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

3 files changed, 16 insertions, 6 deletions

diff --git a/drivers/gpu/drm/sti/sti_cursor.c b/drivers/gpu/drm/sti/sti_cursor.c
index 4cf3bf1b3007..217f456067c2 100644
--- a/drivers/gpu/drm/sti/sti_cursor.c
+++ b/drivers/gpu/drm/sti/sti_cursor.c
@@ -256,7 +256,7 @@ static int sti_cursor_atomic_check(struct drm_plane *drm_plane,
 }
 
 static void sti_cursor_atomic_update(struct drm_plane *drm_plane,
-				     struct drm_plane_state *oldstate)
+				     struct drm_atomic_state *state)
 {
 	struct drm_plane_state *newstate = drm_plane->state;
 	struct sti_plane *plane = to_sti_plane(drm_plane);
@@ -310,8 +310,10 @@ static void sti_cursor_atomic_update(struct drm_plane *drm_plane,
 }
 
 static void sti_cursor_atomic_disable(struct drm_plane *drm_plane,
-				      struct drm_plane_state *oldstate)
+				      struct drm_atomic_state *state)
 {
+	struct drm_plane_state *oldstate = drm_atomic_get_old_plane_state(state,
+									  drm_plane);
 	struct sti_plane *plane = to_sti_plane(drm_plane);
 
 	if (!oldstate->crtc) {
diff --git a/drivers/gpu/drm/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c
index 0407b7dbd228..eee17c6914a6 100644
--- a/drivers/gpu/drm/sti/sti_gdp.c
+++ b/drivers/gpu/drm/sti/sti_gdp.c
@@ -699,8 +699,10 @@ static int sti_gdp_atomic_check(struct drm_plane *drm_plane,
 }
 
 static void sti_gdp_atomic_update(struct drm_plane *drm_plane,
-				  struct drm_plane_state *oldstate)
+				  struct drm_atomic_state *state)
 {
+	struct drm_plane_state *oldstate = drm_atomic_get_old_plane_state(state,
+									  drm_plane);
 	struct drm_plane_state *newstate = drm_plane->state;
 	struct sti_plane *plane = to_sti_plane(drm_plane);
 	struct sti_gdp *gdp = to_sti_gdp(plane);
@@ -864,8 +866,10 @@ end:
 }
 
 static void sti_gdp_atomic_disable(struct drm_plane *drm_plane,
-				   struct drm_plane_state *oldstate)
+				   struct drm_atomic_state *state)
 {
+	struct drm_plane_state *oldstate = drm_atomic_get_old_plane_state(state,
+									  drm_plane);
 	struct sti_plane *plane = to_sti_plane(drm_plane);
 
 	if (!oldstate->crtc) {
diff --git a/drivers/gpu/drm/sti/sti_hqvdp.c b/drivers/gpu/drm/sti/sti_hqvdp.c
index 264a80d606f9..f317c9aad9c5 100644
--- a/drivers/gpu/drm/sti/sti_hqvdp.c
+++ b/drivers/gpu/drm/sti/sti_hqvdp.c
@@ -1109,8 +1109,10 @@ static int sti_hqvdp_atomic_check(struct drm_plane *drm_plane,
 }
 
 static void sti_hqvdp_atomic_update(struct drm_plane *drm_plane,
-				    struct drm_plane_state *oldstate)
+				    struct drm_atomic_state *state)
 {
+	struct drm_plane_state *oldstate = drm_atomic_get_old_plane_state(state,
+									  drm_plane);
 	struct drm_plane_state *newstate = drm_plane->state;
 	struct sti_plane *plane = to_sti_plane(drm_plane);
 	struct sti_hqvdp *hqvdp = to_sti_hqvdp(plane);
@@ -1240,8 +1242,10 @@ static void sti_hqvdp_atomic_update(struct drm_plane *drm_plane,
 }
 
 static void sti_hqvdp_atomic_disable(struct drm_plane *drm_plane,
-				     struct drm_plane_state *oldstate)
+				     struct drm_atomic_state *state)
 {
+	struct drm_plane_state *oldstate = drm_atomic_get_old_plane_state(state,
+									  drm_plane);
 	struct sti_plane *plane = to_sti_plane(drm_plane);
 
 	if (!oldstate->crtc) {