[PATCH v4 15/36] platform: add video-multiplexer subdevice driver

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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 181 bytes
Desc: Digital signature
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20170224/521fe700/attachment.sig>