[PATCH v4 3/5] dmaengine: pxa: add pxa dmaengine driver
robert.jarzmik at free.fr
Tue May 26 23:15:00 PDT 2015
Paul Bolle <pebolle at tiscali.nl> writes:
> Vinod already applied this, so my remarks, if valid, should probably be
> handled in a follow up patch.
> (The series starting at https://lkml.org/lkml/2015/5/10/131 would allow
> to use builtin_platform_driver() for built-in only code.)
I won't be that way for forever, see next comment.
>> +MODULE_DESCRIPTION("Marvell PXA Peripheral DMA Driver");
>> +MODULE_AUTHOR("Robert Jarzmik <robert.jarzmik at free.fr>");
>> +MODULE_LICENSE("GPL v2");
> This patch added a bool Kconfig symbol. So pxa_dma.c will never be part
> of a module.
> Its code contains a few module specific macros. Was it actually intended for
> PXA_DMA to be tristate?
It is designed to be a module, and in the "end" it will be a module.
What is important to understand is the 3 phases which are going to happen :
- phase 1 : state after this is merged
pxa_dma must be builtin, for legacy support (see
- phase 2 : slowly, all the pxa drivers are converted to dmaengine
- phase 3 : after full conversion, the patch "add support for legacy
transition" is reverted.
There pxa_dma will become modular, and the tristate will appear.
In conclusion, it cannot be a module yet, but it will in the future.
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