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[media] DocBook: add documentation for tuner-types.h

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The tuner-types.h is part of the V4L2 core and should be
touched for every new tuner added. So, it deserves to be
documented at the device-drivers DocBook.

Add it to device-drivers.tmpl and add descriptions for
enum param_type and struct tuner_range.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2015-10-05 11:37:15 -03:00
parent 65fc64090e
commit 5057f3262c
2 changed files with 27 additions and 0 deletions
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1
Documentation/DocBook/device-drivers.tmpl
View File

@ -222,6 +222,7 @@ X!Isound/sound_firmware.c
<sect1><title>Video2Linux devices</title>
!Iinclude/media/tuner.h
!Iinclude/media/tuner-types.h
!Iinclude/media/v4l2-async.h
!Iinclude/media/v4l2-ctrls.h
!Iinclude/media/v4l2-dv-timings.h

26
include/media/tuner-types.h
View File

@ -5,6 +5,15 @@
#ifndef __TUNER_TYPES_H__
#define __TUNER_TYPES_H__
/**
* enum param_type - type of the tuner pameters
*
* @TUNER_PARAM_TYPE_RADIO: Tuner params are for FM and/or AM radio
* @TUNER_PARAM_TYPE_PAL: Tuner params are for PAL color TV standard
* @TUNER_PARAM_TYPE_SECAM: Tuner params are for SECAM color TV standard
* @TUNER_PARAM_TYPE_NTSC: Tuner params are for NTSC color TV standard
* @TUNER_PARAM_TYPE_DIGITAL: Tuner params are for digital TV
*/
enum param_type {
TUNER_PARAM_TYPE_RADIO,
TUNER_PARAM_TYPE_PAL,
@ -13,6 +22,23 @@ enum param_type {
TUNER_PARAM_TYPE_DIGITAL,
};
/**
* struct tuner_range - define the frequencies supported by the tuner
*
* @limit: Max frequency supported by that range, in 62.5 kHz
* (TV) or 62.5 Hz (Radio), as defined by
* V4L2_TUNER_CAP_LOW.
* @config: Value of the band switch byte (BB) to setup this mode.
* @cb: Value of the CB byte to setup this mode.
*
* Please notice that digital tuners like xc3028/xc4000/xc5000 don't use
* those ranges, as they're defined inside the driver. This is used by
* analog tuners that are compatible with the "Philips way" to setup the
* tuners. On those devices, the tuner set is done via 4 bytes:
* divider byte1 (DB1), divider byte 2 (DB2), Control byte (CB) and
* band switch byte (BB).
* Some tuners also have an additional optional Auxiliary byte (AB).
*/
struct tuner_range {
unsigned short limit;
unsigned char config;