* Q: i2c-mux-pca954x.c : How to get deselect activated via device tree?
@ 2014-10-24 11:25 Michael Lawnick
0 siblings, 0 replies; only message in thread
From: Michael Lawnick @ 2014-10-24 11:25 UTC (permalink / raw)
To: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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
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2014-10-24 11:25 Q: i2c-mux-pca954x.c : How to get deselect activated via device tree? Michael Lawnick
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