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media: RC docs: add enum rc_proto description at the docs 

This is part of the uAPI. Add it to the documentation again,
and fix cross-references.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Sean Young <sean@mess.org>
This commit is contained in:
Mauro Carvalho Chehab 2017-11-30 08:00:45 -05:00
parent 57c642cb45
commit c6b73bfcea
3 changed files with 16 additions and 9 deletions
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19
Documentation/media/uapi/rc/lirc-dev-intro.rst
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@ -46,13 +46,13 @@ on the following table.
This mode is for both sending and receiving IR.
For transmitting (aka sending), create a ``struct lirc_scancode`` with
the desired scancode set in the ``scancode`` member, ``rc_proto`` set
the IR protocol, and all other members set to 0. Write this struct to
the desired scancode set in the ``scancode`` member, :c:type:`rc_proto`
set the IR protocol, and all other members set to 0. Write this struct to
the lirc device.
For receiving, you read ``struct lirc_scancode`` from the lirc device,
with ``scancode`` set to the received scancode and the IR protocol
``rc_proto``. If the scancode maps to a valid key code, this is set
:c:type:`rc_proto`. If the scancode maps to a valid key code, this is set
in the ``keycode`` field, else it is set to ``KEY_RESERVED``.
The ``flags`` can have ``LIRC_SCANCODE_FLAG_TOGGLE`` set if the toggle
@ -74,9 +74,6 @@ on the following table.
The ``timestamp`` field is filled with the time nanoseconds
(in ``CLOCK_MONOTONIC``) when the scancode was decoded.
An ``enum rc_proto`` in the :ref:`lirc_header` lists all the supported
IR protocols.
.. _lirc-mode-mode2:
``LIRC_MODE_MODE2``
@ -125,3 +122,13 @@ on the following table.
of entries.
This mode is used only for IR send.
**************************
Remote Controller protocol
**************************
An enum :c:type:`rc_proto` in the :ref:`lirc_header` lists all the
supported IR protocols:
.. kernel-doc:: include/uapi/linux/lirc.h

2
Documentation/media/uapi/rc/lirc-read.rst
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@ -54,7 +54,7 @@ read from the chardev.
Alternatively, :ref:`LIRC_MODE_SCANCODE <lirc-mode-scancode>` can be available,
in this mode scancodes which are either decoded by software decoders, or
by hardware decoders. The ``rc_proto`` member is set to the
by hardware decoders. The :c:type:`rc_proto` member is set to the
protocol used for transmission, and ``scancode`` to the decoded scancode,
and the ``keycode`` set to the keycode or ``KEY_RESERVED``.

4
Documentation/media/uapi/rc/lirc-write.rst
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@ -57,8 +57,8 @@ driver returns ``EINVAL``.
When in :ref:`LIRC_MODE_SCANCODE <lirc-mode-scancode>` mode, one
``struct lirc_scancode`` must be written to the chardev at a time, else
``EINVAL`` is returned. Set the desired scancode in the ``scancode`` member,
and the protocol in the ``rc_proto`` member. All other members must be set
to 0, else ``EINVAL`` is returned. If there is no protocol encoder
and the protocol in the :c:type:`rc_proto`: member. All other members must be
set to 0, else ``EINVAL`` is returned. If there is no protocol encoder
for the protocol or the scancode is not valid for the specified protocol,
``EINVAL`` is returned. The write function may not wait until the scancode
is transmitted.