media: ca.h: get rid of CA_SET_PID

replace define CA_DSS :c:type:`ca_descr_info`

# some typedefs should point to struct/enums

replace typedef ca_pid_t :c:type:`ca_pid`

replace typedef ca_slot_info_t :c:type:`ca_slot_info`

replace typedef ca_descr_info_t :c:type:`ca_descr_info`

replace typedef ca_caps_t :c:type:`ca_caps`

#define CA_GET_MSG        _IOR('o', 132, ca_msg_t)

#define CA_SEND_MSG       _IOW('o', 133, ca_msg_t)

#define CA_SET_DESCR      _IOW('o', 134, ca_descr_t)

#define CA_SET_PID        _IOW('o', 135, ca_pid_t)

On querying the device, the device yields information thus:

.. -*- coding: utf-8; mode: rst -*-

.. _CA_SET_PID:

==========

CA_SET_PID

==========

Name

----

CA_SET_PID

Synopsis

--------

.. c:function:: int ioctl(fd, CA_SET_PID, struct ca_pid *pid)

    :name: CA_SET_PID

Arguments

---------

``fd``

  File descriptor returned by a previous call to :c:func:`open() <dvb-ca-open>`.

``pid``

  Pointer to struct :c:type:`ca_pid`.

.. c:type:: ca_pid

.. flat-table:: struct ca_pid

    :header-rows:  1

    :stub-columns: 0

    -

       - unsigned int

       - pid

       - Program ID

    -

       - int

       - index

       - PID index. Use -1 to disable.

Description

-----------

.. note:: This ioctl is undocumented. Documentation is welcome.

Return Value

------------

On success 0 is returned, on error -1 and the ``errno`` variable is set

appropriately. The generic error codes are described at the

:ref:`Generic Error Codes <gen-errors>` chapter.

	unsigned int parity;

	unsigned char cw[8];

    } ca_descr_t;

.. c:type:: ca_pid

ca-pid

======

.. code-block:: c

    typedef struct ca_pid {

	unsigned int pid;

	int index;      /* -1 == disable*/

    } ca_pid_t;

    ca-get-msg

    ca-send-msg

    ca-set-descr

    ca-set-pid