Instead of having one big file with lots of keytables, create one include
file for each IR keymap.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Especially when IR needs to do polling, it generates lots of wakeups per
second. This makes no sense, if the input event device is closed.

Adds a callback handler to the IR hardware driver, to allow registering
an open/close ops.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Some decoders and a lirc_dev interface may need some other operations to work.
For example: IR device register/unregister and ir_keydown events may need to
be tracked.

As some operations can occur in interrupt time, and a lock is needed to prevent
un-registering a decode while decoding a key, the lock needed to be convert
into a spin lock.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Instead of hardcoding the protocols into ir-core, add a register interface
for the IR protocol decoders, and convert ir-nec-decoder into a client of
ir-core.

With this approach, it is possible to dynamically load the needed IR protocols,
and to add a RAW IR interface module, registered as one IR raw protocol decoder.

This patch opens a way to register a lirc_dev interface to work as an userspace
IR protocol decoder.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

At raw_decode mode, the key is processed after the end of a timer. The
previous code resets the timer every time something is received at the IR
port. While this works fine with IR's that don't implement repeat, like
Avermedia RM-JX IR, it keeps waiting until keydown, on IR's that implement
NEC repeat command, like the Terratec yellow.

The solution is to change the behaviour to do the timeout after the first
received data.

The timeout is currently set to 15 ms, as it works fine with NEC protcocol.
It may need some adjustments to support other protocols and to better handle
spurious detections that may happen with some IR sensors.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Adds a method to pass IR raw pulse/code events into ir-core. This is
needed in order to support LIRC. It also helps to move common code
from the drivers into the core.

In order to allow testing, it implements a simple NEC protocol decoder
at ir-nec-decoder.c file. The logic is about the same used at saa7134
driver that handles Avermedia M135A and Encore FM53 boards.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Now, both driver and keytable names are exported to userspace. This
will help userspace to decide when a table need to be replaced
by another one.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Change the ir-sysfs approach to create irrcv0 as a device, instead of
using class_dev. Also, change the way input is registered, in order
to make its parent to be the irrcv device.

Due to this change, now the event device is created under
/sys/class/ir/irrcv class:

/sys/class/irrcv/irrcv0/
|-- current_protocol
|-- device -> ../../../1-3
|-- input9
|   |-- capabilities
|   |   |-- abs
...
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

When preparing the linux-next patches, I got those errors:

include/media/ir-core.h:29: warning: left shift count >= width of type
In file included from include/media/ir-common.h:29,
                 from drivers/media/video/ir-kbd-i2c.c:50:
drivers/media/video/ir-kbd-i2c.c: In function ‘ir_probe’:
drivers/media/video/ir-kbd-i2c.c:324: warning: left shift count >= width of type

Unfortunately, enum is 32 bits on i386. As we define IR_TYPE_OTHER as 1<<63,
it won't work on non 64 bits arch.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Adds an structure to ir_input_register to contain IR device characteristics,
like supported protocols and a callback to handle protocol event changes.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Add sysfs skeleton to export remote controller information via
/sys/class/irrcv.

For now, the code doesn't do much. It just exports an attribute that
is meant to  report and control the IR protocol used by the keytable.
However, the callbacks for this new attribute weren't set yet.

Also, it lacks symlinks to the used event interface.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Now, ir_input_free does more than just freeing the keytab. Better to
rename it as ir_input_unregister.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Move non-V4L specific stuff from ir-functions ir_input_init() into
a new function to register ir devices: ir_input_register().
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Split the ir-common into two separate modules:
	- ir-core: it is the IR-independent functions;
	- ir-common: has the common part used by V4L drivers.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>