[Intel-gfx] [PATCH 03/10] drm/i915: Refactor CURBASE calculation

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

The remaining cursor base address calculations are spread
around into several different locations. Just pull it all
into one place.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 54 +++++++++++++++++++++---------------
 1 file changed, 32 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c3e064af3b43..b884c0d5bbb3 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9153,6 +9153,31 @@ static bool haswell_get_pipe_config(struct intel_crtc *crtc,
 	return active;
 }
 
+static u32 intel_cursor_base(struct intel_crtc *crtc,
+			     struct intel_plane *plane,
+			     const struct intel_plane_state *plane_state)
+{
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+	const struct drm_framebuffer *fb = plane_state->base.fb;
+	const struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+	u32 base;
+
+	if (INTEL_INFO(dev_priv)->cursor_needs_physical)
+		base = obj->phys_handle->busaddr;
+	else
+		base = intel_plane_ggtt_offset(plane_state);
+
+	crtc->cursor_addr = base;
+
+	/* ILK+ do this automagically */
+	if (HAS_GMCH_DISPLAY(dev_priv) &&
+	    plane_state->base.rotation & DRM_ROTATE_180)
+		base += (plane_state->base.crtc_h *
+			 plane_state->base.crtc_w - 1) * fb->format->cpp[0];
+
+	return base;
+}
+
 static void i845_update_cursor(struct drm_crtc *crtc, u32 base,
 			       const struct intel_plane_state *plane_state)
 {
@@ -9266,14 +9291,14 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base,
 
 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
+				     struct intel_plane *plane,
 				     const struct intel_plane_state *plane_state)
 {
 	struct drm_device *dev = crtc->dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	int pipe = intel_crtc->pipe;
-	u32 base = intel_crtc->cursor_addr;
-	u32 pos = 0;
+	u32 pos = 0, base = 0;
 
 	if (plane_state) {
 		int x = plane_state->base.crtc_x;
@@ -9291,12 +9316,9 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
 		}
 		pos |= y << CURSOR_Y_SHIFT;
 
-		/* ILK+ do this automagically */
-		if (HAS_GMCH_DISPLAY(dev_priv) &&
-		    plane_state->base.rotation & DRM_ROTATE_180) {
-			base += (plane_state->base.crtc_h *
-				 plane_state->base.crtc_w - 1) * 4;
-		}
+		base = intel_cursor_base(intel_crtc, plane, plane_state);
+	} else {
+		intel_crtc->cursor_addr = 0;
 	}
 
 	I915_WRITE(CURPOS(pipe), pos);
@@ -13716,8 +13738,7 @@ static void
 intel_disable_cursor_plane(struct intel_plane *plane,
 			   struct intel_crtc *crtc)
 {
-	crtc->cursor_addr = 0;
-	intel_crtc_update_cursor(&crtc->base, NULL);
+	intel_crtc_update_cursor(&crtc->base, plane, NULL);
 }
 
 static void
@@ -13725,20 +13746,9 @@ intel_update_cursor_plane(struct intel_plane *plane,
 			  const struct intel_crtc_state *crtc_state,
 			  const struct intel_plane_state *state)
 {
-	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
-	struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
-	uint32_t addr;
-
-	if (!obj)
-		addr = 0;
-	else if (!INTEL_INFO(dev_priv)->cursor_needs_physical)
-		addr = intel_plane_ggtt_offset(state);
-	else
-		addr = obj->phys_handle->busaddr;
 
-	crtc->cursor_addr = addr;
-	intel_crtc_update_cursor(&crtc->base, state);
+	intel_crtc_update_cursor(&crtc->base, plane, state);
 }
 
 static struct intel_plane *
-- 
2.10.2