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

2 files changed, 12 insertions, 11 deletions

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
index 3f7027e40c79..a4b54e841c76 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
@@ -101,17 +101,17 @@ static int hibmc_plane_atomic_check(struct drm_plane *plane,
 static void hibmc_plane_atomic_update(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;
 	u32 reg;
 	s64 gpu_addr = 0;
 	u32 line_l;
 	struct hibmc_drm_private *priv = to_hibmc_drm_private(plane->dev);
 	struct drm_gem_vram_object *gbo;
 
-	if (!state->fb)
+	if (!new_state->fb)
 		return;
 
-	gbo = drm_gem_vram_of_gem(state->fb->obj[0]);
+	gbo = drm_gem_vram_of_gem(new_state->fb->obj[0]);
 
 	gpu_addr = drm_gem_vram_offset(gbo);
 	if (WARN_ON_ONCE(gpu_addr < 0))
@@ -119,9 +119,9 @@ static void hibmc_plane_atomic_update(struct drm_plane *plane,
 
 	writel(gpu_addr, priv->mmio + HIBMC_CRT_FB_ADDRESS);
 
-	reg = state->fb->width * (state->fb->format->cpp[0]);
+	reg = new_state->fb->width * (new_state->fb->format->cpp[0]);
 
-	line_l = state->fb->pitches[0];
+	line_l = new_state->fb->pitches[0];
 	writel(HIBMC_FIELD(HIBMC_CRT_FB_WIDTH_WIDTH, reg) |
 	       HIBMC_FIELD(HIBMC_CRT_FB_WIDTH_OFFS, line_l),
 	       priv->mmio + HIBMC_CRT_FB_WIDTH);
@@ -130,7 +130,7 @@ static void hibmc_plane_atomic_update(struct drm_plane *plane,
 	reg = readl(priv->mmio + HIBMC_CRT_DISP_CTL);
 	reg &= ~HIBMC_CRT_DISP_CTL_FORMAT_MASK;
 	reg |= HIBMC_FIELD(HIBMC_CRT_DISP_CTL_FORMAT,
-			   state->fb->format->cpp[0] * 8 / 16);
+			   new_state->fb->format->cpp[0] * 8 / 16);
 	writel(reg, priv->mmio + HIBMC_CRT_DISP_CTL);
 }
 
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index 320631cb7034..19416d9be46b 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -806,13 +806,14 @@ static int ade_plane_atomic_check(struct drm_plane *plane,
 static void ade_plane_atomic_update(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;
 	struct kirin_plane *kplane = to_kirin_plane(plane);
 
-	ade_update_channel(kplane, state->fb, state->crtc_x, state->crtc_y,
-			   state->crtc_w, state->crtc_h,
-			   state->src_x >> 16, state->src_y >> 16,
-			   state->src_w >> 16, state->src_h >> 16);
+	ade_update_channel(kplane, new_state->fb, new_state->crtc_x,
+			   new_state->crtc_y,
+			   new_state->crtc_w, new_state->crtc_h,
+			   new_state->src_x >> 16, new_state->src_y >> 16,
+			   new_state->src_w >> 16, new_state->src_h >> 16);
 }
 
 static void ade_plane_atomic_disable(struct drm_plane *plane,