linux.git/include/media/cec.h, branch v4.20

media: cec: name for RC passthrough device does not need 'RC for'

2018-10-05T15:28:13+00:00

An RC device is does not need to be called 'RC for'. Simply the name
will suffice.

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

media: cec: fix the Signal Free Time calculation

2018-10-05T15:27:15+00:00

The calculation of the Signal Free Time in the framework was not
correct. If a message was received, then the next transmit should be
considered a New Initiator and use a shorter SFT value.

This was not done with the result that if both sides where continually
sending messages, they both could use the same SFT value and one side
could deny the other side access to the bus.

Note that this fix does not take the corner case into account where
a receive is in progress when you call adap_transmit.

Signed-off-by: Hans Verkuil 
Cc:       # for v4.18 and up
Signed-off-by: Mauro Carvalho Chehab

media: cec/v4l2: move V4L2 specific CEC functions to V4L2

2018-09-24T13:11:04+00:00

Several CEC functions are actually specific for use with receivers,
i.e. they should be part of the V4L2 subsystem, not CEC.

These functions deal with validating and modifying EDIDs for (HDMI)
receivers, and they do not actually have anything to do with the CEC
subsystem and whether or not CEC is enabled. The problem was that if
the CEC_CORE config option was not set, then these functions would
become stubs, but that's not right: they should always be valid.

So replace the cec_ prefix by v4l2_ and move them to v4l2-dv-timings.c.
Update all drivers that call these accordingly.

Signed-off-by: Hans Verkuil 
Reported-by: Lars-Peter Clausen 
Cc:       # for v4.17 and up
Signed-off-by: Mauro Carvalho Chehab

media: cec: make cec_get_edid_spa_location() an inline function

2018-09-24T13:09:07+00:00

This function is needed by both V4L2 and CEC, so move this to
cec.h as a static inline since there are no obvious shared
modules between the two subsystems.

This patch, together with the following ones, fixes a
dependency bug: if CEC_CORE is disabled, then building adv7604
(and other HDMI receivers) will fail because an essential
function is now stubbed out.

Signed-off-by: Hans Verkuil 
Cc:       # for v4.17 and up
Signed-off-by: Mauro Carvalho Chehab

media: cec: add support for 5V signal testing

2018-07-25T11:11:48+00:00

Add support for the new 5V CEC events

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: cec: improve CEC pin event handling

2018-03-22T12:16:52+00:00

It turns out that the struct cec_fh event buffer size of 64 events
(64 for CEC_EVENT_PIN_CEC_LOW and 64 for _HIGH) is too small. It's
about 160 ms worth of events and if the Raspberry Pi is busy, then it
might take too long for the application to be scheduled so that it can
drain the pending events. Increase these buffers to 800 events which
is at least 2 seconds worth of events.

There is also a FIFO in between the interrupt and the cec-pin thread.
The thread passes the events on to the CEC core. It is important that
should this FIFO fill up the cec core will be informed that events
have been lost so this can be communicated to the user by setting
CEC_EVENT_FL_DROPPED_EVENTS.

It is very hard to debug CEC problems if events were lost without
informing the user of that fact.

If events were dropped due to the FIFO filling up, then the debugfs
status file will let you know how many events were dropped.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: cec: add core error injection support

2018-03-22T11:59:31+00:00

Add two new ops (error_inj_show and error_inj_parse_line) to support
error injection functionality for CEC adapters. If both are present,
then the core will add a new error-inj debugfs file that can be used
to see the current error injection commands and to set error injection
commands.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

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

2018-02-14T18:23:51+00:00

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

Signed-off-by: Hans Verkuil 
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: cec: disable the hardware when unregistered

2017-12-08T16:11:25+00:00

When the device is being unregistered disable the hardware, don't wait
until cec_delete_adapter is called as the hardware may have disappeared by
then. This would be the case for hotplugable devices.

Signed-off-by: Hans Verkuil 
Reported-by: Bård Eirik Winther 
Tested-by: Bård Eirik Winther 
Signed-off-by: Mauro Carvalho Chehab