media: cec: add support for Absolute Volume Control

Add support for this new CEC message. This was added in HDMI 2.1a.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Ca

media: cec: add support for Absolute Volume Control

Add support for this new CEC message. This was added in HDMI 2.1a.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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media: uapi/linux/cec-funcs.h: set delay to 1 if unnused

If the audio_out_delay value is unused, then set it to 1, not 0.
The value 0 is reserved, and 1 is a much safer value since it
translates to

media: uapi/linux/cec-funcs.h: set delay to 1 if unnused

If the audio_out_delay value is unused, then set it to 1, not 0.
The value 0 is reserved, and 1 is a much safer value since it
translates to a delay of (1 - 1) * 2 = 0 ms.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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media: cec-funcs.h: use new CEC_OP_UI_CMD defines

When the new CEC_OP_UI_CMD defines were added I forgot to update this
header to use these new defines. This is now fixed.

Signed-off-by: Hans Verku

media: cec-funcs.h: use new CEC_OP_UI_CMD defines

When the new CEC_OP_UI_CMD defines were added I forgot to update this
header to use these new defines. This is now fixed.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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media: cec-funcs.h: add status_req checks

The CEC_MSG_GIVE_DECK_STATUS and CEC_MSG_GIVE_TUNER_DEVICE_STATUS commands
both have a status_req argument: ON, OFF, ONCE. If ON or ONCE, then the
follower

media: cec-funcs.h: add status_req checks

The CEC_MSG_GIVE_DECK_STATUS and CEC_MSG_GIVE_TUNER_DEVICE_STATUS commands
both have a status_req argument: ON, OFF, ONCE. If ON or ONCE, then the
follower will reply with a STATUS message. Either once or whenever the
status changes (status_req == ON).

If status_req == OFF, then it will stop sending continuous status updates,
but the follower will *not* send a STATUS message in that case.

This means that if status_req == OFF, then msg->reply should be 0 as well
since no reply is expected in that case.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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media: include/(uapi/)media: add SPDX license info

Replace the old license information with the corresponding SPDX
license for those headers that I authored.

Signed-off-by: Hans Verkuil <hans.verku

media: include/(uapi/)media: add SPDX license info

Replace the old license information with the corresponding SPDX
license for those headers that I authored.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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License cleanup: add SPDX license identifier to uapi header files with a license

Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shortha

License cleanup: add SPDX license identifier to uapi header files with a license

Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.

Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.

GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:

NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".

This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.

Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)

SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.

Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Philippe Ombredanne <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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media: cec-funcs.h: cec_ops_report_features: set *dev_features to NULL

gcc can get confused by this code and it thinks dev_features can be
returned uninitialized. So initialize to NULL at the beginn

media: cec-funcs.h: cec_ops_report_features: set *dev_features to NULL

gcc can get confused by this code and it thinks dev_features can be
returned uninitialized. So initialize to NULL at the beginning to shut up
the warning.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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[media] cec: fix report_current_latency

In the (very) small print of the REPORT_CURRENT_LATENCY message there is a
line that says that the last byte of the message (audio out delay) is only
present

[media] cec: fix report_current_latency

In the (very) small print of the REPORT_CURRENT_LATENCY message there is a
line that says that the last byte of the message (audio out delay) is only
present if the 'audio out compensated' value is 3.

I missed this, and so if this message was sent with a total length of 6 (i.e.
without the audio out delay byte), then it was rejected by the framework
since a minimum length of 7 was expected.

Fix this minimum length check and update the wrappers in cec-funcs.h to do
the right thing based on the message length.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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[media] cec.h/cec-funcs.h: don't use bool in public headers

Replace bool by int or __u8 (when used in a struct).

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho C

[media] cec.h/cec-funcs.h: don't use bool in public headers

Replace bool by int or __u8 (when used in a struct).

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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[media] cec: move the CEC framework out of staging and to media

The last open issues have been addressed, so it is time to move
this out of staging and into the mainline and to move the public
cec h

[media] cec: move the CEC framework out of staging and to media

The last open issues have been addressed, so it is time to move
this out of staging and into the mainline and to move the public
cec headers to include/uapi/linux.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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