A basic RTDM question:
In a normal Linux device driver you typically use request_mem_region()
and ioremap_nocache() to setup access to some memory mapped i/o. Then
you just iowrite()/ioread() to/from that address.
Do I still do this for the XXXXX_nrt operations in my RTDM driver?
How about for the XXXX_rt operations?
I do see that gpioirqbench uses the Linux memory management indirectly
since it relies on the OF mpc52xx_find_and_map("mpc5200-gpio") but
because the driver supports both Linux and RTDM, the requirements are
not clear.
Thanks.
--
Jeff Angielski
The PTR Group
www.theptrgroup.com
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