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[media] tvp5150: add HW input connectors support

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The tvp5150 decoder has different input connectors. The actual list of
HW inputs depends on the device version but all have at least these 3:

1) Composite0
2) Composite1
3) S-Video

and some variants have a 4th possible input connector:

4) Signal generator

The driver currently uses the .s_routing callback to switch the input
connector but since these are separate HW blocks, it's better to use
media entities to represent the input connectors and their source pads
linked with the decoder's sink pad.

This allows user-space to use the MEDIA_IOC_SETUP_LINK ioctl to choose
the input connector. For example using the media-ctl user-space tool:

$ media-ctl -r -l '"Composite0":0->"tvp5150 1-005c":0[1]'

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Javier Martinez Canillas
2016-02-05 17:09:58 -02:00
committed by Mauro Carvalho Chehab
parent 82c2ffeb21
commit f7b4b54e63
2 changed files with 152 additions and 0 deletions
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2
include/dt-bindings/media/tvp5150.h
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@@ -27,6 +27,8 @@
#define TVP5150_SVIDEO 2
#define TVP5150_GENERATOR 3
#define TVP5150_INPUT_NUM 4
/* TVP5150 HW outputs */
#define TVP5150_NORMAL 0
#define TVP5150_BLACK_SCREEN 1