[Intel-gfx] [PATCH 7/9] drm/i915: split intel_primary_plane_setplane() into check() and commit()

[Gustavo Padovan]

From: Gustavo Padovan <gustavo.padovan at collabora.co.uk>

As a preparation for atomic updates we need to split the code to check
everything we are going to commit first. This patch starts the work to
split intel_primary_plane_setplane() into check() and commit() parts.

More work is expected on this to get a better split of the two steps.
Ideally the commit() step should never fail.

Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
---
 drivers/gpu/drm/i915/intel_display.c | 63 ++++++++++++++++++++++++++++--------
 1 file changed, 49 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 86c8fa3..42bd6c6 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11594,16 +11594,13 @@ disable_unpin:
 }
 
 static int
-intel_primary_plane_setplane(struct drm_plane *plane, struct drm_crtc *crtc,
-			     struct drm_framebuffer *fb, int crtc_x, int crtc_y,
-			     unsigned int crtc_w, unsigned int crtc_h,
-			     uint32_t src_x, uint32_t src_y,
-			     uint32_t src_w, uint32_t src_h)
+intel_check_primary_plane(struct drm_plane *plane, struct drm_crtc *crtc,
+			  struct drm_framebuffer *fb, int crtc_x, int crtc_y,
+			  unsigned int crtc_w, unsigned int crtc_h,
+			  uint32_t src_x, uint32_t src_y, uint32_t src_w,
+			  uint32_t src_h, bool *visible)
 {
-	struct drm_device *dev = crtc->dev;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
-	struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
 	struct drm_rect dest = {
 		/* integer pixels */
 		.x1 = crtc_x,
@@ -11623,17 +11620,33 @@ intel_primary_plane_setplane(struct drm_plane *plane, struct drm_crtc *crtc,
 		.x2 = intel_crtc->active ? intel_crtc->config.pipe_src_w : 0,
 		.y2 = intel_crtc->active ? intel_crtc->config.pipe_src_h : 0,
 	};
-	bool visible;
-	int ret;
 
-	ret = drm_plane_helper_check_update(plane, crtc, fb,
+	return drm_plane_helper_check_update(plane, crtc, fb,
 					    &src, &dest, &clip,
 					    DRM_PLANE_HELPER_NO_SCALING,
 					    DRM_PLANE_HELPER_NO_SCALING,
-					    false, true, &visible);
+					    false, true, visible);
+}
 
-	if (ret)
-		return ret;
+static int
+intel_commit_primary_plane(struct drm_plane *plane, struct drm_crtc *crtc,
+			   struct drm_framebuffer *fb, int crtc_x, int crtc_y,
+			   unsigned int crtc_w, unsigned int crtc_h,
+			   uint32_t src_x, uint32_t src_y, uint32_t src_w,
+			   uint32_t src_h, bool visible)
+{
+	struct drm_device *dev = crtc->dev;
+	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
+	struct drm_rect src = {
+		/* 16.16 fixed point */
+		.x1 = src_x,
+		.y1 = src_y,
+		.x2 = src_x + src_w,
+		.y2 = src_y + src_h,
+	};
+	int ret;
 
 	/*
 	 * If the CRTC isn't enabled, we're just pinning the framebuffer,
@@ -11710,6 +11723,28 @@ intel_primary_plane_setplane(struct drm_plane *plane, struct drm_crtc *crtc,
 	return 0;
 }
 
+static int
+intel_primary_plane_setplane(struct drm_plane *plane, struct drm_crtc *crtc,
+			     struct drm_framebuffer *fb, int crtc_x, int crtc_y,
+			     unsigned int crtc_w, unsigned int crtc_h,
+			     uint32_t src_x, uint32_t src_y,
+			     uint32_t src_w, uint32_t src_h)
+{
+	bool visible;
+	int ret;
+
+	ret = intel_check_primary_plane(plane, crtc, fb, crtc_x, crtc_y,
+					crtc_w, crtc_h, src_x, src_y,
+					src_w, src_h, &visible);
+	if (ret)
+		return ret;
+
+	intel_commit_primary_plane(plane, crtc, fb, crtc_x, crtc_y, crtc_w,
+				   crtc_h, src_x, src_y, src_w, src_h, visible);
+
+	return 0;
+}
+
 /* Common destruction function for both primary and cursor planes */
 static void intel_plane_destroy(struct drm_plane *plane)
 {
-- 
1.9.3