[PATCH v4 4/4] drm: allow to use mmuless SoC

[Benjamin Gaignard]

2016-12-07 11:27 GMT+01:00 Daniel Vetter <daniel at ffwll.ch>:
> On Wed, Dec 07, 2016 at 11:06:51AM +0100, Benjamin Gaignard wrote:
>> Some SoC without MMU have display driver where a drm/kms driver
>> could be implemented.
>>
>> Before doing such kind of thing drm/kms must allow to use mmuless devices.
>> This patch propose to remove MMU configuration flag and add a cma helper
>> function to help implementing mmuless display driver
>>
>> version 4:
>> - add documentation about drm_gem_cma_get_unmapped_area()
>> - stub it MMU case
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard at linaro.org>
>
> Shouldn't we also update DRM_FB_HELPER_DEFAULT_OPS? With that addressed
> this all looks good to me.

Those changes shouldn't impact fb_ops but only fbdev file_operations
like it is done in fbmem patch

> -Daniel
>
[snip]