[Intel-gfx] [PATCH v2 5/6] RFC/WIP: drm/i915/display/psr: Consider tiling when doing the plane offset calculation

[Mun, Gwan-gyeong]

It works properly on a normal rgba plane.
In order to apply this patch, the commit messaged need to be polished.

Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
Tested-by: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>

On Tue, 2020-10-27 at 16:45 -0700, José Roberto de Souza wrote:
> Do the calculation of x and y offsets using
> skl_calc_main_surface_offset().
> 
> RFC/WIP: This causes the value of the calculated x to be different
> than
> plane_state->color_plane[color_plane].x, not sure if that is
> expected.
> 
> Cc: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_psr.c | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index 96ee51484dd6..00c76ea82f92 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -1188,7 +1188,8 @@ void intel_psr2_program_plane_sel_fetch(struct
> intel_plane *plane,
>  	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
>  	enum pipe pipe = plane->pipe;
>  	const struct drm_rect *clip;
> -	u32 val;
> +	u32 val, offset;
> +	int ret, x, y;
>  
>  	if (!crtc_state->enable_psr2_sel_fetch)
>  		return;
> @@ -1205,9 +1206,14 @@ void intel_psr2_program_plane_sel_fetch(struct
> intel_plane *plane,
>  	val |= plane_state->uapi.dst.x1;
>  	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_POS(pipe, plane-
> >id), val);
>  
> -	/* TODO: consider tiling and auxiliary surfaces */
> -	val = (clip->y1 + plane_state->color_plane[color_plane].y) <<
> 16;
> -	val |= plane_state->color_plane[color_plane].x;
> +	/* TODO: consider auxiliary surfaces */
> +	x = plane_state->uapi.src.x1 >> 16;
> +	y = (plane_state->uapi.src.y1 >> 16) + clip->y1;
> +	ret = skl_calc_main_surface_offset(plane_state, &x, &y,
> &offset);
> +	if (ret)
> +		drm_warn_once(&dev_priv->drm,
> "skl_calc_main_surface_offset() returned %i\n",
> +			      ret);
> +	val = y << 16 | x;
>  	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_OFFSET(pipe, plane-
> >id),
>  			  val);
>