On Tue, Feb 10, 2015 at 11:12:57PM +0530, s.rawat wrote:

I am reading the HID sensor hub code on lxr??and found that there is no driver
code for hid custom sensor.Is this driver non existent.Hid custom sensor is a
custom sensor implemented in the device firmware.
I have a sensor device to which i can talk in windows using hid dlls ,I can
even read custom fields of a custom sensor of a device through windows apis.
I want to do the same in linux.I can read the accelerometer, gyroscope and
magnetometer data through a c application?in Linux.But I am unable to do so for
a custom sensors due to un-availability of the HID custom sensor driver.Does it
exist or exist by some other name?.

Have you looked in drivers/iio/common/hid-sensors?  There are also other
specific hid sensor drivers in drivers/iio/ for those specific chipsets
that are just a bit different from the specification.

Hope this helps,

greg k-h