drm: Rename plane atomic_check state names

Most drivers call the argument to the plane atomic_check hook simply
state, which is going to conflict with the global atomic state in a
later rework. Let's rename it to new_plane_state (or new_state depending
on the convention used in the driver).

This was done using the coccinelle script below, and built tested:

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

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

@ has_old_state @
identifier plane_atomic_func.func;
identifier plane;
expression e;
symbol old_state;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *state)
 {
 	...
 	struct drm_plane_state *old_state = e;
 	...
 }

@ depends on has_old_state @
identifier plane_atomic_func.func;
identifier plane;
symbol old_state;
@@

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

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

 func(struct drm_plane *plane, struct drm_plane_state *state)
 {
 	...
 }

@ depends on has_state @
identifier plane_atomic_func.func;
identifier plane;
symbol old_state;
@@

 func(struct drm_plane *plane,
-	struct drm_plane_state *state
+	struct drm_plane_state *new_plane_state
     )
 {
 	<+...
-	state
+	new_plane_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/20210219120032.260676-2-maxime@cerno.tech

2 files changed, 12 insertions, 8 deletions

diff --git a/drivers/gpu/drm/meson/meson_overlay.c b/drivers/gpu/drm/meson/meson_overlay.c
index be6ca49e20b0..cad5c416e827 100644
--- a/drivers/gpu/drm/meson/meson_overlay.c
+++ b/drivers/gpu/drm/meson/meson_overlay.c
@@ -165,18 +165,20 @@ struct meson_overlay {
 #define FRAC_16_16(mult, div)    (((mult) << 16) / (div))
 
 static int meson_overlay_atomic_check(struct drm_plane *plane,
-				      struct drm_plane_state *state)
+				      struct drm_plane_state *new_plane_state)
 {
 	struct drm_crtc_state *crtc_state;
 
-	if (!state->crtc)
+	if (!new_plane_state->crtc)
 		return 0;
 
-	crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
+	crtc_state = drm_atomic_get_crtc_state(new_plane_state->state,
+					       new_plane_state->crtc);
 	if (IS_ERR(crtc_state))
 		return PTR_ERR(crtc_state);
 
-	return drm_atomic_helper_check_plane_state(state, crtc_state,
+	return drm_atomic_helper_check_plane_state(new_plane_state,
+						   crtc_state,
 						   FRAC_16_16(1, 5),
 						   FRAC_16_16(5, 1),
 						   true, true);
diff --git a/drivers/gpu/drm/meson/meson_plane.c b/drivers/gpu/drm/meson/meson_plane.c
index b8309d8fc277..961615c471ee 100644
--- a/drivers/gpu/drm/meson/meson_plane.c
+++ b/drivers/gpu/drm/meson/meson_plane.c
@@ -71,14 +71,15 @@ struct meson_plane {
 #define FRAC_16_16(mult, div)    (((mult) << 16) / (div))
 
 static int meson_plane_atomic_check(struct drm_plane *plane,
-				    struct drm_plane_state *state)
+				    struct drm_plane_state *new_plane_state)
 {
 	struct drm_crtc_state *crtc_state;
 
-	if (!state->crtc)
+	if (!new_plane_state->crtc)
 		return 0;
 
-	crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
+	crtc_state = drm_atomic_get_crtc_state(new_plane_state->state,
+					       new_plane_state->crtc);
 	if (IS_ERR(crtc_state))
 		return PTR_ERR(crtc_state);
 
@@ -87,7 +88,8 @@ static int meson_plane_atomic_check(struct drm_plane *plane,
 	 * - Upscaling up to 5x, vertical and horizontal
 	 * - Final coordinates must match crtc size
 	 */
-	return drm_atomic_helper_check_plane_state(state, crtc_state,
+	return drm_atomic_helper_check_plane_state(new_plane_state,
+						   crtc_state,
 						   FRAC_16_16(1, 5),
 						   DRM_PLANE_HELPER_NO_SCALING,
 						   false, true);