> -----Original Message-----
> From: Maarten Lankhorst [mailto:[email protected]]
> Sent: Wednesday, May 2, 2018 2:29 PM
> To: Srinivas, Vidya <[email protected]>; Kristian Høgsberg
> <[email protected]>
> Cc: [email protected]
> Subject: Re: [Intel-gfx] [PATCH v5 0/6] Enable NV12 support
> 
> Hey,
> 
> Op 02-05-18 om 04:43 schreef Srinivas, Vidya:
> >
> >> -----Original Message-----
> >> From: Kristian Høgsberg [mailto:[email protected]]
> >> Sent: Monday, April 30, 2018 11:58 PM
> >> To: Srinivas, Vidya <[email protected]>
> >> Cc: [email protected]
> >> Subject: Re: [Intel-gfx] [PATCH v5 0/6] Enable NV12 support
> >>
> >> On Thu, Apr 19, 2018 at 3:34 AM Vidya Srinivas
> >> <[email protected]>
> >> wrote:
> >>
> >>> Enabling NV12 support:
> >>> - Framebuffer creation
> >>> - Primary and Sprite plane support
> >>> Patch series depend on Enable display workaround 827 patch mentioned
> >>> below submitted by Maarten
> >> How are we looking on being able to land these last NV12 patches?
> > I think Maarten is working on this series related
> > https://patchwork.freedesktop.org/series/42476/
> > I guess all would go in together?
> 
> I did some testing and with just the nv12 series and my series I don't hit
> underruns.

Thank you so much. I applied your series 
https://patchwork.freedesktop.org/series/42476/
And then applied the NV12 series https://patchwork.freedesktop.org/series/41674/
Somehow, I see that patch 6 doesn’t show the updated contents you have 
submitted under https://patchwork.freedesktop.org/patch/219915/
Not sure if only I don’t see the change (series show updated may 2nd but rev 3 
contents are not reflecting in patch 6)

But, I manually made the changes you mentioned and I too did not see any 
underruns on GLK.
Couldn’t run the set on APL as we now have BXT removed.

Regards
Vidya

> I made the following changes to your series on top of mine:
> 
> skl_update_scaler check removed, was done in patch 6 instead.
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index ad13c797e946..0a651f26f827 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4861,8 +4861,7 @@ skl_update_scaler(struct intel_crtc_state
> *crtc_state, bool force_detach,
>       }
> 
>       if (plane_scaler_check && pixel_format == DRM_FORMAT_NV12 &&
> -         (src_h < SKL_MIN_YUV_420_SRC_H || (src_w % 4) != 0 ||
> -          (src_h % 4) != 0)) {
> +         (src_h < SKL_MIN_YUV_420_SRC_H || src_w <
> SKL_MIN_YUV_420_SRC_W))
> +{
>               DRM_DEBUG_KMS("NV12: src dimensions not met\n");
>               return -EINVAL;
>       }
> 
> And fixup sprite format.
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c
> b/drivers/gpu/drm/i915/intel_sprite.c
> index dcba946af2ff..573ef6932633 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -1011,6 +1011,7 @@ intel_check_sprite_plane(struct intel_plane
> *plane,
>               src->y2 = (src_y + src_h) << 16;
> 
>               if (intel_format_is_yuv(fb->format->format) &&
> +                 fb->format->format != DRM_FORMAT_NV12 &&
>                   (src_x % 2 || src_w % 2)) {
>                       DRM_DEBUG_KMS("src x/w (%u, %u) must be a
> multiple of 2 for YUV planes\n",
>                                     src_x, src_w);

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