Messages in this thread | | | Date | Thu, 31 May 2012 20:04:11 +0800 | From | Greg KH <> | Subject | Re: [PATCH] add new NRP power meter USB device driver |
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On Thu, May 31, 2012 at 12:17:11PM +0200, Oliver Neukum wrote: > Am Donnerstag, 31. Mai 2012, 11:53:04 schrieb Greg KH: > > > So it is a chicken and egg problem. A lot of software is now out with > > > depends on this driver and a lot of embedded development environments > > > doesn't provide libudev, libsysfs und libusb. It will also increase the > > > size of the image and adds additional dependencies to the application. > > > > You don't need any of those libraries to do this. What's wrong with > > using "raw" usbfs interactions? > > SPI is not limited to USB. If we can get a unified subsystem then the > drivers need to be in kernel space, as some hardware does not allow > a solution in user space.
Ok, now that is a valid reason for a kernel driver.
But, I think it should use the IIO interface, as that should handle these types of devices.
thanks,
greg k-h
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