Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
.. Permission is granted to copy, distribute and/or modify this
.. document under the terms of the GNU Free Documentation License,
.. Version 1.1 or any later version published by the Free Software
.. Foundation, with no Invariant Sections, no Front-Cover Texts
.. and no Back-Cover Texts. A copy of the license is included at
.. Documentation/media/uapi/fdl-appendix.rst.
..
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections

.. _Remote_controllers_tables:

************************
Remote controller tables
************************

Unfortunately, for several years, there was no effort to create uniform
IR keycodes for different devices. This caused the same IR keyname to be
mapped completely differently on different IR devices. This resulted
that the same IR keyname to be mapped completely different on different
IR's. Due to that, V4L2 API now specifies a standard for mapping Media
keys on IR.

This standard should be used by both V4L/DVB drivers and userspace
applications

The modules register the remote as keyboard within the linux input
layer. This means that the IR key strokes will look like normal keyboard
key strokes (if CONFIG_INPUT_KEYBOARD is enabled). Using the event
devices (CONFIG_INPUT_EVDEV) it is possible for applications to access
the remote via /dev/input/event devices.


.. _rc_standard_keymap:

.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|

.. flat-table:: IR default keymapping
    :header-rows:  0
    :stub-columns: 0
    :widths:       1 1 2


    -  .. row 1

       -  Key code

       -  Meaning

       -  Key examples on IR

    -  .. row 2

       -  **Numeric keys**

    -  .. row 3

       -  ``KEY_NUMERIC_0``

       -  Keyboard digit 0

       -  0

    -  .. row 4

       -  ``KEY_NUMERIC_1``

       -  Keyboard digit 1

       -  1

    -  .. row 5

       -  ``KEY_NUMERIC_2``

       -  Keyboard digit 2

       -  2

    -  .. row 6

       -  ``KEY_NUMERIC_3``

       -  Keyboard digit 3

       -  3

    -  .. row 7

       -  ``KEY_NUMERIC_4``

       -  Keyboard digit 4

       -  4

    -  .. row 8

       -  ``KEY_NUMERIC_5``

       -  Keyboard digit 5

       -  5

    -  .. row 9

       -  ``KEY_NUMERIC_6``

       -  Keyboard digit 6

       -  6

    -  .. row 10

       -  ``KEY_NUMERIC_7``

       -  Keyboard digit 7

       -  7

    -  .. row 11

       -  ``KEY_NUMERIC_8``

       -  Keyboard digit 8

       -  8

    -  .. row 12

       -  ``KEY_NUMERIC_9``

       -  Keyboard digit 9

       -  9

    -  .. row 13

       -  **Movie play control**

    -  .. row 14

       -  ``KEY_FORWARD``

       -  Instantly advance in time

       -  >> / FORWARD

    -  .. row 15

       -  ``KEY_BACK``

       -  Instantly go back in time

       -  <<< / BACK

    -  .. row 16

       -  ``KEY_FASTFORWARD``

       -  Play movie faster

       -  >>> / FORWARD

    -  .. row 17

       -  ``KEY_REWIND``

       -  Play movie back

       -  REWIND / BACKWARD

    -  .. row 18

       -  ``KEY_NEXT``

       -  Select next chapter / sub-chapter / interval

       -  NEXT / SKIP

    -  .. row 19

       -  ``KEY_PREVIOUS``

       -  Select previous chapter / sub-chapter / interval

       -  << / PREV / PREVIOUS

    -  .. row 20

       -  ``KEY_AGAIN``

       -  Repeat the video or a video interval

       -  REPEAT / LOOP / RECALL

    -  .. row 21

       -  ``KEY_PAUSE``

       -  Pause stream

       -  PAUSE / FREEZE

    -  .. row 22

       -  ``KEY_PLAY``

       -  Play movie at the normal timeshift

       -  NORMAL TIMESHIFT / LIVE / >

    -  .. row 23

       -  ``KEY_PLAYPAUSE``

       -  Alternate between play and pause

       -  PLAY / PAUSE

    -  .. row 24

       -  ``KEY_STOP``

       -  Stop stream

       -  STOP

    -  .. row 25

       -  ``KEY_RECORD``

       -  Start/stop recording stream

       -  CAPTURE / REC / RECORD/PAUSE

    -  .. row 26

       -  ``KEY_CAMERA``

       -  Take a picture of the image

       -  CAMERA ICON / CAPTURE / SNAPSHOT

    -  .. row 27

       -  ``KEY_SHUFFLE``

       -  Enable shuffle mode

       -  SHUFFLE

    -  .. row 28

       -  ``KEY_TIME``

       -  Activate time shift mode

       -  TIME SHIFT

    -  .. row 29

       -  ``KEY_TITLE``

       -  Allow changing the chapter

       -  CHAPTER

    -  .. row 30

       -  ``KEY_SUBTITLE``

       -  Allow changing the subtitle

       -  SUBTITLE

    -  .. row 31

       -  **Image control**

    -  .. row 32

       -  ``KEY_BRIGHTNESSDOWN``

       -  Decrease Brightness

       -  BRIGHTNESS DECREASE

    -  .. row 33

       -  ``KEY_BRIGHTNESSUP``

       -  Increase Brightness

       -  BRIGHTNESS INCREASE

    -  .. row 34

       -  ``KEY_ANGLE``

       -  Switch video camera angle (on videos with more than one angle
	  stored)

       -  ANGLE / SWAP

    -  .. row 35

       -  ``KEY_EPG``

       -  Open the Elecrowonic Play Guide (EPG)

       -  EPG / GUIDE

    -  .. row 36

       -  ``KEY_TEXT``

       -  Activate/change closed caption mode

       -  CLOSED CAPTION/TELETEXT / DVD TEXT / TELETEXT / TTX

    -  .. row 37

       -  **Audio control**

    -  .. row 38

       -  ``KEY_AUDIO``

       -  Change audio source

       -  AUDIO SOURCE / AUDIO / MUSIC

    -  .. row 39

       -  ``KEY_MUTE``

       -  Mute/unmute audio

       -  MUTE / DEMUTE / UNMUTE

    -  .. row 40

       -  ``KEY_VOLUMEDOWN``

       -  Decrease volume

       -  VOLUME- / VOLUME DOWN

    -  .. row 41

       -  ``KEY_VOLUMEUP``

       -  Increase volume

       -  VOLUME+ / VOLUME UP

    -  .. row 42

       -  ``KEY_MODE``

       -  Change sound mode

       -  MONO/STEREO

    -  .. row 43

       -  ``KEY_LANGUAGE``

       -  Select Language

       -  1ST / 2ND LANGUAGE / DVD LANG / MTS/SAP / MTS SEL

    -  .. row 44

       -  **Channel control**

    -  .. row 45

       -  ``KEY_CHANNEL``

       -  Go to the next favorite channel

       -  ALT / CHANNEL / CH SURFING / SURF / FAV

    -  .. row 46

       -  ``KEY_CHANNELDOWN``

       -  Decrease channel sequentially

       -  CHANNEL - / CHANNEL DOWN / DOWN

    -  .. row 47

       -  ``KEY_CHANNELUP``

       -  Increase channel sequentially

       -  CHANNEL + / CHANNEL UP / UP

    -  .. row 48

       -  ``KEY_DIGITS``

       -  Use more than one digit for channel

       -  PLUS / 100/ 1xx / xxx / -/-- / Single Double Triple Digit

    -  .. row 49

       -  ``KEY_SEARCH``

       -  Start channel autoscan

       -  SCAN / AUTOSCAN

    -  .. row 50

       -  **Colored keys**

    -  .. row 51

       -  ``KEY_BLUE``

       -  IR Blue key

       -  BLUE

    -  .. row 52

       -  ``KEY_GREEN``

       -  IR Green Key

       -  GREEN

    -  .. row 53

       -  ``KEY_RED``

       -  IR Red key

       -  RED

    -  .. row 54

       -  ``KEY_YELLOW``

       -  IR Yellow key

       -  YELLOW

    -  .. row 55

       -  **Media selection**

    -  .. row 56

       -  ``KEY_CD``

       -  Change input source to Compact Disc

       -  CD

    -  .. row 57

       -  ``KEY_DVD``

       -  Change input to DVD

       -  DVD / DVD MENU

    -  .. row 58

       -  ``KEY_EJECTCLOSECD``

       -  Open/close the CD/DVD player

       -  -> ) / CLOSE / OPEN

    -  .. row 59

       -  ``KEY_MEDIA``

       -  Turn on/off Media application

       -  PC/TV / TURN ON/OFF APP

    -  .. row 60

       -  ``KEY_PC``

       -  Selects from TV to PC

       -  PC

    -  .. row 61

       -  ``KEY_RADIO``

       -  Put into AM/FM radio mode

       -  RADIO / TV/FM / TV/RADIO / FM / FM/RADIO

    -  .. row 62

       -  ``KEY_TV``

       -  Select tv mode

       -  TV / LIVE TV

    -  .. row 63

       -  ``KEY_TV2``

       -  Select Cable mode

       -  AIR/CBL

    -  .. row 64

       -  ``KEY_VCR``

       -  Select VCR mode

       -  VCR MODE / DTR

    -  .. row 65

       -  ``KEY_VIDEO``

       -  Alternate between input modes

       -  SOURCE / SELECT / DISPLAY / SWITCH INPUTS / VIDEO

    -  .. row 66

       -  **Power control**

    -  .. row 67

       -  ``KEY_POWER``

       -  Turn on/off computer

       -  SYSTEM POWER / COMPUTER POWER

    -  .. row 68

       -  ``KEY_POWER2``

       -  Turn on/off application

       -  TV ON/OFF / POWER

    -  .. row 69

       -  ``KEY_SLEEP``

       -  Activate sleep timer

       -  SLEEP / SLEEP TIMER

    -  .. row 70

       -  ``KEY_SUSPEND``

       -  Put computer into suspend mode

       -  STANDBY / SUSPEND

    -  .. row 71

       -  **Window control**

    -  .. row 72

       -  ``KEY_CLEAR``

       -  Stop stream and return to default input video/audio

       -  CLEAR / RESET / BOSS KEY

    -  .. row 73

       -  ``KEY_CYCLEWINDOWS``

       -  Minimize windows and move to the next one

       -  ALT-TAB / MINIMIZE / DESKTOP

    -  .. row 74

       -  ``KEY_FAVORITES``

       -  Open the favorites stream window

       -  TV WALL / Favorites

    -  .. row 75

       -  ``KEY_MENU``

       -  Call application menu

       -  2ND CONTROLS (USA: MENU) / DVD/MENU / SHOW/HIDE CTRL

    -  .. row 76

       -  ``KEY_NEW``

       -  Open/Close Picture in Picture

       -  PIP

    -  .. row 77

       -  ``KEY_OK``

       -  Send a confirmation code to application

       -  OK / ENTER / RETURN

    -  .. row 78

       -  ``KEY_ASPECT_RATIO``

       -  Select screen aspect ratio

       -  4:3 16:9 SELECT

    -  .. row 79

       -  ``KEY_FULL_SCREEN``

       -  Put device into zoom/full screen mode

       -  ZOOM / FULL SCREEN / ZOOM+ / HIDE PANNEL / SWITCH

    -  .. row 80

       -  **Navigation keys**

    -  .. row 81

       -  ``KEY_ESC``

       -  Cancel current operation

       -  CANCEL / BACK

    -  .. row 82

       -  ``KEY_HELP``

       -  Open a Help window

       -  HELP

    -  .. row 83

       -  ``KEY_HOMEPAGE``

       -  Navigate to Homepage

       -  HOME

    -  .. row 84

       -  ``KEY_INFO``

       -  Open On Screen Display

       -  DISPLAY INFORMATION / OSD

    -  .. row 85

       -  ``KEY_WWW``

       -  Open the default browser

       -  WEB

    -  .. row 86

       -  ``KEY_UP``

       -  Up key

       -  UP

    -  .. row 87

       -  ``KEY_DOWN``

       -  Down key

       -  DOWN

    -  .. row 88

       -  ``KEY_LEFT``

       -  Left key

       -  LEFT

    -  .. row 89

       -  ``KEY_RIGHT``

       -  Right key

       -  RIGHT

    -  .. row 90

       -  **Miscellaneous keys**

    -  .. row 91

       -  ``KEY_DOT``

       -  Return a dot

       -  .

    -  .. row 92

       -  ``KEY_FN``

       -  Select a function

       -  FUNCTION


It should be noted that, sometimes, there some fundamental missing keys
at some cheaper IR's. Due to that, it is recommended to:


.. _rc_keymap_notes:

.. flat-table:: Notes
    :header-rows:  0
    :stub-columns: 0


    -  .. row 1

       -  On simpler IR's, without separate channel keys, you need to map UP
	  as ``KEY_CHANNELUP``

    -  .. row 2

       -  On simpler IR's, without separate channel keys, you need to map
	  DOWN as ``KEY_CHANNELDOWN``

    -  .. row 3

       -  On simpler IR's, without separate volume keys, you need to map
	  LEFT as ``KEY_VOLUMEDOWN``

    -  .. row 4

       -  On simpler IR's, without separate volume keys, you need to map
	  RIGHT as ``KEY_VOLUMEUP``