Hi, i want to write a gadget driver for the AT91RM9200. I started with the skeleton udc driver skel_udc.c . What is similar to struct device (which only seems to exist in kernel 2.5 and higher) in kernel 2.4.26 ?
There is no analogue of "struct device" in older kernels; it's part of the driver model work. You don't need the driver model to support 2.4 though ... see what the other controller drivers do instead. (I usually suggest goku_udc as the simplest driver to study, for someone starting out.)
Note that the "gadget driver" is the hardware-neutral driver that goes on top of the controller driver, and gives the system some sort of functionality like "printer" or "network link".
Is it right that i do not need request_mem_region when the udc-controller registers are statically ioremapped ?
The region is requested mostly to make sure that two different drivers don't try to "own" the hardware at the same time; so you should always do that.
- Dave
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