Thread (228 messages) 228 messages, 14 authors, 2017-03-26

[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

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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