drm/i915: Use skl_plane_ctl() for the SKL "sprite" planes

On SKL the planes are uniform so the "sprites" can use the
primary plane code perfectly fine. The only difference we
have is the color key handling, but since we never enable that
for the primary plane the same code works just fine.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170317211808.14693-3-ville.syrjala@linux.intel.comReviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/intel_display.c

@@ -3254,7 +3254,7 @@ u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
 	return stride;
 }
 
-u32 skl_plane_ctl_format(uint32_t pixel_format)
+static u32 skl_plane_ctl_format(uint32_t pixel_format)
 {
 	switch (pixel_format) {
 	case DRM_FORMAT_C8:
@@ -3295,7 +3295,7 @@ u32 skl_plane_ctl_format(uint32_t pixel_format)
 	return 0;
 }
 
-u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
+static u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
 {
 	switch (fb_modifier) {
 	case DRM_FORMAT_MOD_NONE:
@@ -3313,7 +3313,7 @@ u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
 	return 0;
 }
 
-u32 skl_plane_ctl_rotation(unsigned int rotation)
+static u32 skl_plane_ctl_rotation(unsigned int rotation)
 {
 	switch (rotation) {
 	case DRM_ROTATE_0:
@@ -3335,13 +3335,14 @@ u32 skl_plane_ctl_rotation(unsigned int rotation)
 	return 0;
 }
 
-static u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
+u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
 		  const struct intel_plane_state *plane_state)
 {
 	struct drm_i915_private *dev_priv =
 		to_i915(plane_state->base.plane->dev);
 	const struct drm_framebuffer *fb = plane_state->base.fb;
 	unsigned int rotation = plane_state->base.rotation;
+	const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
 	u32 plane_ctl;
 
 	plane_ctl = PLANE_CTL_ENABLE;
@@ -3357,6 +3358,11 @@ static u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
 	plane_ctl |= skl_plane_ctl_tiling(fb->modifier);
 	plane_ctl |= skl_plane_ctl_rotation(rotation);
 
+	if (key->flags & I915_SET_COLORKEY_DESTINATION)
+		plane_ctl |= PLANE_CTL_KEY_ENABLE_DESTINATION;
+	else if (key->flags & I915_SET_COLORKEY_SOURCE)
+		plane_ctl |= PLANE_CTL_KEY_ENABLE_SOURCE;
+
 	return plane_ctl;
 }
 

drivers/gpu/drm/i915/intel_drv.h

@@ -1445,9 +1445,8 @@ static inline u32 intel_plane_ggtt_offset(const struct intel_plane_state *state)
 	return i915_ggtt_offset(state->vma);
 }
 
-u32 skl_plane_ctl_format(uint32_t pixel_format);
-u32 skl_plane_ctl_tiling(uint64_t fb_modifier);
-u32 skl_plane_ctl_rotation(unsigned int rotation);
+u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
+		  const struct intel_plane_state *plane_state);
 u32 skl_plane_stride(const struct drm_framebuffer *fb, int plane,
 		     unsigned int rotation);
 int skl_check_plane_surface(struct intel_plane_state *plane_state);

drivers/gpu/drm/i915/intel_sprite.c

@@ -232,23 +232,7 @@ skl_update_plane(struct drm_plane *drm_plane,
 	uint32_t src_h = drm_rect_height(&plane_state->base.src) >> 16;
 	unsigned long irqflags;
 
-	plane_ctl = PLANE_CTL_ENABLE;
-
-	if (!IS_GEMINILAKE(dev_priv)) {
-		plane_ctl |=
-			PLANE_CTL_PIPE_GAMMA_ENABLE |
-			PLANE_CTL_PIPE_CSC_ENABLE |
-			PLANE_CTL_PLANE_GAMMA_DISABLE;
-	}
-
-	plane_ctl |= skl_plane_ctl_format(fb->format->format);
-	plane_ctl |= skl_plane_ctl_tiling(fb->modifier);
-	plane_ctl |= skl_plane_ctl_rotation(rotation);
-
-	if (key->flags & I915_SET_COLORKEY_DESTINATION)
-		plane_ctl |= PLANE_CTL_KEY_ENABLE_DESTINATION;
-	else if (key->flags & I915_SET_COLORKEY_SOURCE)
-		plane_ctl |= PLANE_CTL_KEY_ENABLE_SOURCE;
+	plane_ctl = skl_plane_ctl(crtc_state, plane_state);
 
 	/* Sizes are 0 based */
 	src_w--;