drm/i915: Clarify sprite plane function names (v4)

A few of the sprite-related function names in i915 are very similar
(e.g., intel_enable_planes() vs intel_crtc_enable_planes()) and don't
make it clear whether they only operate on sprite planes, or whether
they also apply to all universal plane types.  Rename a few functions to
be more consistent with our function naming for primary/cursor planes or
to clarify that they apply specifically to sprite planes:

 - s/intel_disable_planes/intel_disable_sprite_planes/
 - s/intel_enable_planes/intel_enable_sprite_planes/

Also, drop the sprite-specific intel_destroy_plane() and just use
the type-agnostic intel_plane_destroy() function.  The extra 'disable'
call that intel_destroy_plane() did is unnecessary since the plane will
already be disabled due to framebuffer destruction by the point it gets
called.

v2: Earlier consolidation patches have reduced the number of functions
    we need to rename here.

v3: Also rename intel_plane_funcs vtable to intel_sprite_plane_funcs
    for consistency with primary/cursor.  (Ander)

v4: Convert comment for intel_plane_destroy() to kerneldoc now that it
    is no longer a static function.  (Ander)

Reviewed-by(v1): Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

3 files changed, 16 insertions, 17 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b7c59d56c3a6..d304cb87493d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4037,7 +4037,7 @@ static void ironlake_pfit_enable(struct intel_crtc *crtc)
         }
 }
 
-static void intel_enable_planes(struct drm_crtc *crtc)
+static void intel_enable_sprite_planes(struct drm_crtc *crtc)
 {
         struct drm_device *dev = crtc->dev;
         enum pipe pipe = to_intel_crtc(crtc)->pipe;
@@ -4051,7 +4051,7 @@ static void intel_enable_planes(struct drm_crtc *crtc)
         }
 }
 
-static void intel_disable_planes(struct drm_crtc *crtc)
+static void intel_disable_sprite_planes(struct drm_crtc *crtc)
 {
         struct drm_device *dev = crtc->dev;
         enum pipe pipe = to_intel_crtc(crtc)->pipe;
@@ -4195,7 +4195,7 @@ static void intel_crtc_enable_planes(struct drm_crtc *crtc)
         int pipe = intel_crtc->pipe;
 
         intel_enable_primary_hw_plane(crtc->primary, crtc);
-        intel_enable_planes(crtc);
+        intel_enable_sprite_planes(crtc);
         intel_crtc_update_cursor(crtc, true);
         intel_crtc_dpms_overlay(intel_crtc, true);
 
@@ -4230,7 +4230,7 @@ static void intel_crtc_disable_planes(struct drm_crtc *crtc)
 
         intel_crtc_dpms_overlay(intel_crtc, false);
         intel_crtc_update_cursor(crtc, false);
-        intel_disable_planes(crtc);
+        intel_disable_sprite_planes(crtc);
         intel_disable_primary_hw_plane(crtc->primary, crtc);
 
         /*
@@ -12012,8 +12012,14 @@ intel_disable_plane(struct drm_plane *plane)
                                           0, 0, 0, 0, 0, 0, 0, 0);
 }
 
-/* Common destruction function for both primary and cursor planes */
-static void intel_plane_destroy(struct drm_plane *plane)
+/**
+ * intel_plane_destroy - destroy a plane
+ * @plane: plane to destroy
+ *
+ * Common destruction function for all types of planes (primary, cursor,
+ * sprite).
+ */
+void intel_plane_destroy(struct drm_plane *plane)
 {
         struct intel_plane *intel_plane = to_intel_plane(plane);
         drm_plane_cleanup(plane);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 8051468a3f7e..8022ea570a21 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1055,6 +1055,7 @@ int intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
                        uint32_t src_x, uint32_t src_y,
                        uint32_t src_w, uint32_t src_h);
 int intel_disable_plane(struct drm_plane *plane);
+void intel_plane_destroy(struct drm_plane *plane);
 
 /* intel_dp_mst.c */
 int intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_id);
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 1dfdccbb9ab2..bb67ae70dafd 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1306,14 +1306,6 @@ intel_commit_sprite_plane(struct drm_plane *plane,
         }
 }
 
-static void intel_destroy_plane(struct drm_plane *plane)
-{
-        struct intel_plane *intel_plane = to_intel_plane(plane);
-        intel_disable_plane(plane);
-        drm_plane_cleanup(plane);
-        kfree(intel_plane);
-}
-
 int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
                               struct drm_file *file_priv)
 {
@@ -1413,10 +1405,10 @@ int intel_plane_restore(struct drm_plane *plane)
                                   intel_plane->src_w, intel_plane->src_h);
 }
 
-static const struct drm_plane_funcs intel_plane_funcs = {
+static const struct drm_plane_funcs intel_sprite_plane_funcs = {
         .update_plane = intel_update_plane,
         .disable_plane = intel_disable_plane,
-        .destroy = intel_destroy_plane,
+        .destroy = intel_plane_destroy,
         .set_property = intel_plane_set_property,
 };
 
@@ -1553,7 +1545,7 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
         intel_plane->commit_plane = intel_commit_sprite_plane;
         possible_crtcs = (1 << pipe);
         ret = drm_universal_plane_init(dev, &intel_plane->base, possible_crtcs,
-                                       &intel_plane_funcs,
+                                       &intel_sprite_plane_funcs,
                                        plane_formats, num_plane_formats,
                                        DRM_PLANE_TYPE_OVERLAY);
         if (ret) {