[PATCH 06/10] drm/tinydrm: Move tinydrm_spi_transfer()

[Noralf Trønnes]

Den 17.07.2019 21.48, skrev David Lechner:
> On 7/17/19 6:58 AM, Noralf Trønnes wrote:
>> This is only used by mipi-dbi drivers so move it there.
>>
>> The reason this isn't moved to the SPI subsystem is that it will in a
>> later patch pass a dummy rx buffer for SPI controllers that need this.
>> Low memory boards (64MB) can run into a problem allocating such a "large"
>> contiguous buffer on every transfer after a long up time.
>> This leaves a very specific use case, so we'll keep the function here.
>> mipi-dbi will first go through a refactoring though, before this will
>> be done.
>>
>> Remove SPI todo entry now that we're done with the tinydrm.ko SPI code.
>>
>> Additionally move the mipi_dbi_spi_init() declaration to the other SPI
>> functions.
>>
>> Cc: David Lechner <david at lechnology.com>
>> Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
>> ---
> 
> Acked-by: : David Lechner <david at lechnology.com>
> 
> I assume that the comments here might have something to do with the
> issue[1] I raised a while back? Should I dust that patch off and resend
> it after this series lands?
> 
> [1]:
> https://lore.kernel.org/lkml/1519082461-32405-1-git-send-email-david@lechnology.com/
> 

Yep, that's the one. I want to refactor mipi-dbi first splitting struct
mipi_dbi into an interface and display pipeline part. The helper is
going to be moved to drivers/gpu/drm with the other helpers.
Please wait until that is done, I want to see what kind of coupling I
end up between the two structs and don't want another dependency to deal
with if I can avoid it.

Noralf.