[PATCH v2 0/3] Move blender setup from individual planes to crtc commit in sun4i-drm

[PATCH v2 0/3] Move blender setup from individual planes to crtc commit in sun4i-drm

[Ondřej Jirman]

From: Ondrej Jirman <megi@xff.cz>

This series refactors blender setup from individual planes to a common
place where it can be performed at once and is easier to reason about.

In the process this fixes a few bugs that allowed blender pipes to be
disabled while corresponding DRM planes were requested to be enabled.

Please take a look. :)

v2:
- use regmap_write where possible
- add review tags

Thank you very much,
	Ondřej Jirman

Ondrej Jirman (3):
  drm/sun4i: Unify sun8i_*_layer structs
  drm/sun4i: Add more parameters to sunxi_engine commit callback
  drm/sun4i: Fix layer zpos change/atomic modesetting

 drivers/gpu/drm/sun4i/sun4i_backend.c  |  4 +-
 drivers/gpu/drm/sun4i/sun4i_crtc.c     |  2 +-
 drivers/gpu/drm/sun4i/sun8i_mixer.c    | 70 ++++++++++++++++++++-
 drivers/gpu/drm/sun4i/sun8i_mixer.h    | 20 ++++++
 drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 85 +++----------------------
 drivers/gpu/drm/sun4i/sun8i_ui_layer.h | 20 ++----
 drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 86 +++-----------------------
 drivers/gpu/drm/sun4i/sun8i_vi_layer.h | 20 ++----
 drivers/gpu/drm/sun4i/sunxi_engine.h   | 13 +++-
 9 files changed, 125 insertions(+), 195 deletions(-)

-- 
2.44.0

[PATCH v2 1/3] drm/sun4i: Unify sun8i_*_layer structs

[Ondřej Jirman]

From: Ondrej Jirman <megi@xff.cz>

These structs are identical, use a single struct to represent private
data for the DRM plane. This is a preparation for configuring layer
routing from the CRTC (mixer) instead of current approach of setting
up routing from individual layer's atomic_update callback.

Signed-off-by: Ondrej Jirman <megi@xff.cz>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
 drivers/gpu/drm/sun4i/sun8i_mixer.c    |  4 ++--
 drivers/gpu/drm/sun4i/sun8i_mixer.h    | 14 ++++++++++++++
 drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 14 +++++++-------
 drivers/gpu/drm/sun4i/sun8i_ui_layer.h | 20 ++++----------------
 drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 14 +++++++-------
 drivers/gpu/drm/sun4i/sun8i_vi_layer.h | 20 ++++----------------
 6 files changed, 38 insertions(+), 48 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 01382860aaee..1e681314e379 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -271,7 +271,7 @@ static struct drm_plane **sun8i_layers_init(struct drm_device *drm,
 		return ERR_PTR(-ENOMEM);
 
 	for (i = 0; i < mixer->cfg->vi_num; i++) {
-		struct sun8i_vi_layer *layer;
+		struct sun8i_layer *layer;
 
 		layer = sun8i_vi_layer_init_one(drm, mixer, i);
 		if (IS_ERR(layer)) {
@@ -284,7 +284,7 @@ static struct drm_plane **sun8i_layers_init(struct drm_device *drm,
 	}
 
 	for (i = 0; i < mixer->cfg->ui_num; i++) {
-		struct sun8i_ui_layer *layer;
+		struct sun8i_layer *layer;
 
 		layer = sun8i_ui_layer_init_one(drm, mixer, i);
 		if (IS_ERR(layer)) {
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.h b/drivers/gpu/drm/sun4i/sun8i_mixer.h
index 85c94884fb9a..5a610ee30301 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
@@ -9,6 +9,7 @@
 #include <linux/clk.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
+#include <drm/drm_plane.h>
 
 #include "sunxi_engine.h"
 
@@ -185,6 +186,19 @@ struct sun8i_mixer {
 	struct clk			*mod_clk;
 };
 
+struct sun8i_layer {
+	struct drm_plane	plane;
+	struct sun8i_mixer	*mixer;
+	int			channel;
+	int			overlay;
+};
+
+static inline struct sun8i_layer *
+plane_to_sun8i_layer(struct drm_plane *plane)
+{
+	return container_of(plane, struct sun8i_layer, plane);
+}
+
 static inline struct sun8i_mixer *
 engine_to_sun8i_mixer(struct sunxi_engine *engine)
 {
diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
index ca75ca0835a6..248fbb606ede 100644
--- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
@@ -232,7 +232,7 @@ static int sun8i_ui_layer_atomic_check(struct drm_plane *plane,
 {
 	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
 										 plane);
-	struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
+	struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
 	struct drm_crtc *crtc = new_plane_state->crtc;
 	struct drm_crtc_state *crtc_state;
 	int min_scale, max_scale;
@@ -264,7 +264,7 @@ static void sun8i_ui_layer_atomic_disable(struct drm_plane *plane,
 {
 	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 									   plane);
-	struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
+	struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
 	unsigned int old_zpos = old_state->normalized_zpos;
 	struct sun8i_mixer *mixer = layer->mixer;
 
@@ -279,7 +279,7 @@ static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
 									   plane);
 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 									   plane);
-	struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
+	struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
 	unsigned int zpos = new_state->normalized_zpos;
 	unsigned int old_zpos = old_state->normalized_zpos;
 	struct sun8i_mixer *mixer = layer->mixer;
@@ -345,13 +345,13 @@ static const uint64_t sun8i_layer_modifiers[] = {
 	DRM_FORMAT_MOD_INVALID
 };
 
-struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
-					       struct sun8i_mixer *mixer,
-					       int index)
+struct sun8i_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
+					    struct sun8i_mixer *mixer,
+					    int index)
 {
 	enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY;
 	int channel = mixer->cfg->vi_num + index;
-	struct sun8i_ui_layer *layer;
+	struct sun8i_layer *layer;
 	unsigned int plane_cnt;
 	int ret;
 
diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.h b/drivers/gpu/drm/sun4i/sun8i_ui_layer.h
index e3e32ee1178d..83892f6ff211 100644
--- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.h
@@ -47,21 +47,9 @@
 #define SUN8I_MIXER_CHAN_UI_LAYER_ATTR_ALPHA_MODE_COMBINED	((2) << 1)
 
 struct sun8i_mixer;
+struct sun8i_layer;
 
-struct sun8i_ui_layer {
-	struct drm_plane	plane;
-	struct sun8i_mixer	*mixer;
-	int			channel;
-	int			overlay;
-};
-
-static inline struct sun8i_ui_layer *
-plane_to_sun8i_ui_layer(struct drm_plane *plane)
-{
-	return container_of(plane, struct sun8i_ui_layer, plane);
-}
-
-struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
-					       struct sun8i_mixer *mixer,
-					       int index);
+struct sun8i_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
+					    struct sun8i_mixer *mixer,
+					    int index);
 #endif /* _SUN8I_UI_LAYER_H_ */
diff --git a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
index f9c0a56d3a14..0c0f1ac80517 100644
--- a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
@@ -366,7 +366,7 @@ static int sun8i_vi_layer_atomic_check(struct drm_plane *plane,
 {
 	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
 										 plane);
-	struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
+	struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
 	struct drm_crtc *crtc = new_plane_state->crtc;
 	struct drm_crtc_state *crtc_state;
 	int min_scale, max_scale;
@@ -398,7 +398,7 @@ static void sun8i_vi_layer_atomic_disable(struct drm_plane *plane,
 {
 	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 									   plane);
-	struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
+	struct sun8i_layer *layer = plane_to_sun8i_vi_layer(plane);
 	unsigned int old_zpos = old_state->normalized_zpos;
 	struct sun8i_mixer *mixer = layer->mixer;
 
@@ -413,7 +413,7 @@ static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
 									   plane);
 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 									   plane);
-	struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
+	struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
 	unsigned int zpos = new_state->normalized_zpos;
 	unsigned int old_zpos = old_state->normalized_zpos;
 	struct sun8i_mixer *mixer = layer->mixer;
@@ -539,14 +539,14 @@ static const uint64_t sun8i_layer_modifiers[] = {
 	DRM_FORMAT_MOD_INVALID
 };
 
-struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
-					       struct sun8i_mixer *mixer,
-					       int index)
+struct sun8i_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
+					    struct sun8i_mixer *mixer,
+					    int index)
 {
 	enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY;
 	u32 supported_encodings, supported_ranges;
 	unsigned int plane_cnt, format_count;
-	struct sun8i_vi_layer *layer;
+	struct sun8i_layer *layer;
 	const u32 *formats;
 	int ret;
 
diff --git a/drivers/gpu/drm/sun4i/sun8i_vi_layer.h b/drivers/gpu/drm/sun4i/sun8i_vi_layer.h
index 48c399e1c86d..655440cdc78f 100644
--- a/drivers/gpu/drm/sun4i/sun8i_vi_layer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_vi_layer.h
@@ -52,21 +52,9 @@
 #define SUN8I_MIXER_CHAN_VI_DS_M(x)			((x) << 0)
 
 struct sun8i_mixer;
+struct sun8i_layer;
 
-struct sun8i_vi_layer {
-	struct drm_plane	plane;
-	struct sun8i_mixer	*mixer;
-	int			channel;
-	int			overlay;
-};
-
-static inline struct sun8i_vi_layer *
-plane_to_sun8i_vi_layer(struct drm_plane *plane)
-{
-	return container_of(plane, struct sun8i_vi_layer, plane);
-}
-
-struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
-					       struct sun8i_mixer *mixer,
-					       int index);
+struct sun8i_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
+					    struct sun8i_mixer *mixer,
+					    int index);
 #endif /* _SUN8I_VI_LAYER_H_ */
-- 
2.44.0

[PATCH v2 2/3] drm/sun4i: Add more parameters to sunxi_engine commit callback

[Ondřej Jirman]

From: Ondrej Jirman <megi@xff.cz>

These will be needed later on when we move layer configuration to
crtc update.

Signed-off-by: Ondrej Jirman <megi@xff.cz>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
 drivers/gpu/drm/sun4i/sun4i_backend.c |  4 +++-
 drivers/gpu/drm/sun4i/sun4i_crtc.c    |  2 +-
 drivers/gpu/drm/sun4i/sun8i_mixer.c   |  5 ++++-
 drivers/gpu/drm/sun4i/sunxi_engine.h  | 13 ++++++++++---
 4 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c
index 335fd0edb904..e89eb96d3131 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -69,7 +69,9 @@ static void sun4i_backend_disable_color_correction(struct sunxi_engine *engine)
 			   SUN4I_BACKEND_OCCTL_ENABLE, 0);
 }
 
-static void sun4i_backend_commit(struct sunxi_engine *engine)
+static void sun4i_backend_commit(struct sunxi_engine *engine,
+				 struct drm_crtc *crtc,
+				 struct drm_atomic_state *state)
 {
 	DRM_DEBUG_DRIVER("Committing changes\n");
 
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index c06d7cd45388..18e74047b0f5 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -91,7 +91,7 @@ static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc,
 
 	DRM_DEBUG_DRIVER("Committing plane changes\n");
 
-	sunxi_engine_commit(scrtc->engine);
+	sunxi_engine_commit(scrtc->engine, crtc, state);
 
 	if (event) {
 		crtc->state->event = NULL;
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 1e681314e379..bdeb9b80e038 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 #include <linux/reset.h>
 
+#include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_framebuffer.h>
@@ -249,7 +250,9 @@ int sun8i_mixer_drm_format_to_hw(u32 format, u32 *hw_format)
 	return -EINVAL;
 }
 
-static void sun8i_mixer_commit(struct sunxi_engine *engine)
+static void sun8i_mixer_commit(struct sunxi_engine *engine,
+			       struct drm_crtc *crtc,
+			       struct drm_atomic_state *state)
 {
 	DRM_DEBUG_DRIVER("Committing changes\n");
 
diff --git a/drivers/gpu/drm/sun4i/sunxi_engine.h b/drivers/gpu/drm/sun4i/sunxi_engine.h
index ec8cf9b2bda4..ec0c4932f15c 100644
--- a/drivers/gpu/drm/sun4i/sunxi_engine.h
+++ b/drivers/gpu/drm/sun4i/sunxi_engine.h
@@ -7,6 +7,7 @@
 #define _SUNXI_ENGINE_H_
 
 struct drm_plane;
+struct drm_crtc;
 struct drm_device;
 struct drm_crtc_state;
 struct drm_display_mode;
@@ -59,7 +60,9 @@ struct sunxi_engine_ops {
 	 *
 	 * This function is optional.
 	 */
-	void (*commit)(struct sunxi_engine *engine);
+	void (*commit)(struct sunxi_engine *engine,
+		       struct drm_crtc *crtc,
+		       struct drm_atomic_state *state);
 
 	/**
 	 * @layers_init:
@@ -144,12 +147,16 @@ struct sunxi_engine {
 /**
  * sunxi_engine_commit() - commit all changes of the engine
  * @engine:	pointer to the engine
+ * @crtc:	pointer to crtc the engine is associated with
+ * @state:	atomic state
  */
 static inline void
-sunxi_engine_commit(struct sunxi_engine *engine)
+sunxi_engine_commit(struct sunxi_engine *engine,
+		    struct drm_crtc *crtc,
+		    struct drm_atomic_state *state)
 {
 	if (engine->ops && engine->ops->commit)
-		engine->ops->commit(engine);
+		engine->ops->commit(engine, crtc, state);
 }
 
 /**
-- 
2.44.0

[PATCH v2 3/3] drm/sun4i: Fix layer zpos change/atomic modesetting

[Ondřej Jirman]

From: Ondrej Jirman <megi@xff.cz>

Identical configurations of planes can lead to different (and wrong)
layer -> pipe routing at HW level, depending on the order of atomic
plane changes.

For example:

- Layer 1 is configured to zpos 0 and thus uses pipe 0. No other layer
  is enabled. This is a typical situation at boot.

- When a compositor takes over and layer 3 is enabled,
  sun8i_ui_layer_enable() will get called with old_zpos=0 zpos=1, which
  will lead to incorrect disabling of pipe 0 and enabling of pipe 1.

What happens is that sun8i_ui_layer_enable() function may disable
blender pipes even if it is no longer assigned to its layer.

To correct this, move the routing setup out of individual plane's
atomic_update into crtc's atomic_update, where it can be calculated
and updated all at once.

Remove the atomic_disable callback because it is no longer needed.

Signed-off-by: Ondrej Jirman <megi@xff.cz>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
 drivers/gpu/drm/sun4i/sun8i_mixer.c    | 61 +++++++++++++++++++++
 drivers/gpu/drm/sun4i/sun8i_mixer.h    |  6 +++
 drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 73 +------------------------
 drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 74 +-------------------------
 4 files changed, 71 insertions(+), 143 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index bdeb9b80e038..bd0fe2c6624e 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -250,12 +250,73 @@ int sun8i_mixer_drm_format_to_hw(u32 format, u32 *hw_format)
 	return -EINVAL;
 }
 
+static void sun8i_layer_enable(struct sun8i_layer *layer, bool enable)
+{
+	u32 ch_base = sun8i_channel_base(layer->mixer, layer->channel);
+	u32 val, reg, mask;
+
+	if (layer->type == SUN8I_LAYER_TYPE_UI) {
+		val = enable ? SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN : 0;
+		mask = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN;
+		reg = SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, layer->overlay);
+	} else {
+		val = enable ? SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN : 0;
+		mask = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN;
+		reg = SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, layer->overlay);
+	}
+
+	regmap_update_bits(layer->mixer->engine.regs, reg, mask, val);
+}
+
 static void sun8i_mixer_commit(struct sunxi_engine *engine,
 			       struct drm_crtc *crtc,
 			       struct drm_atomic_state *state)
 {
+	struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
+	u32 bld_base = sun8i_blender_base(mixer);
+	struct drm_plane_state *plane_state;
+	struct drm_plane *plane;
+	u32 route = 0, pipe_en = 0;
+
 	DRM_DEBUG_DRIVER("Committing changes\n");
 
+	drm_for_each_plane(plane, state->dev) {
+		struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
+		bool enable;
+		int zpos;
+
+		if (!(plane->possible_crtcs & drm_crtc_mask(crtc)) || layer->mixer != mixer)
+			continue;
+
+		plane_state = drm_atomic_get_new_plane_state(state, plane);
+		if (!plane_state)
+			plane_state = plane->state;
+
+		enable = plane_state->crtc && plane_state->visible;
+		zpos = plane_state->normalized_zpos;
+
+		DRM_DEBUG_DRIVER("  plane %d: chan=%d ovl=%d en=%d zpos=%d\n",
+				 plane->base.id, layer->channel, layer->overlay,
+				 enable, zpos);
+
+		/*
+		 * We always update the layer enable bit, because it can clear
+		 * spontaneously for unknown reasons.
+		 */
+		sun8i_layer_enable(layer, enable);
+
+		if (!enable)
+			continue;
+
+		/* Route layer to pipe based on zpos */
+		route |= layer->channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
+		pipe_en |= SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);
+	}
+
+	regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_ROUTE(bld_base), route);
+	regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
+		     pipe_en | SUN8I_MIXER_BLEND_PIPE_CTL_FC_EN(0));
+
 	regmap_write(engine->regs, SUN8I_MIXER_GLOBAL_DBUFF,
 		     SUN8I_MIXER_GLOBAL_DBUFF_ENABLE);
 }
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.h b/drivers/gpu/drm/sun4i/sun8i_mixer.h
index 5a610ee30301..d7898c9c9cc0 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
@@ -186,9 +186,15 @@ struct sun8i_mixer {
 	struct clk			*mod_clk;
 };
 
+enum {
+	SUN8I_LAYER_TYPE_UI,
+	SUN8I_LAYER_TYPE_VI,
+};
+
 struct sun8i_layer {
 	struct drm_plane	plane;
 	struct sun8i_mixer	*mixer;
+	int			type;
 	int			channel;
 	int			overlay;
 };
diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
index 248fbb606ede..b90e5edef4e8 100644
--- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
@@ -24,55 +24,6 @@
 #include "sun8i_ui_layer.h"
 #include "sun8i_ui_scaler.h"
 
-static void sun8i_ui_layer_enable(struct sun8i_mixer *mixer, int channel,
-				  int overlay, bool enable, unsigned int zpos,
-				  unsigned int old_zpos)
-{
-	u32 val, bld_base, ch_base;
-
-	bld_base = sun8i_blender_base(mixer);
-	ch_base = sun8i_channel_base(mixer, channel);
-
-	DRM_DEBUG_DRIVER("%sabling channel %d overlay %d\n",
-			 enable ? "En" : "Dis", channel, overlay);
-
-	if (enable)
-		val = SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN;
-	else
-		val = 0;
-
-	regmap_update_bits(mixer->engine.regs,
-			   SUN8I_MIXER_CHAN_UI_LAYER_ATTR(ch_base, overlay),
-			   SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN, val);
-
-	if (!enable || zpos != old_zpos) {
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
-				   SUN8I_MIXER_BLEND_PIPE_CTL_EN(old_zpos),
-				   0);
-
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_ROUTE(bld_base),
-				   SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(old_zpos),
-				   0);
-	}
-
-	if (enable) {
-		val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);
-
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
-				   val, val);
-
-		val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
-
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_ROUTE(bld_base),
-				   SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos),
-				   val);
-	}
-}
-
 static void sun8i_ui_layer_update_alpha(struct sun8i_mixer *mixer, int channel,
 					int overlay, struct drm_plane *plane)
 {
@@ -259,36 +210,18 @@ static int sun8i_ui_layer_atomic_check(struct drm_plane *plane,
 						   true, true);
 }
 
-static void sun8i_ui_layer_atomic_disable(struct drm_plane *plane,
-					  struct drm_atomic_state *state)
-{
-	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
-									   plane);
-	struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
-	unsigned int old_zpos = old_state->normalized_zpos;
-	struct sun8i_mixer *mixer = layer->mixer;
-
-	sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, false, 0,
-			      old_zpos);
-}
 
 static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
 					 struct drm_atomic_state *state)
 {
-	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
-									   plane);
 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 									   plane);
 	struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
 	unsigned int zpos = new_state->normalized_zpos;
-	unsigned int old_zpos = old_state->normalized_zpos;
 	struct sun8i_mixer *mixer = layer->mixer;
 
-	if (!new_state->visible) {
-		sun8i_ui_layer_enable(mixer, layer->channel,
-				      layer->overlay, false, 0, old_zpos);
+	if (!new_state->crtc || !new_state->visible)
 		return;
-	}
 
 	sun8i_ui_layer_update_coord(mixer, layer->channel,
 				    layer->overlay, plane, zpos);
@@ -298,13 +231,10 @@ static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
 				      layer->overlay, plane);
 	sun8i_ui_layer_update_buffer(mixer, layer->channel,
 				     layer->overlay, plane);
-	sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay,
-			      true, zpos, old_zpos);
 }
 
 static const struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = {
 	.atomic_check	= sun8i_ui_layer_atomic_check,
-	.atomic_disable	= sun8i_ui_layer_atomic_disable,
 	.atomic_update	= sun8i_ui_layer_atomic_update,
 };
 
@@ -390,6 +320,7 @@ struct sun8i_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
 
 	drm_plane_helper_add(&layer->plane, &sun8i_ui_layer_helper_funcs);
 	layer->mixer = mixer;
+	layer->type = SUN8I_LAYER_TYPE_UI;
 	layer->channel = channel;
 	layer->overlay = 0;
 
diff --git a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
index 0c0f1ac80517..9c09d9c08496 100644
--- a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
@@ -18,55 +18,6 @@
 #include "sun8i_vi_layer.h"
 #include "sun8i_vi_scaler.h"
 
-static void sun8i_vi_layer_enable(struct sun8i_mixer *mixer, int channel,
-				  int overlay, bool enable, unsigned int zpos,
-				  unsigned int old_zpos)
-{
-	u32 val, bld_base, ch_base;
-
-	bld_base = sun8i_blender_base(mixer);
-	ch_base = sun8i_channel_base(mixer, channel);
-
-	DRM_DEBUG_DRIVER("%sabling VI channel %d overlay %d\n",
-			 enable ? "En" : "Dis", channel, overlay);
-
-	if (enable)
-		val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN;
-	else
-		val = 0;
-
-	regmap_update_bits(mixer->engine.regs,
-			   SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
-			   SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN, val);
-
-	if (!enable || zpos != old_zpos) {
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
-				   SUN8I_MIXER_BLEND_PIPE_CTL_EN(old_zpos),
-				   0);
-
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_ROUTE(bld_base),
-				   SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(old_zpos),
-				   0);
-	}
-
-	if (enable) {
-		val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);
-
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
-				   val, val);
-
-		val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
-
-		regmap_update_bits(mixer->engine.regs,
-				   SUN8I_MIXER_BLEND_ROUTE(bld_base),
-				   SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos),
-				   val);
-	}
-}
-
 static void sun8i_vi_layer_update_alpha(struct sun8i_mixer *mixer, int channel,
 					int overlay, struct drm_plane *plane)
 {
@@ -393,36 +344,17 @@ static int sun8i_vi_layer_atomic_check(struct drm_plane *plane,
 						   true, true);
 }
 
-static void sun8i_vi_layer_atomic_disable(struct drm_plane *plane,
-					  struct drm_atomic_state *state)
-{
-	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
-									   plane);
-	struct sun8i_layer *layer = plane_to_sun8i_vi_layer(plane);
-	unsigned int old_zpos = old_state->normalized_zpos;
-	struct sun8i_mixer *mixer = layer->mixer;
-
-	sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, false, 0,
-			      old_zpos);
-}
-
 static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
 					 struct drm_atomic_state *state)
 {
-	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
-									   plane);
 	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 									   plane);
 	struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
 	unsigned int zpos = new_state->normalized_zpos;
-	unsigned int old_zpos = old_state->normalized_zpos;
 	struct sun8i_mixer *mixer = layer->mixer;
 
-	if (!new_state->visible) {
-		sun8i_vi_layer_enable(mixer, layer->channel,
-				      layer->overlay, false, 0, old_zpos);
+	if (!new_state->crtc || !new_state->visible)
 		return;
-	}
 
 	sun8i_vi_layer_update_coord(mixer, layer->channel,
 				    layer->overlay, plane, zpos);
@@ -432,13 +364,10 @@ static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
 				      layer->overlay, plane);
 	sun8i_vi_layer_update_buffer(mixer, layer->channel,
 				     layer->overlay, plane);
-	sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay,
-			      true, zpos, old_zpos);
 }
 
 static const struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
 	.atomic_check	= sun8i_vi_layer_atomic_check,
-	.atomic_disable	= sun8i_vi_layer_atomic_disable,
 	.atomic_update	= sun8i_vi_layer_atomic_update,
 };
 
@@ -613,6 +542,7 @@ struct sun8i_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
 
 	drm_plane_helper_add(&layer->plane, &sun8i_vi_layer_helper_funcs);
 	layer->mixer = mixer;
+	layer->type = SUN8I_LAYER_TYPE_VI;
 	layer->channel = index;
 	layer->overlay = 0;
 
-- 
2.44.0

Re: [PATCH v2 0/3] Move blender setup from individual planes to crtc commit in sun4i-drm

[Ondřej Jirman]

Hi,

On Sat, Feb 24, 2024 at 04:05:57PM GMT, megi xff wrote:
> From: Ondrej Jirman <megi@xff.cz>
> 
> This series refactors blender setup from individual planes to a common
> place where it can be performed at once and is easier to reason about.
> 
> In the process this fixes a few bugs that allowed blender pipes to be
> disabled while corresponding DRM planes were requested to be enabled.
> 
> Please take a look. :)
> 
> v2:
> - use regmap_write where possible
> - add review tags

It would be nice to have this applied.

Kind regards,
	o.

> Thank you very much,
> 	Ondřej Jirman
> 
> Ondrej Jirman (3):
>   drm/sun4i: Unify sun8i_*_layer structs
>   drm/sun4i: Add more parameters to sunxi_engine commit callback
>   drm/sun4i: Fix layer zpos change/atomic modesetting
> 
>  drivers/gpu/drm/sun4i/sun4i_backend.c  |  4 +-
>  drivers/gpu/drm/sun4i/sun4i_crtc.c     |  2 +-
>  drivers/gpu/drm/sun4i/sun8i_mixer.c    | 70 ++++++++++++++++++++-
>  drivers/gpu/drm/sun4i/sun8i_mixer.h    | 20 ++++++
>  drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 85 +++----------------------
>  drivers/gpu/drm/sun4i/sun8i_ui_layer.h | 20 ++----
>  drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 86 +++-----------------------
>  drivers/gpu/drm/sun4i/sun8i_vi_layer.h | 20 ++----
>  drivers/gpu/drm/sun4i/sunxi_engine.h   | 13 +++-
>  9 files changed, 125 insertions(+), 195 deletions(-)
> 
> -- 
> 2.44.0
> 

Re: [PATCH v2 0/3] Move blender setup from individual planes to crtc commit in sun4i-drm

[Jernej Škrabec]

Dne petek, 19. april 2024 ob 15:36:17 GMT +2 je Ondřej Jirman napisal(a):
> Hi,
> 
> On Sat, Feb 24, 2024 at 04:05:57PM GMT, megi xff wrote:
> > From: Ondrej Jirman <megi@xff.cz>
> > 
> > This series refactors blender setup from individual planes to a common
> > place where it can be performed at once and is easier to reason about.
> > 
> > In the process this fixes a few bugs that allowed blender pipes to be
> > disabled while corresponding DRM planes were requested to be enabled.
> > 
> > Please take a look. :)
> > 
> > v2:
> > - use regmap_write where possible
> > - add review tags
> 
> It would be nice to have this applied.

Maxime,

do you mind applying?

Best regards,
Jernej

> 
> Kind regards,
> 	o.
> 
> > Thank you very much,
> > 	Ondřej Jirman
> > 
> > Ondrej Jirman (3):
> >   drm/sun4i: Unify sun8i_*_layer structs
> >   drm/sun4i: Add more parameters to sunxi_engine commit callback
> >   drm/sun4i: Fix layer zpos change/atomic modesetting
> > 
> >  drivers/gpu/drm/sun4i/sun4i_backend.c  |  4 +-
> >  drivers/gpu/drm/sun4i/sun4i_crtc.c     |  2 +-
> >  drivers/gpu/drm/sun4i/sun8i_mixer.c    | 70 ++++++++++++++++++++-
> >  drivers/gpu/drm/sun4i/sun8i_mixer.h    | 20 ++++++
> >  drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 85 +++----------------------
> >  drivers/gpu/drm/sun4i/sun8i_ui_layer.h | 20 ++----
> >  drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 86 +++-----------------------
> >  drivers/gpu/drm/sun4i/sun8i_vi_layer.h | 20 ++----
> >  drivers/gpu/drm/sun4i/sunxi_engine.h   | 13 +++-
> >  9 files changed, 125 insertions(+), 195 deletions(-)
> > 
>