drm/i915: Use drm_mode_get_hv_timing() to populate plane clip rectangle

Use drm_mode_get_hv_timing() to fill out the plane clip rectangle.
No functional changes since pipe_src_w/h are already filled via
drm_mode_get_hv_timing().

Once everyone agrees on this we can move the clip handling into
drm_atomic_helper_check_plane_state().

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171123190502.28449-3-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Thierry Reding <treding@nvidia.com>

drivers/gpu/drm/i915/intel_atomic_plane.c

@@ -129,14 +129,6 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_
 	if (!intel_state->base.crtc && !old_plane_state->base.crtc)
 		return 0;
 
-	/* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */
-	intel_state->clip.x1 = 0;
-	intel_state->clip.y1 = 0;
-	intel_state->clip.x2 =
-		crtc_state->base.enable ? crtc_state->pipe_src_w : 0;
-	intel_state->clip.y2 =
-		crtc_state->base.enable ? crtc_state->pipe_src_h : 0;
-
 	if (state->fb && drm_rotation_90_or_270(state->rotation)) {
 		struct drm_format_name_buf format_name;
 

drivers/gpu/drm/i915/intel_display.c

@@ -9317,13 +9317,18 @@ static int intel_check_cursor(struct intel_crtc_state *crtc_state,
 			      struct intel_plane_state *plane_state)
 {
 	const struct drm_framebuffer *fb = plane_state->base.fb;
+	struct drm_rect clip = {};
 	int src_x, src_y;
 	u32 offset;
 	int ret;
 
+	if (crtc_state->base.enable)
+		drm_mode_get_hv_timing(&crtc_state->base.mode,
+				       &clip.x2, &clip.y2);
+
 	ret = drm_atomic_helper_check_plane_state(&plane_state->base,
 						  &crtc_state->base,
-						  &plane_state->clip,
+						  &clip,
 						  DRM_PLANE_HELPER_NO_SCALING,
 						  DRM_PLANE_HELPER_NO_SCALING,
 						  true, true);
@@ -12752,6 +12757,7 @@ intel_check_primary_plane(struct intel_plane *plane,
 	int min_scale = DRM_PLANE_HELPER_NO_SCALING;
 	int max_scale = DRM_PLANE_HELPER_NO_SCALING;
 	bool can_position = false;
+	struct drm_rect clip = {};
 	int ret;
 
 	if (INTEL_GEN(dev_priv) >= 9) {
@@ -12763,9 +12769,13 @@ intel_check_primary_plane(struct intel_plane *plane,
 		can_position = true;
 	}
 
+	if (crtc_state->base.enable)
+		drm_mode_get_hv_timing(&crtc_state->base.mode,
+				       &clip.x2, &clip.y2);
+
 	ret = drm_atomic_helper_check_plane_state(&state->base,
 						  &crtc_state->base,
-						  &state->clip,
+						  &clip,
 						  min_scale, max_scale,
 						  can_position, true);
 	if (ret)

drivers/gpu/drm/i915/intel_drv.h

@@ -406,7 +406,6 @@ struct intel_atomic_state {
 
 struct intel_plane_state {
 	struct drm_plane_state base;
-	struct drm_rect clip;
 	struct i915_vma *vma;
 
 	struct {

drivers/gpu/drm/i915/intel_sprite.c

@@ -864,7 +864,7 @@ intel_check_sprite_plane(struct intel_plane *plane,
 	uint32_t src_x, src_y, src_w, src_h;
 	struct drm_rect *src = &state->base.src;
 	struct drm_rect *dst = &state->base.dst;
-	const struct drm_rect *clip = &state->clip;
+	struct drm_rect clip = {};
 	int hscale, vscale;
 	int max_scale, min_scale;
 	bool can_scale;
@@ -922,7 +922,11 @@ intel_check_sprite_plane(struct intel_plane *plane,
 	vscale = drm_rect_calc_vscale_relaxed(src, dst, min_scale, max_scale);
 	BUG_ON(vscale < 0);
 
-	state->base.visible = drm_rect_clip_scaled(src, dst, clip, hscale, vscale);
+	if (crtc_state->base.enable)
+		drm_mode_get_hv_timing(&crtc_state->base.mode,
+				       &clip.x2, &clip.y2);
+
+	state->base.visible = drm_rect_clip_scaled(src, dst, &clip, hscale, vscale);
 
 	crtc_x = dst->x1;
 	crtc_y = dst->y1;