Re: [PATCH] drm/i915/tgl: Add Wa_1606054188;tgl

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On Fri, Jan 17, 2020 at 04:16:28AM -0500, Matt Atwood wrote:
> On Tiger Lake we do not support source keying in the pixel formats P010,
> P012, P016.
> 
> Bspec: 52890
> Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Signed-off-by: Matt Atwood <matthew.s.atwood@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/display/intel_sprite.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
> index fca77ec1e0dd..67176524e60f 100644
> --- a/drivers/gpu/drm/i915/display/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/display/intel_sprite.c
> @@ -2049,6 +2049,19 @@ static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
>  	unsigned int rotation = plane_state->hw.rotation;
>  	struct drm_format_name_buf format_name;
>  
> +	/* Wa_1606054188;tgl
> +	 *
> +	 * TODO: Add format RGB64i when implemented
> +	 *
> +	 */
> +	if (IS_GEN(dev_priv, 12) &&
> +	    (plane_state->ckey.flags & I915_SET_COLORKEY_SOURCE))
> +		if (fb->format->format & (DRM_FORMAT_P010 | DRM_FORMAT_P012
> +		    | DRM_FORMAT_P016)) {

if (a && b && c)

Needless parens.

Continuing | should go to the end. Also alignment is borked.

> +			DRM_DEBUG_KMS("GEN12 does not support source color key planes in formats P01x\n");

Feels a bit overly verbose:
"Source color keying not supported with P01x formats\n"

> +			return -EINVAL;
> +		}
> +
>  	if (!fb)
>  		return 0;

What Manasi said. In fact pls move the thing to the end of the function
because I have more color key checks queued up in a branch and IIRC
I put them to the very end of the function.

>  
> -- 
> 2.21.1
> 
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-- 
Ville Syrjälä
Intel
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