Re: [PATCH 2/2] drm/i915: Do not advertize support for NV12 on ICL yet.

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Fri, Aug 24, 2018 at 01:38:56PM -0700, Dhinakaran Pandiyan wrote:
> ICL requires two planes for scanning out a NV12 framebuffer. Do
> not advertize support for creating NV12 framebuffers until required
> plane programming is implemented.
> 
> v2: Do not allow adding buffers.
>     Check inside skl_plane_has_planar (Ville)
> 
> Bspec: Plane Planar YUV programming (18566)
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

> ---
>  drivers/gpu/drm/i915/intel_display.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 7e18bd8b21b8..8e4e88eb10e4 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -13622,6 +13622,13 @@ static bool skl_plane_has_fbc(struct drm_i915_private *dev_priv,
>  bool skl_plane_has_planar(struct drm_i915_private *dev_priv,
>  			  enum pipe pipe, enum plane_id plane_id)
>  {
> +	/*
> +	 * FIXME: ICL requires two hardware planes for scanning out NV12
> +	 * framebuffers. Do not advertize support until this is implemented.
> +	 */
> +	if (INTEL_GEN(dev_priv) >= 11)
> +		return false;
> +
>  	if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
>  		return false;
>  
> @@ -14543,7 +14550,7 @@ static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
>  		break;
>  	case DRM_FORMAT_NV12:
>  		if (INTEL_GEN(dev_priv) < 9 || IS_SKYLAKE(dev_priv) ||
> -		    IS_BROXTON(dev_priv)) {
> +		    IS_BROXTON(dev_priv) || INTEL_GEN(dev_priv) >= 11) {
>  			DRM_DEBUG_KMS("unsupported pixel format: %s\n",
>  				      drm_get_format_name(mode_cmd->pixel_format,
>  							  &format_name));
> -- 
> 2.17.1

-- 
Ville Syrjälä
Intel
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