[Intel-gfx] [PATCH 14/15] drm/i915: Add NV12 as supported format for sprite plane

[Srinivas, Vidya]

> -----Original Message-----
> From: Maarten Lankhorst [mailto:maarten.lankhorst at linux.intel.com]
> Sent: Monday, January 8, 2018 6:04 PM
> To: Srinivas, Vidya <vidya.srinivas at intel.com>; intel-
> gfx at lists.freedesktop.org
> Subject: Re: [Intel-gfx] [PATCH 14/15] drm/i915: Add NV12 as supported
> format for sprite plane
> 
> Op 07-01-18 om 10:59 schreef Vidya Srinivas:
> > From: Chandra Konduru <chandra.konduru at intel.com>
> >
> > This patch adds NV12 to list of supported formats for sprite plane.
> >
> > v2: Rebased (me)
> >
> > v3: Review comments by Ville addressed
> > - Removed skl_plane_formats_with_nv12 and added
> > NV12 case in existing skl_plane_formats
> > - Added the 10bpc RGB formats
> >
> > v4: Addressed review comments from Clinton A Taylor "Why are we
> adding
> > 10 bit RGB formats with the NV12 series patches?
> > Trying to set XR30 or AB30 results in error returned even though the
> > modes are advertised for the planes"
> > - Removed 10bit RGB formats added previously with NV12 series
> >
> > v5: Missed the Tested-by/Reviewed-by in the previous series Adding the
> > same to commit message in this version.
> > Addressed review comments from Clinton A Taylor "Why are we adding 10
> > bit RGB formats with the NV12 series patches?
> > Trying to set XR30 or AB30 results in error returned even though the
> > modes are advertised for the planes"
> > - Previous version has 10bit RGB format removed from VLV formats by
> > mistake. Fixing that in this version.
> > Removed 10bit RGB formats added previously with NV12 series for SKL.
> >
> > v6: Addressed review comments by Ville Restricting the NV12 to BXT and
> > PIPE A and B
> >
> > v7: Rebased (me)
> >
> > v8: Rebased (me)
> > Restricting NV12 changes to BXT and KBL Restricting NV12 changes for
> > plane 0 (overlay)
> >
> > v9: Rebased (me)
> >
> > Tested-by: Clinton Taylor <clinton.a.taylor at intel.com>
> > Reviewed-by: Clinton Taylor <clinton.a.taylor at intel.com>
> > Signed-off-by: Chandra Konduru <chandra.konduru at intel.com>
> > Signed-off-by: Nabendu Maiti <nabendu.bikash.maiti at intel.com>
> > Signed-off-by: Vidya Srinivas <vidya.srinivas at intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_sprite.c | 24 +++++++++++++++++++++---
> >  1 file changed, 21 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_sprite.c
> > b/drivers/gpu/drm/i915/intel_sprite.c
> > index 09732ae..1d35a18 100644
> > --- a/drivers/gpu/drm/i915/intel_sprite.c
> > +++ b/drivers/gpu/drm/i915/intel_sprite.c
> > @@ -1279,6 +1279,19 @@ static const struct drm_plane_funcs
> intel_sprite_plane_funcs = {
> >          .format_mod_supported =
> > intel_sprite_plane_format_mod_supported,
> >  };
> >
> > +static uint32_t nv12_plane_formats[] = {
> > +	DRM_FORMAT_RGB565,
> > +	DRM_FORMAT_ABGR8888,
> > +	DRM_FORMAT_ARGB8888,
> > +	DRM_FORMAT_XBGR8888,
> > +	DRM_FORMAT_XRGB8888,
> > +	DRM_FORMAT_YUYV,
> > +	DRM_FORMAT_YVYU,
> > +	DRM_FORMAT_UYVY,
> > +	DRM_FORMAT_VYUY,
> > +	DRM_FORMAT_NV12,
> > +};
> > +
> >  struct intel_plane *
> >  intel_sprite_plane_create(struct drm_i915_private *dev_priv,
> >  			  enum pipe pipe, int plane)
> > @@ -1323,9 +1336,14 @@ intel_sprite_plane_create(struct
> drm_i915_private *dev_priv,
> >  		intel_plane->update_plane = skl_update_plane;
> >  		intel_plane->disable_plane = skl_disable_plane;
> >  		intel_plane->get_hw_state = skl_plane_get_hw_state;
> > -
> > -		plane_formats = skl_plane_formats;
> > -		num_plane_formats = ARRAY_SIZE(skl_plane_formats);
> > +		if ((IS_BROXTON(dev_priv) || IS_KABYLAKE(dev_priv)) &&
> > +			(pipe == PIPE_A || pipe == PIPE_B) && plane == 0) {
> > +			plane_formats = nv12_plane_formats;
> > +			num_plane_formats =
> ARRAY_SIZE(nv12_plane_formats);
> > +		} else {
> > +			plane_formats = skl_plane_formats;
> > +			num_plane_formats =
> ARRAY_SIZE(skl_plane_formats);
> > +		}
> I understand we don't have enough scalers, but is there something wrong
> with allowing nv12 on any plane?
> 

On BXT (Gen9), NV12 is supported only on primary and sprite 0.

Regards
Vidya