drm/atomic: Pass the full state to planes atomic disable and update

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 the remaining helpers to provide a consistent interface,
this time with the planes atomic_update and atomic_disable.

The conversion was done using the coccinelle script below, built tested on
all the drivers.

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

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

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

 struct drm_plane_helper_funcs {
	...
	void (*atomic_disable)(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_update = func,
	...,
 };
|
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_disable = func,
	...,
 };
)

@@
struct drm_plane_helper_funcs *FUNCS;
identifier f;
identifier crtc_state;
identifier plane, plane_state, state;
expression e;
@@

 f(struct drm_crtc_state *crtc_state)
 {
 	...
 	struct drm_atomic_state *state = e;
 	<+...
(
-	FUNCS->atomic_disable(plane, plane_state)
+	FUNCS->atomic_disable(plane, state)
|
-	FUNCS->atomic_update(plane, plane_state)
+	FUNCS->atomic_update(plane, state)
)
 	...+>
 }

@@
identifier plane_atomic_func.func;
identifier plane;
symbol state;
@@

 func(struct drm_plane *plane,
-    struct drm_plane_state *state)
+    struct drm_plane_state *old_plane_state)
 {
	<...
-	state
+	old_plane_state
	...>
 }

@ ignores_old_state @
identifier plane_atomic_func.func;
identifier plane, old_state;
@@

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

@ adds_old_state depends on plane_atomic_func && !ignores_old_state @
identifier plane_atomic_func.func;
identifier plane, plane_state;
@@

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

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

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

@ include depends on adds_old_state @
@@

 #include <drm/drm_atomic.h>

@ no_include depends on !include && adds_old_state @
@@

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

@@
identifier plane_atomic_func.func;
identifier plane, state;
identifier plane_state;
@@

 func(struct drm_plane *plane, struct drm_atomic_state *state) {
 	...
 	struct drm_plane_state *plane_state = drm_atomic_get_old_plane_state(state, plane);
 	<+...
-	plane_state->state
+	state
 	...+>
 }

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/20210219120032.260676-9-maxime@cerno.tech

5 files changed, 7 insertions, 8 deletions

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index ea9d73983d13..9607a7644d4b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -574,7 +574,7 @@ static void dpu_crtc_atomic_flush(struct drm_crtc *crtc,
 	 * of those planes explicitly here prior to plane flush.
 	 */
 	drm_atomic_crtc_for_each_plane(plane, crtc)
-		dpu_plane_restore(plane);
+		dpu_plane_restore(plane, state);
 
 	/* update performance setting before crtc kickoff */
 	dpu_core_perf_crtc_update(crtc, 1, false);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 3c20b4c3ca9a..91ec47a634c9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -1241,7 +1241,7 @@ static void _dpu_plane_atomic_disable(struct drm_plane *plane)
 }
 
 static void dpu_plane_atomic_update(struct drm_plane *plane,
-				struct drm_plane_state *old_state)
+				struct drm_atomic_state *state)
 {
 	struct dpu_plane *pdpu = to_dpu_plane(plane);
 	struct drm_plane_state *new_state = plane->state;
@@ -1257,7 +1257,7 @@ static void dpu_plane_atomic_update(struct drm_plane *plane,
 	}
 }
 
-void dpu_plane_restore(struct drm_plane *plane)
+void dpu_plane_restore(struct drm_plane *plane, struct drm_atomic_state *state)
 {
 	struct dpu_plane *pdpu;
 
@@ -1270,8 +1270,7 @@ void dpu_plane_restore(struct drm_plane *plane)
 
 	DPU_DEBUG_PLANE(pdpu, "\n");
 
-	/* last plane state is same as current state */
-	dpu_plane_atomic_update(plane, plane->state);
+	dpu_plane_atomic_update(plane, state);
 }
 
 static void dpu_plane_destroy(struct drm_plane *plane)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
index 13a983fa8213..03b6365a750c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
@@ -88,7 +88,7 @@ void dpu_plane_get_ctl_flush(struct drm_plane *plane, struct dpu_hw_ctl *ctl,
  * dpu_plane_restore - restore hw state if previously power collapsed
  * @plane: Pointer to drm plane structure
  */
-void dpu_plane_restore(struct drm_plane *plane);
+void dpu_plane_restore(struct drm_plane *plane, struct drm_atomic_state *state);
 
 /**
  * dpu_plane_flush - final plane operations before commit flush
diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c
index b4c74c1047ba..5d78bce980a7 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_plane.c
@@ -112,7 +112,7 @@ static int mdp4_plane_atomic_check(struct drm_plane *plane,
 }
 
 static void mdp4_plane_atomic_update(struct drm_plane *plane,
-				     struct drm_plane_state *old_state)
+				     struct drm_atomic_state *state)
 {
 	struct drm_plane_state *new_state = plane->state;
 	int ret;
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
index da1cc66f9f49..4dc82a0c12e9 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
@@ -426,7 +426,7 @@ static int mdp5_plane_atomic_check(struct drm_plane *plane,
 }
 
 static void mdp5_plane_atomic_update(struct drm_plane *plane,
-				     struct drm_plane_state *old_state)
+				     struct drm_atomic_state *state)
 {
 	struct drm_plane_state *new_state = plane->state;