drm/i915: Refactor CURPOS calculation

Move the CURPOS calculations to seprate function. This will allow
sharing the code between the 845/865 vs. others codepaths when we
otherwise split them apart.

v2: Don't pass intel_plane as it's not needed

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170327185546.2977-6-ville.syrjala@linux.intel.com

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bbc2022..3c310d9 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9157,6 +9157,27 @@ static u32 intel_cursor_base(const struct intel_plane_state *plane_state)
        return base;
 }
 
+static u32 intel_cursor_position(const struct intel_plane_state *plane_state)
+{
+       int x = plane_state->base.crtc_x;
+       int y = plane_state->base.crtc_y;
+       u32 pos = 0;
+
+       if (x < 0) {
+               pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
+               x = -x;
+       }
+       pos |= x << CURSOR_X_SHIFT;
+
+       if (y < 0) {
+               pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
+               y = -y;
+       }
+       pos |= y << CURSOR_Y_SHIFT;
+
+       return pos;
+}
+
 static u32 i845_cursor_ctl(const struct intel_crtc_state *crtc_state,
                           const struct intel_plane_state *plane_state)
 {
@@ -9294,22 +9315,8 @@ static void intel_crtc_update_cursor(struct intel_plane *plane,
        unsigned long irqflags;
 
        if (plane_state) {
-               int x = plane_state->base.crtc_x;
-               int y = plane_state->base.crtc_y;
-
-               if (x < 0) {
-                       pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
-                       x = -x;
-               }
-               pos |= x << CURSOR_X_SHIFT;
-
-               if (y < 0) {
-                       pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
-                       y = -y;
-               }
-               pos |= y << CURSOR_Y_SHIFT;
-
                base = intel_cursor_base(plane_state);
+               pos = intel_cursor_position(plane_state);
        }
 
        spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);