diff options
| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-01-27 08:39:33 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-02-01 07:19:08 -0200 |
| commit | 163c9bca101caf000691b56fb3834905e62cbba3 (patch) | |
| tree | 40fba51af616ce39fdaeb923164e6a5a9878c18e /include/media | |
| parent | 8dfbcc4351a0b6d2f2d77f367552f48ffefafe18 (diff) | |
[media] tuner.h: rename TUNER_PAD_IF_OUTPUT to TUNER_PAD_OUTPUT
The output of a tuner is not only IF frequencies. They may also
output audio on some of its pins, and may even be a zero-IF tuner,
with outputs a baseband. So, rename the PAD name to make it
clearer and add a proper documentation about that at tuner.h.
No functional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/tuner.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/include/media/tuner.h b/include/media/tuner.h index e5321fda5489..c5994fe865a0 100644 --- a/include/media/tuner.h +++ b/include/media/tuner.h @@ -21,11 +21,26 @@ #include <linux/videodev2.h> -/* Tuner PADs */ -/* FIXME: is this the right place for it? */ +/** + * enum tuner_pad_index - tuner pad index + * + * @TUNER_PAD_RF_INPUT: Radiofrequency (RF) sink pad, usually linked to a + * RF connector entity. + * @TUNER_PAD_OUTPUT: Tuner output pad. This is actually more complex than + * a single pad output, as, in addition to luminance and + * chrominance IF a tuner may have internally an + * audio decoder (like xc3028) or it may produce an audio + * IF that will be used by an audio decoder like msp34xx. + * It may also have an IF-PLL demodulator on it, like + * tuners with tda9887. Yet, currently, we don't need to + * represent all the dirty details, as this is transparent + * for the V4L2 API usage. So, let's represent all kinds + * of different outputs as a single source pad. + * @TUNER_NUM_PADS: Number of pads of the tuner. + */ enum tuner_pad_index { TUNER_PAD_RF_INPUT, - TUNER_PAD_IF_OUTPUT, + TUNER_PAD_OUTPUT, TUNER_NUM_PADS }; |