[PATCH 01/10] drm/atomic: Pass the full state to planes async atomic check and update

* [PATCH 01/10] drm/atomic: Pass the full state to planes async atomic check and update
@ 2021-01-15 12:56 ` Maxime Ripard
  0 siblings, 0 replies; 110+ messages in thread
From: Maxime Ripard @ 2021-01-15 12:56 UTC (permalink / raw)
  To: Maarten Lankhorst, Thomas Zimmermann, Maxime Ripard,
	Daniel Vetter, David Airlie
  Cc: dri-devel, Harry Wentland, Leo Li, Alex Deucher,
	Christian König, Daniel Vetter, Maxime Ripard,
	Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Rob Clark,
	Sean Paul, Sandy Huang, Heiko Stübner, Eric Anholt, amd-gfx,
	linux-kernel, linux-arm-kernel, linux-mediatek, linux-arm-msm,
	freedreno, linux-rockchip

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 start convert all the remaining helpers to provide a consistent
interface, starting with the planes atomic_async_check and
atomic_async_update.

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 {
 	...
	int (*atomic_async_check)(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_async_update)(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_async_check = func,
	...,
 };
|
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_async_update = func,
 	...,
 };
)

@@
struct drm_plane_helper_funcs *FUNCS;
identifier f;
identifier dev;
identifier plane, plane_state, state;
@@

 f(struct drm_device *dev, struct drm_atomic_state *state)
 {
 	<+...
-	FUNCS->atomic_async_check(plane, plane_state)
+	FUNCS->atomic_async_check(plane, state)
 	...+>
 }

@@
struct drm_plane_helper_funcs *FUNCS;
identifier f;
identifier dev;
identifier plane, plane_state, state;
@@

 f(struct drm_device *dev, struct drm_atomic_state *state)
 {
 	<+...
-	FUNCS->atomic_async_update(plane, plane_state)
+	FUNCS->atomic_async_update(plane, state)
 	...+>
 }

@@
identifier mtk_plane_atomic_async_update;
identifier plane;
symbol new_state, state;
expression e;
@@

  void mtk_plane_atomic_async_update(struct drm_plane *plane, struct drm_plane_state *new_state)
{
  ...
- struct mtk_plane_state *state = e;
+ struct mtk_plane_state *new_plane_state = e;
  <+...
-       state
+       new_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 *new_plane_state)
 {
	<...
-	state
+	new_plane_state
	...>
 }

@ ignores_new_state @
identifier plane_atomic_func.func;
identifier plane, new_plane_state;
@@

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

@ adds_new_state depends on plane_atomic_func && !ignores_new_state @
identifier plane_atomic_func.func;
identifier plane, new_plane_state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *new_plane_state)
 {
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_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_new_state @
@@

 #include <drm/drm_atomic.h>

@ no_include depends on !include && adds_new_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_new_plane_state(state, plane);
        <+...
-       plane_state->state
+       state
        ...+>
 }

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |  8 ++-
 drivers/gpu/drm/drm_atomic_helper.c           |  4 +-
 drivers/gpu/drm/mediatek/mtk_drm_plane.c      | 26 +++++----
 drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c    | 33 ++++++-----
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c   | 16 ++++--
 drivers/gpu/drm/vc4/vc4_plane.c               | 56 ++++++++++---------
 include/drm/drm_modeset_helper_vtables.h      | 14 ++---
 7 files changed, 87 insertions(+), 70 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 5675c1f9368a..476bf2e6a4f4 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6475,7 +6475,7 @@ static int dm_plane_atomic_check(struct drm_plane *plane,
 }
 
 static int dm_plane_atomic_async_check(struct drm_plane *plane,
-				       struct drm_plane_state *new_plane_state)
+				       struct drm_atomic_state *state)
 {
 	/* Only support async updates on cursor planes. */
 	if (plane->type != DRM_PLANE_TYPE_CURSOR)
@@ -6485,10 +6485,12 @@ static int dm_plane_atomic_async_check(struct drm_plane *plane,
 }
 
 static void dm_plane_atomic_async_update(struct drm_plane *plane,
-					 struct drm_plane_state *new_state)
+					 struct drm_atomic_state *state)
 {
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
 	struct drm_plane_state *old_state =
-		drm_atomic_get_old_plane_state(new_state->state, plane);
+		drm_atomic_get_old_plane_state(state, plane);
 
 	trace_amdgpu_dm_atomic_update_cursor(new_state);
 
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index a84dc427cf82..f9488fd25b1d 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1742,7 +1742,7 @@ int drm_atomic_helper_async_check(struct drm_device *dev,
 		return -EBUSY;
 	}
 
-	return funcs->atomic_async_check(plane, new_plane_state);
+	return funcs->atomic_async_check(plane, state);
 }
 EXPORT_SYMBOL(drm_atomic_helper_async_check);
 
@@ -1772,7 +1772,7 @@ void drm_atomic_helper_async_commit(struct drm_device *dev,
 		struct drm_framebuffer *old_fb = plane->state->fb;
 
 		funcs = plane->helper_private;
-		funcs->atomic_async_update(plane, plane_state);
+		funcs->atomic_async_update(plane, state);
 
 		/*
 		 * ->atomic_async_update() is supposed to update the
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index 92141a19681b..30ebcfd8832f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -77,12 +77,14 @@ static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
 }
 
 static int mtk_plane_atomic_async_check(struct drm_plane *plane,
-					struct drm_plane_state *state)
+					struct drm_atomic_state *state)
 {
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
 	struct drm_crtc_state *crtc_state;
 	int ret;
 
-	if (plane != state->crtc->cursor)
+	if (plane != new_plane_state->crtc->cursor)
 		return -EINVAL;
 
 	if (!plane->state)
@@ -91,16 +93,16 @@ static int mtk_plane_atomic_async_check(struct drm_plane *plane,
 	if (!plane->state->fb)
 		return -EINVAL;
 
-	ret = mtk_drm_crtc_plane_check(state->crtc, plane,
-				       to_mtk_plane_state(state));
+	ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane,
+				       to_mtk_plane_state(new_plane_state));
 	if (ret)
 		return ret;
 
-	if (state->state)
-		crtc_state = drm_atomic_get_existing_crtc_state(state->state,
-								state->crtc);
+	if (state)
+		crtc_state = drm_atomic_get_existing_crtc_state(state,
+								new_plane_state->crtc);
 	else /* Special case for asynchronous cursor updates. */
-		crtc_state = state->crtc->state;
+		crtc_state = new_plane_state->crtc->state;
 
 	return drm_atomic_helper_check_plane_state(plane->state, crtc_state,
 						   DRM_PLANE_HELPER_NO_SCALING,
@@ -109,9 +111,11 @@ static int mtk_plane_atomic_async_check(struct drm_plane *plane,
 }
 
 static void mtk_plane_atomic_async_update(struct drm_plane *plane,
-					  struct drm_plane_state *new_state)
+					  struct drm_atomic_state *state)
 {
-	struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct mtk_plane_state *new_plane_state = to_mtk_plane_state(plane->state);
 
 	plane->state->crtc_x = new_state->crtc_x;
 	plane->state->crtc_y = new_state->crtc_y;
@@ -122,7 +126,7 @@ static void mtk_plane_atomic_async_update(struct drm_plane *plane,
 	plane->state->src_h = new_state->src_h;
 	plane->state->src_w = new_state->src_w;
 	swap(plane->state->fb, new_state->fb);
-	state->pending.async_dirty = true;
+	new_plane_state->pending.async_dirty = true;
 
 	mtk_drm_crtc_async_update(new_state->crtc, plane, new_state);
 }
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
index 83423092de2f..05fa8255caeb 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
@@ -5,6 +5,7 @@
  * Author: Rob Clark <robdclark@gmail.com>
  */
 
+#include <drm/drm_atomic.h>
 #include <drm/drm_damage_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_print.h>
@@ -438,41 +439,43 @@ static void mdp5_plane_atomic_update(struct drm_plane *plane,
 }
 
 static int mdp5_plane_atomic_async_check(struct drm_plane *plane,
-					 struct drm_plane_state *state)
+					 struct drm_atomic_state *state)
 {
-	struct mdp5_plane_state *mdp5_state = to_mdp5_plane_state(state);
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
+	struct mdp5_plane_state *mdp5_state = to_mdp5_plane_state(new_plane_state);
 	struct drm_crtc_state *crtc_state;
 	int min_scale, max_scale;
 	int ret;
 
-	crtc_state = drm_atomic_get_existing_crtc_state(state->state,
-							state->crtc);
+	crtc_state = drm_atomic_get_existing_crtc_state(state,
+							new_plane_state->crtc);
 	if (WARN_ON(!crtc_state))
 		return -EINVAL;
 
 	if (!crtc_state->active)
 		return -EINVAL;
 
-	mdp5_state = to_mdp5_plane_state(state);
+	mdp5_state = to_mdp5_plane_state(new_plane_state);
 
 	/* don't use fast path if we don't have a hwpipe allocated yet */
 	if (!mdp5_state->hwpipe)
 		return -EINVAL;
 
 	/* only allow changing of position(crtc x/y or src x/y) in fast path */
-	if (plane->state->crtc != state->crtc ||
-	    plane->state->src_w != state->src_w ||
-	    plane->state->src_h != state->src_h ||
-	    plane->state->crtc_w != state->crtc_w ||
-	    plane->state->crtc_h != state->crtc_h ||
+	if (plane->state->crtc != new_plane_state->crtc ||
+	    plane->state->src_w != new_plane_state->src_w ||
+	    plane->state->src_h != new_plane_state->src_h ||
+	    plane->state->crtc_w != new_plane_state->crtc_w ||
+	    plane->state->crtc_h != new_plane_state->crtc_h ||
 	    !plane->state->fb ||
-	    plane->state->fb != state->fb)
+	    plane->state->fb != new_plane_state->fb)
 		return -EINVAL;
 
 	min_scale = FRAC_16_16(1, 8);
 	max_scale = FRAC_16_16(8, 1);
 
-	ret = drm_atomic_helper_check_plane_state(state, crtc_state,
+	ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
 						  min_scale, max_scale,
 						  true, true);
 	if (ret)
@@ -485,15 +488,17 @@ static int mdp5_plane_atomic_async_check(struct drm_plane *plane,
 	 * also assign/unassign the hwpipe(s) tied to the plane. We avoid
 	 * taking the fast path for both these reasons.
 	 */
-	if (state->visible != plane->state->visible)
+	if (new_plane_state->visible != plane->state->visible)
 		return -EINVAL;
 
 	return 0;
 }
 
 static void mdp5_plane_atomic_async_update(struct drm_plane *plane,
-					   struct drm_plane_state *new_state)
+					   struct drm_atomic_state *state)
 {
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
 	struct drm_framebuffer *old_fb = plane->state->fb;
 
 	plane->state->src_x = new_state->src_x;
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 8d15cabdcb02..fefeab73ca27 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1021,8 +1021,10 @@ static void vop_plane_atomic_update(struct drm_plane *plane,
 }
 
 static int vop_plane_atomic_async_check(struct drm_plane *plane,
-					struct drm_plane_state *state)
+					struct drm_atomic_state *state)
 {
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
 	struct vop_win *vop_win = to_vop_win(plane);
 	const struct vop_win_data *win = vop_win->data;
 	int min_scale = win->phy->scl ? FRAC_16_16(1, 8) :
@@ -1031,7 +1033,7 @@ static int vop_plane_atomic_async_check(struct drm_plane *plane,
 					DRM_PLANE_HELPER_NO_SCALING;
 	struct drm_crtc_state *crtc_state;
 
-	if (plane != state->crtc->cursor)
+	if (plane != new_plane_state->crtc->cursor)
 		return -EINVAL;
 
 	if (!plane->state)
@@ -1040,9 +1042,9 @@ static int vop_plane_atomic_async_check(struct drm_plane *plane,
 	if (!plane->state->fb)
 		return -EINVAL;
 
-	if (state->state)
-		crtc_state = drm_atomic_get_existing_crtc_state(state->state,
-								state->crtc);
+	if (state)
+		crtc_state = drm_atomic_get_existing_crtc_state(state,
+								new_plane_state->crtc);
 	else /* Special case for asynchronous cursor updates. */
 		crtc_state = plane->crtc->state;
 
@@ -1052,8 +1054,10 @@ static int vop_plane_atomic_async_check(struct drm_plane *plane,
 }
 
 static void vop_plane_atomic_async_update(struct drm_plane *plane,
-					  struct drm_plane_state *new_state)
+					  struct drm_atomic_state *state)
 {
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
 	struct vop *vop = to_vop(plane->state->crtc);
 	struct drm_framebuffer *old_fb = plane->state->fb;
 
diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
index 6b39cc2ca18d..48fdffebb45f 100644
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -1118,32 +1118,34 @@ void vc4_plane_async_set_fb(struct drm_plane *plane, struct drm_framebuffer *fb)
 }
 
 static void vc4_plane_atomic_async_update(struct drm_plane *plane,
-					  struct drm_plane_state *state)
+					  struct drm_atomic_state *state)
 {
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
 	struct vc4_plane_state *vc4_state, *new_vc4_state;
 
-	swap(plane->state->fb, state->fb);
-	plane->state->crtc_x = state->crtc_x;
-	plane->state->crtc_y = state->crtc_y;
-	plane->state->crtc_w = state->crtc_w;
-	plane->state->crtc_h = state->crtc_h;
-	plane->state->src_x = state->src_x;
-	plane->state->src_y = state->src_y;
-	plane->state->src_w = state->src_w;
-	plane->state->src_h = state->src_h;
-	plane->state->src_h = state->src_h;
-	plane->state->alpha = state->alpha;
-	plane->state->pixel_blend_mode = state->pixel_blend_mode;
-	plane->state->rotation = state->rotation;
-	plane->state->zpos = state->zpos;
-	plane->state->normalized_zpos = state->normalized_zpos;
-	plane->state->color_encoding = state->color_encoding;
-	plane->state->color_range = state->color_range;
-	plane->state->src = state->src;
-	plane->state->dst = state->dst;
-	plane->state->visible = state->visible;
+	swap(plane->state->fb, new_plane_state->fb);
+	plane->state->crtc_x = new_plane_state->crtc_x;
+	plane->state->crtc_y = new_plane_state->crtc_y;
+	plane->state->crtc_w = new_plane_state->crtc_w;
+	plane->state->crtc_h = new_plane_state->crtc_h;
+	plane->state->src_x = new_plane_state->src_x;
+	plane->state->src_y = new_plane_state->src_y;
+	plane->state->src_w = new_plane_state->src_w;
+	plane->state->src_h = new_plane_state->src_h;
+	plane->state->src_h = new_plane_state->src_h;
+	plane->state->alpha = new_plane_state->alpha;
+	plane->state->pixel_blend_mode = new_plane_state->pixel_blend_mode;
+	plane->state->rotation = new_plane_state->rotation;
+	plane->state->zpos = new_plane_state->zpos;
+	plane->state->normalized_zpos = new_plane_state->normalized_zpos;
+	plane->state->color_encoding = new_plane_state->color_encoding;
+	plane->state->color_range = new_plane_state->color_range;
+	plane->state->src = new_plane_state->src;
+	plane->state->dst = new_plane_state->dst;
+	plane->state->visible = new_plane_state->visible;
 
-	new_vc4_state = to_vc4_plane_state(state);
+	new_vc4_state = to_vc4_plane_state(new_plane_state);
 	vc4_state = to_vc4_plane_state(plane->state);
 
 	vc4_state->crtc_x = new_vc4_state->crtc_x;
@@ -1187,23 +1189,25 @@ static void vc4_plane_atomic_async_update(struct drm_plane *plane,
 }
 
 static int vc4_plane_atomic_async_check(struct drm_plane *plane,
-					struct drm_plane_state *state)
+					struct drm_atomic_state *state)
 {
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
 	struct vc4_plane_state *old_vc4_state, *new_vc4_state;
 	int ret;
 	u32 i;
 
-	ret = vc4_plane_mode_set(plane, state);
+	ret = vc4_plane_mode_set(plane, new_plane_state);
 	if (ret)
 		return ret;
 
 	old_vc4_state = to_vc4_plane_state(plane->state);
-	new_vc4_state = to_vc4_plane_state(state);
+	new_vc4_state = to_vc4_plane_state(new_plane_state);
 	if (old_vc4_state->dlist_count != new_vc4_state->dlist_count ||
 	    old_vc4_state->pos0_offset != new_vc4_state->pos0_offset ||
 	    old_vc4_state->pos2_offset != new_vc4_state->pos2_offset ||
 	    old_vc4_state->ptr0_offset != new_vc4_state->ptr0_offset ||
-	    vc4_lbm_size(plane->state) != vc4_lbm_size(state))
+	    vc4_lbm_size(plane->state) != vc4_lbm_size(new_plane_state))
 		return -EINVAL;
 
 	/* Only pos0, pos2 and ptr0 DWORDS can be updated in an async update
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index cbe613858a93..a7141e6e05c5 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -1286,7 +1286,7 @@ struct drm_plane_helper_funcs {
 	/**
 	 * @atomic_async_check:
 	 *
-	 * Drivers should set this function pointer to check if the plane state
+	 * Drivers should set this function pointer to check if the atomic state
 	 * can be updated in a async fashion. Here async means "not vblank
 	 * synchronized".
 	 *
@@ -1300,7 +1300,7 @@ struct drm_plane_helper_funcs {
 	 * can not be applied in asynchronous manner.
 	 */
 	int (*atomic_async_check)(struct drm_plane *plane,
-				  struct drm_plane_state *state);
+				  struct drm_atomic_state *state);
 
 	/**
 	 * @atomic_async_update:
@@ -1316,11 +1316,9 @@ struct drm_plane_helper_funcs {
 	 * update won't happen if there is an outstanding commit modifying
 	 * the same plane.
 	 *
-	 * Note that unlike &drm_plane_helper_funcs.atomic_update this hook
-	 * takes the new &drm_plane_state as parameter. When doing async_update
-	 * drivers shouldn't replace the &drm_plane_state but update the
-	 * current one with the new plane configurations in the new
-	 * plane_state.
+	 * When doing async_update drivers shouldn't replace the
+	 * &drm_plane_state but update the current one with the new plane
+	 * configurations in the new plane_state.
 	 *
 	 * Drivers should also swap the framebuffers between current plane
 	 * state (&drm_plane.state) and new_state.
@@ -1339,7 +1337,7 @@ struct drm_plane_helper_funcs {
 	 *    for deferring if needed, until a common solution is created.
 	 */
 	void (*atomic_async_update)(struct drm_plane *plane,
-				    struct drm_plane_state *new_state);
+				    struct drm_atomic_state *state);
 };
 
 /**
-- 
2.29.2


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