[PATCH v2 5/8] drm/msm/dpu: Reject topologies for which no DSC blocks are available

[Dmitry Baryshkov]

On 22/12/2022 01:19, Marijn Suijten wrote:
> Resource allocation of DSC blocks should behave more like LMs and CTLs
> where NULL resources (based on initial hw_blk creation via definitions
> in the catalog) are skipped ^1.  The current hardcoded mapping of DSC
> blocks however means that resource allocation shouldn't succeed at all
> when the DSC block on the corresponding index doesn't exist, rather than
> searching for the next free block.
> 
> This hardcoded mapping should be loosened separately as DPU 5.0.0
> introduced a crossbar where DSC blocks can be "somewhat" freely bound to
> any PP and CTL (in proper pairs).
> 
> ^1: which, on hardware that supports DSC, can happen after a git rebase
> ended up moving additions to _dpu_cfg to a different struct which has
> the same patch context.
> 
> Fixes: f2803ee91a41 ("drm/msm/disp/dpu1: Add DSC support in RM")
> Signed-off-by: Marijn Suijten <marijn.suijten at somainline.org>
> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 5 +++++
>   1 file changed, 5 insertions(+)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>

-- 
With best wishes
Dmitry