drm/atomic: Pass the full state to planes atomic_check

The current atomic helpers have either their object state being passed as
an argument or the full atomic state.

The former is the pattern that was done at first, before switching to the
latter for new hooks or when it was needed.

Let's convert all the remaining helpers to provide a consistent
interface, starting with the planes atomic_check.

The conversion was done using the coccinelle script below plus some
manual changes for vmwgfx, built tested on all the drivers.

@@
identifier plane, plane_state;
symbol state;
@@

 struct drm_plane_helper_funcs {
 	...
	int (*atomic_check)(struct drm_plane *plane,
-			    struct drm_plane_state *plane_state);
+			    struct drm_atomic_state *state);
	...
}

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

static const struct drm_plane_helper_funcs helpers = {
	...,
 	.atomic_check = func,
	...,
};

@@
struct drm_plane_helper_funcs *FUNCS;
identifier f;
identifier dev;
identifier plane, plane_state, state;
@@

 f(struct drm_device *dev, struct drm_atomic_state *state)
 {
 	<+...
-	FUNCS->atomic_check(plane, plane_state)
+	FUNCS->atomic_check(plane, state)
 	...+>
 }

@ ignores_new_state @
identifier plane_atomic_func.func;
identifier plane, new_plane_state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
 {
	... when != new_plane_state
 }

@ adds_new_state depends on plane_atomic_func && !ignores_new_state @
identifier plane_atomic_func.func;
identifier plane, new_plane_state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
 {
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane);
 	...
 }

@ depends on plane_atomic_func @
identifier plane_atomic_func.func;
identifier plane, new_plane_state;
@@

 func(struct drm_plane *plane,
-     struct drm_plane_state *new_plane_state
+     struct drm_atomic_state *state
     )
 { ... }

@ include depends on adds_new_state @
@@

 #include <drm/drm_atomic.h>

@ no_include depends on !include && adds_new_state @
@@

+ #include <drm/drm_atomic.h>
  #include <drm/...>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-4-maxime@cerno.tech

2 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/drm/armada/armada_plane.c b/drivers/gpu/drm/armada/armada_plane.c
index 27f83b07c8eb..b1266c588102 100644
--- a/drivers/gpu/drm/armada/armada_plane.c
+++ b/drivers/gpu/drm/armada/armada_plane.c
@@ -106,8 +106,10 @@ void armada_drm_plane_cleanup_fb(struct drm_plane *plane,
 }
 
 int armada_drm_plane_atomic_check(struct drm_plane *plane,
-	struct drm_plane_state *new_plane_state)
+	struct drm_atomic_state *state)
 {
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
 	struct armada_plane_state *st = to_armada_plane_state(new_plane_state);
 	struct drm_crtc *crtc = new_plane_state->crtc;
 	struct drm_crtc_state *crtc_state;
diff --git a/drivers/gpu/drm/armada/armada_plane.h b/drivers/gpu/drm/armada/armada_plane.h
index 2707ec781941..51dab8d8da22 100644
--- a/drivers/gpu/drm/armada/armada_plane.h
+++ b/drivers/gpu/drm/armada/armada_plane.h
@@ -26,7 +26,7 @@ int armada_drm_plane_prepare_fb(struct drm_plane *plane,
 void armada_drm_plane_cleanup_fb(struct drm_plane *plane,
 	struct drm_plane_state *old_state);
 int armada_drm_plane_atomic_check(struct drm_plane *plane,
-	struct drm_plane_state *state);
+	struct drm_atomic_state *state);
 void armada_plane_reset(struct drm_plane *plane);
 struct drm_plane_state *armada_plane_duplicate_state(struct drm_plane *plane);
 void armada_plane_destroy_state(struct drm_plane *plane,