Re: [PATCH 1/2] staging:fsl-mc: Move DPIO from staging to drivers/soc/fsl

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On 7/9/2018 6:37 AM, Laurentiu Tudor wrote:
> Hi Roy,
>
> Couple of comments inline.
>
> On 05.07.2018 22:41, Roy Pledge wrote:
>> Move the NXP DPIO (Datapath I/O Driver) out of the
>> drivers/staging directory and into the drivers/soc/fsl directory.
>>
>> The DPIO driver enables access to Queue and Buffer Manager (QBMAN)
>> hardware on NXP DPAA2 devices. This is a prerequisite to moving the
>> DPAA2 Ethernet driver out of staging.
>>
>> Signed-off-by: Roy Pledge <roy.pledge@xxxxxxx>
>> ---
>>   MAINTAINERS                                                    |  2 +-
>>   drivers/crypto/caam/sg_sw_qm2.h                                |  2 +-
>>   drivers/crypto/caam/sg_sw_sec4.h                               |  2 +-
>>   drivers/soc/fsl/Kconfig                                        | 10 ++++++++++
>>   drivers/soc/fsl/Makefile                                       |  1 +
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/Makefile          |  0
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-cmd.h        |  0
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-driver.c     |  2 +-
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-driver.txt   |  0
> Maybe this should be converted to .rst and go in the already existing
> Documentation/networking/dpaa2/?

I can look into converting this to RST but I'm not sure it belongs in
the networking documentation folder since
it will be used by other non networking drivers in the near future -
compress/decompress for example.
>
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-service.c    |  2 +-
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio.c            |  0
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio.h            |  0
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/qbman-portal.c    |  2 +-
>>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/qbman-portal.h    |  2 +-
>>   drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h                 |  4 ++--
>>   drivers/staging/fsl-mc/bus/Kconfig                             |  9 ---------
>>   drivers/staging/fsl-mc/bus/Makefile                            |  2 --
>>   {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-fd.h |  0
>>   .../staging/fsl-mc/include => include/soc/fsl}/dpaa2-global.h  |  0
>>   {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-io.h |  0
>>   20 files changed, 20 insertions(+), 20 deletions(-)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/Makefile (100%)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-cmd.h (100%)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-driver.c (99%)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-driver.txt (100%)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-service.c (99%)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio.c (100%)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio.h (100%)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/qbman-portal.c (99%)
>>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/qbman-portal.h (99%)
>>   rename {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-fd.h (100%)
>>   rename {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-global.h (100%)
>>   rename {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-io.h (100%)
> I received feedback in the past on mc-bus that a driver should limit to 
> only one public header and one private one. Would it make sense to do 
> the same for dpio too?
Looking at this the dpaa-2global.h file should probably be integrated
into the dpaa2-io.h file. 
The dpaaa2-fd.h can be used by devices that don't need to used DPIO -
the definition of a frame descriptor
isn't DPIO specific so I would argue it should be kept in a seperate file.
 
>
> ---
> Best Regards, Laurentiu


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