drivers: iio: Adding channels to the simple_dummy module

Bharath Vedartham linux.bhar at
Tue Jan 22 13:03:18 EST 2019

Hey everyone,

I am trying to get started with the IIO subsystem by doing the following tasks:

In task 3, which requires us to add 3 channels to the dummy_device, I
have added the structures in the dummy_channels array(which is of type
struct chan_spec), similar to the other channels in the dummy_channels
array.(in file drivers/iio/dummy/iio_simple_dummy.c)

I also added elements to the enum iio_simple_dummy_scan_elements for the
scan_index val.(in iio_simple_dummy.h)

I recompiled the kernel and loaded the modules iio_dummy and
iio_dummy_evgen using modprobe.

is the right approach. I am not able to see any new channels being
added to my /sys/bus/iio/devices/iio:device0/ directory?

printk is not printing to dmesg. I put printk in the probe function

Thank you,

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