[media] V4L2: Mark the DV Preset API as deprecated

The DV Preset API will be phased out in favor of the more flexible DV Timings
API. Mark the preset API accordingly in the header and documentation.

Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

Documentation/DocBook/media/v4l/common.xml

···
 	</para>
 	</listitem>
 	<listitem>
-	<para>DV Presets: Digital Video (DV) presets. These are IDs representing a
+	<para>DV Presets: Digital Video (DV) presets (<emphasis role="bold">deprecated</emphasis>).
+	These are IDs representing a
 video timing at the input/output. Presets are pre-defined timings implemented
 by the hardware according to video standards. A __u32 data type is used to represent
 a preset unlike the bit mask that is used in &v4l2-std-id; allowing future extensions
-to support as many different presets as needed.</para>
+to support as many different presets as needed. This API is deprecated in favor of the DV Timings
+API.</para>
 	</listitem>
 	</itemizedlist>
 	<para>To enumerate and query the attributes of the DV timings supported by a device,

Documentation/DocBook/media/v4l/compat.xml

···
 <xref linkend="extended-controls" />.</para>
         </listitem>
         <listitem>
+	  <para>&VIDIOC-G-DV-PRESET;, &VIDIOC-S-DV-PRESET;, &VIDIOC-ENUM-DV-PRESETS; and
+	  &VIDIOC-QUERY-DV-PRESET; ioctls. Use the DV Timings API (<xref linkend="dv-timings" />).</para>
+        </listitem>
+        <listitem>
 	  <para><constant>VIDIOC_SUBDEV_G_CROP</constant> and
 	  <constant>VIDIOC_SUBDEV_S_CROP</constant> ioctls. Use
 	  <constant>VIDIOC_SUBDEV_G_SELECTION</constant> and

Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml

···
 
   <refsect1>
     <title>Description</title>
+
+    <para>These ioctls are <emphasis role="bold">deprecated</emphasis>.
+    New drivers and applications should use &VIDIOC-G-DV-TIMINGS; and &VIDIOC-S-DV-TIMINGS;
+    instead.
+    </para>
+
     <para>To query and select the current DV preset, applications
 use the <constant>VIDIOC_G_DV_PRESET</constant> and <constant>VIDIOC_S_DV_PRESET</constant>
 ioctls which take a pointer to a &v4l2-dv-preset; type as argument.

Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml

···
   <refsect1>
     <title>Description</title>
 
+    <para>This ioctl is <emphasis role="bold">deprecated</emphasis>.
+    New drivers and applications should use &VIDIOC-QUERY-DV-TIMINGS; instead.
+    </para>
+
     <para>The hardware may be able to detect the current DV preset
 automatically, similar to sensing the video standard. To do so, applications
 call <constant> VIDIOC_QUERY_DV_PRESET</constant> with a pointer to a

include/linux/videodev2.h

···
 	__u32		     reserved[4];
 };
 
+/* The DV Preset API is deprecated in favor of the DV Timings API.
+   New drivers shouldn't use this anymore! */
+
 /*
  *	V I D E O	T I M I N G S	D V	P R E S E T
  */
···
 #endif
 
 #define VIDIOC_S_HW_FREQ_SEEK	 _IOW('V', 82, struct v4l2_hw_freq_seek)
+
+/* These four DV Preset ioctls are deprecated in favor of the DV Timings
+   ioctls. */
 #define	VIDIOC_ENUM_DV_PRESETS	_IOWR('V', 83, struct v4l2_dv_enum_preset)
 #define	VIDIOC_S_DV_PRESET	_IOWR('V', 84, struct v4l2_dv_preset)
 #define	VIDIOC_G_DV_PRESET	_IOWR('V', 85, struct v4l2_dv_preset)