media: admin-guide: reorganize the guide

Separate the generic documentation from the driver-specific
parts, and use a better title for the documentation.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/admin-guide/media/dvb.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+==========
+Digital TV
+==========
+
+.. toctree::
+
+	dvb_intro
+	ci
+	faq
+	dvb_references

Documentation/admin-guide/media/index.rst

@@ -2,9 +2,9 @@
 
 .. include:: <isonum.txt>
 
-============================
-Media subsystem usage guides
-============================
+====================================
+Media subsystem admin and user guide
+====================================
 
 This section contains usage information about media subsystem and
 its supported drivers.
@@ -18,11 +18,8 @@ Please see:
      for driver development information and Kernel APIs used by
      media devices;
 
-.. _uapi-v4l-drivers:
-
-################################################
-Video4Linux (V4L)  driver-specific documentation
-################################################
+The media subsystem
+===================
 
 .. only:: html
 
@@ -37,9 +34,27 @@ Video4Linux (V4L)  driver-specific documentation
 	intro
 	building
 
+	remote-controller
+
+	dvb
+
 	cardlist
 
-	v4l-with-ir
+
+.. _uapi-v4l-drivers:
+
+Video4Linux (V4L) driver-specific documentation
+===============================================
+
+.. only:: html
+
+    .. class:: toc-title
+
+        Table of Contents
+
+.. toctree::
+	:maxdepth: 5
+	:numbered:
 
 	bttv
 	cafe_ccic
@@ -64,9 +79,8 @@ Video4Linux (V4L)  driver-specific documentation
 	vimc
 	vivid
 
-##############################################
-Linux Digital TV driver-specific documentation
-##############################################
+Digital TV driver-specific documentation
+========================================
 
 .. only:: html
 
@@ -78,11 +92,6 @@ Linux Digital TV driver-specific documentation
 	:maxdepth: 5
 	:numbered:
 
-	dvb_intro
-	ci
-	faq
-	dvb_references
-
 	avermedia
 	bt8xx
 	lmedm04
@@ -91,9 +100,8 @@ Linux Digital TV driver-specific documentation
 	ttusb-dec
 	zr364xx
 
-#################################
 CEC driver-specific documentation
-#################################
+=================================
 
 .. only:: html
 

Documentation/admin-guide/media/v4l-with-ir.rst → Documentation/admin-guide/media/remote-controller.rst

 .. SPDX-License-Identifier: GPL-2.0
 
+======================================================
 Infrared remote control support in video4linux drivers
 ======================================================
 
 Authors: Gerd Hoffmann, Mauro Carvalho Chehab
 
 Basics
-------
+======
 
 Most analog and digital TV boards support remote controllers. Several of
 them have a microprocessor that receives the IR carriers, convert into
@@ -33,7 +34,7 @@ detected. However, for a few devices, you need to manually load the
 ir-kbd-i2c module.
 
 How it works
-------------
+============
 
 The modules register the remote as keyboard within the linux input
 layer, i.e. you'll see the keys of the remote as normal key strokes
@@ -55,7 +56,7 @@ the keymaps, like the input kbd utility.
 
 
 Using with lircd
-================
+----------------
 
 The latest versions of the lircd daemon supports reading events from the
 linux input layer (via event device). It also supports receiving IR codes
@@ -63,7 +64,7 @@ in lirc mode.
 
 
 Using without lircd
-===================
+-------------------
 
 Xorg recognizes several IR keycodes that have its numerical value lower
 than 247. With the advent of Wayland, the input driver got updated too,