[media] doc-dst: visually improve the CEC pages

Adjust the widths and show error codes as constants.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/uapi/cec/cec-func-close.rst

@@ -45,5 +45,5 @@ Return Value
 :c:func:`close()` returns 0 on success. On error, -1 is returned, and
 ``errno`` is set appropriately. Possible error codes are:
 
-EBADF
+``EBADF``
     ``fd`` is not a valid open file descriptor.

Documentation/media/uapi/cec/cec-func-open.rst

@@ -64,17 +64,17 @@ Return Value
 -1 is returned, and ``errno`` is set appropriately. Possible error codes
 include:
 
-EACCES
+``EACCES``
     The requested access to the file is not allowed.
 
-EMFILE
+``EMFILE``
     The process already has the maximum number of files open.
 
-ENFILE
+``ENFILE``
     The system limit on the total number of open files has been reached.
 
-ENOMEM
+``ENOMEM``
     Insufficient kernel memory was available.
 
-ENXIO
+``ENXIO``
     No device corresponding to this device special file exists.

Documentation/media/uapi/cec/cec-func-poll.rst

@@ -56,15 +56,15 @@ On success, :c:func:`poll()` returns the number structures which have
 non-zero ``revents`` fields, or zero if the call timed out. On error -1
 is returned, and the ``errno`` variable is set appropriately:
 
-EBADF
+``EBADF``
     One or more of the ``ufds`` members specify an invalid file
     descriptor.
 
-EFAULT
+``EFAULT``
     ``ufds`` references an inaccessible memory area.
 
-EINTR
+``EINTR``
     The call was interrupted by a signal.
 
-EINVAL
+``EINVAL``
     The ``nfds`` argument is greater than ``OPEN_MAX``.

Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst

@@ -45,7 +45,7 @@ returns the information to the application. The ioctl never fails.
 .. flat-table:: struct cec_caps
     :header-rows:  0
     :stub-columns: 0
-    :widths:       1 1 2
+    :widths:       1 1 16
 
 
     -  .. row 1
@@ -90,7 +90,7 @@ returns the information to the application. The ioctl never fails.
 .. flat-table:: CEC Capabilities Flags
     :header-rows:  0
     :stub-columns: 0
-    :widths:       3 1 4
+    :widths:       3 1 8
 
 
     -  .. _`CEC_CAP_PHYS_ADDR`:

Documentation/media/uapi/cec/cec-ioc-adap-g-log-addrs.rst

@@ -58,7 +58,7 @@ by a file handle in initiator mode (see
 .. flat-table:: struct cec_log_addrs
     :header-rows:  0
     :stub-columns: 0
-    :widths:       1 1 2
+    :widths:       1 1 16
 
 
     -  .. row 1
@@ -292,7 +292,7 @@ by a file handle in initiator mode (see
 .. flat-table:: CEC Logical Address Types
     :header-rows:  0
     :stub-columns: 0
-    :widths:       3 1 4
+    :widths:       3 1 16
 
 
     -  .. _`CEC_LOG_ADDR_TYPE_TV`:

Documentation/media/uapi/cec/cec-ioc-dqevent.rst

@@ -55,7 +55,7 @@ state did change in between the two events.
 .. flat-table:: struct cec_event_state_change
     :header-rows:  0
     :stub-columns: 0
-    :widths:       1 1 2
+    :widths:       1 1 8
 
 
     -  .. row 1
@@ -81,7 +81,7 @@ state did change in between the two events.
 .. flat-table:: struct cec_event_lost_msgs
     :header-rows:  0
     :stub-columns: 0
-    :widths:       1 1 2
+    :widths:       1 1 16
 
 
     -  .. row 1
@@ -107,7 +107,7 @@ state did change in between the two events.
 .. flat-table:: struct cec_event
     :header-rows:  0
     :stub-columns: 0
-    :widths:       1 1 2 1
+    :widths:       1 1 1 8
 
 
     -  .. row 1
@@ -176,7 +176,7 @@ state did change in between the two events.
 .. flat-table:: CEC Events Types
     :header-rows:  0
     :stub-columns: 0
-    :widths:       3 1 4
+    :widths:       3 1 16
 
 
     -  .. _CEC_EVENT_STATE_CHANGE:
@@ -205,7 +205,7 @@ state did change in between the two events.
 .. flat-table:: CEC Event Flags
     :header-rows:  0
     :stub-columns: 0
-    :widths:       3 1 4
+    :widths:       3 1 8
 
 
     -  .. _CEC_EVENT_FL_INITIAL_VALUE:

Documentation/media/uapi/cec/cec-ioc-g-mode.rst

@@ -79,7 +79,7 @@ Available initiator modes are:
 .. flat-table:: Initiator Modes
     :header-rows:  0
     :stub-columns: 0
-    :widths:       3 1 4
+    :widths:       3 1 16
 
 
     -  .. _`CEC_MODE_NO_INITIATOR`:
@@ -122,7 +122,7 @@ Available follower modes are:
 .. flat-table:: Follower Modes
     :header-rows:  0
     :stub-columns: 0
-    :widths:       3 1 4
+    :widths:       3 1 16
 
 
     -  .. _`CEC_MODE_NO_FOLLOWER`:
@@ -214,6 +214,7 @@ Core message processing details:
 .. flat-table:: Core Message Processing
     :header-rows:  0
     :stub-columns: 0
+    :widths: 1 8
 
 
     -  .. _`CEC_MSG_GET_CEC_VERSION`:

Documentation/media/uapi/cec/cec-ioc-receive.rst

@@ -57,7 +57,7 @@ queue, then it will return -1 and set errno to the EBUSY error code.
 .. flat-table:: struct cec_msg
     :header-rows:  0
     :stub-columns: 0
-    :widths:       1 1 2
+    :widths:       1 1 16
 
 
     -  .. row 1
@@ -214,7 +214,7 @@ queue, then it will return -1 and set errno to the EBUSY error code.
 .. flat-table:: CEC Transmit Status
     :header-rows:  0
     :stub-columns: 0
-    :widths:       3 1 4
+    :widths:       3 1 16
 
 
     -  .. _`CEC_TX_STATUS_OK`:
@@ -282,7 +282,7 @@ queue, then it will return -1 and set errno to the EBUSY error code.
 .. flat-table:: CEC Receive Status
     :header-rows:  0
     :stub-columns: 0
-    :widths:       3 1 4
+    :widths:       3 1 16
 
 
     -  .. _`CEC_RX_STATUS_OK`: