From: Michael Lawnick <ml.lawnick-Mmb7MZpHnFY@public.gmane.org>
To: "linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Q: i2c-mux-pca954x.c : How to get deselect activated via device tree?
Date: Fri, 24 Oct 2014 13:25:36 +0200 [thread overview]
Message-ID: <544A3730.9080007@gmx.de> (raw)
Hi,
there is means to unselect I2C multiplexer pca954x after every transfer.
I've now run into situation where I need this feature: When two
multiplexers are on same bus and they host devices with same address.
I could not yet find out from documentation or sources how to get
deselect feature enabled:
i2c-mux-pca954x.c:pca954x_probe()
...
i2c_add_mux_adapter(adap, &client->dev, client,
force, num, class, pca954x_select_chan,
(pdata && pdata->modes[num].deselect_on_exit)
? pca954x_deselect_mux : NULL);
...
How to initialize pdata->modes[num].deselect_on_exit?
Some attribute in device tree should do the trick, shouldn't it?
Has anybody a useful hint?
--
KR
Michael
reply other threads:[~2014-10-24 11:25 UTC|newest]
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