[Intel-gfx] [RFC v3 7/9] drm/i915: Skip rotated offset adjustment for unsupported modifiers

[Dhinakaran Pandiyan]

On Mon, 2019-09-23 at 03:29 -0700, Dhinakaran Pandiyan wrote:
> During framebuffer creation, we pre-compute offsets for 90/270 plane
> rotation. However, only Y and Yf modifiers support 90/270 rotation. So,
> skip the calculations for other modifiers.
> 
> Cc: Matt Roper <matthew.d.roper at intel.com>
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 7447001c1f85..6f0f38157697 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -2784,7 +2784,9 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
>  						      tile_size);
>  		offset /= tile_size;
>  
> -		if (!is_surface_linear(fb->modifier, i)) {
> +		/* Y or Yf modifiers required for 90/270 rotation */
> +		if (fb->modifier == I915_FORMAT_MOD_Y_TILED ||
> +		    fb->modifier == I915_FORMAT_MOD_Yf_TILED) {
This is wrong, as CI results clearly show igt at kms_addfb_basic@bo-too-small-due-to-tiling fails.
Please ignore this patch.

-DK

>  			unsigned int tile_width, tile_height;
>  			unsigned int pitch_tiles;
>  			struct drm_rect r;