Thread (5 messages) 5 messages, 3 authors, 2016-06-02

How to enable IIO driver in 3.18 kernel

From: Munagala Naresh <hidden>
Date: 2016-06-02 04:24:17

Thanks Daniel.

After creating devices using mknod, it is working on expected lines. After
reboot these devices are getting removed and I need to create them manually
every time.
Can you please suggest me the procedure to enable it programmatically ? I
tried adding CONFIG_DEVTMPFS=y and CONFIG_DEVTMPFS_MOUNT=y in the def
config, but no luck.

Thanks
Naresh

On Wed, Jun 1, 2016 at 8:11 PM, Daniel Baluta [off-list ref]
wrote:
On Wed, Jun 1, 2016 at 5:26 PM, Munagala Naresh
[off-list ref] wrote:
quoted
Thanks for the response.

From the "cat /proc/devices", I could see "iio" listed like this.

/ # cat /proc/devices
cat /proc/devices
Character devices:
  1 mem
  4 /dev/vc/0
  4 tty
  5 /dev/tty
  5 /dev/console
  5 /dev/ptmx
 ------
250 iio
251 pps
 -----

I could see few other deices @ /dev/xxxx. CONFIG_DEVTMPFS is not set in
the
quoted
def config. I will try it by adding "CONFIG_DEVTMPFS=y" and
"CONFIG_DEVTMPFS_MOUNT=y".
Please don't use top posting.

You can look into /sys/bus/iio/devices/iio:device0/dev and get the
MAJOR and MINOR,
then create the device node manually, using:

mknod /dev/iio:device0 c MAJOR MINOR

Not sure why are you mentioning /proc/devices here.

thanks,
Daniel.


-- 
Regards
Naresh Babu
09900139337
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