drm: Rename plane->state variables in atomic update and disable

Some drivers are storing the plane->state pointer in atomic_update and
atomic_disable in a variable simply called state, while the state passed
as an argument is called old_state.

In order to ease subsequent reworks and to avoid confusing or
inconsistent names, let's rename those variables to new_state.

This was done using the following coccinelle script, plus some manual
changes for mtk and tegra.

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

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

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

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

@ depends on moves_new_state_old_state @
identifier plane_atomic_func.func;
identifier plane;
identifier old_state;
symbol state;
@@

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

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

 func(struct drm_plane *plane, struct drm_plane_state *oldstate)
 {
 	...
-	struct drm_plane_state *state = plane->state;
+	struct drm_plane_state *newstate = plane->state;
	...
 }

@ depends on moves_new_state_oldstate @
identifier plane_atomic_func.func;
identifier plane;
identifier old_state;
symbol state;
@@

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

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

 func(struct drm_plane *plane, struct drm_plane_state *old_pstate)
 {
 	...
-	struct drm_plane_state *state = plane->state;
+	struct drm_plane_state *new_pstate = plane->state;
	...
 }

@ depends on moves_new_state_old_pstate @
identifier plane_atomic_func.func;
identifier plane;
identifier old_pstate;
symbol state;
@@

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

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-8-maxime@cerno.tech

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c
index 7d2aa2cbcff6..4272e121a185 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c
@@ -80,7 +80,7 @@ static void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane,
 
 {
 	struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
-	struct drm_plane_state *state = plane->state;
+	struct drm_plane_state *new_state = plane->state;
 	struct drm_framebuffer *fb = plane->state->fb;
 	struct drm_gem_cma_object *gem;
 	unsigned int alpha = DCU_LAYER_AB_NONE, bpp;
@@ -128,11 +128,11 @@ static void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane,
 	}
 
 	regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 1),
-		     DCU_LAYER_HEIGHT(state->crtc_h) |
-		     DCU_LAYER_WIDTH(state->crtc_w));
+		     DCU_LAYER_HEIGHT(new_state->crtc_h) |
+		     DCU_LAYER_WIDTH(new_state->crtc_w));
 	regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 2),
-		     DCU_LAYER_POSY(state->crtc_y) |
-		     DCU_LAYER_POSX(state->crtc_x));
+		     DCU_LAYER_POSY(new_state->crtc_y) |
+		     DCU_LAYER_POSX(new_state->crtc_x));
 	regmap_write(fsl_dev->regmap,
 		     DCU_CTRLDESCLN(index, 3), gem->paddr);
 	regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4),