On Wed, Mar 07, 2018 at 04:53:12PM +0100, H. Nikolaus Schaller wrote:

If I look for example at the camera module drivers provided by
drivers/media/i2c, most of them could be easily power-controlled from
user-space by i2c-tools and 1-2 gpios through /sys/class/gpio and
a big set of scripts.

Still they have a place in the kernel and cameras are powered on
if the device is opened and powered down if it is closed.

So I am still trying to understand the rationale and logic (if one exists)
behind having them in kernel but rejecting our driver which does the
same for a different class of devices.

For media we have a framework in place; for gps we do not (yet).

Johan