend(fe)) |
2ea9a08d | 216 | dtv_get_frontend(fe, c, &fepriv->parameters_out); |
1da177e4 | 217 | |
77b1e2fb | 218 | mutex_lock(&events->mtx); |
1da177e4 | 219 | |
77b1e2fb | 220 | wp = (events->eventw + 1) % MAX_EVENT; |
1da177e4 LT |
221 | if (wp == events->eventr) { |
222 | events->overflow = 1; | |
223 | events->eventr = (events->eventr + 1) % MAX_EVENT; | |
224 | } | |
225 | ||
226 | e = &events->events[events->eventw]; | |
77b1e2fb | 227 | e->status = status; |
a5959dbe | 228 | e->parameters = fepriv->parameters_out; |
1da177e4 LT |
229 | |
230 | events->eventw = wp; | |
231 | ||
03b76123 | 232 | mutex_unlock(&events->mtx); |
1da177e4 | 233 | |
1da177e4 LT |
234 | wake_up_interruptible (&events->wait_queue); |
235 | } | |
236 | ||
237 | static int dvb_frontend_get_event(struct dvb_frontend *fe, | |
238 | struct dvb_frontend_event *event, int flags) | |
239 | { | |
0c53c70f | 240 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
241 | struct dvb_fe_events *events = &fepriv->events; |
242 | ||
36bdbc3f | 243 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
1da177e4 LT |
244 | |
245 | if (events->overflow) { | |
246 | events->overflow = 0; | |
247 | return -EOVERFLOW; | |
248 | } | |
249 | ||
250 | if (events->eventw == events->eventr) { | |
251 | int ret; | |
252 | ||
253 | if (flags & O_NONBLOCK) | |
254 | return -EWOULDBLOCK; | |
255 | ||
256 | up(&fepriv->sem); | |
257 | ||
258 | ret = wait_event_interruptible (events->wait_queue, | |
259 | events->eventw != events->eventr); | |
260 | ||
261 | if (down_interruptible (&fepriv->sem)) | |
262 | return -ERESTARTSYS; | |
263 | ||
264 | if (ret < 0) | |
265 | return ret; | |
266 | } | |
267 | ||
77b1e2fb AO |
268 | mutex_lock(&events->mtx); |
269 | *event = events->events[events->eventr]; | |
1da177e4 | 270 | events->eventr = (events->eventr + 1) % MAX_EVENT; |
03b76123 | 271 | mutex_unlock(&events->mtx); |
1da177e4 LT |
272 | |
273 | return 0; | |
274 | } | |
275 | ||
20640bea AO |
276 | static void dvb_frontend_clear_events(struct dvb_frontend *fe) |
277 | { | |
278 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
279 | struct dvb_fe_events *events = &fepriv->events; | |
280 | ||
281 | mutex_lock(&events->mtx); | |
282 | events->eventr = events->eventw; | |
283 | mutex_unlock(&events->mtx); | |
284 | } | |
285 | ||
1da177e4 LT |
286 | static void dvb_frontend_init(struct dvb_frontend *fe) |
287 | { | |
36bdbc3f AP |
288 | dev_dbg(fe->dvb->device, |
289 | "%s: initialising adapter %i frontend %i (%s)...\n", | |
290 | __func__, fe->dvb->num, fe->id, fe->ops.info.name); | |
dea74869 PB |
291 | |
292 | if (fe->ops.init) | |
293 | fe->ops.init(fe); | |
294 | if (fe->ops.tuner_ops.init) { | |
3b37a15c MA |
295 | if (fe->ops.i2c_gate_ctrl) |
296 | fe->ops.i2c_gate_ctrl(fe, 1); | |
dea74869 PB |
297 | fe->ops.tuner_ops.init(fe); |
298 | if (fe->ops.i2c_gate_ctrl) | |
299 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7eef5dd6 | 300 | } |
1da177e4 LT |
301 | } |
302 | ||
86f40cc3 AQ |
303 | void dvb_frontend_reinitialise(struct dvb_frontend *fe) |
304 | { | |
305 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
306 | ||
307 | fepriv->reinitialise = 1; | |
308 | dvb_frontend_wakeup(fe); | |
309 | } | |
310 | EXPORT_SYMBOL(dvb_frontend_reinitialise); | |
311 | ||
36cb557a | 312 | static void dvb_frontend_swzigzag_update_delay(struct dvb_frontend_private *fepriv, int locked) |
1da177e4 | 313 | { |
36cb557a | 314 | int q2; |
36bdbc3f | 315 | struct dvb_frontend *fe = fepriv->dvbdev->priv; |
1da177e4 | 316 | |
36bdbc3f | 317 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
1da177e4 | 318 | |
36cb557a AQ |
319 | if (locked) |
320 | (fepriv->quality) = (fepriv->quality * 220 + 36*256) / 256; | |
321 | else | |
322 | (fepriv->quality) = (fepriv->quality * 220 + 0) / 256; | |
1da177e4 | 323 | |
36cb557a AQ |
324 | q2 = fepriv->quality - 128; |
325 | q2 *= q2; | |
1da177e4 | 326 | |
36cb557a | 327 | fepriv->delay = fepriv->min_delay + q2 * HZ / (128*128); |
1da177e4 LT |
328 | } |
329 | ||
330 | /** | |
331 | * Performs automatic twiddling of frontend parameters. | |
332 | * | |
333 | * @param fe The frontend concerned. | |
334 | * @param check_wrapped Checks if an iteration has completed. DO NOT SET ON THE FIRST ATTEMPT | |
335 | * @returns Number of complete iterations that have been performed. | |
336 | */ | |
36cb557a | 337 | static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wrapped) |
1da177e4 LT |
338 | { |
339 | int autoinversion; | |
340 | int ready = 0; | |
01886255 | 341 | int fe_set_err = 0; |
0c53c70f | 342 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
ac3852c4 MCC |
343 | struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp; |
344 | int original_inversion = c->inversion; | |
345 | u32 original_frequency = c->frequency; | |
1da177e4 LT |
346 | |
347 | /* are we using autoinversion? */ | |
dea74869 | 348 | autoinversion = ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) && |
ac3852c4 | 349 | (c->inversion == INVERSION_AUTO)); |
1da177e4 LT |
350 | |
351 | /* setup parameters correctly */ | |
352 | while(!ready) { | |
353 | /* calculate the lnb_drift */ | |
354 | fepriv->lnb_drift = fepriv->auto_step * fepriv->step_size; | |
355 | ||
356 | /* wrap the auto_step if we've exceeded the maximum drift */ | |
357 | if (fepriv->lnb_drift > fepriv->max_drift) { | |
358 | fepriv->auto_step = 0; | |
359 | fepriv->auto_sub_step = 0; | |
360 | fepriv->lnb_drift = 0; | |
361 | } | |
362 | ||
363 | /* perform inversion and +/- zigzag */ | |
364 | switch(fepriv->auto_sub_step) { | |
365 | case 0: | |
366 | /* try with the current inversion and current drift setting */ | |
367 | ready = 1; | |
368 | break; | |
369 | ||
370 | case 1: | |
371 | if (!autoinversion) break; | |
372 | ||
373 | fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF; | |
374 | ready = 1; | |
375 | break; | |
376 | ||
377 | case 2: | |
378 | if (fepriv->lnb_drift == 0) break; | |
379 | ||
380 | fepriv->lnb_drift = -fepriv->lnb_drift; | |
381 | ready = 1; | |
382 | break; | |
383 | ||
384 | case 3: | |
385 | if (fepriv->lnb_drift == 0) break; | |
386 | if (!autoinversion) break; | |
387 | ||
388 | fepriv->inversion = (fepriv->inversion == INVERSION_OFF) ? INVERSION_ON : INVERSION_OFF; | |
389 | fepriv->lnb_drift = -fepriv->lnb_drift; | |
390 | ready = 1; | |
391 | break; | |
392 | ||
393 | default: | |
394 | fepriv->auto_step++; | |
395 | fepriv->auto_sub_step = -1; /* it'll be incremented to 0 in a moment */ | |
396 | break; | |
397 | } | |
398 | ||
399 | if (!ready) fepriv->auto_sub_step++; | |
400 | } | |
401 | ||
402 | /* if this attempt would hit where we started, indicate a complete | |
403 | * iteration has occurred */ | |
404 | if ((fepriv->auto_step == fepriv->started_auto_step) && | |
405 | (fepriv->auto_sub_step == 0) && check_wrapped) { | |
406 | return 1; | |
407 | } | |
408 | ||
36bdbc3f AP |
409 | dev_dbg(fe->dvb->device, "%s: drift:%i inversion:%i auto_step:%i " \ |
410 | "auto_sub_step:%i started_auto_step:%i\n", | |
411 | __func__, fepriv->lnb_drift, fepriv->inversion, | |
412 | fepriv->auto_step, fepriv->auto_sub_step, | |
413 | fepriv->started_auto_step); | |
1da177e4 LT |
414 | |
415 | /* set the frontend itself */ | |
ac3852c4 | 416 | c->frequency += fepriv->lnb_drift; |
1da177e4 | 417 | if (autoinversion) |
ac3852c4 MCC |
418 | c->inversion = fepriv->inversion; |
419 | tmp = *c; | |
dea74869 | 420 | if (fe->ops.set_frontend) |
bc9cd273 | 421 | fe_set_err = fe->ops.set_frontend(fe); |
ac3852c4 | 422 | *c = tmp; |
01886255 JG |
423 | if (fe_set_err < 0) { |
424 | fepriv->state = FESTATE_ERROR; | |
425 | return fe_set_err; | |
426 | } | |
1da177e4 | 427 | |
ac3852c4 MCC |
428 | c->frequency = original_frequency; |
429 | c->inversion = original_inversion; | |
1da177e4 LT |
430 | |
431 | fepriv->auto_sub_step++; | |
432 | return 0; | |
433 | } | |
434 | ||
36cb557a AQ |
435 | static void dvb_frontend_swzigzag(struct dvb_frontend *fe) |
436 | { | |
0df289a2 | 437 | enum fe_status s = 0; |
01886255 | 438 | int retval = 0; |
36cb557a | 439 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
ac3852c4 | 440 | struct dtv_frontend_properties *c = &fe->dtv_property_cache, tmp; |
36cb557a AQ |
441 | |
442 | /* if we've got no parameters, just keep idling */ | |
443 | if (fepriv->state & FESTATE_IDLE) { | |
444 | fepriv->delay = 3*HZ; | |
445 | fepriv->quality = 0; | |
446 | return; | |
447 | } | |
448 | ||
449 | /* in SCAN mode, we just set the frontend when asked and leave it alone */ | |
450 | if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) { | |
451 | if (fepriv->state & FESTATE_RETUNE) { | |
ac3852c4 | 452 | tmp = *c; |
dea74869 | 453 | if (fe->ops.set_frontend) |
bc9cd273 | 454 | retval = fe->ops.set_frontend(fe); |
ac3852c4 | 455 | *c = tmp; |
01886255 JG |
456 | if (retval < 0) |
457 | fepriv->state = FESTATE_ERROR; | |
458 | else | |
459 | fepriv->state = FESTATE_TUNED; | |
36cb557a AQ |
460 | } |
461 | fepriv->delay = 3*HZ; | |
462 | fepriv->quality = 0; | |
463 | return; | |
464 | } | |
465 | ||
466 | /* get the frontend status */ | |
467 | if (fepriv->state & FESTATE_RETUNE) { | |
468 | s = 0; | |
469 | } else { | |
dea74869 PB |
470 | if (fe->ops.read_status) |
471 | fe->ops.read_status(fe, &s); | |
36cb557a AQ |
472 | if (s != fepriv->status) { |
473 | dvb_frontend_add_event(fe, s); | |
474 | fepriv->status = s; | |
475 | } | |
476 | } | |
477 | ||
478 | /* if we're not tuned, and we have a lock, move to the TUNED state */ | |
479 | if ((fepriv->state & FESTATE_WAITFORLOCK) && (s & FE_HAS_LOCK)) { | |
480 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
481 | fepriv->state = FESTATE_TUNED; | |
482 | ||
483 | /* if we're tuned, then we have determined the correct inversion */ | |
dea74869 | 484 | if ((!(fe->ops.info.caps & FE_CAN_INVERSION_AUTO)) && |
ac3852c4 MCC |
485 | (c->inversion == INVERSION_AUTO)) { |
486 | c->inversion = fepriv->inversion; | |
36cb557a AQ |
487 | } |
488 | return; | |
489 | } | |
490 | ||
491 | /* if we are tuned already, check we're still locked */ | |
492 | if (fepriv->state & FESTATE_TUNED) { | |
493 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
494 | ||
495 | /* we're tuned, and the lock is still good... */ | |
496 | if (s & FE_HAS_LOCK) { | |
497 | return; | |
498 | } else { /* if we _WERE_ tuned, but now don't have a lock */ | |
499 | fepriv->state = FESTATE_ZIGZAG_FAST; | |
500 | fepriv->started_auto_step = fepriv->auto_step; | |
501 | fepriv->check_wrapped = 0; | |
502 | } | |
503 | } | |
504 | ||
505 | /* don't actually do anything if we're in the LOSTLOCK state, | |
506 | * the frontend is set to FE_CAN_RECOVER, and the max_drift is 0 */ | |
507 | if ((fepriv->state & FESTATE_LOSTLOCK) && | |
dea74869 | 508 | (fe->ops.info.caps & FE_CAN_RECOVER) && (fepriv->max_drift == 0)) { |
36cb557a AQ |
509 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); |
510 | return; | |
511 | } | |
512 | ||
513 | /* don't do anything if we're in the DISEQC state, since this | |
514 | * might be someone with a motorized dish controlled by DISEQC. | |
515 | * If its actually a re-tune, there will be a SET_FRONTEND soon enough. */ | |
516 | if (fepriv->state & FESTATE_DISEQC) { | |
517 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
518 | return; | |
519 | } | |
520 | ||
521 | /* if we're in the RETUNE state, set everything up for a brand | |
522 | * new scan, keeping the current inversion setting, as the next | |
523 | * tune is _very_ likely to require the same */ | |
524 | if (fepriv->state & FESTATE_RETUNE) { | |
525 | fepriv->lnb_drift = 0; | |
526 | fepriv->auto_step = 0; | |
527 | fepriv->auto_sub_step = 0; | |
528 | fepriv->started_auto_step = 0; | |
529 | fepriv->check_wrapped = 0; | |
530 | } | |
531 | ||
532 | /* fast zigzag. */ | |
533 | if ((fepriv->state & FESTATE_SEARCHING_FAST) || (fepriv->state & FESTATE_RETUNE)) { | |
534 | fepriv->delay = fepriv->min_delay; | |
535 | ||
2030c032 | 536 | /* perform a tune */ |
01886255 JG |
537 | retval = dvb_frontend_swzigzag_autotune(fe, |
538 | fepriv->check_wrapped); | |
539 | if (retval < 0) { | |
540 | return; | |
541 | } else if (retval) { | |
36cb557a AQ |
542 | /* OK, if we've run out of trials at the fast speed. |
543 | * Drop back to slow for the _next_ attempt */ | |
544 | fepriv->state = FESTATE_SEARCHING_SLOW; | |
545 | fepriv->started_auto_step = fepriv->auto_step; | |
546 | return; | |
547 | } | |
548 | fepriv->check_wrapped = 1; | |
549 | ||
550 | /* if we've just retuned, enter the ZIGZAG_FAST state. | |
551 | * This ensures we cannot return from an | |
552 | * FE_SET_FRONTEND ioctl before the first frontend tune | |
553 | * occurs */ | |
554 | if (fepriv->state & FESTATE_RETUNE) { | |
555 | fepriv->state = FESTATE_TUNING_FAST; | |
556 | } | |
557 | } | |
558 | ||
559 | /* slow zigzag */ | |
560 | if (fepriv->state & FESTATE_SEARCHING_SLOW) { | |
561 | dvb_frontend_swzigzag_update_delay(fepriv, s & FE_HAS_LOCK); | |
562 | ||
563 | /* Note: don't bother checking for wrapping; we stay in this | |
564 | * state until we get a lock */ | |
565 | dvb_frontend_swzigzag_autotune(fe, 0); | |
566 | } | |
567 | } | |
568 | ||
1da177e4 LT |
569 | static int dvb_frontend_is_exiting(struct dvb_frontend *fe) |
570 | { | |
0c53c70f | 571 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 | 572 | |
18ed2860 | 573 | if (fe->exit != DVB_FE_NO_EXIT) |
1da177e4 LT |
574 | return 1; |
575 | ||
576 | if (fepriv->dvbdev->writers == 1) | |
b9d5efcc | 577 | if (time_after_eq(jiffies, fepriv->release_jiffies + |
36cb557a | 578 | dvb_shutdown_timeout * HZ)) |
1da177e4 LT |
579 | return 1; |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
584 | static int dvb_frontend_should_wakeup(struct dvb_frontend *fe) | |
585 | { | |
0c53c70f | 586 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
587 | |
588 | if (fepriv->wakeup) { | |
589 | fepriv->wakeup = 0; | |
590 | return 1; | |
591 | } | |
592 | return dvb_frontend_is_exiting(fe); | |
593 | } | |
594 | ||
595 | static void dvb_frontend_wakeup(struct dvb_frontend *fe) | |
596 | { | |
0c53c70f | 597 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 LT |
598 | |
599 | fepriv->wakeup = 1; | |
600 | wake_up_interruptible(&fepriv->wait_queue); | |
601 | } | |
602 | ||
9239effd MCC |
603 | /** |
604 | * dvb_enable_media_tuner() - tries to enable the DVB tuner | |
605 | * | |
606 | * @fe: struct dvb_frontend pointer | |
607 | * | |
608 | * This function ensures that just one media tuner is enabled for a given | |
609 | * frontend. It has two different behaviors: | |
610 | * - For trivial devices with just one tuner: | |
611 | * it just enables the existing tuner->fe link | |
612 | * - For devices with more than one tuner: | |
613 | * It is up to the driver to implement the logic that will enable one tuner | |
614 | * and disable the other ones. However, if more than one tuner is enabled for | |
615 | * the same frontend, it will print an error message and return -EINVAL. | |
616 | * | |
617 | * At return, it will return the error code returned by media_entity_setup_link, | |
618 | * or 0 if everything is OK, if no tuner is linked to the frontend or if the | |
619 | * mdev is NULL. | |
620 | */ | |
135f9be9 | 621 | #ifdef CONFIG_MEDIA_CONTROLLER_DVB |
9239effd MCC |
622 | static int dvb_enable_media_tuner(struct dvb_frontend *fe) |
623 | { | |
9239effd MCC |
624 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
625 | struct dvb_adapter *adapter = fe->dvb; | |
626 | struct media_device *mdev = adapter->mdev; | |
627 | struct media_entity *entity, *source; | |
628 | struct media_link *link, *found_link = NULL; | |
57208e5e | 629 | int ret, n_links = 0, active_links = 0; |
9239effd | 630 | |
135f9be9 MCC |
631 | fepriv->pipe_start_entity = NULL; |
632 | ||
9239effd MCC |
633 | if (!mdev) |
634 | return 0; | |
635 | ||
636 | entity = fepriv->dvbdev->entity; | |
135f9be9 MCC |
637 | fepriv->pipe_start_entity = entity; |
638 | ||
57208e5e | 639 | list_for_each_entry(link, &entity->links, list) { |
9239effd MCC |
640 | if (link->sink->entity == entity) { |
641 | found_link = link; | |
642 | n_links++; | |
643 | if (link->flags & MEDIA_LNK_FL_ENABLED) | |
644 | active_links++; | |
645 | } | |
646 | } | |
647 | ||
648 | if (!n_links || active_links == 1 || !found_link) | |
649 | return 0; | |
650 | ||
651 | /* | |
652 | * If a frontend has more than one tuner linked, it is up to the driver | |
653 | * to select with one will be the active one, as the frontend core can't | |
654 | * guess. If the driver doesn't do that, it is a bug. | |
655 | */ | |
656 | if (n_links > 1 && active_links != 1) { | |
657 | dev_err(fe->dvb->device, | |
658 | "WARNING: there are %d active links among %d tuners. This is a driver's bug!\n", | |
659 | active_links, n_links); | |
660 | return -EINVAL; | |
661 | } | |
662 | ||
663 | source = found_link->source->entity; | |
135f9be9 | 664 | fepriv->pipe_start_entity = source; |
57208e5e | 665 | list_for_each_entry(link, &source->links, list) { |
9239effd MCC |
666 | struct media_entity *sink; |
667 | int flags = 0; | |
668 | ||
9239effd | 669 | sink = link->sink->entity; |
9239effd MCC |
670 | if (sink == entity) |
671 | flags = MEDIA_LNK_FL_ENABLED; | |
672 | ||
673 | ret = media_entity_setup_link(link, flags); | |
674 | if (ret) { | |
675 | dev_err(fe->dvb->device, | |
676 | "Couldn't change link %s->%s to %s. Error %d\n", | |
677 | source->name, sink->name, | |
678 | flags ? "enabled" : "disabled", | |
679 | ret); | |
680 | return ret; | |
681 | } else | |
682 | dev_dbg(fe->dvb->device, | |
683 | "link %s->%s was %s\n", | |
684 | source->name, sink->name, | |
685 | flags ? "ENABLED" : "disabled"); | |
686 | } | |
9239effd MCC |
687 | return 0; |
688 | } | |
135f9be9 | 689 | #endif |
9239effd | 690 | |
1da177e4 LT |
691 | static int dvb_frontend_thread(void *data) |
692 | { | |
0c53c70f | 693 | struct dvb_frontend *fe = data; |
2ea9a08d | 694 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
0c53c70f | 695 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
0df289a2 | 696 | enum fe_status s; |
c59e7870 | 697 | enum dvbfe_algo algo; |
c1bd57d3 | 698 | #ifdef CONFIG_MEDIA_CONTROLLER_DVB |
9239effd | 699 | int ret; |
c1bd57d3 | 700 | #endif |
c59e7870 | 701 | |
7e072221 | 702 | bool re_tune = false; |
6ae23224 | 703 | bool semheld = false; |
1da177e4 | 704 | |
36bdbc3f | 705 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
1da177e4 | 706 | |
36cb557a AQ |
707 | fepriv->check_wrapped = 0; |
708 | fepriv->quality = 0; | |
709 | fepriv->delay = 3*HZ; | |
1da177e4 | 710 | fepriv->status = 0; |
1da177e4 | 711 | fepriv->wakeup = 0; |
04c56d0e AQ |
712 | fepriv->reinitialise = 0; |
713 | ||
135f9be9 | 714 | #ifdef CONFIG_MEDIA_CONTROLLER_DVB |
9239effd MCC |
715 | ret = dvb_enable_media_tuner(fe); |
716 | if (ret) { | |
717 | /* FIXME: return an error if it fails */ | |
718 | dev_info(fe->dvb->device, | |
719 | "proceeding with FE task\n"); | |
8a26a258 | 720 | } else if (fepriv->pipe_start_entity) { |
135f9be9 MCC |
721 | ret = media_entity_pipeline_start(fepriv->pipe_start_entity, |
722 | &fepriv->pipe); | |
723 | if (ret) | |
724 | return ret; | |
9239effd | 725 | } |
135f9be9 | 726 | #endif |
9239effd | 727 | |
04c56d0e | 728 | dvb_frontend_init(fe); |
1da177e4 | 729 | |
83144186 | 730 | set_freezable(); |
1da177e4 LT |
731 | while (1) { |
732 | up(&fepriv->sem); /* is locked when we enter the thread... */ | |
6591691b | 733 | restart: |
94238e9b | 734 | wait_event_interruptible_timeout(fepriv->wait_queue, |
e42837bc RW |
735 | dvb_frontend_should_wakeup(fe) || kthread_should_stop() |
736 | || freezing(current), | |
8eec1429 HP |
737 | fepriv->delay); |
738 | ||
739 | if (kthread_should_stop() || dvb_frontend_is_exiting(fe)) { | |
1da177e4 | 740 | /* got signal or quitting */ |
6ae23224 JL |
741 | if (!down_interruptible(&fepriv->sem)) |
742 | semheld = true; | |
18ed2860 | 743 | fe->exit = DVB_FE_NORMAL_EXIT; |
1da177e4 LT |
744 | break; |
745 | } | |
746 | ||
8eec1429 | 747 | if (try_to_freeze()) |
6591691b | 748 | goto restart; |
1da177e4 LT |
749 | |
750 | if (down_interruptible(&fepriv->sem)) | |
751 | break; | |
752 | ||
86f40cc3 AQ |
753 | if (fepriv->reinitialise) { |
754 | dvb_frontend_init(fe); | |
42f4e774 | 755 | if (fe->ops.set_tone && fepriv->tone != -1) |
dea74869 | 756 | fe->ops.set_tone(fe, fepriv->tone); |
42f4e774 | 757 | if (fe->ops.set_voltage && fepriv->voltage != -1) |
dea74869 | 758 | fe->ops.set_voltage(fe, fepriv->voltage); |
86f40cc3 AQ |
759 | fepriv->reinitialise = 0; |
760 | } | |
761 | ||
36cb557a | 762 | /* do an iteration of the tuning loop */ |
d772bd03 | 763 | if (fe->ops.get_frontend_algo) { |
c59e7870 MA |
764 | algo = fe->ops.get_frontend_algo(fe); |
765 | switch (algo) { | |
766 | case DVBFE_ALGO_HW: | |
36bdbc3f | 767 | dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__); |
c59e7870 | 768 | |
d772bd03 | 769 | if (fepriv->state & FESTATE_RETUNE) { |
36bdbc3f | 770 | dev_dbg(fe->dvb->device, "%s: Retune requested, FESTATE_RETUNE\n", __func__); |
7e072221 | 771 | re_tune = true; |
d772bd03 | 772 | fepriv->state = FESTATE_TUNED; |
45145b67 SA |
773 | } else { |
774 | re_tune = false; | |
d772bd03 MA |
775 | } |
776 | ||
c59e7870 | 777 | if (fe->ops.tune) |
7e072221 | 778 | fe->ops.tune(fe, re_tune, fepriv->tune_mode_flags, &fepriv->delay, &s); |
c59e7870 | 779 | |
2fac9a0f | 780 | if (s != fepriv->status && !(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) { |
36bdbc3f | 781 | dev_dbg(fe->dvb->device, "%s: state changed, adding current state\n", __func__); |
d772bd03 MA |
782 | dvb_frontend_add_event(fe, s); |
783 | fepriv->status = s; | |
784 | } | |
c59e7870 MA |
785 | break; |
786 | case DVBFE_ALGO_SW: | |
36bdbc3f | 787 | dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__); |
70d90635 | 788 | dvb_frontend_swzigzag(fe); |
c59e7870 MA |
789 | break; |
790 | case DVBFE_ALGO_CUSTOM: | |
36bdbc3f | 791 | dev_dbg(fe->dvb->device, "%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state); |
c59e7870 | 792 | if (fepriv->state & FESTATE_RETUNE) { |
36bdbc3f | 793 | dev_dbg(fe->dvb->device, "%s: Retune requested, FESTAT_RETUNE\n", __func__); |
c59e7870 MA |
794 | fepriv->state = FESTATE_TUNED; |
795 | } | |
796 | /* Case where we are going to search for a carrier | |
797 | * User asked us to retune again for some reason, possibly | |
798 | * requesting a search with a new set of parameters | |
799 | */ | |
800 | if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) { | |
7bcbdf38 | 801 | if (fe->ops.search) { |
41da5320 | 802 | fepriv->algo_status = fe->ops.search(fe); |
c59e7870 MA |
803 | /* We did do a search as was requested, the flags are |
804 | * now unset as well and has the flags wrt to search. | |
805 | */ | |
7bcbdf38 AJ |
806 | } else { |
807 | fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN; | |
808 | } | |
c59e7870 MA |
809 | } |
810 | /* Track the carrier if the search was successful */ | |
1b5d8716 | 811 | if (fepriv->algo_status != DVBFE_ALGO_SEARCH_SUCCESS) { |
7bcbdf38 AJ |
812 | fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN; |
813 | fepriv->delay = HZ / 2; | |
814 | } | |
2ea9a08d | 815 | dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out); |
7bcbdf38 AJ |
816 | fe->ops.read_status(fe, &s); |
817 | if (s != fepriv->status) { | |
818 | dvb_frontend_add_event(fe, s); /* update event list */ | |
819 | fepriv->status = s; | |
820 | if (!(s & FE_HAS_LOCK)) { | |
821 | fepriv->delay = HZ / 10; | |
822 | fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN; | |
823 | } else { | |
824 | fepriv->delay = 60 * HZ; | |
825 | } | |
c59e7870 MA |
826 | } |
827 | break; | |
828 | default: | |
36bdbc3f | 829 | dev_dbg(fe->dvb->device, "%s: UNDEFINED ALGO !\n", __func__); |
c59e7870 MA |
830 | break; |
831 | } | |
832 | } else { | |
4a4edcca | 833 | dvb_frontend_swzigzag(fe); |
c59e7870 | 834 | } |
1da177e4 LT |
835 | } |
836 | ||
135f9be9 | 837 | #ifdef CONFIG_MEDIA_CONTROLLER_DVB |
8a26a258 MCC |
838 | if (fepriv->pipe_start_entity) |
839 | media_entity_pipeline_stop(fepriv->pipe_start_entity); | |
135f9be9 MCC |
840 | fepriv->pipe_start_entity = NULL; |
841 | #endif | |
842 | ||
608f62d6 OE |
843 | if (dvb_powerdown_on_sleep) { |
844 | if (fe->ops.set_voltage) | |
845 | fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF); | |
dea74869 | 846 | if (fe->ops.tuner_ops.sleep) { |
41286d97 DH |
847 | if (fe->ops.i2c_gate_ctrl) |
848 | fe->ops.i2c_gate_ctrl(fe, 1); | |
dea74869 PB |
849 | fe->ops.tuner_ops.sleep(fe); |
850 | if (fe->ops.i2c_gate_ctrl) | |
851 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7eef5dd6 | 852 | } |
dea74869 PB |
853 | if (fe->ops.sleep) |
854 | fe->ops.sleep(fe); | |
1da177e4 LT |
855 | } |
856 | ||
8eec1429 | 857 | fepriv->thread = NULL; |
e36309f5 | 858 | if (kthread_should_stop()) |
18ed2860 | 859 | fe->exit = DVB_FE_DEVICE_REMOVED; |
e36309f5 | 860 | else |
18ed2860 | 861 | fe->exit = DVB_FE_NO_EXIT; |
1da177e4 LT |
862 | mb(); |
863 | ||
6ae23224 JL |
864 | if (semheld) |
865 | up(&fepriv->sem); | |
1da177e4 LT |
866 | dvb_frontend_wakeup(fe); |
867 | return 0; | |
868 | } | |
869 | ||
870 | static void dvb_frontend_stop(struct dvb_frontend *fe) | |
871 | { | |
0c53c70f | 872 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 | 873 | |
36bdbc3f | 874 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
1da177e4 | 875 | |
18ed2860 SK |
876 | if (fe->exit != DVB_FE_DEVICE_REMOVED) |
877 | fe->exit = DVB_FE_NORMAL_EXIT; | |
1da177e4 LT |
878 | mb(); |
879 | ||
8eec1429 | 880 | if (!fepriv->thread) |
1da177e4 LT |
881 | return; |
882 | ||
8eec1429 | 883 | kthread_stop(fepriv->thread); |
ca5be9cd | 884 | |
a0a4714c | 885 | sema_init(&fepriv->sem, 1); |
1da177e4 LT |
886 | fepriv->state = FESTATE_IDLE; |
887 | ||
888 | /* paranoia check in case a signal arrived */ | |
8eec1429 | 889 | if (fepriv->thread) |
36bdbc3f AP |
890 | dev_warn(fe->dvb->device, |
891 | "dvb_frontend_stop: warning: thread %p won't exit\n", | |
8eec1429 | 892 | fepriv->thread); |
1da177e4 LT |
893 | } |
894 | ||
83b75b04 | 895 | /* |
4deea4cb MCC |
896 | * Sleep for the amount of time given by add_usec parameter |
897 | * | |
898 | * This needs to be as precise as possible, as it affects the detection of | |
899 | * the dish tone command at the satellite subsystem. The precision is improved | |
900 | * by using a scheduled msleep followed by udelay for the remainder. | |
83b75b04 | 901 | */ |
9056a23b | 902 | void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec) |
83b75b04 | 903 | { |
a733a41a | 904 | s32 delta; |
83b75b04 | 905 | |
a733a41a | 906 | *waketime = ktime_add_us(*waketime, add_usec); |
6b3f9998 | 907 | delta = ktime_us_delta(ktime_get_boottime(), *waketime); |
83b75b04 N |
908 | if (delta > 2500) { |
909 | msleep((delta - 1500) / 1000); | |
6b3f9998 | 910 | delta = ktime_us_delta(ktime_get_boottime(), *waketime); |
83b75b04 N |
911 | } |
912 | if (delta > 0) | |
913 | udelay(delta); | |
914 | } | |
915 | EXPORT_SYMBOL(dvb_frontend_sleep_until); | |
916 | ||
1da177e4 LT |
917 | static int dvb_frontend_start(struct dvb_frontend *fe) |
918 | { | |
919 | int ret; | |
0c53c70f | 920 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
8eec1429 | 921 | struct task_struct *fe_thread; |
1da177e4 | 922 | |
36bdbc3f | 923 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
1da177e4 | 924 | |
8eec1429 | 925 | if (fepriv->thread) { |
18ed2860 | 926 | if (fe->exit == DVB_FE_NO_EXIT) |
1da177e4 LT |
927 | return 0; |
928 | else | |
929 | dvb_frontend_stop (fe); | |
930 | } | |
931 | ||
932 | if (signal_pending(current)) | |
933 | return -EINTR; | |
934 | if (down_interruptible (&fepriv->sem)) | |
935 | return -EINTR; | |
936 | ||
937 | fepriv->state = FESTATE_IDLE; | |
18ed2860 | 938 | fe->exit = DVB_FE_NO_EXIT; |
8eec1429 | 939 | fepriv->thread = NULL; |
1da177e4 LT |
940 | mb(); |
941 | ||
8eec1429 | 942 | fe_thread = kthread_run(dvb_frontend_thread, fe, |
363c35fc | 943 | "kdvb-ad-%i-fe-%i", fe->dvb->num,fe->id); |
8eec1429 HP |
944 | if (IS_ERR(fe_thread)) { |
945 | ret = PTR_ERR(fe_thread); | |
36bdbc3f AP |
946 | dev_warn(fe->dvb->device, |
947 | "dvb_frontend_start: failed to start kthread (%d)\n", | |
948 | ret); | |
1da177e4 LT |
949 | up(&fepriv->sem); |
950 | return ret; | |
951 | } | |
8eec1429 | 952 | fepriv->thread = fe_thread; |
1da177e4 LT |
953 | return 0; |
954 | } | |
955 | ||
2030c032 | 956 | static void dvb_frontend_get_frequency_limits(struct dvb_frontend *fe, |
c471b331 OE |
957 | u32 *freq_min, u32 *freq_max) |
958 | { | |
959 | *freq_min = max(fe->ops.info.frequency_min, fe->ops.tuner_ops.info.frequency_min); | |
960 | ||
961 | if (fe->ops.info.frequency_max == 0) | |
962 | *freq_max = fe->ops.tuner_ops.info.frequency_max; | |
963 | else if (fe->ops.tuner_ops.info.frequency_max == 0) | |
964 | *freq_max = fe->ops.info.frequency_max; | |
965 | else | |
966 | *freq_max = min(fe->ops.info.frequency_max, fe->ops.tuner_ops.info.frequency_max); | |
967 | ||
968 | if (*freq_min == 0 || *freq_max == 0) | |
36bdbc3f AP |
969 | dev_warn(fe->dvb->device, "DVB: adapter %i frontend %u frequency limits undefined - fix the driver\n", |
970 | fe->dvb->num, fe->id); | |
c471b331 OE |
971 | } |
972 | ||
5bfaadde | 973 | static int dvb_frontend_check_parameters(struct dvb_frontend *fe) |
1fab46f0 | 974 | { |
5bfaadde | 975 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
c471b331 OE |
976 | u32 freq_min; |
977 | u32 freq_max; | |
978 | ||
1fab46f0 | 979 | /* range check: frequency */ |
2030c032 | 980 | dvb_frontend_get_frequency_limits(fe, &freq_min, &freq_max); |
5bfaadde MCC |
981 | if ((freq_min && c->frequency < freq_min) || |
982 | (freq_max && c->frequency > freq_max)) { | |
36bdbc3f AP |
983 | dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i frequency %u out of range (%u..%u)\n", |
984 | fe->dvb->num, fe->id, c->frequency, | |
985 | freq_min, freq_max); | |
1fab46f0 OE |
986 | return -EINVAL; |
987 | } | |
988 | ||
989 | /* range check: symbol rate */ | |
5bfaadde MCC |
990 | switch (c->delivery_system) { |
991 | case SYS_DVBS: | |
992 | case SYS_DVBS2: | |
993 | case SYS_TURBO: | |
994 | case SYS_DVBC_ANNEX_A: | |
995 | case SYS_DVBC_ANNEX_C: | |
1fab46f0 | 996 | if ((fe->ops.info.symbol_rate_min && |
5bfaadde | 997 | c->symbol_rate < fe->ops.info.symbol_rate_min) || |
1fab46f0 | 998 | (fe->ops.info.symbol_rate_max && |
5bfaadde | 999 | c->symbol_rate > fe->ops.info.symbol_rate_max)) { |
36bdbc3f AP |
1000 | dev_warn(fe->dvb->device, "DVB: adapter %i frontend %i symbol rate %u out of range (%u..%u)\n", |
1001 | fe->dvb->num, fe->id, c->symbol_rate, | |
1002 | fe->ops.info.symbol_rate_min, | |
1003 | fe->ops.info.symbol_rate_max); | |
1fab46f0 OE |
1004 | return -EINVAL; |
1005 | } | |
5bfaadde MCC |
1006 | default: |
1007 | break; | |
1fab46f0 OE |
1008 | } |
1009 | ||
1010 | return 0; | |
1011 | } | |
1012 | ||
b6e760f3 PB |
1013 | static int dvb_frontend_clear_cache(struct dvb_frontend *fe) |
1014 | { | |
50727719 | 1015 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
b6e760f3 | 1016 | int i; |
149709f5 | 1017 | u32 delsys; |
b6e760f3 | 1018 | |
149709f5 | 1019 | delsys = c->delivery_system; |
808d24d6 | 1020 | memset(c, 0, offsetof(struct dtv_frontend_properties, strength)); |
149709f5 | 1021 | c->delivery_system = delsys; |
50727719 AO |
1022 | |
1023 | c->state = DTV_CLEAR; | |
26c924fe | 1024 | |
36bdbc3f AP |
1025 | dev_dbg(fe->dvb->device, "%s: Clearing cache for delivery system %d\n", |
1026 | __func__, c->delivery_system); | |
26c924fe | 1027 | |
50727719 | 1028 | c->transmission_mode = TRANSMISSION_MODE_AUTO; |
26c924fe | 1029 | c->bandwidth_hz = 0; /* AUTO */ |
50727719 AO |
1030 | c->guard_interval = GUARD_INTERVAL_AUTO; |
1031 | c->hierarchy = HIERARCHY_AUTO; | |
26c924fe | 1032 | c->symbol_rate = 0; |
50727719 AO |
1033 | c->code_rate_HP = FEC_AUTO; |
1034 | c->code_rate_LP = FEC_AUTO; | |
26c924fe | 1035 | c->fec_inner = FEC_AUTO; |
39ce61a8 | 1036 | c->rolloff = ROLLOFF_AUTO; |
26c924fe | 1037 | c->voltage = SEC_VOLTAGE_OFF; |
26c924fe MCC |
1038 | c->sectone = SEC_TONE_OFF; |
1039 | c->pilot = PILOT_AUTO; | |
50727719 | 1040 | |
a520ca97 MCC |
1041 | c->isdbt_partial_reception = 0; |
1042 | c->isdbt_sb_mode = 0; | |
1043 | c->isdbt_sb_subchannel = 0; | |
1044 | c->isdbt_sb_segment_idx = 0; | |
1045 | c->isdbt_sb_segment_count = 0; | |
1046 | c->isdbt_layer_enabled = 0; | |
b6e760f3 | 1047 | for (i = 0; i < 3; i++) { |
50727719 AO |
1048 | c->layer[i].fec = FEC_AUTO; |
1049 | c->layer[i].modulation = QAM_AUTO; | |
a520ca97 MCC |
1050 | c->layer[i].interleaving = 0; |
1051 | c->layer[i].segment_count = 0; | |
b6e760f3 PB |
1052 | } |
1053 | ||
287cefd0 | 1054 | c->stream_id = NO_STREAM_ID_FILTER; |
26c924fe | 1055 | |
5bfaadde MCC |
1056 | switch (c->delivery_system) { |
1057 | case SYS_DVBS: | |
1058 | case SYS_DVBS2: | |
1059 | case SYS_TURBO: | |
1060 | c->modulation = QPSK; /* implied for DVB-S in legacy API */ | |
1061 | c->rolloff = ROLLOFF_35;/* implied for DVB-S */ | |
1062 | break; | |
1063 | case SYS_ATSC: | |
1064 | c->modulation = VSB_8; | |
1065 | break; | |
8e281faf AT |
1066 | case SYS_ISDBS: |
1067 | c->symbol_rate = 28860000; | |
1068 | c->rolloff = ROLLOFF_35; | |
1069 | c->bandwidth_hz = c->symbol_rate / 100 * 135; | |
1070 | break; | |
5bfaadde MCC |
1071 | default: |
1072 | c->modulation = QAM_AUTO; | |
1073 | break; | |
1074 | } | |
1075 | ||
33eebec5 AP |
1076 | c->lna = LNA_AUTO; |
1077 | ||
b6e760f3 PB |
1078 | return 0; |
1079 | } | |
1080 | ||
1081 | #define _DTV_CMD(n, s, b) \ | |
1082 | [n] = { \ | |
1083 | .name = #n, \ | |
1084 | .cmd = n, \ | |
1085 | .set = s,\ | |
1086 | .buffer = b \ | |
1087 | } | |
1088 | ||
ec05a642 | 1089 | static struct dtv_cmds_h dtv_cmds[DTV_MAX_COMMAND + 1] = { |
06d3a396 MCC |
1090 | _DTV_CMD(DTV_TUNE, 1, 0), |
1091 | _DTV_CMD(DTV_CLEAR, 1, 0), | |
6b73eeaf ST |
1092 | |
1093 | /* Set */ | |
06d3a396 MCC |
1094 | _DTV_CMD(DTV_FREQUENCY, 1, 0), |
1095 | _DTV_CMD(DTV_BANDWIDTH_HZ, 1, 0), | |
1096 | _DTV_CMD(DTV_MODULATION, 1, 0), | |
1097 | _DTV_CMD(DTV_INVERSION, 1, 0), | |
1098 | _DTV_CMD(DTV_DISEQC_MASTER, 1, 1), | |
1099 | _DTV_CMD(DTV_SYMBOL_RATE, 1, 0), | |
1100 | _DTV_CMD(DTV_INNER_FEC, 1, 0), | |
1101 | _DTV_CMD(DTV_VOLTAGE, 1, 0), | |
1102 | _DTV_CMD(DTV_TONE, 1, 0), | |
1103 | _DTV_CMD(DTV_PILOT, 1, 0), | |
1104 | _DTV_CMD(DTV_ROLLOFF, 1, 0), | |
1105 | _DTV_CMD(DTV_DELIVERY_SYSTEM, 1, 0), | |
1106 | _DTV_CMD(DTV_HIERARCHY, 1, 0), | |
1107 | _DTV_CMD(DTV_CODE_RATE_HP, 1, 0), | |
1108 | _DTV_CMD(DTV_CODE_RATE_LP, 1, 0), | |
1109 | _DTV_CMD(DTV_GUARD_INTERVAL, 1, 0), | |
1110 | _DTV_CMD(DTV_TRANSMISSION_MODE, 1, 0), | |
224b6642 | 1111 | _DTV_CMD(DTV_INTERLEAVING, 1, 0), |
b6e760f3 PB |
1112 | |
1113 | _DTV_CMD(DTV_ISDBT_PARTIAL_RECEPTION, 1, 0), | |
1114 | _DTV_CMD(DTV_ISDBT_SOUND_BROADCASTING, 1, 0), | |
1115 | _DTV_CMD(DTV_ISDBT_SB_SUBCHANNEL_ID, 1, 0), | |
1116 | _DTV_CMD(DTV_ISDBT_SB_SEGMENT_IDX, 1, 0), | |
1117 | _DTV_CMD(DTV_ISDBT_SB_SEGMENT_COUNT, 1, 0), | |
e7b7949a | 1118 | _DTV_CMD(DTV_ISDBT_LAYER_ENABLED, 1, 0), |
b6e760f3 PB |
1119 | _DTV_CMD(DTV_ISDBT_LAYERA_FEC, 1, 0), |
1120 | _DTV_CMD(DTV_ISDBT_LAYERA_MODULATION, 1, 0), | |
1121 | _DTV_CMD(DTV_ISDBT_LAYERA_SEGMENT_COUNT, 1, 0), | |
1122 | _DTV_CMD(DTV_ISDBT_LAYERA_TIME_INTERLEAVING, 1, 0), | |
1123 | _DTV_CMD(DTV_ISDBT_LAYERB_FEC, 1, 0), | |
1124 | _DTV_CMD(DTV_ISDBT_LAYERB_MODULATION, 1, 0), | |
1125 | _DTV_CMD(DTV_ISDBT_LAYERB_SEGMENT_COUNT, 1, 0), | |
1126 | _DTV_CMD(DTV_ISDBT_LAYERB_TIME_INTERLEAVING, 1, 0), | |
1127 | _DTV_CMD(DTV_ISDBT_LAYERC_FEC, 1, 0), | |
1128 | _DTV_CMD(DTV_ISDBT_LAYERC_MODULATION, 1, 0), | |
1129 | _DTV_CMD(DTV_ISDBT_LAYERC_SEGMENT_COUNT, 1, 0), | |
1130 | _DTV_CMD(DTV_ISDBT_LAYERC_TIME_INTERLEAVING, 1, 0), | |
1131 | ||
287cefd0 EP |
1132 | _DTV_CMD(DTV_STREAM_ID, 1, 0), |
1133 | _DTV_CMD(DTV_DVBT2_PLP_ID_LEGACY, 1, 0), | |
8a2697ab | 1134 | _DTV_CMD(DTV_LNA, 1, 0), |
98293ef3 | 1135 | |
6b73eeaf | 1136 | /* Get */ |
06d3a396 MCC |
1137 | _DTV_CMD(DTV_DISEQC_SLAVE_REPLY, 0, 1), |
1138 | _DTV_CMD(DTV_API_VERSION, 0, 0), | |
ba2780c7 MA |
1139 | |
1140 | _DTV_CMD(DTV_ENUM_DELSYS, 0, 0), | |
ca689488 MK |
1141 | |
1142 | _DTV_CMD(DTV_ATSCMH_PARADE_ID, 1, 0), | |
1143 | _DTV_CMD(DTV_ATSCMH_RS_FRAME_ENSEMBLE, 1, 0), | |
1144 | ||
1145 | _DTV_CMD(DTV_ATSCMH_FIC_VER, 0, 0), | |
ca689488 MK |
1146 | _DTV_CMD(DTV_ATSCMH_NOG, 0, 0), |
1147 | _DTV_CMD(DTV_ATSCMH_TNOG, 0, 0), | |
1148 | _DTV_CMD(DTV_ATSCMH_SGN, 0, 0), | |
1149 | _DTV_CMD(DTV_ATSCMH_PRC, 0, 0), | |
1150 | _DTV_CMD(DTV_ATSCMH_RS_FRAME_MODE, 0, 0), | |
ca689488 MK |
1151 | _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_PRI, 0, 0), |
1152 | _DTV_CMD(DTV_ATSCMH_RS_CODE_MODE_SEC, 0, 0), | |
1153 | _DTV_CMD(DTV_ATSCMH_SCCC_BLOCK_MODE, 0, 0), | |
1154 | _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_A, 0, 0), | |
1155 | _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_B, 0, 0), | |
1156 | _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_C, 0, 0), | |
1157 | _DTV_CMD(DTV_ATSCMH_SCCC_CODE_MODE_D, 0, 0), | |
7cd4ece5 MCC |
1158 | |
1159 | /* Statistics API */ | |
1160 | _DTV_CMD(DTV_STAT_SIGNAL_STRENGTH, 0, 0), | |
1161 | _DTV_CMD(DTV_STAT_CNR, 0, 0), | |
1162 | _DTV_CMD(DTV_STAT_PRE_ERROR_BIT_COUNT, 0, 0), | |
1163 | _DTV_CMD(DTV_STAT_PRE_TOTAL_BIT_COUNT, 0, 0), | |
1164 | _DTV_CMD(DTV_STAT_POST_ERROR_BIT_COUNT, 0, 0), | |
1165 | _DTV_CMD(DTV_STAT_POST_TOTAL_BIT_COUNT, 0, 0), | |
1166 | _DTV_CMD(DTV_STAT_ERROR_BLOCK_COUNT, 0, 0), | |
1167 | _DTV_CMD(DTV_STAT_TOTAL_BLOCK_COUNT, 0, 0), | |
6b73eeaf ST |
1168 | }; |
1169 | ||
c29ebb64 MCC |
1170 | static void dtv_property_dump(struct dvb_frontend *fe, |
1171 | bool is_set, | |
1172 | struct dtv_property *tvp) | |
6b73eeaf ST |
1173 | { |
1174 | int i; | |
1175 | ||
106ff9e0 | 1176 | if (tvp->cmd <= 0 || tvp->cmd > DTV_MAX_COMMAND) { |
c29ebb64 MCC |
1177 | dev_warn(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x undefined\n", |
1178 | __func__, | |
1179 | is_set ? "SET" : "GET", | |
1180 | tvp->cmd); | |
4aae8efb DB |
1181 | return; |
1182 | } | |
1183 | ||
c29ebb64 MCC |
1184 | dev_dbg(fe->dvb->device, "%s: %s tvp.cmd = 0x%08x (%s)\n", __func__, |
1185 | is_set ? "SET" : "GET", | |
1186 | tvp->cmd, | |
1187 | dtv_cmds[tvp->cmd].name); | |
6b73eeaf | 1188 | |
36bdbc3f AP |
1189 | if (dtv_cmds[tvp->cmd].buffer) { |
1190 | dev_dbg(fe->dvb->device, "%s: tvp.u.buffer.len = 0x%02x\n", | |
1191 | __func__, tvp->u.buffer.len); | |
6b73eeaf ST |
1192 | |
1193 | for(i = 0; i < tvp->u.buffer.len; i++) | |
36bdbc3f AP |
1194 | dev_dbg(fe->dvb->device, |
1195 | "%s: tvp.u.buffer.data[0x%02x] = 0x%02x\n", | |
1196 | __func__, i, tvp->u.buffer.data[i]); | |
1197 | } else { | |
1198 | dev_dbg(fe->dvb->device, "%s: tvp.u.data = 0x%08x\n", __func__, | |
1199 | tvp->u.data); | |
1200 | } | |
6b73eeaf ST |
1201 | } |
1202 | ||
ee33c525 ST |
1203 | /* Synchronise the legacy tuning parameters into the cache, so that demodulator |
1204 | * drivers can use a single set_frontend tuning function, regardless of whether | |
1205 | * it's being used for the legacy or new API, reducing code and complexity. | |
1206 | */ | |
5bfaadde MCC |
1207 | static int dtv_property_cache_sync(struct dvb_frontend *fe, |
1208 | struct dtv_frontend_properties *c, | |
1209 | const struct dvb_frontend_parameters *p) | |
ee33c525 | 1210 | { |
ee33c525 ST |
1211 | c->frequency = p->frequency; |
1212 | c->inversion = p->inversion; | |
1213 | ||
5bfaadde MCC |
1214 | switch (dvbv3_type(c->delivery_system)) { |
1215 | case DVBV3_QPSK: | |
36bdbc3f | 1216 | dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__); |
ee33c525 ST |
1217 | c->symbol_rate = p->u.qpsk.symbol_rate; |
1218 | c->fec_inner = p->u.qpsk.fec_inner; | |
1219 | break; | |
5bfaadde | 1220 | case DVBV3_QAM: |
36bdbc3f | 1221 | dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__); |
ee33c525 ST |
1222 | c->symbol_rate = p->u.qam.symbol_rate; |
1223 | c->fec_inner = p->u.qam.fec_inner; | |
1224 | c->modulation = p->u.qam.modulation; | |
1225 | break; | |
5bfaadde | 1226 | case DVBV3_OFDM: |
36bdbc3f AP |
1227 | dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__); |
1228 | ||
9a27e6a0 MCC |
1229 | switch (p->u.ofdm.bandwidth) { |
1230 | case BANDWIDTH_10_MHZ: | |
1231 | c->bandwidth_hz = 10000000; | |
1232 | break; | |
1233 | case BANDWIDTH_8_MHZ: | |
75b7f943 | 1234 | c->bandwidth_hz = 8000000; |
9a27e6a0 MCC |
1235 | break; |
1236 | case BANDWIDTH_7_MHZ: | |
1237 | c->bandwidth_hz = 7000000; | |
1238 | break; | |
1239 | case BANDWIDTH_6_MHZ: | |
1240 | c->bandwidth_hz = 6000000; | |
1241 | break; | |
1242 | case BANDWIDTH_5_MHZ: | |
1243 | c->bandwidth_hz = 5000000; | |
1244 | break; | |
1245 | case BANDWIDTH_1_712_MHZ: | |
1246 | c->bandwidth_hz = 1712000; | |
1247 | break; | |
1248 | case BANDWIDTH_AUTO: | |
75b7f943 | 1249 | c->bandwidth_hz = 0; |
9a27e6a0 MCC |
1250 | } |
1251 | ||
ee33c525 ST |
1252 | c->code_rate_HP = p->u.ofdm.code_rate_HP; |
1253 | c->code_rate_LP = p->u.ofdm.code_rate_LP; | |
1254 | c->modulation = p->u.ofdm.constellation; | |
1255 | c->transmission_mode = p->u.ofdm.transmission_mode; | |
1256 | c->guard_interval = p->u.ofdm.guard_interval; | |
1257 | c->hierarchy = p->u.ofdm.hierarchy_information; | |
1258 | break; | |
5bfaadde | 1259 | case DVBV3_ATSC: |
36bdbc3f | 1260 | dev_dbg(fe->dvb->device, "%s: Preparing ATSC req\n", __func__); |
ee33c525 | 1261 | c->modulation = p->u.vsb.modulation; |
ca689488 MK |
1262 | if (c->delivery_system == SYS_ATSCMH) |
1263 | break; | |
80a773c9 ST |
1264 | if ((c->modulation == VSB_8) || (c->modulation == VSB_16)) |
1265 | c->delivery_system = SYS_ATSC; | |
1266 | else | |
1267 | c->delivery_system = SYS_DVBC_ANNEX_B; | |
ee33c525 | 1268 | break; |
5bfaadde | 1269 | case DVBV3_UNKNOWN: |
36bdbc3f AP |
1270 | dev_err(fe->dvb->device, |
1271 | "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n", | |
1272 | __func__, c->delivery_system); | |
5bfaadde | 1273 | return -EINVAL; |
ee33c525 | 1274 | } |
5bfaadde MCC |
1275 | |
1276 | return 0; | |
ee33c525 ST |
1277 | } |
1278 | ||
d5748f10 ST |
1279 | /* Ensure the cached values are set correctly in the frontend |
1280 | * legacy tuning structures, for the advanced tuning API. | |
1281 | */ | |
2ea9a08d MCC |
1282 | static int |
1283 | dtv_property_legacy_params_sync(struct dvb_frontend *fe, | |
1284 | const struct dtv_frontend_properties *c, | |
1285 | struct dvb_frontend_parameters *p) | |
6b73eeaf | 1286 | { |
d5748f10 ST |
1287 | p->frequency = c->frequency; |
1288 | p->inversion = c->inversion; | |
6b73eeaf | 1289 | |
5bfaadde MCC |
1290 | switch (dvbv3_type(c->delivery_system)) { |
1291 | case DVBV3_UNKNOWN: | |
36bdbc3f AP |
1292 | dev_err(fe->dvb->device, |
1293 | "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n", | |
1294 | __func__, c->delivery_system); | |
5bfaadde MCC |
1295 | return -EINVAL; |
1296 | case DVBV3_QPSK: | |
36bdbc3f | 1297 | dev_dbg(fe->dvb->device, "%s: Preparing QPSK req\n", __func__); |
d5748f10 ST |
1298 | p->u.qpsk.symbol_rate = c->symbol_rate; |
1299 | p->u.qpsk.fec_inner = c->fec_inner; | |
1300 | break; | |
5bfaadde | 1301 | case DVBV3_QAM: |
36bdbc3f | 1302 | dev_dbg(fe->dvb->device, "%s: Preparing QAM req\n", __func__); |
d5748f10 ST |
1303 | p->u.qam.symbol_rate = c->symbol_rate; |
1304 | p->u.qam.fec_inner = c->fec_inner; | |
1305 | p->u.qam.modulation = c->modulation; | |
1306 | break; | |
5bfaadde | 1307 | case DVBV3_OFDM: |
36bdbc3f | 1308 | dev_dbg(fe->dvb->device, "%s: Preparing OFDM req\n", __func__); |
9a27e6a0 MCC |
1309 | switch (c->bandwidth_hz) { |
1310 | case 10000000: | |
1311 | p->u.ofdm.bandwidth = BANDWIDTH_10_MHZ; | |
1312 | break; | |
1313 | case 8000000: | |
75b7f943 | 1314 | p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ; |
9a27e6a0 MCC |
1315 | break; |
1316 | case 7000000: | |
1317 | p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ; | |
1318 | break; | |
1319 | case 6000000: | |
1320 | p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ; | |
1321 | break; | |
1322 | case 5000000: | |
1323 | p->u.ofdm.bandwidth = BANDWIDTH_5_MHZ; | |
1324 | break; | |
1325 | case 1712000: | |
1326 | p->u.ofdm.bandwidth = BANDWIDTH_1_712_MHZ; | |
1327 | break; | |
1328 | case 0: | |
1329 | default: | |
75b7f943 | 1330 | p->u.ofdm.bandwidth = BANDWIDTH_AUTO; |
9a27e6a0 | 1331 | } |
d5748f10 ST |
1332 | p->u.ofdm.code_rate_HP = c->code_rate_HP; |
1333 | p->u.ofdm.code_rate_LP = c->code_rate_LP; | |
1334 | p->u.ofdm.constellation = c->modulation; | |
1335 | p->u.ofdm.transmission_mode = c->transmission_mode; | |
1336 | p->u.ofdm.guard_interval = c->guard_interval; | |
1337 | p->u.ofdm.hierarchy_information = c->hierarchy; | |
1338 | break; | |
5bfaadde | 1339 | case DVBV3_ATSC: |
36bdbc3f | 1340 | dev_dbg(fe->dvb->device, "%s: Preparing VSB req\n", __func__); |
d5748f10 ST |
1341 | p->u.vsb.modulation = c->modulation; |
1342 | break; | |
1343 | } | |
5bfaadde | 1344 | return 0; |
6b73eeaf ST |
1345 | } |
1346 | ||
a689e365 MCC |
1347 | /** |
1348 | * dtv_get_frontend - calls a callback for retrieving DTV parameters | |
1349 | * @fe: struct dvb_frontend pointer | |
1350 | * @c: struct dtv_frontend_properties pointer (DVBv5 cache) | |
1351 | * @p_out struct dvb_frontend_parameters pointer (DVBv3 FE struct) | |
1352 | * | |
1353 | * This routine calls either the DVBv3 or DVBv5 get_frontend call. | |
1354 | * If c is not null, it will update the DVBv5 cache struct pointed by it. | |
1355 | * If p_out is not null, it will update the DVBv3 params pointed by it. | |
1356 | */ | |
1357 | static int dtv_get_frontend(struct dvb_frontend *fe, | |
2ea9a08d | 1358 | struct dtv_frontend_properties *c, |
a689e365 MCC |
1359 | struct dvb_frontend_parameters *p_out) |
1360 | { | |
a689e365 MCC |
1361 | int r; |
1362 | ||
a689e365 | 1363 | if (fe->ops.get_frontend) { |
7e3e68bc | 1364 | r = fe->ops.get_frontend(fe, c); |
a689e365 MCC |
1365 | if (unlikely(r < 0)) |
1366 | return r; | |
7c61d80a | 1367 | if (p_out) |
2ea9a08d | 1368 | dtv_property_legacy_params_sync(fe, c, p_out); |
a689e365 MCC |
1369 | return 0; |
1370 | } | |
1371 | ||
7c61d80a | 1372 | /* As everything is in cache, get_frontend fops are always supported */ |
b1e9a650 | 1373 | return 0; |
a689e365 MCC |
1374 | } |
1375 | ||
16ef8def | 1376 | static int dvb_frontend_ioctl_legacy(struct file *file, |
13c97bf5 | 1377 | unsigned int cmd, void *parg); |
16ef8def | 1378 | static int dvb_frontend_ioctl_properties(struct file *file, |
13c97bf5 ST |
1379 | unsigned int cmd, void *parg); |
1380 | ||
072ce0c5 | 1381 | static int dtv_property_process_get(struct dvb_frontend *fe, |
a689e365 | 1382 | const struct dtv_frontend_properties *c, |
072ce0c5 | 1383 | struct dtv_property *tvp, |
16ef8def | 1384 | struct file *file) |
363429a0 | 1385 | { |
5bfaadde | 1386 | int r, ncaps; |
bfbf2dae | 1387 | |
363429a0 | 1388 | switch(tvp->cmd) { |
ba2780c7 | 1389 | case DTV_ENUM_DELSYS: |
5bfaadde | 1390 | ncaps = 0; |
0123f29c | 1391 | while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) { |
5bfaadde MCC |
1392 | tvp->u.buffer.data[ncaps] = fe->ops.delsys[ncaps]; |
1393 | ncaps++; | |
1394 | } | |
1395 | tvp->u.buffer.len = ncaps; | |
ba2780c7 | 1396 | break; |
363429a0 | 1397 | case DTV_FREQUENCY: |
50727719 | 1398 | tvp->u.data = c->frequency; |
363429a0 ST |
1399 | break; |
1400 | case DTV_MODULATION: | |
50727719 | 1401 | tvp->u.data = c->modulation; |
363429a0 | 1402 | break; |
75b7f943 | 1403 | case DTV_BANDWIDTH_HZ: |
50727719 | 1404 | tvp->u.data = c->bandwidth_hz; |
363429a0 ST |
1405 | break; |
1406 | case DTV_INVERSION: | |
50727719 | 1407 | tvp->u.data = c->inversion; |
363429a0 ST |
1408 | break; |
1409 | case DTV_SYMBOL_RATE: | |
50727719 | 1410 | tvp->u.data = c->symbol_rate; |
363429a0 ST |
1411 | break; |
1412 | case DTV_INNER_FEC: | |
50727719 | 1413 | tvp->u.data = c->fec_inner; |
363429a0 ST |
1414 | break; |
1415 | case DTV_PILOT: | |
50727719 | 1416 | tvp->u.data = c->pilot; |
363429a0 ST |
1417 | break; |
1418 | case DTV_ROLLOFF: | |
50727719 | 1419 | tvp->u.data = c->rolloff; |
363429a0 ST |
1420 | break; |
1421 | case DTV_DELIVERY_SYSTEM: | |
50727719 | 1422 | tvp->u.data = c->delivery_system; |
363429a0 | 1423 | break; |
363429a0 | 1424 | case DTV_VOLTAGE: |
50727719 | 1425 | tvp->u.data = c->voltage; |
363429a0 ST |
1426 | break; |
1427 | case DTV_TONE: | |
50727719 | 1428 | tvp->u.data = c->sectone; |
363429a0 | 1429 | break; |
eacf8d8d ST |
1430 | case DTV_API_VERSION: |
1431 | tvp->u.data = (DVB_API_VERSION << 8) | DVB_API_VERSION_MINOR; | |
1432 | break; | |
a4de91be | 1433 | case DTV_CODE_RATE_HP: |
50727719 | 1434 | tvp->u.data = c->code_rate_HP; |
a4de91be ST |
1435 | break; |
1436 | case DTV_CODE_RATE_LP: | |
50727719 | 1437 | tvp->u.data = c->code_rate_LP; |
a4de91be | 1438 | break; |
b87625f0 | 1439 | case DTV_GUARD_INTERVAL: |
50727719 | 1440 | tvp->u.data = c->guard_interval; |
b87625f0 ST |
1441 | break; |
1442 | case DTV_TRANSMISSION_MODE: | |
50727719 | 1443 | tvp->u.data = c->transmission_mode; |
b87625f0 | 1444 | break; |
ef526f42 | 1445 | case DTV_HIERARCHY: |
50727719 | 1446 | tvp->u.data = c->hierarchy; |
ef526f42 | 1447 | break; |
224b6642 AP |
1448 | case DTV_INTERLEAVING: |
1449 | tvp->u.data = c->interleaving; | |
1450 | break; | |
b6e760f3 PB |
1451 | |
1452 | /* ISDB-T Support here */ | |
1453 | case DTV_ISDBT_PARTIAL_RECEPTION: | |
50727719 | 1454 | tvp->u.data = c->isdbt_partial_reception; |
b6e760f3 PB |
1455 | break; |
1456 | case DTV_ISDBT_SOUND_BROADCASTING: | |
50727719 | 1457 | tvp->u.data = c->isdbt_sb_mode; |
b6e760f3 PB |
1458 | break; |
1459 | case DTV_ISDBT_SB_SUBCHANNEL_ID: | |
50727719 | 1460 | tvp->u.data = c->isdbt_sb_subchannel; |
b6e760f3 PB |
1461 | break; |
1462 | case DTV_ISDBT_SB_SEGMENT_IDX: | |
50727719 | 1463 | tvp->u.data = c->isdbt_sb_segment_idx; |
b6e760f3 PB |
1464 | break; |
1465 | case DTV_ISDBT_SB_SEGMENT_COUNT: | |
50727719 | 1466 | tvp->u.data = c->isdbt_sb_segment_count; |
b6e760f3 | 1467 | break; |
e7b7949a | 1468 | case DTV_ISDBT_LAYER_ENABLED: |
50727719 | 1469 | tvp->u.data = c->isdbt_layer_enabled; |
e7b7949a | 1470 | break; |
b6e760f3 | 1471 | case DTV_ISDBT_LAYERA_FEC: |
50727719 | 1472 | tvp->u.data = c->layer[0].fec; |
b6e760f3 PB |
1473 | break; |
1474 | case DTV_ISDBT_LAYERA_MODULATION: | |
50727719 | 1475 | tvp->u.data = c->layer[0].modulation; |
b6e760f3 PB |
1476 | break; |
1477 | case DTV_ISDBT_LAYERA_SEGMENT_COUNT: | |
50727719 | 1478 | tvp->u.data = c->layer[0].segment_count; |
b6e760f3 PB |
1479 | break; |
1480 | case DTV_ISDBT_LAYERA_TIME_INTERLEAVING: | |
50727719 | 1481 | tvp->u.data = c->layer[0].interleaving; |
b6e760f3 PB |
1482 | break; |
1483 | case DTV_ISDBT_LAYERB_FEC: | |
50727719 | 1484 | tvp->u.data = c->layer[1].fec; |
b6e760f3 PB |
1485 | break; |
1486 | case DTV_ISDBT_LAYERB_MODULATION: | |
50727719 | 1487 | tvp->u.data = c->layer[1].modulation; |
b6e760f3 PB |
1488 | break; |
1489 | case DTV_ISDBT_LAYERB_SEGMENT_COUNT: | |
50727719 | 1490 | tvp->u.data = c->layer[1].segment_count; |
b6e760f3 PB |
1491 | break; |
1492 | case DTV_ISDBT_LAYERB_TIME_INTERLEAVING: | |
50727719 | 1493 | tvp->u.data = c->layer[1].interleaving; |
b6e760f3 PB |
1494 | break; |
1495 | case DTV_ISDBT_LAYERC_FEC: | |
50727719 | 1496 | tvp->u.data = c->layer[2].fec; |
b6e760f3 PB |
1497 | break; |
1498 | case DTV_ISDBT_LAYERC_MODULATION: | |
50727719 | 1499 | tvp->u.data = c->layer[2].modulation; |
b6e760f3 PB |
1500 | break; |
1501 | case DTV_ISDBT_LAYERC_SEGMENT_COUNT: | |
50727719 | 1502 | tvp->u.data = c->layer[2].segment_count; |
b6e760f3 PB |
1503 | break; |
1504 | case DTV_ISDBT_LAYERC_TIME_INTERLEAVING: | |
50727719 | 1505 | tvp->u.data = c->layer[2].interleaving; |
b6e760f3 | 1506 | break; |
287cefd0 EP |
1507 | |
1508 | /* Multistream support */ | |
1509 | case DTV_STREAM_ID: | |
1510 | case DTV_DVBT2_PLP_ID_LEGACY: | |
1511 | tvp->u.data = c->stream_id; | |
94d56ffa | 1512 | break; |
ca689488 MK |
1513 | |
1514 | /* ATSC-MH */ | |
1515 | case DTV_ATSCMH_FIC_VER: | |
1516 | tvp->u.data = fe->dtv_property_cache.atscmh_fic_ver; | |
1517 | break; | |
1518 | case DTV_ATSCMH_PARADE_ID: | |
1519 | tvp->u.data = fe->dtv_property_cache.atscmh_parade_id; | |
1520 | break; | |
1521 | case DTV_ATSCMH_NOG: | |
1522 | tvp->u.data = fe->dtv_property_cache.atscmh_nog; | |
1523 | break; | |
1524 | case DTV_ATSCMH_TNOG: | |
1525 | tvp->u.data = fe->dtv_property_cache.atscmh_tnog; | |
1526 | break; | |
1527 | case DTV_ATSCMH_SGN: | |
1528 | tvp->u.data = fe->dtv_property_cache.atscmh_sgn; | |
1529 | break; | |
1530 | case DTV_ATSCMH_PRC: | |
1531 | tvp->u.data = fe->dtv_property_cache.atscmh_prc; | |
1532 | break; | |
1533 | case DTV_ATSCMH_RS_FRAME_MODE: | |
1534 | tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_mode; | |
1535 | break; | |
1536 | case DTV_ATSCMH_RS_FRAME_ENSEMBLE: | |
1537 | tvp->u.data = fe->dtv_property_cache.atscmh_rs_frame_ensemble; | |
1538 | break; | |
1539 | case DTV_ATSCMH_RS_CODE_MODE_PRI: | |
1540 | tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_pri; | |
1541 | break; | |
1542 | case DTV_ATSCMH_RS_CODE_MODE_SEC: | |
1543 | tvp->u.data = fe->dtv_property_cache.atscmh_rs_code_mode_sec; | |
1544 | break; | |
1545 | case DTV_ATSCMH_SCCC_BLOCK_MODE: | |
1546 | tvp->u.data = fe->dtv_property_cache.atscmh_sccc_block_mode; | |
1547 | break; | |
1548 | case DTV_ATSCMH_SCCC_CODE_MODE_A: | |
1549 | tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_a; | |
1550 | break; | |
1551 | case DTV_ATSCMH_SCCC_CODE_MODE_B: | |
1552 | tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_b; | |
1553 | break; | |
1554 | case DTV_ATSCMH_SCCC_CODE_MODE_C: | |
1555 | tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_c; | |
1556 | break; | |
1557 | case DTV_ATSCMH_SCCC_CODE_MODE_D: | |
1558 | tvp->u.data = fe->dtv_property_cache.atscmh_sccc_code_mode_d; | |
1559 | break; | |
ca689488 | 1560 | |
33eebec5 AP |
1561 | case DTV_LNA: |
1562 | tvp->u.data = c->lna; | |
1563 | break; | |
1564 | ||
7cd4ece5 MCC |
1565 | /* Fill quality measures */ |
1566 | case DTV_STAT_SIGNAL_STRENGTH: | |
1567 | tvp->u.st = c->strength; | |
1568 | break; | |
1569 | case DTV_STAT_CNR: | |
1570 | tvp->u.st = c->cnr; | |
1571 | break; | |
1572 | case DTV_STAT_PRE_ERROR_BIT_COUNT: | |
1573 | tvp->u.st = c->pre_bit_error; | |
1574 | break; | |
1575 | case DTV_STAT_PRE_TOTAL_BIT_COUNT: | |
1576 | tvp->u.st = c->pre_bit_count; | |
1577 | break; | |
1578 | case DTV_STAT_POST_ERROR_BIT_COUNT: | |
1579 | tvp->u.st = c->post_bit_error; | |
1580 | break; | |
1581 | case DTV_STAT_POST_TOTAL_BIT_COUNT: | |
1582 | tvp->u.st = c->post_bit_count; | |
1583 | break; | |
1584 | case DTV_STAT_ERROR_BLOCK_COUNT: | |
1585 | tvp->u.st = c->block_error; | |
1586 | break; | |
1587 | case DTV_STAT_TOTAL_BLOCK_COUNT: | |
1588 | tvp->u.st = c->block_count; | |
1589 | break; | |
363429a0 | 1590 | default: |
94a93e5f MCC |
1591 | dev_dbg(fe->dvb->device, |
1592 | "%s: FE property %d doesn't exist\n", | |
1593 | __func__, tvp->cmd); | |
aff8ab5c | 1594 | return -EINVAL; |
363429a0 ST |
1595 | } |
1596 | ||
e23d9ae3 AO |
1597 | /* Allow the frontend to override outgoing properties */ |
1598 | if (fe->ops.get_property) { | |
1599 | r = fe->ops.get_property(fe, tvp); | |
1600 | if (r < 0) | |
1601 | return r; | |
1602 | } | |
1603 | ||
c29ebb64 | 1604 | dtv_property_dump(fe, false, tvp); |
639544d7 | 1605 | |
aff8ab5c | 1606 | return 0; |
363429a0 ST |
1607 | } |
1608 | ||
5bfaadde MCC |
1609 | static int dtv_set_frontend(struct dvb_frontend *fe); |
1610 | ||
04be0f76 MCC |
1611 | static bool is_dvbv3_delsys(u32 delsys) |
1612 | { | |
1613 | bool status; | |
1614 | ||
1615 | status = (delsys == SYS_DVBT) || (delsys == SYS_DVBC_ANNEX_A) || | |
1616 | (delsys == SYS_DVBS) || (delsys == SYS_ATSC); | |
1617 | ||
1618 | return status; | |
1619 | } | |
1620 | ||
52dee392 MCC |
1621 | /** |
1622 | * emulate_delivery_system - emulate a DVBv5 delivery system with a DVBv3 type | |
1623 | * @fe: struct frontend; | |
1624 | * @delsys: DVBv5 type that will be used for emulation | |
1625 | * | |
1626 | * Provides emulation for delivery systems that are compatible with the old | |
1627 | * DVBv3 call. Among its usages, it provices support for ISDB-T, and allows | |
1628 | * using a DVB-S2 only frontend just like it were a DVB-S, if the frontent | |
1629 | * parameters are compatible with DVB-S spec. | |
1630 | */ | |
1631 | static int emulate_delivery_system(struct dvb_frontend *fe, u32 delsys) | |
04be0f76 | 1632 | { |
be431b16 | 1633 | int i; |
04be0f76 | 1634 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
04be0f76 | 1635 | |
3626479e MCC |
1636 | c->delivery_system = delsys; |
1637 | ||
04be0f76 | 1638 | /* |
52dee392 | 1639 | * If the call is for ISDB-T, put it into full-seg, auto mode, TV |
04be0f76 | 1640 | */ |
52dee392 MCC |
1641 | if (c->delivery_system == SYS_ISDBT) { |
1642 | dev_dbg(fe->dvb->device, | |
1643 | "%s: Using defaults for SYS_ISDBT\n", | |
1644 | __func__); | |
04be0f76 | 1645 | |
52dee392 MCC |
1646 | if (!c->bandwidth_hz) |
1647 | c->bandwidth_hz = 6000000; | |
1648 | ||
1649 | c->isdbt_partial_reception = 0; | |
1650 | c->isdbt_sb_mode = 0; | |
1651 | c->isdbt_sb_subchannel = 0; | |
1652 | c->isdbt_sb_segment_idx = 0; | |
1653 | c->isdbt_sb_segment_count = 0; | |
1654 | c->isdbt_layer_enabled = 7; | |
1655 | for (i = 0; i < 3; i++) { | |
1656 | c->layer[i].fec = FEC_AUTO; | |
1657 | c->layer[i].modulation = QAM_AUTO; | |
1658 | c->layer[i].interleaving = 0; | |
1659 | c->layer[i].segment_count = 0; | |
04be0f76 MCC |
1660 | } |
1661 | } | |
36bdbc3f | 1662 | dev_dbg(fe->dvb->device, "%s: change delivery system on cache to %d\n", |
52dee392 | 1663 | __func__, c->delivery_system); |
9474c5e6 | 1664 | |
04be0f76 MCC |
1665 | return 0; |
1666 | } | |
1667 | ||
52dee392 MCC |
1668 | /** |
1669 | * dvbv5_set_delivery_system - Sets the delivery system for a DVBv5 API call | |
1670 | * @fe: frontend struct | |
1671 | * @desired_system: delivery system requested by the user | |
1672 | * | |
1673 | * A DVBv5 call know what's the desired system it wants. So, set it. | |
1674 | * | |
1675 | * There are, however, a few known issues with early DVBv5 applications that | |
1676 | * are also handled by this logic: | |
1677 | * | |
1678 | * 1) Some early apps use SYS_UNDEFINED as the desired delivery system. | |
1679 | * This is an API violation, but, as we don't want to break userspace, | |
1680 | * convert it to the first supported delivery system. | |
1681 | * 2) Some apps might be using a DVBv5 call in a wrong way, passing, for | |
1682 | * example, SYS_DVBT instead of SYS_ISDBT. This is because early usage of | |
1683 | * ISDB-T provided backward compat with DVB-T. | |
1684 | */ | |
be431b16 MCC |
1685 | static int dvbv5_set_delivery_system(struct dvb_frontend *fe, |
1686 | u32 desired_system) | |
1687 | { | |
1688 | int ncaps; | |
1689 | u32 delsys = SYS_UNDEFINED; | |
1690 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
1691 | enum dvbv3_emulation_type type; | |
1692 | ||
1693 | /* | |
1694 | * It was reported that some old DVBv5 applications were | |
1695 | * filling delivery_system with SYS_UNDEFINED. If this happens, | |
1696 | * assume that the application wants to use the first supported | |
1697 | * delivery system. | |
1698 | */ | |
52dee392 MCC |
1699 | if (desired_system == SYS_UNDEFINED) |
1700 | desired_system = fe->ops.delsys[0]; | |
be431b16 MCC |
1701 | |
1702 | /* | |
52dee392 MCC |
1703 | * This is a DVBv5 call. So, it likely knows the supported |
1704 | * delivery systems. So, check if the desired delivery system is | |
1705 | * supported | |
1706 | */ | |
be431b16 | 1707 | ncaps = 0; |
0123f29c | 1708 | while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) { |
be431b16 MCC |
1709 | if (fe->ops.delsys[ncaps] == desired_system) { |
1710 | c->delivery_system = desired_system; | |
1711 | dev_dbg(fe->dvb->device, | |
1712 | "%s: Changing delivery system to %d\n", | |
1713 | __func__, desired_system); | |
1714 | return 0; | |
1715 | } | |
1716 | ncaps++; | |
1717 | } | |
1718 | ||
1719 | /* | |
52dee392 MCC |
1720 | * The requested delivery system isn't supported. Maybe userspace |
1721 | * is requesting a DVBv3 compatible delivery system. | |
1722 | * | |
1723 | * The emulation only works if the desired system is one of the | |
1724 | * delivery systems supported by DVBv3 API | |
be431b16 | 1725 | */ |
be431b16 MCC |
1726 | if (!is_dvbv3_delsys(desired_system)) { |
1727 | dev_dbg(fe->dvb->device, | |
52dee392 MCC |
1728 | "%s: Delivery system %d not supported.\n", |
1729 | __func__, desired_system); | |
be431b16 MCC |
1730 | return -EINVAL; |
1731 | } | |
1732 | ||
52dee392 MCC |
1733 | type = dvbv3_type(desired_system); |
1734 | ||
be431b16 MCC |
1735 | /* |
1736 | * Get the last non-DVBv3 delivery system that has the same type | |
1737 | * of the desired system | |
1738 | */ | |
1739 | ncaps = 0; | |
0123f29c | 1740 | while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) { |
52dee392 | 1741 | if (dvbv3_type(fe->ops.delsys[ncaps]) == type) |
be431b16 MCC |
1742 | delsys = fe->ops.delsys[ncaps]; |
1743 | ncaps++; | |
1744 | } | |
52dee392 | 1745 | |
be431b16 MCC |
1746 | /* There's nothing compatible with the desired delivery system */ |
1747 | if (delsys == SYS_UNDEFINED) { | |
1748 | dev_dbg(fe->dvb->device, | |
52dee392 MCC |
1749 | "%s: Delivery system %d not supported on emulation mode.\n", |
1750 | __func__, desired_system); | |
be431b16 MCC |
1751 | return -EINVAL; |
1752 | } | |
1753 | ||
52dee392 MCC |
1754 | dev_dbg(fe->dvb->device, |
1755 | "%s: Using delivery system %d emulated as if it were %d\n", | |
1756 | __func__, delsys, desired_system); | |
1757 | ||
1758 | return emulate_delivery_system(fe, desired_system); | |
be431b16 MCC |
1759 | } |
1760 | ||
52dee392 MCC |
1761 | /** |
1762 | * dvbv3_set_delivery_system - Sets the delivery system for a DVBv3 API call | |
1763 | * @fe: frontend struct | |
1764 | * | |
1765 | * A DVBv3 call doesn't know what's the desired system it wants. It also | |
1766 | * doesn't allow to switch between different types. Due to that, userspace | |
1767 | * should use DVBv5 instead. | |
1768 | * However, in order to avoid breaking userspace API, limited backward | |
1769 | * compatibility support is provided. | |
1770 | * | |
1771 | * There are some delivery systems that are incompatible with DVBv3 calls. | |
1772 | * | |
1773 | * This routine should work fine for frontends that support just one delivery | |
1774 | * system. | |
1775 | * | |
1776 | * For frontends that support multiple frontends: | |
1777 | * 1) It defaults to use the first supported delivery system. There's an | |
1778 | * userspace application that allows changing it at runtime; | |
1779 | * | |
1780 | * 2) If the current delivery system is not compatible with DVBv3, it gets | |
1781 | * the first one that it is compatible. | |
1782 | * | |
1783 | * NOTE: in order for this to work with applications like Kaffeine that | |
1784 | * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to | |
1785 | * DVB-S, drivers that support both DVB-S and DVB-S2 should have the | |
1786 | * SYS_DVBS entry before the SYS_DVBS2, otherwise it won't switch back | |
1787 | * to DVB-S. | |
1788 | */ | |
be431b16 MCC |
1789 | static int dvbv3_set_delivery_system(struct dvb_frontend *fe) |
1790 | { | |
1791 | int ncaps; | |
be431b16 MCC |
1792 | u32 delsys = SYS_UNDEFINED; |
1793 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
be431b16 MCC |
1794 | |
1795 | /* If not set yet, defaults to the first supported delivery system */ | |
1796 | if (c->delivery_system == SYS_UNDEFINED) | |
1797 | c->delivery_system = fe->ops.delsys[0]; | |
1798 | ||
be431b16 MCC |
1799 | /* |
1800 | * Trivial case: just use the current one, if it already a DVBv3 | |
1801 | * delivery system | |
1802 | */ | |
1803 | if (is_dvbv3_delsys(c->delivery_system)) { | |
1804 | dev_dbg(fe->dvb->device, | |
1805 | "%s: Using delivery system to %d\n", | |
1806 | __func__, c->delivery_system); | |
1807 | return 0; | |
1808 | } | |
1809 | ||
be431b16 | 1810 | /* |
52dee392 MCC |
1811 | * Seek for the first delivery system that it is compatible with a |
1812 | * DVBv3 standard | |
be431b16 MCC |
1813 | */ |
1814 | ncaps = 0; | |
0123f29c | 1815 | while (ncaps < MAX_DELSYS && fe->ops.delsys[ncaps]) { |
52dee392 MCC |
1816 | if (dvbv3_type(fe->ops.delsys[ncaps]) != DVBV3_UNKNOWN) { |
1817 | delsys = fe->ops.delsys[ncaps]; | |
be431b16 MCC |
1818 | break; |
1819 | } | |
1820 | ncaps++; | |
1821 | } | |
1822 | if (delsys == SYS_UNDEFINED) { | |
52dee392 MCC |
1823 | dev_dbg(fe->dvb->device, |
1824 | "%s: Couldn't find a delivery system that works with FE_SET_FRONTEND\n", | |
1825 | __func__); | |
1826 | return -EINVAL; | |
be431b16 | 1827 | } |
52dee392 | 1828 | return emulate_delivery_system(fe, delsys); |
be431b16 MCC |
1829 | } |
1830 | ||
072ce0c5 MCC |
1831 | static int dtv_property_process_set(struct dvb_frontend *fe, |
1832 | struct dtv_property *tvp, | |
072ce0c5 | 1833 | struct file *file) |
6b73eeaf ST |
1834 | { |
1835 | int r = 0; | |
50727719 | 1836 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
6b73eeaf | 1837 | |
bfbf2dae | 1838 | /* Allow the frontend to validate incoming properties */ |
aff8ab5c | 1839 | if (fe->ops.set_property) { |
bfbf2dae | 1840 | r = fe->ops.set_property(fe, tvp); |
aff8ab5c AO |
1841 | if (r < 0) |
1842 | return r; | |
1843 | } | |
bfbf2dae | 1844 | |
c29ebb64 MCC |
1845 | dtv_property_dump(fe, true, tvp); |
1846 | ||
6b73eeaf | 1847 | switch(tvp->cmd) { |
e7fee0f3 | 1848 | case DTV_CLEAR: |
5bfaadde MCC |
1849 | /* |
1850 | * Reset a cache of data specific to the frontend here. This does | |
6b73eeaf ST |
1851 | * not effect hardware. |
1852 | */ | |
b6e760f3 | 1853 | dvb_frontend_clear_cache(fe); |
6b73eeaf | 1854 | break; |
e7fee0f3 | 1855 | case DTV_TUNE: |
6b73eeaf | 1856 | /* interpret the cache of data, build either a traditional frontend |
d5748f10 ST |
1857 | * tunerequest so we can pass validation in the FE_SET_FRONTEND |
1858 | * ioctl. | |
6b73eeaf | 1859 | */ |
50727719 | 1860 | c->state = tvp->cmd; |
36bdbc3f AP |
1861 | dev_dbg(fe->dvb->device, "%s: Finalised property cache\n", |
1862 | __func__); | |
d5748f10 | 1863 | |
5bfaadde | 1864 | r = dtv_set_frontend(fe); |
6b73eeaf | 1865 | break; |
363429a0 | 1866 | case DTV_FREQUENCY: |
50727719 | 1867 | c->frequency = tvp->u.data; |
6b73eeaf | 1868 | break; |
363429a0 | 1869 | case DTV_MODULATION: |
50727719 | 1870 | c->modulation = tvp->u.data; |
6b73eeaf | 1871 | break; |
75b7f943 | 1872 | case DTV_BANDWIDTH_HZ: |
50727719 | 1873 | c->bandwidth_hz = tvp->u.data; |
6b73eeaf | 1874 | break; |
363429a0 | 1875 | case DTV_INVERSION: |
50727719 | 1876 | c->inversion = tvp->u.data; |
6b73eeaf | 1877 | break; |
363429a0 | 1878 | case DTV_SYMBOL_RATE: |
50727719 | 1879 | c->symbol_rate = tvp->u.data; |
6b73eeaf | 1880 | break; |
363429a0 | 1881 | case DTV_INNER_FEC: |
50727719 | 1882 | c->fec_inner = tvp->u.data; |
6b73eeaf | 1883 | break; |
363429a0 | 1884 | case DTV_PILOT: |
50727719 | 1885 | c->pilot = tvp->u.data; |
6b73eeaf | 1886 | break; |
363429a0 | 1887 | case DTV_ROLLOFF: |
50727719 | 1888 | c->rolloff = tvp->u.data; |
6b73eeaf | 1889 | break; |
363429a0 | 1890 | case DTV_DELIVERY_SYSTEM: |
be431b16 | 1891 | r = dvbv5_set_delivery_system(fe, tvp->u.data); |
6b73eeaf | 1892 | break; |
363429a0 | 1893 | case DTV_VOLTAGE: |
50727719 | 1894 | c->voltage = tvp->u.data; |
16ef8def | 1895 | r = dvb_frontend_ioctl_legacy(file, FE_SET_VOLTAGE, |
50727719 | 1896 | (void *)c->voltage); |
13c97bf5 | 1897 | break; |
363429a0 | 1898 | case DTV_TONE: |
50727719 | 1899 | c->sectone = tvp->u.data; |
16ef8def | 1900 | r = dvb_frontend_ioctl_legacy(file, FE_SET_TONE, |
50727719 | 1901 | (void *)c->sectone); |
13c97bf5 | 1902 | break; |
a4de91be | 1903 | case DTV_CODE_RATE_HP: |
50727719 | 1904 | c->code_rate_HP = tvp->u.data; |
a4de91be ST |
1905 | break; |
1906 | case DTV_CODE_RATE_LP: | |
50727719 | 1907 | c->code_rate_LP = tvp->u.data; |
a4de91be | 1908 | break; |
b87625f0 | 1909 | case DTV_GUARD_INTERVAL: |
50727719 | 1910 | c->guard_interval = tvp->u.data; |
b87625f0 ST |
1911 | break; |
1912 | case DTV_TRANSMISSION_MODE: | |
50727719 | 1913 | c->transmission_mode = tvp->u.data; |
b87625f0 | 1914 | break; |
ef526f42 | 1915 | case DTV_HIERARCHY: |
50727719 | 1916 | c->hierarchy = tvp->u.data; |
ef526f42 | 1917 | break; |
224b6642 AP |
1918 | case DTV_INTERLEAVING: |
1919 | c->interleaving = tvp->u.data; | |
1920 | break; | |
b6e760f3 PB |
1921 | |
1922 | /* ISDB-T Support here */ | |
1923 | case DTV_ISDBT_PARTIAL_RECEPTION: | |
50727719 | 1924 | c->isdbt_partial_reception = tvp->u.data; |
b6e760f3 PB |
1925 | break; |
1926 | case DTV_ISDBT_SOUND_BROADCASTING: | |
50727719 | 1927 | c->isdbt_sb_mode = tvp->u.data; |
b6e760f3 PB |
1928 | break; |
1929 | case DTV_ISDBT_SB_SUBCHANNEL_ID: | |
50727719 | 1930 | c->isdbt_sb_subchannel = tvp->u.data; |
b6e760f3 PB |
1931 | break; |
1932 | case DTV_ISDBT_SB_SEGMENT_IDX: | |
50727719 | 1933 | c->isdbt_sb_segment_idx = tvp->u.data; |
b6e760f3 PB |
1934 | break; |
1935 | case DTV_ISDBT_SB_SEGMENT_COUNT: | |
50727719 | 1936 | c->isdbt_sb_segment_count = tvp->u.data; |
b6e760f3 | 1937 | break; |
e7b7949a | 1938 | case DTV_ISDBT_LAYER_ENABLED: |
50727719 | 1939 | c->isdbt_layer_enabled = tvp->u.data; |
e7b7949a | 1940 | break; |
b6e760f3 | 1941 | case DTV_ISDBT_LAYERA_FEC: |
50727719 | 1942 | c->layer[0].fec = tvp->u.data; |
b6e760f3 PB |
1943 | break; |
1944 | case DTV_ISDBT_LAYERA_MODULATION: | |
50727719 | 1945 | c->layer[0].modulation = tvp->u.data; |
b6e760f3 PB |
1946 | break; |
1947 | case DTV_ISDBT_LAYERA_SEGMENT_COUNT: | |
50727719 | 1948 | c->layer[0].segment_count = tvp->u.data; |
b6e760f3 PB |
1949 | break; |
1950 | case DTV_ISDBT_LAYERA_TIME_INTERLEAVING: | |
50727719 | 1951 | c->layer[0].interleaving = tvp->u.data; |
b6e760f3 PB |
1952 | break; |
1953 | case DTV_ISDBT_LAYERB_FEC: | |
50727719 | 1954 | c->layer[1].fec = tvp->u.data; |
b6e760f3 PB |
1955 | break; |
1956 | case DTV_ISDBT_LAYERB_MODULATION: | |
50727719 | 1957 | c->layer[1].modulation = tvp->u.data; |
b6e760f3 PB |
1958 | break; |
1959 | case DTV_ISDBT_LAYERB_SEGMENT_COUNT: | |
50727719 | 1960 | c->layer[1].segment_count = tvp->u.data; |
b6e760f3 PB |
1961 | break; |
1962 | case DTV_ISDBT_LAYERB_TIME_INTERLEAVING: | |
50727719 | 1963 | c->layer[1].interleaving = tvp->u.data; |
b6e760f3 PB |
1964 | break; |
1965 | case DTV_ISDBT_LAYERC_FEC: | |
50727719 | 1966 | c->layer[2].fec = tvp->u.data; |
b6e760f3 PB |
1967 | break; |
1968 | case DTV_ISDBT_LAYERC_MODULATION: | |
50727719 | 1969 | c->layer[2].modulation = tvp->u.data; |
b6e760f3 PB |
1970 | break; |
1971 | case DTV_ISDBT_LAYERC_SEGMENT_COUNT: | |
50727719 | 1972 | c->layer[2].segment_count = tvp->u.data; |
b6e760f3 PB |
1973 | break; |
1974 | case DTV_ISDBT_LAYERC_TIME_INTERLEAVING: | |
50727719 | 1975 | c->layer[2].interleaving = tvp->u.data; |
b6e760f3 | 1976 | break; |
287cefd0 EP |
1977 | |
1978 | /* Multistream support */ | |
1979 | case DTV_STREAM_ID: | |
1980 | case DTV_DVBT2_PLP_ID_LEGACY: | |
1981 | c->stream_id = tvp->u.data; | |
98293ef3 | 1982 | break; |
ca689488 MK |
1983 | |
1984 | /* ATSC-MH */ | |
1985 | case DTV_ATSCMH_PARADE_ID: | |
1986 | fe->dtv_property_cache.atscmh_parade_id = tvp->u.data; | |
1987 | break; | |
1988 | case DTV_ATSCMH_RS_FRAME_ENSEMBLE: | |
1989 | fe->dtv_property_cache.atscmh_rs_frame_ensemble = tvp->u.data; | |
1990 | break; | |
1991 | ||
33eebec5 AP |
1992 | case DTV_LNA: |
1993 | c->lna = tvp->u.data; | |
1994 | if (fe->ops.set_lna) | |
1995 | r = fe->ops.set_lna(fe); | |
e6876692 MCC |
1996 | if (r < 0) |
1997 | c->lna = LNA_AUTO; | |
33eebec5 AP |
1998 | break; |
1999 | ||
363429a0 | 2000 | default: |
aff8ab5c | 2001 | return -EINVAL; |
6b73eeaf ST |
2002 | } |
2003 | ||
13c97bf5 | 2004 | return r; |
6b73eeaf ST |
2005 | } |
2006 | ||
16ef8def | 2007 | static int dvb_frontend_ioctl(struct file *file, |
1da177e4 LT |
2008 | unsigned int cmd, void *parg) |
2009 | { | |
2010 | struct dvb_device *dvbdev = file->private_data; | |
2011 | struct dvb_frontend *fe = dvbdev->priv; | |
50727719 | 2012 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
0c53c70f | 2013 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
ac897586 | 2014 | int err = -EOPNOTSUPP; |
1da177e4 | 2015 | |
36bdbc3f | 2016 | dev_dbg(fe->dvb->device, "%s: (%d)\n", __func__, _IOC_NR(cmd)); |
6ae23224 JL |
2017 | if (down_interruptible(&fepriv->sem)) |
2018 | return -ERESTARTSYS; | |
2019 | ||
18ed2860 | 2020 | if (fe->exit != DVB_FE_NO_EXIT) { |
6ae23224 | 2021 | up(&fepriv->sem); |
1da177e4 | 2022 | return -ENODEV; |
6ae23224 | 2023 | } |
1da177e4 LT |
2024 | |
2025 | if ((file->f_flags & O_ACCMODE) == O_RDONLY && | |
2026 | (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT || | |
6ae23224 JL |
2027 | cmd == FE_DISEQC_RECV_SLAVE_REPLY)) { |
2028 | up(&fepriv->sem); | |
1da177e4 | 2029 | return -EPERM; |
6ae23224 | 2030 | } |
1da177e4 | 2031 | |
13c97bf5 | 2032 | if ((cmd == FE_SET_PROPERTY) || (cmd == FE_GET_PROPERTY)) |
16ef8def | 2033 | err = dvb_frontend_ioctl_properties(file, cmd, parg); |
4dd88bec | 2034 | else { |
50727719 | 2035 | c->state = DTV_UNDEFINED; |
16ef8def | 2036 | err = dvb_frontend_ioctl_legacy(file, cmd, parg); |
4dd88bec | 2037 | } |
13c97bf5 ST |
2038 | |
2039 | up(&fepriv->sem); | |
2040 | return err; | |
2041 | } | |
2042 | ||
16ef8def | 2043 | static int dvb_frontend_ioctl_properties(struct file *file, |
13c97bf5 ST |
2044 | unsigned int cmd, void *parg) |
2045 | { | |
2046 | struct dvb_device *dvbdev = file->private_data; | |
2047 | struct dvb_frontend *fe = dvbdev->priv; | |
51dcb19a | 2048 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
50727719 | 2049 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
e6f9ec86 | 2050 | int err = 0; |
e7fee0f3 | 2051 | |
71d1b2be | 2052 | struct dtv_properties *tvps = parg; |
e7fee0f3 ST |
2053 | struct dtv_property *tvp = NULL; |
2054 | int i; | |
13c97bf5 | 2055 | |
36bdbc3f | 2056 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
13c97bf5 | 2057 | |
71d1b2be | 2058 | if (cmd == FE_SET_PROPERTY) { |
36bdbc3f AP |
2059 | dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num); |
2060 | dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props); | |
e7fee0f3 ST |
2061 | |
2062 | /* Put an arbitrary limit on the number of messages that can | |
2063 | * be sent at once */ | |
6068f506 | 2064 | if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS)) |
e7fee0f3 ST |
2065 | return -EINVAL; |
2066 | ||
6e3924aa | 2067 | tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL); |
e7fee0f3 ST |
2068 | if (!tvp) { |
2069 | err = -ENOMEM; | |
2070 | goto out; | |
6b73eeaf ST |
2071 | } |
2072 | ||
71d1b2be MCC |
2073 | if (copy_from_user(tvp, (void __user *)tvps->props, |
2074 | tvps->num * sizeof(struct dtv_property))) { | |
e7fee0f3 ST |
2075 | err = -EFAULT; |
2076 | goto out; | |
2077 | } | |
2078 | ||
d48cb402 | 2079 | for (i = 0; i < tvps->num; i++) { |
aff8ab5c AO |
2080 | err = dtv_property_process_set(fe, tvp + i, file); |
2081 | if (err < 0) | |
2082 | goto out; | |
2083 | (tvp + i)->result = err; | |
d48cb402 | 2084 | } |
e7fee0f3 | 2085 | |
50727719 | 2086 | if (c->state == DTV_TUNE) |
36bdbc3f | 2087 | dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__); |
bfbf2dae | 2088 | |
71d1b2be | 2089 | } else if (cmd == FE_GET_PROPERTY) { |
bb31d238 MCC |
2090 | struct dtv_frontend_properties getp = fe->dtv_property_cache; |
2091 | ||
36bdbc3f AP |
2092 | dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num); |
2093 | dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props); | |
363429a0 ST |
2094 | |
2095 | /* Put an arbitrary limit on the number of messages that can | |
2096 | * be sent at once */ | |
6068f506 | 2097 | if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS)) |
363429a0 ST |
2098 | return -EINVAL; |
2099 | ||
6e3924aa | 2100 | tvp = kmalloc(tvps->num * sizeof(struct dtv_property), GFP_KERNEL); |
363429a0 ST |
2101 | if (!tvp) { |
2102 | err = -ENOMEM; | |
2103 | goto out; | |
2104 | } | |
2105 | ||
71d1b2be MCC |
2106 | if (copy_from_user(tvp, (void __user *)tvps->props, |
2107 | tvps->num * sizeof(struct dtv_property))) { | |
363429a0 ST |
2108 | err = -EFAULT; |
2109 | goto out; | |
2110 | } | |
2111 | ||
a689e365 | 2112 | /* |
bb31d238 MCC |
2113 | * Let's use our own copy of property cache, in order to |
2114 | * avoid mangling with DTV zigzag logic, as drivers might | |
2115 | * return crap, if they don't check if the data is available | |
2116 | * before updating the properties cache. | |
a689e365 | 2117 | */ |
51dcb19a | 2118 | if (fepriv->state != FESTATE_IDLE) { |
bb31d238 | 2119 | err = dtv_get_frontend(fe, &getp, NULL); |
51dcb19a MCC |
2120 | if (err < 0) |
2121 | goto out; | |
2122 | } | |
d48cb402 | 2123 | for (i = 0; i < tvps->num; i++) { |
bb31d238 | 2124 | err = dtv_property_process_get(fe, &getp, tvp + i, file); |
aff8ab5c AO |
2125 | if (err < 0) |
2126 | goto out; | |
2127 | (tvp + i)->result = err; | |
d48cb402 | 2128 | } |
363429a0 | 2129 | |
71d1b2be MCC |
2130 | if (copy_to_user((void __user *)tvps->props, tvp, |
2131 | tvps->num * sizeof(struct dtv_property))) { | |
363429a0 ST |
2132 | err = -EFAULT; |
2133 | goto out; | |
2134 | } | |
2135 | ||
363429a0 | 2136 | } else |
ac897586 | 2137 | err = -EOPNOTSUPP; |
363429a0 | 2138 | |
e7fee0f3 ST |
2139 | out: |
2140 | kfree(tvp); | |
13c97bf5 ST |
2141 | return err; |
2142 | } | |
2143 | ||
5bfaadde | 2144 | static int dtv_set_frontend(struct dvb_frontend *fe) |
9682cea2 | 2145 | { |
9682cea2 MCC |
2146 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
2147 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
2148 | struct dvb_frontend_tune_settings fetunesettings; | |
5bfaadde | 2149 | u32 rolloff = 0; |
9682cea2 | 2150 | |
5bfaadde MCC |
2151 | if (dvb_frontend_check_parameters(fe) < 0) |
2152 | return -EINVAL; | |
9682cea2 | 2153 | |
556a0442 CR |
2154 | /* |
2155 | * Initialize output parameters to match the values given by | |
2156 | * the user. FE_SET_FRONTEND triggers an initial frontend event | |
2157 | * with status = 0, which copies output parameters to userspace. | |
2158 | */ | |
2ea9a08d | 2159 | dtv_property_legacy_params_sync(fe, c, &fepriv->parameters_out); |
556a0442 | 2160 | |
5bfaadde MCC |
2161 | /* |
2162 | * Be sure that the bandwidth will be filled for all | |
2163 | * non-satellite systems, as tuners need to know what | |
2164 | * low pass/Nyquist half filter should be applied, in | |
2165 | * order to avoid inter-channel noise. | |
2166 | * | |
2167 | * ISDB-T and DVB-T/T2 already sets bandwidth. | |
2168 | * ATSC and DVB-C don't set, so, the core should fill it. | |
2169 | * | |
2170 | * On DVB-C Annex A and C, the bandwidth is a function of | |
2171 | * the roll-off and symbol rate. Annex B defines different | |
2172 | * roll-off factors depending on the modulation. Fortunately, | |
2173 | * Annex B is only used with 6MHz, so there's no need to | |
2174 | * calculate it. | |
2175 | * | |
2176 | * While not officially supported, a side effect of handling it at | |
2177 | * the cache level is that a program could retrieve the bandwidth | |
2178 | * via DTV_BANDWIDTH_HZ, which may be useful for test programs. | |
2179 | */ | |
2180 | switch (c->delivery_system) { | |
2181 | case SYS_ATSC: | |
2182 | case SYS_DVBC_ANNEX_B: | |
2183 | c->bandwidth_hz = 6000000; | |
2184 | break; | |
2185 | case SYS_DVBC_ANNEX_A: | |
2186 | rolloff = 115; | |
2187 | break; | |
2188 | case SYS_DVBC_ANNEX_C: | |
2189 | rolloff = 113; | |
2190 | break; | |
c623ed63 MCC |
2191 | case SYS_DVBS: |
2192 | case SYS_TURBO: | |
8e281faf | 2193 | case SYS_ISDBS: |
c623ed63 MCC |
2194 | rolloff = 135; |
2195 | break; | |
2196 | case SYS_DVBS2: | |
2197 | switch (c->rolloff) { | |
2198 | case ROLLOFF_20: | |
2199 | rolloff = 120; | |
2200 | break; | |
2201 | case ROLLOFF_25: | |
2202 | rolloff = 125; | |
2203 | break; | |
2204 | default: | |
2205 | case ROLLOFF_35: | |
2206 | rolloff = 135; | |
2207 | } | |
2208 | break; | |
5bfaadde MCC |
2209 | default: |
2210 | break; | |
2211 | } | |
2212 | if (rolloff) | |
2a80f296 | 2213 | c->bandwidth_hz = mult_frac(c->symbol_rate, rolloff, 100); |
9682cea2 MCC |
2214 | |
2215 | /* force auto frequency inversion if requested */ | |
5bfaadde | 2216 | if (dvb_force_auto_inversion) |
9682cea2 | 2217 | c->inversion = INVERSION_AUTO; |
5bfaadde MCC |
2218 | |
2219 | /* | |
2220 | * without hierarchical coding code_rate_LP is irrelevant, | |
2221 | * so we tolerate the otherwise invalid FEC_NONE setting | |
2222 | */ | |
2223 | if (c->hierarchy == HIERARCHY_NONE && c->code_rate_LP == FEC_NONE) | |
2224 | c->code_rate_LP = FEC_AUTO; | |
9682cea2 MCC |
2225 | |
2226 | /* get frontend-specific tuning settings */ | |
5bfaadde | 2227 | memset(&fetunesettings, 0, sizeof(struct dvb_frontend_tune_settings)); |
9682cea2 MCC |
2228 | if (fe->ops.get_tune_settings && (fe->ops.get_tune_settings(fe, &fetunesettings) == 0)) { |
2229 | fepriv->min_delay = (fetunesettings.min_delay_ms * HZ) / 1000; | |
2230 | fepriv->max_drift = fetunesettings.max_drift; | |
2231 | fepriv->step_size = fetunesettings.step_size; | |
2232 | } else { | |
2233 | /* default values */ | |
5bfaadde | 2234 | switch (c->delivery_system) { |
910a5f2e MCC |
2235 | case SYS_DVBS: |
2236 | case SYS_DVBS2: | |
2237 | case SYS_ISDBS: | |
2238 | case SYS_TURBO: | |
5bfaadde MCC |
2239 | case SYS_DVBC_ANNEX_A: |
2240 | case SYS_DVBC_ANNEX_C: | |
2241 | fepriv->min_delay = HZ / 20; | |
9682cea2 MCC |
2242 | fepriv->step_size = c->symbol_rate / 16000; |
2243 | fepriv->max_drift = c->symbol_rate / 2000; | |
2244 | break; | |
5bfaadde MCC |
2245 | case SYS_DVBT: |
2246 | case SYS_DVBT2: | |
2247 | case SYS_ISDBT: | |
224b6642 | 2248 | case SYS_DTMB: |
5bfaadde | 2249 | fepriv->min_delay = HZ / 20; |
9682cea2 MCC |
2250 | fepriv->step_size = fe->ops.info.frequency_stepsize * 2; |
2251 | fepriv->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1; | |
2252 | break; | |
5bfaadde MCC |
2253 | default: |
2254 | /* | |
2255 | * FIXME: This sounds wrong! if freqency_stepsize is | |
2256 | * defined by the frontend, why not use it??? | |
2257 | */ | |
2258 | fepriv->min_delay = HZ / 20; | |
2259 | fepriv->step_size = 0; /* no zigzag */ | |
9682cea2 MCC |
2260 | fepriv->max_drift = 0; |
2261 | break; | |
2262 | } | |
2263 | } | |
2264 | if (dvb_override_tune_delay > 0) | |
2265 | fepriv->min_delay = (dvb_override_tune_delay * HZ) / 1000; | |
2266 | ||
2267 | fepriv->state = FESTATE_RETUNE; | |
2268 | ||
2269 | /* Request the search algorithm to search */ | |
2270 | fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN; | |
2271 | ||
2272 | dvb_frontend_clear_events(fe); | |
2273 | dvb_frontend_add_event(fe, 0); | |
2274 | dvb_frontend_wakeup(fe); | |
2275 | fepriv->status = 0; | |
2276 | ||
2277 | return 0; | |
2278 | } | |
2279 | ||
2280 | ||
16ef8def | 2281 | static int dvb_frontend_ioctl_legacy(struct file *file, |
13c97bf5 ST |
2282 | unsigned int cmd, void *parg) |
2283 | { | |
2284 | struct dvb_device *dvbdev = file->private_data; | |
2285 | struct dvb_frontend *fe = dvbdev->priv; | |
2286 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
5bfaadde | 2287 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
ac897586 | 2288 | int err = -EOPNOTSUPP; |
13c97bf5 | 2289 | |
1da177e4 LT |
2290 | switch (cmd) { |
2291 | case FE_GET_INFO: { | |
0c53c70f | 2292 | struct dvb_frontend_info* info = parg; |
9474c5e6 | 2293 | |
dea74869 | 2294 | memcpy(info, &fe->ops.info, sizeof(struct dvb_frontend_info)); |
2030c032 | 2295 | dvb_frontend_get_frequency_limits(fe, &info->frequency_min, &info->frequency_max); |
1da177e4 | 2296 | |
5bfaadde MCC |
2297 | /* |
2298 | * Associate the 4 delivery systems supported by DVBv3 | |
2299 | * API with their DVBv5 counterpart. For the other standards, | |
2300 | * use the closest type, assuming that it would hopefully | |
2301 | * work with a DVBv3 application. | |
2302 | * It should be noticed that, on multi-frontend devices with | |
2303 | * different types (terrestrial and cable, for example), | |
2304 | * a pure DVBv3 application won't be able to use all delivery | |
2305 | * systems. Yet, changing the DVBv5 cache to the other delivery | |
2306 | * system should be enough for making it work. | |
2307 | */ | |
2308 | switch (dvbv3_type(c->delivery_system)) { | |
2309 | case DVBV3_QPSK: | |
9474c5e6 | 2310 | info->type = FE_QPSK; |
5bfaadde MCC |
2311 | break; |
2312 | case DVBV3_ATSC: | |
9474c5e6 | 2313 | info->type = FE_ATSC; |
5bfaadde MCC |
2314 | break; |
2315 | case DVBV3_QAM: | |
9474c5e6 | 2316 | info->type = FE_QAM; |
5bfaadde MCC |
2317 | break; |
2318 | case DVBV3_OFDM: | |
9474c5e6 | 2319 | info->type = FE_OFDM; |
5bfaadde MCC |
2320 | break; |
2321 | default: | |
36bdbc3f AP |
2322 | dev_err(fe->dvb->device, |
2323 | "%s: doesn't know how to handle a DVBv3 call to delivery system %i\n", | |
2324 | __func__, c->delivery_system); | |
5bfaadde MCC |
2325 | fe->ops.info.type = FE_OFDM; |
2326 | } | |
36bdbc3f AP |
2327 | dev_dbg(fe->dvb->device, "%s: current delivery system on cache: %d, V3 type: %d\n", |
2328 | __func__, c->delivery_system, fe->ops.info.type); | |
5bfaadde | 2329 | |
c9d57de6 MP |
2330 | /* Set CAN_INVERSION_AUTO bit on in other than oneshot mode */ |
2331 | if (!(fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT)) | |
2332 | info->caps |= FE_CAN_INVERSION_AUTO; | |
1da177e4 LT |
2333 | err = 0; |
2334 | break; | |
2335 | } | |
2336 | ||
6757ccc5 | 2337 | case FE_READ_STATUS: { |
0df289a2 | 2338 | enum fe_status *status = parg; |
6757ccc5 | 2339 | |
25985edc | 2340 | /* if retune was requested but hasn't occurred yet, prevent |
6757ccc5 | 2341 | * that user get signal state from previous tuning */ |
01886255 JG |
2342 | if (fepriv->state == FESTATE_RETUNE || |
2343 | fepriv->state == FESTATE_ERROR) { | |
6757ccc5 PB |
2344 | err=0; |
2345 | *status = 0; | |
2346 | break; | |
2347 | } | |
2348 | ||
dea74869 PB |
2349 | if (fe->ops.read_status) |
2350 | err = fe->ops.read_status(fe, status); | |
1da177e4 | 2351 | break; |
6757ccc5 | 2352 | } |
48caa6f1 | 2353 | |
1da177e4 | 2354 | case FE_READ_BER: |
48caa6f1 AP |
2355 | if (fe->ops.read_ber) { |
2356 | if (fepriv->thread) | |
2357 | err = fe->ops.read_ber(fe, (__u32 *) parg); | |
2358 | else | |
2359 | err = -EAGAIN; | |
2360 | } | |
1da177e4 LT |
2361 | break; |
2362 | ||
2363 | case FE_READ_SIGNAL_STRENGTH: | |
48caa6f1 AP |
2364 | if (fe->ops.read_signal_strength) { |
2365 | if (fepriv->thread) | |
2366 | err = fe->ops.read_signal_strength(fe, (__u16 *) parg); | |
2367 | else | |
2368 | err = -EAGAIN; | |
2369 | } | |
1da177e4 LT |
2370 | break; |
2371 | ||
2372 | case FE_READ_SNR: | |
48caa6f1 AP |
2373 | if (fe->ops.read_snr) { |
2374 | if (fepriv->thread) | |
2375 | err = fe->ops.read_snr(fe, (__u16 *) parg); | |
2376 | else | |
2377 | err = -EAGAIN; | |
2378 | } | |
1da177e4 LT |
2379 | break; |
2380 | ||
2381 | case FE_READ_UNCORRECTED_BLOCKS: | |
48caa6f1 AP |
2382 | if (fe->ops.read_ucblocks) { |
2383 | if (fepriv->thread) | |
2384 | err = fe->ops.read_ucblocks(fe, (__u32 *) parg); | |
2385 | else | |
2386 | err = -EAGAIN; | |
2387 | } | |
1da177e4 LT |
2388 | break; |
2389 | ||
1da177e4 | 2390 | case FE_DISEQC_RESET_OVERLOAD: |
dea74869 PB |
2391 | if (fe->ops.diseqc_reset_overload) { |
2392 | err = fe->ops.diseqc_reset_overload(fe); | |
1da177e4 LT |
2393 | fepriv->state = FESTATE_DISEQC; |
2394 | fepriv->status = 0; | |
2395 | } | |
2396 | break; | |
2397 | ||
2398 | case FE_DISEQC_SEND_MASTER_CMD: | |
dea74869 | 2399 | if (fe->ops.diseqc_send_master_cmd) { |
8d7e5063 DC |
2400 | struct dvb_diseqc_master_cmd *cmd = parg; |
2401 | ||
2402 | if (cmd->msg_len > sizeof(cmd->msg)) { | |
2403 | err = -EINVAL; | |
2404 | break; | |
2405 | } | |
2406 | err = fe->ops.diseqc_send_master_cmd(fe, cmd); | |
1da177e4 LT |
2407 | fepriv->state = FESTATE_DISEQC; |
2408 | fepriv->status = 0; | |
2409 | } | |
2410 | break; | |
2411 | ||
2412 | case FE_DISEQC_SEND_BURST: | |
dea74869 | 2413 | if (fe->ops.diseqc_send_burst) { |
0df289a2 MCC |
2414 | err = fe->ops.diseqc_send_burst(fe, |
2415 | (enum fe_sec_mini_cmd)parg); | |
1da177e4 LT |
2416 | fepriv->state = FESTATE_DISEQC; |
2417 | fepriv->status = 0; | |
2418 | } | |
2419 | break; | |
2420 | ||
2421 | case FE_SET_TONE: | |
dea74869 | 2422 | if (fe->ops.set_tone) { |
0df289a2 MCC |
2423 | err = fe->ops.set_tone(fe, |
2424 | (enum fe_sec_tone_mode)parg); | |
2425 | fepriv->tone = (enum fe_sec_tone_mode)parg; | |
1da177e4 LT |
2426 | fepriv->state = FESTATE_DISEQC; |
2427 | fepriv->status = 0; | |
2428 | } | |
2429 | break; | |
2430 | ||
2431 | case FE_SET_VOLTAGE: | |
dea74869 | 2432 | if (fe->ops.set_voltage) { |
0df289a2 MCC |
2433 | err = fe->ops.set_voltage(fe, |
2434 | (enum fe_sec_voltage)parg); | |
2435 | fepriv->voltage = (enum fe_sec_voltage)parg; | |
1da177e4 LT |
2436 | fepriv->state = FESTATE_DISEQC; |
2437 | fepriv->status = 0; | |
2438 | } | |
2439 | break; | |
2440 | ||
2441 | case FE_DISHNETWORK_SEND_LEGACY_CMD: | |
dea74869 | 2442 | if (fe->ops.dishnetwork_send_legacy_command) { |
0df289a2 MCC |
2443 | err = fe->ops.dishnetwork_send_legacy_command(fe, |
2444 | (unsigned long)parg); | |
1da177e4 LT |
2445 | fepriv->state = FESTATE_DISEQC; |
2446 | fepriv->status = 0; | |
dea74869 | 2447 | } else if (fe->ops.set_voltage) { |
83b75b04 N |
2448 | /* |
2449 | * NOTE: This is a fallback condition. Some frontends | |
2450 | * (stv0299 for instance) take longer than 8msec to | |
2451 | * respond to a set_voltage command. Those switches | |
2452 | * need custom routines to switch properly. For all | |
2030c032 | 2453 | * other frontends, the following should work ok. |
83b75b04 N |
2454 | * Dish network legacy switches (as used by Dish500) |
2455 | * are controlled by sending 9-bit command words | |
2456 | * spaced 8msec apart. | |
25985edc | 2457 | * the actual command word is switch/port dependent |
83b75b04 N |
2458 | * so it is up to the userspace application to send |
2459 | * the right command. | |
2460 | * The command must always start with a '0' after | |
2461 | * initialization, so parg is 8 bits and does not | |
2462 | * include the initialization or start bit | |
2463 | */ | |
c6eb8eaf | 2464 | unsigned long swcmd = ((unsigned long) parg) << 1; |
9056a23b TR |
2465 | ktime_t nexttime; |
2466 | ktime_t tv[10]; | |
83b75b04 N |
2467 | int i; |
2468 | u8 last = 1; | |
2469 | if (dvb_frontend_debug) | |
c6eb8eaf | 2470 | printk("%s switch command: 0x%04lx\n", __func__, swcmd); |
6b3f9998 | 2471 | nexttime = ktime_get_boottime(); |
83b75b04 | 2472 | if (dvb_frontend_debug) |
b9b1b3a8 | 2473 | tv[0] = nexttime; |
83b75b04 N |
2474 | /* before sending a command, initialize by sending |
2475 | * a 32ms 18V to the switch | |
2476 | */ | |
dea74869 | 2477 | fe->ops.set_voltage(fe, SEC_VOLTAGE_18); |
83b75b04 N |
2478 | dvb_frontend_sleep_until(&nexttime, 32000); |
2479 | ||
2480 | for (i = 0; i < 9; i++) { | |
2481 | if (dvb_frontend_debug) | |
6b3f9998 | 2482 | tv[i+1] = ktime_get_boottime(); |
c6eb8eaf | 2483 | if ((swcmd & 0x01) != last) { |
83b75b04 | 2484 | /* set voltage to (last ? 13V : 18V) */ |
dea74869 | 2485 | fe->ops.set_voltage(fe, (last) ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18); |
83b75b04 N |
2486 | last = (last) ? 0 : 1; |
2487 | } | |
c6eb8eaf | 2488 | swcmd = swcmd >> 1; |
83b75b04 N |
2489 | if (i != 8) |
2490 | dvb_frontend_sleep_until(&nexttime, 8000); | |
2491 | } | |
2492 | if (dvb_frontend_debug) { | |
2493 | printk("%s(%d): switch delay (should be 32k followed by all 8k\n", | |
46b4f7c1 | 2494 | __func__, fe->dvb->num); |
83b75b04 | 2495 | for (i = 1; i < 10; i++) |
9056a23b TR |
2496 | printk("%d: %d\n", i, |
2497 | (int) ktime_us_delta(tv[i], tv[i-1])); | |
83b75b04 N |
2498 | } |
2499 | err = 0; | |
2500 | fepriv->state = FESTATE_DISEQC; | |
2501 | fepriv->status = 0; | |
1da177e4 LT |
2502 | } |
2503 | break; | |
2504 | ||
2505 | case FE_DISEQC_RECV_SLAVE_REPLY: | |
dea74869 PB |
2506 | if (fe->ops.diseqc_recv_slave_reply) |
2507 | err = fe->ops.diseqc_recv_slave_reply(fe, (struct dvb_diseqc_slave_reply*) parg); | |
1da177e4 LT |
2508 | break; |
2509 | ||
2510 | case FE_ENABLE_HIGH_LNB_VOLTAGE: | |
dea74869 PB |
2511 | if (fe->ops.enable_high_lnb_voltage) |
2512 | err = fe->ops.enable_high_lnb_voltage(fe, (long) parg); | |
1da177e4 LT |
2513 | break; |
2514 | ||
9682cea2 | 2515 | case FE_SET_FRONTEND: |
be431b16 | 2516 | err = dvbv3_set_delivery_system(fe); |
04be0f76 MCC |
2517 | if (err) |
2518 | break; | |
2519 | ||
e399ce77 | 2520 | err = dtv_property_cache_sync(fe, c, parg); |
5bfaadde MCC |
2521 | if (err) |
2522 | break; | |
2523 | err = dtv_set_frontend(fe); | |
1da177e4 | 2524 | break; |
1da177e4 LT |
2525 | case FE_GET_EVENT: |
2526 | err = dvb_frontend_get_event (fe, parg, file->f_flags); | |
2527 | break; | |
2528 | ||
bb31d238 MCC |
2529 | case FE_GET_FRONTEND: { |
2530 | struct dtv_frontend_properties getp = fe->dtv_property_cache; | |
36cb557a | 2531 | |
bb31d238 MCC |
2532 | /* |
2533 | * Let's use our own copy of property cache, in order to | |
2534 | * avoid mangling with DTV zigzag logic, as drivers might | |
2535 | * return crap, if they don't check if the data is available | |
2536 | * before updating the properties cache. | |
2537 | */ | |
2538 | err = dtv_get_frontend(fe, &getp, parg); | |
2539 | break; | |
2540 | } | |
36cb557a | 2541 | case FE_SET_FRONTEND_TUNE_MODE: |
e18828e4 | 2542 | fepriv->tune_mode_flags = (unsigned long) parg; |
1b172e0c | 2543 | err = 0; |
36cb557a | 2544 | break; |
c2c1b415 | 2545 | } |
1da177e4 | 2546 | |
1da177e4 LT |
2547 | return err; |
2548 | } | |
2549 | ||
6b73eeaf | 2550 | |
1da177e4 LT |
2551 | static unsigned int dvb_frontend_poll(struct file *file, struct poll_table_struct *wait) |
2552 | { | |
2553 | struct dvb_device *dvbdev = file->private_data; | |
2554 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 2555 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
1da177e4 | 2556 | |
36bdbc3f | 2557 | dev_dbg_ratelimited(fe->dvb->device, "%s:\n", __func__); |
1da177e4 LT |
2558 | |
2559 | poll_wait (file, &fepriv->events.wait_queue, wait); | |
2560 | ||
2561 | if (fepriv->events.eventw != fepriv->events.eventr) | |
2562 | return (POLLIN | POLLRDNORM | POLLPRI); | |
2563 | ||
2564 | return 0; | |
2565 | } | |
2566 | ||
2567 | static int dvb_frontend_open(struct inode *inode, struct file *file) | |
2568 | { | |
2569 | struct dvb_device *dvbdev = file->private_data; | |
2570 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 2571 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
59b1842d | 2572 | struct dvb_adapter *adapter = fe->dvb; |
1da177e4 LT |
2573 | int ret; |
2574 | ||
36bdbc3f | 2575 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
18ed2860 | 2576 | if (fe->exit == DVB_FE_DEVICE_REMOVED) |
e36309f5 | 2577 | return -ENODEV; |
1da177e4 | 2578 | |
59b1842d DB |
2579 | if (adapter->mfe_shared) { |
2580 | mutex_lock (&adapter->mfe_lock); | |
6594690b DB |
2581 | |
2582 | if (adapter->mfe_dvbdev == NULL) | |
2583 | adapter->mfe_dvbdev = dvbdev; | |
2584 | ||
2585 | else if (adapter->mfe_dvbdev != dvbdev) { | |
2586 | struct dvb_device | |
2587 | *mfedev = adapter->mfe_dvbdev; | |
2588 | struct dvb_frontend | |
2589 | *mfe = mfedev->priv; | |
2590 | struct dvb_frontend_private | |
2591 | *mfepriv = mfe->frontend_priv; | |
2592 | int mferetry = (dvb_mfe_wait_time << 1); | |
2593 | ||
2594 | mutex_unlock (&adapter->mfe_lock); | |
2595 | while (mferetry-- && (mfedev->users != -1 || | |
2596 | mfepriv->thread != NULL)) { | |
2597 | if(msleep_interruptible(500)) { | |
2598 | if(signal_pending(current)) | |
2599 | return -EINTR; | |
59b1842d | 2600 | } |
6594690b DB |
2601 | } |
2602 | ||
2603 | mutex_lock (&adapter->mfe_lock); | |
2604 | if(adapter->mfe_dvbdev != dvbdev) { | |
59b1842d DB |
2605 | mfedev = adapter->mfe_dvbdev; |
2606 | mfe = mfedev->priv; | |
2607 | mfepriv = mfe->frontend_priv; | |
6594690b DB |
2608 | if (mfedev->users != -1 || |
2609 | mfepriv->thread != NULL) { | |
2610 | mutex_unlock (&adapter->mfe_lock); | |
2611 | return -EBUSY; | |
59b1842d | 2612 | } |
6594690b | 2613 | adapter->mfe_dvbdev = dvbdev; |
59b1842d | 2614 | } |
59b1842d DB |
2615 | } |
2616 | } | |
2617 | ||
48136e1e OE |
2618 | if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) { |
2619 | if ((ret = fe->ops.ts_bus_ctrl(fe, 1)) < 0) | |
59b1842d | 2620 | goto err0; |
2d196931 DH |
2621 | |
2622 | /* If we took control of the bus, we need to force | |
2623 | reinitialization. This is because many ts_bus_ctrl() | |
2624 | functions strobe the RESET pin on the demod, and if the | |
2625 | frontend thread already exists then the dvb_init() routine | |
2626 | won't get called (which is what usually does initial | |
2627 | register configuration). */ | |
2628 | fepriv->reinitialise = 1; | |
ba7e6f3e ST |
2629 | } |
2630 | ||
48136e1e OE |
2631 | if ((ret = dvb_generic_open (inode, file)) < 0) |
2632 | goto err1; | |
04c56d0e | 2633 | |
48136e1e | 2634 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { |
04c56d0e AQ |
2635 | /* normal tune mode when opened R/W */ |
2636 | fepriv->tune_mode_flags &= ~FE_TUNE_MODE_ONESHOT; | |
2637 | fepriv->tone = -1; | |
2638 | fepriv->voltage = -1; | |
2639 | ||
1da177e4 LT |
2640 | ret = dvb_frontend_start (fe); |
2641 | if (ret) | |
48136e1e | 2642 | goto err2; |
1da177e4 LT |
2643 | |
2644 | /* empty event queue */ | |
2645 | fepriv->events.eventr = fepriv->events.eventw = 0; | |
2646 | } | |
2647 | ||
59b1842d DB |
2648 | if (adapter->mfe_shared) |
2649 | mutex_unlock (&adapter->mfe_lock); | |
1da177e4 | 2650 | return ret; |
48136e1e OE |
2651 | |
2652 | err2: | |
2653 | dvb_generic_release(inode, file); | |
2654 | err1: | |
2655 | if (dvbdev->users == -1 && fe->ops.ts_bus_ctrl) | |
2656 | fe->ops.ts_bus_ctrl(fe, 0); | |
59b1842d DB |
2657 | err0: |
2658 | if (adapter->mfe_shared) | |
2659 | mutex_unlock (&adapter->mfe_lock); | |
48136e1e | 2660 | return ret; |
1da177e4 LT |
2661 | } |
2662 | ||
2663 | static int dvb_frontend_release(struct inode *inode, struct file *file) | |
2664 | { | |
2665 | struct dvb_device *dvbdev = file->private_data; | |
2666 | struct dvb_frontend *fe = dvbdev->priv; | |
0c53c70f | 2667 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
ca5be9cd | 2668 | int ret; |
1da177e4 | 2669 | |
36bdbc3f | 2670 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
1da177e4 | 2671 | |
b9d5efcc | 2672 | if ((file->f_flags & O_ACCMODE) != O_RDONLY) { |
1da177e4 | 2673 | fepriv->release_jiffies = jiffies; |
b9d5efcc AO |
2674 | mb(); |
2675 | } | |
1da177e4 | 2676 | |
ca5be9cd MR |
2677 | ret = dvb_generic_release (inode, file); |
2678 | ||
48136e1e | 2679 | if (dvbdev->users == -1) { |
b9d5efcc | 2680 | wake_up(&fepriv->wait_queue); |
18ed2860 | 2681 | if (fe->exit != DVB_FE_NO_EXIT) |
48136e1e | 2682 | wake_up(&dvbdev->wait_queue); |
48136e1e OE |
2683 | if (fe->ops.ts_bus_ctrl) |
2684 | fe->ops.ts_bus_ctrl(fe, 0); | |
ca5be9cd | 2685 | } |
48136e1e | 2686 | |
ca5be9cd | 2687 | return ret; |
1da177e4 LT |
2688 | } |
2689 | ||
784e29d2 | 2690 | static const struct file_operations dvb_frontend_fops = { |
1da177e4 | 2691 | .owner = THIS_MODULE, |
16ef8def | 2692 | .unlocked_ioctl = dvb_generic_ioctl, |
1da177e4 LT |
2693 | .poll = dvb_frontend_poll, |
2694 | .open = dvb_frontend_open, | |
6038f373 AB |
2695 | .release = dvb_frontend_release, |
2696 | .llseek = noop_llseek, | |
1da177e4 LT |
2697 | }; |
2698 | ||
06bae122 AP |
2699 | int dvb_frontend_suspend(struct dvb_frontend *fe) |
2700 | { | |
2701 | int ret = 0; | |
2702 | ||
2703 | dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num, | |
2704 | fe->id); | |
2705 | ||
59d7889a MCC |
2706 | if (fe->ops.tuner_ops.suspend) |
2707 | ret = fe->ops.tuner_ops.suspend(fe); | |
2708 | else if (fe->ops.tuner_ops.sleep) | |
06bae122 AP |
2709 | ret = fe->ops.tuner_ops.sleep(fe); |
2710 | ||
2711 | if (fe->ops.sleep) | |
2712 | ret = fe->ops.sleep(fe); | |
2713 | ||
2714 | return ret; | |
2715 | } | |
2716 | EXPORT_SYMBOL(dvb_frontend_suspend); | |
2717 | ||
2718 | int dvb_frontend_resume(struct dvb_frontend *fe) | |
2719 | { | |
2720 | struct dvb_frontend_private *fepriv = fe->frontend_priv; | |
2721 | int ret = 0; | |
2722 | ||
2723 | dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num, | |
2724 | fe->id); | |
2725 | ||
87cd0fa8 | 2726 | fe->exit = DVB_FE_DEVICE_RESUME; |
06bae122 AP |
2727 | if (fe->ops.init) |
2728 | ret = fe->ops.init(fe); | |
2729 | ||
59d7889a MCC |
2730 | if (fe->ops.tuner_ops.resume) |
2731 | ret = fe->ops.tuner_ops.resume(fe); | |
2732 | else if (fe->ops.tuner_ops.init) | |
06bae122 AP |
2733 | ret = fe->ops.tuner_ops.init(fe); |
2734 | ||
3663b31b MCC |
2735 | if (fe->ops.set_tone && fepriv->tone != -1) |
2736 | fe->ops.set_tone(fe, fepriv->tone); | |
2737 | if (fe->ops.set_voltage && fepriv->voltage != -1) | |
2738 | fe->ops.set_voltage(fe, fepriv->voltage); | |
2739 | ||
87cd0fa8 | 2740 | fe->exit = DVB_FE_NO_EXIT; |
06bae122 AP |
2741 | fepriv->state = FESTATE_RETUNE; |
2742 | dvb_frontend_wakeup(fe); | |
2743 | ||
2744 | return ret; | |
2745 | } | |
2746 | EXPORT_SYMBOL(dvb_frontend_resume); | |
2747 | ||
1da177e4 LT |
2748 | int dvb_register_frontend(struct dvb_adapter* dvb, |
2749 | struct dvb_frontend* fe) | |
2750 | { | |
2751 | struct dvb_frontend_private *fepriv; | |
c1b31b1e | 2752 | const struct dvb_device dvbdev_template = { |
1da177e4 LT |
2753 | .users = ~0, |
2754 | .writers = 1, | |
2755 | .readers = (~0)-1, | |
2756 | .fops = &dvb_frontend_fops, | |
c1b31b1e MCC |
2757 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
2758 | .name = fe->ops.info.name, | |
2759 | #endif | |
1da177e4 LT |
2760 | .kernel_ioctl = dvb_frontend_ioctl |
2761 | }; | |
2762 | ||
36bdbc3f | 2763 | dev_dbg(dvb->device, "%s:\n", __func__); |
1da177e4 | 2764 | |
3593cab5 | 2765 | if (mutex_lock_interruptible(&frontend_mutex)) |
1da177e4 LT |
2766 | return -ERESTARTSYS; |
2767 | ||
7408187d | 2768 | fe->frontend_priv = kzalloc(sizeof(struct dvb_frontend_private), GFP_KERNEL); |
1da177e4 | 2769 | if (fe->frontend_priv == NULL) { |
3593cab5 | 2770 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
2771 | return -ENOMEM; |
2772 | } | |
0c53c70f | 2773 | fepriv = fe->frontend_priv; |
1da177e4 | 2774 | |
a0a4714c | 2775 | sema_init(&fepriv->sem, 1); |
1da177e4 LT |
2776 | init_waitqueue_head (&fepriv->wait_queue); |
2777 | init_waitqueue_head (&fepriv->events.wait_queue); | |
03b76123 | 2778 | mutex_init(&fepriv->events.mtx); |
1da177e4 LT |
2779 | fe->dvb = dvb; |
2780 | fepriv->inversion = INVERSION_OFF; | |
2781 | ||
36bdbc3f AP |
2782 | dev_info(fe->dvb->device, |
2783 | "DVB: registering adapter %i frontend %i (%s)...\n", | |
2784 | fe->dvb->num, fe->id, fe->ops.info.name); | |
1da177e4 LT |
2785 | |
2786 | dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template, | |
df2f94e5 | 2787 | fe, DVB_DEVICE_FRONTEND, 0); |
1da177e4 | 2788 | |
5bfaadde MCC |
2789 | /* |
2790 | * Initialize the cache to the proper values according with the | |
2791 | * first supported delivery system (ops->delsys[0]) | |
2792 | */ | |
240ab508 | 2793 | |
be431b16 | 2794 | fe->dtv_property_cache.delivery_system = fe->ops.delsys[0]; |
5bfaadde MCC |
2795 | dvb_frontend_clear_cache(fe); |
2796 | ||
3593cab5 | 2797 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
2798 | return 0; |
2799 | } | |
2800 | EXPORT_SYMBOL(dvb_register_frontend); | |
2801 | ||
2802 | int dvb_unregister_frontend(struct dvb_frontend* fe) | |
2803 | { | |
0c53c70f | 2804 | struct dvb_frontend_private *fepriv = fe->frontend_priv; |
36bdbc3f | 2805 | dev_dbg(fe->dvb->device, "%s:\n", __func__); |
1da177e4 | 2806 | |
57861b43 | 2807 | mutex_lock(&frontend_mutex); |
ca5be9cd | 2808 | dvb_frontend_stop (fe); |
57861b43 MR |
2809 | mutex_unlock(&frontend_mutex); |
2810 | ||
2811 | if (fepriv->dvbdev->users < -1) | |
2812 | wait_event(fepriv->dvbdev->wait_queue, | |
2813 | fepriv->dvbdev->users==-1); | |
2814 | ||
3593cab5 | 2815 | mutex_lock(&frontend_mutex); |
1da177e4 | 2816 | dvb_unregister_device (fepriv->dvbdev); |
d9955060 | 2817 | |
1da177e4 LT |
2818 | /* fe is invalid now */ |
2819 | kfree(fepriv); | |
3593cab5 | 2820 | mutex_unlock(&frontend_mutex); |
1da177e4 LT |
2821 | return 0; |
2822 | } | |
2823 | EXPORT_SYMBOL(dvb_unregister_frontend); | |
f52a838b | 2824 | |
149ef72d | 2825 | #ifdef CONFIG_MEDIA_ATTACH |
f52a838b AQ |
2826 | void dvb_frontend_detach(struct dvb_frontend* fe) |
2827 | { | |
2828 | void *ptr; | |
2829 | ||
2830 | if (fe->ops.release_sec) { | |
2831 | fe->ops.release_sec(fe); | |
4647f487 | 2832 | dvb_detach(fe->ops.release_sec); |
f52a838b AQ |
2833 | } |
2834 | if (fe->ops.tuner_ops.release) { | |
2835 | fe->ops.tuner_ops.release(fe); | |
4647f487 | 2836 | dvb_detach(fe->ops.tuner_ops.release); |
f52a838b | 2837 | } |
2426a27e MK |
2838 | if (fe->ops.analog_ops.release) { |
2839 | fe->ops.analog_ops.release(fe); | |
4647f487 | 2840 | dvb_detach(fe->ops.analog_ops.release); |
2426a27e | 2841 | } |
f52a838b AQ |
2842 | ptr = (void*)fe->ops.release; |
2843 | if (ptr) { | |
2844 | fe->ops.release(fe); | |
4647f487 | 2845 | dvb_detach(ptr); |
f52a838b AQ |
2846 | } |
2847 | } | |
2848 | #else | |
2849 | void dvb_frontend_detach(struct dvb_frontend* fe) | |
2850 | { | |
2851 | if (fe->ops.release_sec) | |
2852 | fe->ops.release_sec(fe); | |
2853 | if (fe->ops.tuner_ops.release) | |
2854 | fe->ops.tuner_ops.release(fe); | |
2426a27e MK |
2855 | if (fe->ops.analog_ops.release) |
2856 | fe->ops.analog_ops.release(fe); | |
f52a838b AQ |
2857 | if (fe->ops.release) |
2858 | fe->ops.release(fe); | |
2859 | } | |
2860 | #endif | |
2861 | EXPORT_SYMBOL(dvb_frontend_detach); |