[PATCH v4 15/36] platform: add video-multiplexer subdevice driver
From: Pavel Machek <hidden>
Date: 2017-02-24 20:09:15
Also in:
linux-devicetree, linux-media, lkml
From: Pavel Machek <hidden>
Date: 2017-02-24 20:09:15
Also in:
linux-devicetree, linux-media, lkml
Hi!
quoted
Plus you might want to describe which port correspond to which gpio state/bitfield values...quoted
+struct vidsw {I knew it: it is secretely a switch! :-).This driver started as a two-input gpio controlled bus switch. I changed the name when adding support for bitfield controlled multiplexers with more than two inputs.
We had discussion with Sakari / Rob whether gpio controlled thing is a switch or a multiplexer :-).
quoted
quoted
+ if (!pad) { + /* Mirror the input side on the output side */ + cfg->type = vidsw->endpoint[vidsw->active].bus_type; + if (cfg->type == V4L2_MBUS_PARALLEL || + cfg->type == V4L2_MBUS_BT656) + cfg->flags = vidsw->endpoint[vidsw->active].bus.parallel.flags; + }Will this need support for other V4L2_MBUS_ values?To support CSI-2 multiplexers, yes.
Can you stick switch () { .... default: dev_err() } there, to help
future hackers?
Thank,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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