[Intel-gfx] [PATCH] drm/i915/skl+: Add YUV pixel format in Capability list

[Daniel Vetter]

On Tue, Jul 14, 2015 at 06:08:06PM +0530, Kumar, Mahesh wrote:
> GEN >= 9 supports YUV format for all planes, but it's not exported in
> Capability list of primary plane. Add YUV formats in skl_primary_formats
> list.
> Don't rely on fb->bits_per_pixel as intel_framebuffer_init is not
> filling bits_per_pixel field of fb-struct for YUV pixel format.
> This leads to divide by zero error during watermark calculation.
> 
> Signed-off-by: Kumar, Mahesh <mahesh1.kumar at intel.com>
> Cc: Konduru, Chandra <chandra.konduru at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 4 ++++
>  drivers/gpu/drm/i915/intel_pm.c      | 4 ++--
>  2 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index bb58cb6..f4b27af 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -72,6 +72,10 @@ static const uint32_t skl_primary_formats[] = {
>  	DRM_FORMAT_ABGR8888,
>  	DRM_FORMAT_XRGB2101010,
>  	DRM_FORMAT_XBGR2101010,
> +	DRM_FORMAT_YUYV,
> +	DRM_FORMAT_YVYU,
> +	DRM_FORMAT_UYVY,
> +	DRM_FORMAT_VYUY,

Needs testcase (or reworking an existing testcase to also test the primary
plane). Also we should really aim to unify all the skl plane functions ...
-Daniel

>  };
>  
>  /* Cursor formats */
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index f2be1ce..1d13b7e 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -3156,8 +3156,8 @@ static void skl_compute_wm_pipe_parameters(struct drm_crtc *crtc,
>  		/* For planar: Bpp is for uv plane, y_Bpp is for y plane */
>  		if (fb) {
>  			p->plane[0].enabled = true;
> -			p->plane[0].bytes_per_pixel = fb->pixel_format == DRM_FORMAT_NV12 ?
> -				drm_format_plane_cpp(fb->pixel_format, 1) : fb->bits_per_pixel / 8;
> +			p->plane[0].bytes_per_pixel =
> +				drm_format_plane_cpp(fb->pixel_format, 1);
>  			p->plane[0].y_bytes_per_pixel = fb->pixel_format == DRM_FORMAT_NV12 ?
>  				drm_format_plane_cpp(fb->pixel_format, 0) : 0;
>  			p->plane[0].tiling = fb->modifier[0];
> -- 
> 1.9.1
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch