[PATCH 1/2] drm/msm/dpu: drop SSPP register dumpers

[Marijn Suijten]

On 2023-05-23 13:01:13, Abhinav Kumar wrote:
> 
> 
> On 5/21/2023 10:21 AM, Dmitry Baryshkov wrote:
> > Drop SSPP-specifig debugfs register dumps in favour of using
> > debugfs/dri/0/kms or devcoredump.
> > 
> 
> I did see another series which removes src_blk from the catalog (I am 
> yet to review that one) . Lets assume that one is fine and this change 
> will be going on top of that one right?

It replaces src_blk with directly accessing the blk (non-sub-block)
directly, because they were overlapping anyway.

> The concern I have with this change is that although I do agree that we 
> should be in favor of using debugfs/dri/0/kms ( i have used it a few 
> times and it works pretty well ), devcoredump does not have the support 
> to dump sub-blocks . Something which we should add with priority because 
> even with DSC blocks with the separation of enc/ctl blocks we need that 
> like I wrote in one of the responses.
> 
> So the "len" of the blocks having sub-blocks will be ignored in favor of 
> the len of the sub-blocks.

The sub-blocks are not always contiguous with their parent block, are
they?  It's probably better to print the sub-blocks separately with
clear headers anyway rather than dumping the range parent_blk_base to
max(parent_blk_base+len, parent_blk_base+sblk_base+sblk_len...).

- Marijn

> If we remove this without adding that support first, its a loss of debug 
> functionality.
> 
> Can we retain these blocks and remove dpu_debugfs_create_regset32 in a 
> different way?

<snip>