drm/i915: Clean up rotation DSPCNTR/DVSCNTR/etc. setup

Move the plane control register rotation setup away from the
coordinate munging code. This will result in neater looking
code once we add reflection support for CHV.

v2: Drop the BIT(), drop some usless parens,

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479142440-25283-3-git-send-email-ville.syrjala@linux.intel.com

drivers/gpu/drm/i915/intel_display.c

@@ -3075,6 +3075,9 @@ static void i9xx_update_primary_plane(struct drm_plane *primary,
 	    fb->modifier[0] == I915_FORMAT_MOD_X_TILED)
 		dspcntr |= DISPPLANE_TILED;
 
+	if (rotation & DRM_ROTATE_180)
+		dspcntr |= DISPPLANE_ROTATE_180;
+
 	if (IS_G4X(dev_priv))
 		dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
 
@@ -3085,10 +3088,8 @@ static void i9xx_update_primary_plane(struct drm_plane *primary,
 			intel_compute_tile_offset(&x, &y, plane_state, 0);
 
 	if (rotation & DRM_ROTATE_180) {
-		dspcntr |= DISPPLANE_ROTATE_180;
-
-		x += (crtc_state->pipe_src_w - 1);
-		y += (crtc_state->pipe_src_h - 1);
+		x += crtc_state->pipe_src_w - 1;
+		y += crtc_state->pipe_src_h - 1;
 	}
 
 	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
@@ -3180,6 +3181,9 @@ static void ironlake_update_primary_plane(struct drm_plane *primary,
 	if (fb->modifier[0] == I915_FORMAT_MOD_X_TILED)
 		dspcntr |= DISPPLANE_TILED;
 
+	if (rotation & DRM_ROTATE_180)
+		dspcntr |= DISPPLANE_ROTATE_180;
+
 	if (!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv))
 		dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
 
@@ -3188,13 +3192,11 @@ static void ironlake_update_primary_plane(struct drm_plane *primary,
 	intel_crtc->dspaddr_offset =
 		intel_compute_tile_offset(&x, &y, plane_state, 0);
 
-	if (rotation & DRM_ROTATE_180) {
-		dspcntr |= DISPPLANE_ROTATE_180;
-
-		if (!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)) {
-			x += (crtc_state->pipe_src_w - 1);
-			y += (crtc_state->pipe_src_h - 1);
-		}
+	/* HSW+ does this automagically in hardware */
+	if (!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv) &&
+	    rotation & DRM_ROTATE_180) {
+		x += crtc_state->pipe_src_w - 1;
+		y += crtc_state->pipe_src_h - 1;
 	}
 
 	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);

drivers/gpu/drm/i915/intel_sprite.c

@@ -427,6 +427,9 @@ vlv_update_plane(struct drm_plane *dplane,
 	if (fb->modifier[0] == I915_FORMAT_MOD_X_TILED)
 		sprctl |= SP_TILED;
 
+	if (rotation & DRM_ROTATE_180)
+		sprctl |= SP_ROTATE_180;
+
 	/* Sizes are 0 based */
 	src_w--;
 	src_h--;
@@ -437,8 +440,6 @@ vlv_update_plane(struct drm_plane *dplane,
 	sprsurf_offset = intel_compute_tile_offset(&x, &y, plane_state, 0);
 
 	if (rotation & DRM_ROTATE_180) {
-		sprctl |= SP_ROTATE_180;
-
 		x += src_w;
 		y += src_h;
 	}
@@ -546,6 +547,9 @@ ivb_update_plane(struct drm_plane *plane,
 	if (fb->modifier[0] == I915_FORMAT_MOD_X_TILED)
 		sprctl |= SPRITE_TILED;
 
+	if (rotation & DRM_ROTATE_180)
+		sprctl |= SPRITE_ROTATE_180;
+
 	if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
 		sprctl &= ~SPRITE_TRICKLE_FEED_DISABLE;
 	else
@@ -566,14 +570,11 @@ ivb_update_plane(struct drm_plane *plane,
 	intel_add_fb_offsets(&x, &y, plane_state, 0);
 	sprsurf_offset = intel_compute_tile_offset(&x, &y, plane_state, 0);
 
-	if (rotation & DRM_ROTATE_180) {
-		sprctl |= SPRITE_ROTATE_180;
-
-		/* HSW and BDW does this automagically in hardware */
-		if (!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)) {
-			x += src_w;
-			y += src_h;
-		}
+	/* HSW+ does this automagically in hardware */
+	if (!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv) &&
+	    rotation & DRM_ROTATE_180) {
+		x += src_w;
+		y += src_h;
 	}
 
 	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
@@ -684,6 +685,9 @@ ilk_update_plane(struct drm_plane *plane,
 	if (fb->modifier[0] == I915_FORMAT_MOD_X_TILED)
 		dvscntr |= DVS_TILED;
 
+	if (rotation & DRM_ROTATE_180)
+		dvscntr |= DVS_ROTATE_180;
+
 	if (IS_GEN6(dev_priv))
 		dvscntr |= DVS_TRICKLE_FEED_DISABLE; /* must disable */
 
@@ -701,8 +705,6 @@ ilk_update_plane(struct drm_plane *plane,
 	dvssurf_offset = intel_compute_tile_offset(&x, &y, plane_state, 0);
 
 	if (rotation & DRM_ROTATE_180) {
-		dvscntr |= DVS_ROTATE_180;
-
 		x += src_w;
 		y += src_h;
 	}