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| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-10-05 17:37:15 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-10-05 17:37:15 +0300 |
| commit | 5057f3262c52434fea9eda17494716b9649f25bd (patch) | |
| tree | b044d98b2731173680fb0ffc3eed2e4c7aa60631 /include/media/tuner-types.h | |
| parent | 65fc64090ed3dc750d40474b07a6f8ad734440cc (diff) | |
| download | linux-5057f3262c52434fea9eda17494716b9649f25bd.tar.xz | |
[media] DocBook: add documentation for tuner-types.h
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>
Diffstat (limited to 'include/media/tuner-types.h')
| -rw-r--r-- | include/media/tuner-types.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/media/tuner-types.h b/include/media/tuner-types.h index 011b4a20ee22..094e112cc325 100644 --- a/include/media/tuner-types.h +++ b/include/media/tuner-types.h @@ -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; |