Re: [PATCH 1/2] drm/komeda: Disable slave pipeline support

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On Fri, Jul 05, 2019 at 11:44:16AM +0000, james qian wang (Arm Technology China) wrote:
> Since the property slave_planes have been removed, to avoid the resource
> assignment problem in user disable slave pipeline support temporarily.
> 
> Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@xxxxxxx>

I guess the way you have to enumerate the planes listing the slave planes
wont just automatically work in any fashion and force a lot more fallbacks
to primary plane only. At least until virtualization of plane hw is done.
So makes sense to outright disable all the slave plane stuff for now. And
I think it's ok to keep all the code still, we'll use it again.

Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

> ---
>  drivers/gpu/drm/arm/display/komeda/komeda_crtc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
> index f4400788ab94..8ee879ee3ddc 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
> @@ -481,7 +481,7 @@ int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms,
>  		master = mdev->pipelines[i];
>  
>  		crtc->master = master;
> -		crtc->slave  = komeda_pipeline_get_slave(master);

This might cause an unused function warning, might need to annotate it
with __unused.
-Daniel
> +		crtc->slave  = NULL;
>  
>  		if (crtc->slave)
>  			sprintf(str, "pipe-%d", crtc->slave->id);
> -- 
> 2.20.1
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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