drm/i915: Store the normal view FB pitch in FB's intel_fb_view

Instead of special casing getting the pitch for the normal view, store
it during FB creation to the FB normal view struct and retrieve it from
there during atomic check, as it's done for the rotated view. A
follow-up patch does the same for a new FB remapped view.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210325214808.2071517-18-imre.deak@intel.com

drivers/gpu/drm/i915/display/intel_fb.c

@@ -484,12 +484,14 @@ static bool intel_plane_can_remap(const struct intel_plane_state *plane_state)
 	return true;
 }
 
-int intel_fb_pitch(const struct drm_framebuffer *fb, int color_plane, unsigned int rotation)
+int intel_fb_pitch(const struct drm_framebuffer *drm_fb, int color_plane, unsigned int rotation)
 {
+	struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
+
 	if (drm_rotation_90_or_270(rotation))
-		return to_intel_framebuffer(fb)->rotated_view.color_plane[color_plane].stride;
+		return fb->rotated_view.color_plane[color_plane].stride;
 	else
-		return fb->pitches[color_plane];
+		return fb->normal_view.color_plane[color_plane].stride;
 }
 
 static bool intel_plane_needs_remap(const struct intel_plane_state *plane_state)
@@ -744,6 +746,7 @@ int intel_fill_fb_info(struct drm_i915_private *i915, struct drm_framebuffer *fb
 		 */
 		intel_fb->normal_view.color_plane[i].x = x;
 		intel_fb->normal_view.color_plane[i].y = y;
+		intel_fb->normal_view.color_plane[i].stride = intel_fb->base.pitches[i];
 
 		offset = calc_plane_aligned_offset(intel_fb, i, &x, &y);