kernel/linux.git/include/media/rc-core.h, branch v6.18.22

media: rc: reduce useless padding in struct rc_dev etc

2025-03-04T14:56:11+00:00

Reorder the fields in these structs so that we waste less space due to padding. pahole shows that lirc_fh is 8 bytes smaller, and rc_dev is 32 bytes smaller. Signed-off-by: Sean Young Signed-off-by: Hans Verkuil

media: rc: remove unused tx_resolution field

2024-07-31T09:21:56+00:00

The tx_resolution field is never read. In theory you can imagine this field being useful for detecting whether the transmitter has the resolution for the message you are trying to send, but I am not aware of any hardware where this could be an issue. Just remove. Signed-off-by: Sean Young Signed-off-by: Hans Verkuil

media: rc-core: rename ir_raw_event_reset to ir_raw_event_overflow

2022-01-28T18:32:50+00:00

The driver report a reset event when the hardware reports and overflow. There is no reason to have a generic "reset" event. Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab

media: lirc: simplify gap calculation

2022-01-24T00:38:32+00:00

When a driver reports a timeout, no more IR activity will be reported until the next pulse. A space is inserted between the timeout and the next pulse, based on ktime. The timeout reports already a duration, so this duration should not be added to the gap. Otherwise there is no change to the functionality. Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab

media: lirc: always send timeout reports

2021-12-14T14:09:12+00:00

Without timeout reports, it is impossible to decode many protocols since it is not known when the transmission ends. timeout reports are sent by default, but can be turned off. There is no reason to turn them off, and I cannot find any software which does this, so we can safely remove it. This makes the ioctl LIRC_SET_REC_TIMEOUT_REPORTS a no-op. Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab

media: rc: rename s_learning_mode() to s_wideband_receiver()

2021-07-22T06:21:53+00:00

The s_learning_mode() function is called in response to the ioctl LIRC_SET_WIDEBAND_RECEIVER, so rename it to s_wideband_receiver(). Learning mode is when both the wideband receiver is turned on and carrier reports are enabled. Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab

media: rc-loopback: max_timeout of UINT_MAX does not work

2021-07-22T06:21:03+00:00

Any timeout larger than LIRC_VALUE_MASK cannot work for the lirc uapi. LIRC_VALUE_MASK is about 16 seconds which is more than enough. Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab

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