Where to put board-specific drivers

Sean MacLennan smaclennan at pikatech.com
Fri Sep 3 07:16:11 EST 2010

On Thu, 2 Sep 2010 13:04:34 -0700
"Ira W. Snyder" <iws at ovro.caltech.edu> wrote:

> Hello all,
> I've written several drivers for a custom board. The board is
> basically an mpc8349_mds board with some extra FPGAs for data
> processing.
> All of the drivers were written to interface with a custom system
> controller FPGA, which handles things like LED control, FPGA
> programming, and fast data dumping from the data processing FPGAs.
> I'd like to start pushing some of these drivers into mainline, but I
> don't know where to put them. I don't think drivers/ is appropriate:
> these are highly board specific. Does arch/powerpc/ have a recommended
> place for board-specific drivers? I was thinking about
> arch/powerpc/drivers/, however that doesn't exist.

Drivers should go in the proper place if it all possible. For example,
for Pika's warp, the watchdog driver is in the watchdog directory
(drivers/watchdog/pika_wdt.c) even though it is FPGA based and very
specific to the warp.

However, the LEDS where put in arch/powerpc/platforms/44x/warp.c. So it
is in the platform code. I also put our FPGA based DTM (Dynamic Thermal
Management) in the warp.c file.

If you submit the code... the reviewers will make recommendations on
where it should go.



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