linux-toradex.git/include/media/rc-core.h, branch v5.11-rc6

media: rc: harmonize infrared durations to microseconds

2020-09-03T14:18:55+00:00

rc-core kapi uses nanoseconds for infrared durations for receiving, and
microseconds for sending. The uapi already uses microseconds for both,
so this patch does not change the uapi.

Infrared durations do not need nanosecond resolution. IR protocols do not
have durations shorter than about 100 microseconds. Some IR hardware offers
250 microseconds resolution, which is sufficient for most protocols.
Better hardware has 50 microsecond resolution and is enough for every
protocol I am aware off.

Unify on microseconds everywhere. This simplifies the code since less
conversion between microseconds and nanoseconds needs to be done.

This affects:
 - rx_resolution member of struct rc_dev
 - timeout member of struct rc_dev
 - duration member in struct ir_raw_event

Cc: "Bruno Prémont" 
Cc: Hans Verkuil 
Cc: Maxim Levitsky 
Cc: Patrick Lerda 
Cc: Kevin Hilman 
Cc: Neil Armstrong 
Cc: Jerome Brunet 
Cc: Martin Blumenstingl 
Cc: Sean Wang 
Cc: Matthias Brugger 
Cc: Patrice Chotard 
Cc: Maxime Ripard 
Cc: Chen-Yu Tsai 
Cc: "David Härdeman" 
Cc: Benjamin Valentin 
Cc: Antti Palosaari 
Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

media: rc: make scancodes 64 bit

2020-03-12T08:20:46+00:00

There are many protocols that encode more than 32 bit. We want 64 bit
support so that BPF IR decoders can decode more than 32 bit. None of
the existing kernel IR decoders/encoders support 64 bit, for now.

The MSC_SCAN event can only contain 32 bit scancodes, so we only generate
MSC_SCAN events if the scancode fits into 32 bits. The full 64 bit
scancode can be read from the lirc chardev.

Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285

2019-06-05T15:36:37+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation version 2 of the license this program
  is distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 100 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Alexios Zavras 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.918357685@linutronix.de
Signed-off-by: Greg Kroah-Hartman

media: rc: Remove init_ir_raw_event and DEFINE_IR_RAW_EVENT macros

2018-10-04T18:22:27+00:00

This can be done with c99 initializers, which makes the code cleaner
and more transparent. It does require gcc 4.6, because of this bug
in earlier versions:

	https://gcc.gnu.org/bugzilla/show_bug.cgi?id=10676

Since commit cafa0010cd51 ("Raise the minimum required gcc version to
4.6"), this is the case.

Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

media: rc: default to idle on at startup or after reset

2018-05-14T11:14:51+00:00

Any spaces events received after a reset or startup should be discarded,
so ensure the rc device is in idle mode.

This also makes it much easier to detect incorrect raw events, as we will
do in a following commit.

Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

media: rc: meson-ir: add timeout on idle

2018-03-21T17:54:51+00:00

Meson doesn't seem to be able to generate timeout events in hardware. So
install a software timer to generate the timeout events required by the
decoders to prevent "ghost keypresses".

Reported-by: Matthias Reichl 
Tested-by: Matthias Reichl 
Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

media: rc: remove IR_dprintk() from rc-core

2018-02-14T19:15:46+00:00

Use dev_dbg() rather than custom debug function.

Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

media: rc-core.h: minor adjustments at rc_driver_type doc

2017-12-18T15:16:04+00:00

The description of this enum doesn't match what it
actually represents. Adjust it.

Acked-by: Sakari Ailus 
Signed-off-by: Mauro Carvalho Chehab

media: cec: move cec autorepeat handling to rc-core

2017-12-14T15:35:30+00:00

CEC autorepeat is different than other protocols. Autorepeat is triggered
by the first repeated user control pressed CEC message, rather than a
fixed REP_DELAY.

This change also does away with the KEY_UP event directly after the first
KEY_DOWN event, which was used to stop autorepeat from starting.

See commit a9a249a2c997 ("media: cec: fix remote control passthrough")
for the original change.

Acked-by: Hans Verkuil 
Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

media: lirc: allow lirc device to be opened more than once

2017-12-14T15:35:25+00:00

This makes it possible for lircd to read from a lirc chardev, and not
keep it busy.

Note that this changes the default for timeout reports to on. lircd
already enables timeout reports when it opens a lirc device, leaving
them on until the next reboot.

Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab