* Re: [PATCH v5 1/3] ARM: add CPPI 4.1 DMA support [not found] <201005152214.53993.sshtylyov@ru.mvista.com> @ 2010-09-28 9:13 ` Linus Walleij 2010-09-28 10:13 ` Sergei Shtylyov 0 siblings, 1 reply; 2+ messages in thread From: Linus Walleij @ 2010-09-28 9:13 UTC (permalink / raw) To: Sergei Shtylyov Cc: linux-arm-kernel, davinci-linux-open-source, khilman, linux, linux kernel, Dan Williams 2010/5/15 Sergei Shtylyov <sshtylyov@ru.mvista.com>: > Add support for Texas Instuments Communication Port Programming Interface 4.1 > (CPPI 4.1) used on OMAP-L1x/DA8xx and AM35x. Sorry for late feedback ... > +++ linux-davinci/arch/arm/common/cppi41.c Can you migrate this driver to drivers/dma/cppi41.c and use the DMAengine interface like so many DMA drivers we have created recently, or is there some very special characteristics about this DMA controller meriting it to be placed in arch/arm/*? Note: we have the support for PL08x found in ARM reference designs queued for drivers/dma/amba-pl08x.c, not arch/arm/common/*. The rationale about this is to lower the churn in arch/arm/* and put drivers into the proper subsystems, and in this case there is an appropriate subsystem to be used. Yours, Linus Walleij ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH v5 1/3] ARM: add CPPI 4.1 DMA support 2010-09-28 9:13 ` [PATCH v5 1/3] ARM: add CPPI 4.1 DMA support Linus Walleij @ 2010-09-28 10:13 ` Sergei Shtylyov 0 siblings, 0 replies; 2+ messages in thread From: Sergei Shtylyov @ 2010-09-28 10:13 UTC (permalink / raw) To: Linus Walleij Cc: Sergei Shtylyov, linux-arm-kernel, davinci-linux-open-source, khilman, linux, linux kernel, Dan Williams Hello. On 28-09-2010 13:13, Linus Walleij wrote: >> Add support for Texas Instuments Communication Port Programming Interface 4.1 >> (CPPI 4.1) used on OMAP-L1x/DA8xx and AM35x. > Sorry for late feedback ... >> +++ linux-davinci/arch/arm/common/cppi41.c > Can you migrate this driver to drivers/dma/cppi41.c and use the > DMAengine interface like so many DMA drivers we have created > recently, or is there some very special characteristics about this > DMA controller meriting it to be placed in arch/arm/*? I have once studied the possibility of doing this driver under drivers/dma/, and found that hardly achievable. Maybe I should try again though... > Yours, > Linus Walleij WBR, Sergei ^ permalink raw reply [flat|nested] 2+ messages in thread
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2010-09-28 9:13 ` [PATCH v5 1/3] ARM: add CPPI 4.1 DMA support Linus Walleij
2010-09-28 10:13 ` Sergei Shtylyov
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