linux.git/include/uapi/linux/lirc.h, branch v5.18-rc4

media: lirc: remove unused feature LIRC_CAN_SET_REC_DUTY_CYCLE

2022-03-07T15:29:07+00:00

There is no hardware which can filter input on the duty cycle, so no
driver implements this. On top of that, LIRC_CAN_SET_REC_DUTY_CYCLE
has the same value as LIRC_CAN_MEASURE_CARRIER (0x02000000).

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

media: lirc: report ir receiver overflow

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

If the driver reports that the hardware had an overflow, report this to
userspace. It would be nice to know when this happens, and not just get
a long space.

This change has been tested with lircd, ir-ctl, and ir-keytable.

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

media: lirc: remove unused lirc features

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

These features have never been implemented by any lirc driver, including
staging or out of tree drivers. The ioctls for these feaures were removed
in commit d55f09abe24b ("[media] lirc.h: remove several unused ioctls").

So, we can safely remove them.

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

media: lirc: remove out of date comment

2021-05-21T13:03:50+00:00

This file has been updated many times since 2010.

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

media: rc: improve LIRC documentation

2020-11-26T13:19:10+00:00

Add documentation for enum rc_proto and struct lirc_scancode
at the generated docs.

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

media: lirc: ensure RC_PROTO_MAX has documentation

2020-11-25T13:52:04+00:00

The enum rc_proto value RC_PROTO_MAX has no documentation, this is causing
a warning while building the documentation.

Fixes: 72e637fec558 ("media: rc: validate that "rc_proto" is reasonable")
Reported-by: Stephen Rothwell 
Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

media: rc: validate that "rc_proto" is reasonable

2020-11-17T05:57:10+00:00

Smatch complains that "rc_proto" comes from the user and it can result
in shift wrapping in ir_raw_encode_scancode()

    drivers/media/rc/rc-ir-raw.c:526 ir_raw_encode_scancode()
    error: undefined (user controlled) shift '1 << protocol'

This is true, but I reviewed the surrounding code and it appears
harmless. Anyway, let's verify that "rc_proto" is valid as a kernel
hardening measure.

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

media: rc: xbox_remote: add protocol and set timeout

2019-04-22T17:02:53+00:00

The timestamps in ir-keytable -t output showed that the Xbox DVD
IR dongle decodes scancodes every 64ms. The last scancode of a
longer button press is decodes 64ms after the last-but-one which
indicates the decoder doesn't use a timeout but decodes on the last
edge of the signal.

267.042629: lirc protocol(unknown): scancode = 0xace
267.042665: event type EV_MSC(0x04): scancode = 0xace
267.042665: event type EV_KEY(0x01) key_down: KEY_1(0x0002)
267.042665: event type EV_SYN(0x00).
267.106625: lirc protocol(unknown): scancode = 0xace
267.106643: event type EV_MSC(0x04): scancode = 0xace
267.106643: event type EV_SYN(0x00).
267.170623: lirc protocol(unknown): scancode = 0xace
267.170638: event type EV_MSC(0x04): scancode = 0xace
267.170638: event type EV_SYN(0x00).
267.234621: lirc protocol(unknown): scancode = 0xace
267.234636: event type EV_MSC(0x04): scancode = 0xace
267.234636: event type EV_SYN(0x00).
267.298623: lirc protocol(unknown): scancode = 0xace
267.298638: event type EV_MSC(0x04): scancode = 0xace
267.298638: event type EV_SYN(0x00).
267.543345: event type EV_KEY(0x01) key_down: KEY_1(0x0002)
267.543345: event type EV_SYN(0x00).
267.570015: event type EV_KEY(0x01) key_up: KEY_1(0x0002)
267.570015: event type EV_SYN(0x00).

Add a protocol with the repeat value and set the timeout in the
driver to 10ms (to have a bit of headroom for delays) so the Xbox
DVD remote performs more responsive.

Signed-off-by: Matthias Reichl 
Acked-by: Benjamin Valentin 
Signed-off-by: Sean Young 
Signed-off-by: Mauro Carvalho Chehab

media: rc: rcmm decoder and encoder

2019-02-18T20:39:49+00:00

media: add support for RCMM infrared remote controls.

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

media: rc: add ioctl to get the current timeout

2018-04-20T13:15:18+00:00

Since the kernel now modifies the timeout, make it possible to retrieve
the current value.

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