[PATCH 2/8] ARM: zynq: move ttc timer code to drivers/clocksource
Rob Herring
robherring2 at gmail.com
Mon Nov 5 09:49:12 EST 2012
On 11/05/2012 05:22 AM, Michal Simek wrote:
> 2012/10/29 Josh Cartwright <josh.cartwright at ni.com>:
>> Suggested cleanup by Arnd Bergmann. Move the ttc timer.c code to
>> drivers/clocksource, and out of the mach-zynq directory.
>>
>> The common.h (which only held the timer declaration) was renamed to
>> xilinx_ttc.h and moved into include/linux.
>>
>> Signed-off-by: Josh Cartwright <josh.cartwright at ni.com>
>> Cc: Arnd Bergmann <arnd at arndb.de>
>> ---
>> arch/arm/mach-zynq/Makefile | 2 +-
>> arch/arm/mach-zynq/common.c | 2 +-
>> drivers/clocksource/Makefile | 1 +
>> arch/arm/mach-zynq/timer.c => drivers/clocksource/xilinx_ttc.c | 1 -
>> arch/arm/mach-zynq/common.h => include/linux/xilinx_ttc.h | 4 ++--
>> 5 files changed, 5 insertions(+), 5 deletions(-)
>> rename arch/arm/mach-zynq/timer.c => drivers/clocksource/xilinx_ttc.c (99%)
>> rename arch/arm/mach-zynq/common.h => include/linux/xilinx_ttc.h (91%)
>
> Not going to apply this patch till there is clean way how to move all
> drivers there.
> Especially I don't like to add xilinx_ttc.h to include/linux folder.
>
A cleaner way is how we are doing irqchips [1]. This needs a single
function (or one each for clksrc and clkevt) that has a DT match list of
all known timers and calls their init function. It should be a bit
simpler than irqchips init function because you don't need to worry
about hierarchy init ordering. That doesn't solve non-DT though and if
there are any extra functions like we have with irqchips, you still need
the header in include/linux.
Rob
[1] http://www.spinics.net/lists/arm-kernel/msg203687.html
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