From 40bdfb0a4c4cd3f3af19171d31a6a7e8ab0cc1e7 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed, 16 Dec 2015 13:21:42 +0100
Subject: drm/exynos: rename zpos to index

This patch renames zpos entry to index, because in most places it is
used as index for selecting hardware layer/window instead of
configurable layer position. This will later enable to make the zpos
property configurable.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 10 +++++-----
 drivers/gpu/drm/exynos/exynos7_drm_decon.c    | 10 +++++-----
 drivers/gpu/drm/exynos/exynos_drm_drv.h       |  4 ++--
 drivers/gpu/drm/exynos/exynos_drm_fimd.c      | 10 +++++-----
 drivers/gpu/drm/exynos/exynos_drm_plane.c     |  4 ++--
 drivers/gpu/drm/exynos/exynos_drm_plane.h     |  2 +-
 drivers/gpu/drm/exynos/exynos_drm_vidi.c      |  2 +-
 drivers/gpu/drm/exynos/exynos_mixer.c         | 14 +++++++-------
 8 files changed, 28 insertions(+), 28 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index c7362b99ce28..77073d8faaa3 100644
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -256,7 +256,7 @@ static void decon_atomic_begin(struct exynos_drm_crtc *crtc,
 	if (test_bit(BIT_SUSPENDED, &ctx->flags))
 		return;
 
-	decon_shadow_protect_win(ctx, plane->zpos, true);
+	decon_shadow_protect_win(ctx, plane->index, true);
 }
 
 #define BIT_VAL(x, e, s) (((x) & ((1 << ((e) - (s) + 1)) - 1)) << (s))
@@ -270,7 +270,7 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
 				to_exynos_plane_state(plane->base.state);
 	struct decon_context *ctx = crtc->ctx;
 	struct drm_framebuffer *fb = state->base.fb;
-	unsigned int win = plane->zpos;
+	unsigned int win = plane->index;
 	unsigned int bpp = fb->bits_per_pixel >> 3;
 	unsigned int pitch = fb->pitches[0];
 	dma_addr_t dma_addr = exynos_drm_fb_dma_addr(fb, 0);
@@ -320,7 +320,7 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
 				struct exynos_drm_plane *plane)
 {
 	struct decon_context *ctx = crtc->ctx;
-	unsigned int win = plane->zpos;
+	unsigned int win = plane->index;
 
 	if (test_bit(BIT_SUSPENDED, &ctx->flags))
 		return;
@@ -344,7 +344,7 @@ static void decon_atomic_flush(struct exynos_drm_crtc *crtc,
 	if (test_bit(BIT_SUSPENDED, &ctx->flags))
 		return;
 
-	decon_shadow_protect_win(ctx, plane->zpos, false);
+	decon_shadow_protect_win(ctx, plane->index, false);
 
 	if (ctx->out_type == IFTYPE_I80)
 		set_bit(BIT_WIN_UPDATED, &ctx->flags);
@@ -502,7 +502,7 @@ static int decon_bind(struct device *dev, struct device *master, void *data)
 		ctx->configs[win].zpos = win;
 		ctx->configs[win].type = decon_win_types[tmp];
 
-		ret = exynos_plane_init(drm_dev, &ctx->planes[win],
+		ret = exynos_plane_init(drm_dev, &ctx->planes[win], win,
 					1 << ctx->pipe, &ctx->configs[win]);
 		if (ret)
 			return ret;
diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
index c47f9af8170b..8911f965b06c 100644
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
@@ -393,7 +393,7 @@ static void decon_atomic_begin(struct exynos_drm_crtc *crtc,
 	if (ctx->suspended)
 		return;
 
-	decon_shadow_protect_win(ctx, plane->zpos, true);
+	decon_shadow_protect_win(ctx, plane->index, true);
 }
 
 static void decon_update_plane(struct exynos_drm_crtc *crtc,
@@ -407,7 +407,7 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
 	unsigned long val, alpha;
 	unsigned int last_x;
 	unsigned int last_y;
-	unsigned int win = plane->zpos;
+	unsigned int win = plane->index;
 	unsigned int bpp = fb->bits_per_pixel >> 3;
 	unsigned int pitch = fb->pitches[0];
 
@@ -498,7 +498,7 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
 				struct exynos_drm_plane *plane)
 {
 	struct decon_context *ctx = crtc->ctx;
-	unsigned int win = plane->zpos;
+	unsigned int win = plane->index;
 	u32 val;
 
 	if (ctx->suspended)
@@ -525,7 +525,7 @@ static void decon_atomic_flush(struct exynos_drm_crtc *crtc,
 	if (ctx->suspended)
 		return;
 
-	decon_shadow_protect_win(ctx, plane->zpos, false);
+	decon_shadow_protect_win(ctx, plane->index, false);
 }
 
 static void decon_init(struct decon_context *ctx)
@@ -657,7 +657,7 @@ static int decon_bind(struct device *dev, struct device *master, void *data)
 		ctx->configs[i].zpos = i;
 		ctx->configs[i].type = decon_win_types[i];
 
-		ret = exynos_plane_init(drm_dev, &ctx->planes[i],
+		ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
 					1 << ctx->pipe, &ctx->configs[i]);
 		if (ret)
 			return ret;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 82bbd7f4b316..588b6763f9c7 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -76,7 +76,7 @@ to_exynos_plane_state(struct drm_plane_state *state)
  * Exynos drm common overlay structure.
  *
  * @base: plane object
- * @zpos: order of overlay layer(z position).
+ * @index: hardware index of the overlay layer
  *
  * this structure is common to exynos SoC and its contents would be copied
  * to hardware specific overlay info.
@@ -85,7 +85,7 @@ to_exynos_plane_state(struct drm_plane_state *state)
 struct exynos_drm_plane {
 	struct drm_plane base;
 	const struct exynos_drm_plane_config *config;
-	unsigned int zpos;
+	unsigned int index;
 	struct drm_framebuffer *pending_fb;
 };
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 2e2247126581..6ae1b1e55783 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -630,7 +630,7 @@ static void fimd_atomic_begin(struct exynos_drm_crtc *crtc,
 	if (ctx->suspended)
 		return;
 
-	fimd_shadow_protect_win(ctx, plane->zpos, true);
+	fimd_shadow_protect_win(ctx, plane->index, true);
 }
 
 static void fimd_atomic_flush(struct exynos_drm_crtc *crtc,
@@ -641,7 +641,7 @@ static void fimd_atomic_flush(struct exynos_drm_crtc *crtc,
 	if (ctx->suspended)
 		return;
 
-	fimd_shadow_protect_win(ctx, plane->zpos, false);
+	fimd_shadow_protect_win(ctx, plane->index, false);
 }
 
 static void fimd_update_plane(struct exynos_drm_crtc *crtc,
@@ -654,7 +654,7 @@ static void fimd_update_plane(struct exynos_drm_crtc *crtc,
 	dma_addr_t dma_addr;
 	unsigned long val, size, offset;
 	unsigned int last_x, last_y, buf_offsize, line_size;
-	unsigned int win = plane->zpos;
+	unsigned int win = plane->index;
 	unsigned int bpp = fb->bits_per_pixel >> 3;
 	unsigned int pitch = fb->pitches[0];
 
@@ -740,7 +740,7 @@ static void fimd_disable_plane(struct exynos_drm_crtc *crtc,
 			       struct exynos_drm_plane *plane)
 {
 	struct fimd_context *ctx = crtc->ctx;
-	unsigned int win = plane->zpos;
+	unsigned int win = plane->index;
 
 	if (ctx->suspended)
 		return;
@@ -944,7 +944,7 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
 		ctx->configs[i].num_pixel_formats = ARRAY_SIZE(fimd_formats);
 		ctx->configs[i].zpos = i;
 		ctx->configs[i].type = fimd_win_types[i];
-		ret = exynos_plane_init(drm_dev, &ctx->planes[i],
+		ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
 					1 << ctx->pipe, &ctx->configs[i]);
 		if (ret)
 			return ret;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index e668fcdbcafc..e45730ad67f2 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -280,7 +280,7 @@ static void exynos_plane_attach_zpos_property(struct drm_plane *plane,
 
 int exynos_plane_init(struct drm_device *dev,
 		      struct exynos_drm_plane *exynos_plane,
-		      unsigned long possible_crtcs,
+		      unsigned int index, unsigned long possible_crtcs,
 		      const struct exynos_drm_plane_config *config)
 {
 	int err;
@@ -298,7 +298,7 @@ int exynos_plane_init(struct drm_device *dev,
 
 	drm_plane_helper_add(&exynos_plane->base, &plane_helper_funcs);
 
-	exynos_plane->zpos = config->zpos;
+	exynos_plane->index = index;
 	exynos_plane->config = config;
 
 	if (config->type == DRM_PLANE_TYPE_OVERLAY)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.h b/drivers/gpu/drm/exynos/exynos_drm_plane.h
index 0dd096548284..9aafad164cdf 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.h
@@ -10,6 +10,6 @@
  */
 
 int exynos_plane_init(struct drm_device *dev,
-		      struct exynos_drm_plane *exynos_plane,
+		      struct exynos_drm_plane *exynos_plane, unsigned int index,
 		      unsigned long possible_crtcs,
 		      const struct exynos_drm_plane_config *config);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 0be29c1b2c05..62ac4e5fa51d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -461,7 +461,7 @@ static int vidi_bind(struct device *dev, struct device *master, void *data)
 		plane_config.zpos = i;
 		plane_config.type = vidi_win_types[i];
 
-		ret = exynos_plane_init(drm_dev, &ctx->planes[i],
+		ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
 					1 << ctx->pipe, &plane_config);
 		if (ret)
 			return ret;
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index dfb35e2da4db..0dceeb2b532c 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -511,7 +511,7 @@ static void vp_video_buffer(struct mixer_context *ctx,
 
 	mixer_cfg_scan(ctx, mode->vdisplay);
 	mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
-	mixer_cfg_layer(ctx, plane->zpos, true);
+	mixer_cfg_layer(ctx, plane->index, true);
 	mixer_run(ctx);
 
 	mixer_vsync_set_update(ctx, true);
@@ -537,7 +537,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
 	struct mixer_resources *res = &ctx->mixer_res;
 	struct drm_framebuffer *fb = state->base.fb;
 	unsigned long flags;
-	unsigned int win = plane->zpos;
+	unsigned int win = plane->index;
 	unsigned int x_ratio = 0, y_ratio = 0;
 	unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
 	dma_addr_t dma_addr;
@@ -956,12 +956,12 @@ static void mixer_update_plane(struct exynos_drm_crtc *crtc,
 {
 	struct mixer_context *mixer_ctx = crtc->ctx;
 
-	DRM_DEBUG_KMS("win: %d\n", plane->zpos);
+	DRM_DEBUG_KMS("win: %d\n", plane->index);
 
 	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 		return;
 
-	if (plane->zpos > 1 && mixer_ctx->vp_enabled)
+	if (plane->index > 1 && mixer_ctx->vp_enabled)
 		vp_video_buffer(mixer_ctx, plane);
 	else
 		mixer_graph_buffer(mixer_ctx, plane);
@@ -974,7 +974,7 @@ static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
 	struct mixer_resources *res = &mixer_ctx->mixer_res;
 	unsigned long flags;
 
-	DRM_DEBUG_KMS("win: %d\n", plane->zpos);
+	DRM_DEBUG_KMS("win: %d\n", plane->index);
 
 	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 		return;
@@ -982,7 +982,7 @@ static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
 	spin_lock_irqsave(&res->reg_slock, flags);
 	mixer_vsync_set_update(mixer_ctx, false);
 
-	mixer_cfg_layer(mixer_ctx, plane->zpos, false);
+	mixer_cfg_layer(mixer_ctx, plane->index, false);
 
 	mixer_vsync_set_update(mixer_ctx, true);
 	spin_unlock_irqrestore(&res->reg_slock, flags);
@@ -1160,7 +1160,7 @@ static int mixer_bind(struct device *dev, struct device *manager, void *data)
 		if (i == VP_DEFAULT_WIN && !ctx->vp_enabled)
 			continue;
 
-		ret = exynos_plane_init(drm_dev, &ctx->planes[i],
+		ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
 					1 << ctx->pipe, &plane_configs[i]);
 		if (ret)
 			return ret;
-- 
cgit v1.2.3


From 0ea724056262c2e29ac88c73bdf663412fed1ec3 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed, 16 Dec 2015 13:21:43 +0100
Subject: drm/exynos: make zpos property configurable

This patch adds all infrastructure to make zpos plane property
configurable from userspace.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_drv.h   |  4 ++-
 drivers/gpu/drm/exynos/exynos_drm_plane.c | 51 ++++++++++++++++++++++++++++---
 2 files changed, 49 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 588b6763f9c7..f0827dbebb7d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -64,6 +64,7 @@ struct exynos_drm_plane_state {
 	struct exynos_drm_rect src;
 	unsigned int h_ratio;
 	unsigned int v_ratio;
+	unsigned int zpos;
 };
 
 static inline struct exynos_drm_plane_state *
@@ -91,11 +92,12 @@ struct exynos_drm_plane {
 
 #define EXYNOS_DRM_PLANE_CAP_DOUBLE	(1 << 0)
 #define EXYNOS_DRM_PLANE_CAP_SCALE	(1 << 1)
+#define EXYNOS_DRM_PLANE_CAP_ZPOS	(1 << 2)
 
 /*
  * Exynos DRM plane configuration structure.
  *
- * @zpos: z-position of the plane.
+ * @zpos: initial z-position of the plane.
  * @type: type of the plane (primary, cursor or overlay).
  * @pixel_formats: supported pixel formats.
  * @num_pixel_formats: number of elements in 'pixel_formats'.
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index e45730ad67f2..d86227236f55 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -124,6 +124,7 @@ static void exynos_plane_mode_set(struct exynos_drm_plane_state *exynos_state)
 
 static void exynos_drm_plane_reset(struct drm_plane *plane)
 {
+	struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
 	struct exynos_drm_plane_state *exynos_state;
 
 	if (plane->state) {
@@ -136,6 +137,7 @@ static void exynos_drm_plane_reset(struct drm_plane *plane)
 
 	exynos_state = kzalloc(sizeof(*exynos_state), GFP_KERNEL);
 	if (exynos_state) {
+		exynos_state->zpos = exynos_plane->config->zpos;
 		plane->state = &exynos_state->base;
 		plane->state->plane = plane;
 	}
@@ -153,6 +155,7 @@ exynos_drm_plane_duplicate_state(struct drm_plane *plane)
 		return NULL;
 
 	__drm_atomic_helper_plane_duplicate_state(plane, &copy->base);
+	copy->zpos = exynos_state->zpos;
 	return &copy->base;
 }
 
@@ -165,13 +168,53 @@ static void exynos_drm_plane_destroy_state(struct drm_plane *plane,
 	kfree(old_exynos_state);
 }
 
+static int exynos_drm_plane_atomic_set_property(struct drm_plane *plane,
+						struct drm_plane_state *state,
+						struct drm_property *property,
+						uint64_t val)
+{
+	struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
+	struct exynos_drm_plane_state *exynos_state =
+					to_exynos_plane_state(state);
+	struct exynos_drm_private *dev_priv = plane->dev->dev_private;
+	const struct exynos_drm_plane_config *config = exynos_plane->config;
+
+	if (property == dev_priv->plane_zpos_property &&
+	    (config->capabilities & EXYNOS_DRM_PLANE_CAP_ZPOS))
+		exynos_state->zpos = val;
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+static int exynos_drm_plane_atomic_get_property(struct drm_plane *plane,
+					  const struct drm_plane_state *state,
+					  struct drm_property *property,
+					  uint64_t *val)
+{
+	const struct exynos_drm_plane_state *exynos_state =
+		container_of(state, const struct exynos_drm_plane_state, base);
+	struct exynos_drm_private *dev_priv = plane->dev->dev_private;
+
+	if (property == dev_priv->plane_zpos_property)
+		*val = exynos_state->zpos;
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
 static struct drm_plane_funcs exynos_plane_funcs = {
 	.update_plane	= drm_atomic_helper_update_plane,
 	.disable_plane	= drm_atomic_helper_disable_plane,
 	.destroy	= drm_plane_cleanup,
+	.set_property	= drm_atomic_helper_plane_set_property,
 	.reset		= exynos_drm_plane_reset,
 	.atomic_duplicate_state = exynos_drm_plane_duplicate_state,
 	.atomic_destroy_state = exynos_drm_plane_destroy_state,
+	.atomic_set_property = exynos_drm_plane_atomic_set_property,
+	.atomic_get_property = exynos_drm_plane_atomic_get_property,
 };
 
 static int
@@ -267,8 +310,8 @@ static void exynos_plane_attach_zpos_property(struct drm_plane *plane,
 
 	prop = dev_priv->plane_zpos_property;
 	if (!prop) {
-		prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE,
-						 "zpos", 0, MAX_PLANE - 1);
+		prop = drm_property_create_range(dev, 0, "zpos",
+						 0, MAX_PLANE - 1);
 		if (!prop)
 			return;
 
@@ -301,9 +344,7 @@ int exynos_plane_init(struct drm_device *dev,
 	exynos_plane->index = index;
 	exynos_plane->config = config;
 
-	if (config->type == DRM_PLANE_TYPE_OVERLAY)
-		exynos_plane_attach_zpos_property(&exynos_plane->base,
-						  config->zpos);
+	exynos_plane_attach_zpos_property(&exynos_plane->base, config->zpos);
 
 	return 0;
 }
-- 
cgit v1.2.3


From a2cb911eb663b5820dab89f21ce698d68e7cc568 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed, 16 Dec 2015 13:21:44 +0100
Subject: drm/exynos: mixer: set window priority based on zpos

'zpos' plane property is configurable, so adjust hardware layers
priority based on the zpos value. 'zpos' value shifted by one can be
used directly as hw priority value and stored to the registers, because
mixer accepts priority values from 1 to 15 (0 means that layer is
disabled).

This patch also changes the default layer priority to match already
exposed initial zpos values. The initial configuration is now:
[top] video > gfx layer1 > gfx layer0 [bottom].

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_mixer.c | 39 +++++++++++++++++++----------------
 drivers/gpu/drm/exynos/regs-mixer.h   |  3 +++
 2 files changed, 24 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 0dceeb2b532c..c0d128bc084b 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -117,19 +117,22 @@ static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
 		.type = DRM_PLANE_TYPE_PRIMARY,
 		.pixel_formats = mixer_formats,
 		.num_pixel_formats = ARRAY_SIZE(mixer_formats),
-		.capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE,
+		.capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
+				EXYNOS_DRM_PLANE_CAP_ZPOS,
 	}, {
 		.zpos = 1,
 		.type = DRM_PLANE_TYPE_CURSOR,
 		.pixel_formats = mixer_formats,
 		.num_pixel_formats = ARRAY_SIZE(mixer_formats),
-		.capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE,
+		.capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
+				EXYNOS_DRM_PLANE_CAP_ZPOS,
 	}, {
 		.zpos = 2,
 		.type = DRM_PLANE_TYPE_OVERLAY,
 		.pixel_formats = vp_formats,
 		.num_pixel_formats = ARRAY_SIZE(vp_formats),
-		.capabilities = EXYNOS_DRM_PLANE_CAP_SCALE,
+		.capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
+				EXYNOS_DRM_PLANE_CAP_ZPOS,
 	},
 };
 
@@ -372,7 +375,7 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
 }
 
 static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
-				bool enable)
+			    unsigned int priority, bool enable)
 {
 	struct mixer_resources *res = &ctx->mixer_res;
 	u32 val = enable ? ~0 : 0;
@@ -380,15 +383,24 @@ static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
 	switch (win) {
 	case 0:
 		mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
+		mixer_reg_writemask(res, MXR_LAYER_CFG,
+				    MXR_LAYER_CFG_GRP0_VAL(priority),
+				    MXR_LAYER_CFG_GRP0_MASK);
 		break;
 	case 1:
 		mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
+		mixer_reg_writemask(res, MXR_LAYER_CFG,
+				    MXR_LAYER_CFG_GRP1_VAL(priority),
+				    MXR_LAYER_CFG_GRP1_MASK);
 		break;
 	case 2:
 		if (ctx->vp_enabled) {
 			vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
 			mixer_reg_writemask(res, MXR_CFG, val,
 				MXR_CFG_VP_ENABLE);
+			mixer_reg_writemask(res, MXR_LAYER_CFG,
+					    MXR_LAYER_CFG_VP_VAL(priority),
+					    MXR_LAYER_CFG_VP_MASK);
 
 			/* control blending of graphic layer 0 */
 			mixer_reg_writemask(res, MXR_GRAPHIC_CFG(0), val,
@@ -511,7 +523,7 @@ static void vp_video_buffer(struct mixer_context *ctx,
 
 	mixer_cfg_scan(ctx, mode->vdisplay);
 	mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
-	mixer_cfg_layer(ctx, plane->index, true);
+	mixer_cfg_layer(ctx, plane->index, state->zpos + 1, true);
 	mixer_run(ctx);
 
 	mixer_vsync_set_update(ctx, true);
@@ -626,7 +638,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
 
 	mixer_cfg_scan(ctx, mode->vdisplay);
 	mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
-	mixer_cfg_layer(ctx, win, true);
+	mixer_cfg_layer(ctx, win, state->zpos + 1, true);
 
 	/* layer update mandatory for mixer 16.0.33.0 */
 	if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
@@ -674,17 +686,8 @@ static void mixer_win_reset(struct mixer_context *ctx)
 	mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
 		MXR_STATUS_BURST_MASK);
 
-	/* setting default layer priority: layer1 > layer0 > video
-	 * because typical usage scenario would be
-	 * layer1 - OSD
-	 * layer0 - framebuffer
-	 * video - video overlay
-	 */
-	val = MXR_LAYER_CFG_GRP1_VAL(3);
-	val |= MXR_LAYER_CFG_GRP0_VAL(2);
-	if (ctx->vp_enabled)
-		val |= MXR_LAYER_CFG_VP_VAL(1);
-	mixer_reg_write(res, MXR_LAYER_CFG, val);
+	/* reset default layer priority */
+	mixer_reg_write(res, MXR_LAYER_CFG, 0);
 
 	/* setting background color */
 	mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
@@ -982,7 +985,7 @@ static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
 	spin_lock_irqsave(&res->reg_slock, flags);
 	mixer_vsync_set_update(mixer_ctx, false);
 
-	mixer_cfg_layer(mixer_ctx, plane->index, false);
+	mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
 
 	mixer_vsync_set_update(mixer_ctx, true);
 	spin_unlock_irqrestore(&res->reg_slock, flags);
diff --git a/drivers/gpu/drm/exynos/regs-mixer.h b/drivers/gpu/drm/exynos/regs-mixer.h
index ac60260c2389..dbdbc0af3358 100644
--- a/drivers/gpu/drm/exynos/regs-mixer.h
+++ b/drivers/gpu/drm/exynos/regs-mixer.h
@@ -145,8 +145,11 @@
 
 /* bit for MXR_LAYER_CFG */
 #define MXR_LAYER_CFG_GRP1_VAL(x)	MXR_MASK_VAL(x, 11, 8)
+#define MXR_LAYER_CFG_GRP1_MASK		MXR_LAYER_CFG_GRP1_VAL(~0)
 #define MXR_LAYER_CFG_GRP0_VAL(x)	MXR_MASK_VAL(x, 7, 4)
+#define MXR_LAYER_CFG_GRP0_MASK		MXR_LAYER_CFG_GRP0_VAL(~0)
 #define MXR_LAYER_CFG_VP_VAL(x)		MXR_MASK_VAL(x, 3, 0)
+#define MXR_LAYER_CFG_VP_MASK		MXR_LAYER_CFG_VP_VAL(~0)
 
 #endif /* SAMSUNG_REGS_MIXER_H */
 
-- 
cgit v1.2.3


From 5bec01934a23bccfeaa22bf049af134ea80bd3b4 Mon Sep 17 00:00:00 2001
From: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Date: Wed, 16 Dec 2015 13:21:45 +0100
Subject: drm/exynos: mixer: remove all static blending setup

Previously blending setup was static and most of it was
done in mixer_win_reset().

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_mixer.c | 23 -----------------------
 1 file changed, 23 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index c0d128bc084b..c572e271579e 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -401,11 +401,6 @@ static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
 			mixer_reg_writemask(res, MXR_LAYER_CFG,
 					    MXR_LAYER_CFG_VP_VAL(priority),
 					    MXR_LAYER_CFG_VP_MASK);
-
-			/* control blending of graphic layer 0 */
-			mixer_reg_writemask(res, MXR_GRAPHIC_CFG(0), val,
-					MXR_GRP_CFG_BLEND_PRE_MUL |
-					MXR_GRP_CFG_PIXEL_BLEND_EN);
 		}
 		break;
 	}
@@ -672,7 +667,6 @@ static void mixer_win_reset(struct mixer_context *ctx)
 {
 	struct mixer_resources *res = &ctx->mixer_res;
 	unsigned long flags;
-	u32 val; /* value stored to register */
 
 	spin_lock_irqsave(&res->reg_slock, flags);
 	mixer_vsync_set_update(ctx, false);
@@ -694,23 +688,6 @@ static void mixer_win_reset(struct mixer_context *ctx)
 	mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
 	mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
 
-	/* setting graphical layers */
-	val  = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
-	val |= MXR_GRP_CFG_WIN_BLEND_EN;
-	val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
-
-	/* Don't blend layer 0 onto the mixer background */
-	mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val);
-
-	/* Blend layer 1 into layer 0 */
-	val |= MXR_GRP_CFG_BLEND_PRE_MUL;
-	val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
-	mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
-
-	/* setting video layers */
-	val = MXR_GRP_CFG_ALPHA_VAL(0);
-	mixer_reg_write(res, MXR_VIDEO_CFG, val);
-
 	if (ctx->vp_enabled) {
 		/* configuration of Video Processor Registers */
 		vp_win_reset(ctx);
-- 
cgit v1.2.3


From f657a9962070ae2502fcedf2c6568c393039d4c2 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed, 16 Dec 2015 13:21:46 +0100
Subject: drm/exynos: mixer: refactor layer setup

Properly configure blending properties of given hardware layer based on
the selected pixel format. Currently only per-pixel-based alpha is possible
when respective pixel format has been selected. Configuration of global,
per-plane alpha value, color key and background color will be added later.

This patch is heavily inspired by earlier work done by Tobias Jakobi
<tjakobi@math.uni-bielefeld.de>.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_mixer.c | 43 +++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/exynos/regs-mixer.h   |  1 +
 2 files changed, 44 insertions(+)

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index c572e271579e..ae7b122274ac 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -165,6 +165,16 @@ static const u8 filter_cr_horiz_tap4[] = {
 	70,	59,	48,	37,	27,	19,	11,	5,
 };
 
+static inline bool is_alpha_format(unsigned int pixel_format)
+{
+	switch (pixel_format) {
+	case DRM_FORMAT_ARGB8888:
+		return true;
+	default:
+		return false;
+	}
+}
+
 static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
 {
 	return readl(res->vp_regs + reg_id);
@@ -294,6 +304,37 @@ static void vp_default_filter(struct mixer_resources *res)
 		filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
 }
 
+static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
+				bool alpha)
+{
+	struct mixer_resources *res = &ctx->mixer_res;
+	u32 val;
+
+	val  = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
+	if (alpha) {
+		/* blending based on pixel alpha */
+		val |= MXR_GRP_CFG_BLEND_PRE_MUL;
+		val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
+	}
+	mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
+			    val, MXR_GRP_CFG_MISC_MASK);
+}
+
+static void mixer_cfg_vp_blend(struct mixer_context *ctx)
+{
+	struct mixer_resources *res = &ctx->mixer_res;
+	u32 val;
+
+	/*
+	 * No blending at the moment since the NV12/NV21 pixelformats don't
+	 * have an alpha channel. However the mixer supports a global alpha
+	 * value for a layer. Once this functionality is exposed, we can
+	 * support blending of the video layer through this.
+	 */
+	val = 0;
+	mixer_reg_write(res, MXR_VIDEO_CFG, val);
+}
+
 static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
 {
 	struct mixer_resources *res = &ctx->mixer_res;
@@ -519,6 +560,7 @@ static void vp_video_buffer(struct mixer_context *ctx,
 	mixer_cfg_scan(ctx, mode->vdisplay);
 	mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
 	mixer_cfg_layer(ctx, plane->index, state->zpos + 1, true);
+	mixer_cfg_vp_blend(ctx);
 	mixer_run(ctx);
 
 	mixer_vsync_set_update(ctx, true);
@@ -634,6 +676,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
 	mixer_cfg_scan(ctx, mode->vdisplay);
 	mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
 	mixer_cfg_layer(ctx, win, state->zpos + 1, true);
+	mixer_cfg_gfx_blend(ctx, win, is_alpha_format(fb->pixel_format));
 
 	/* layer update mandatory for mixer 16.0.33.0 */
 	if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
diff --git a/drivers/gpu/drm/exynos/regs-mixer.h b/drivers/gpu/drm/exynos/regs-mixer.h
index dbdbc0af3358..7f22df5bf707 100644
--- a/drivers/gpu/drm/exynos/regs-mixer.h
+++ b/drivers/gpu/drm/exynos/regs-mixer.h
@@ -113,6 +113,7 @@
 #define MXR_GRP_CFG_BLEND_PRE_MUL	(1 << 20)
 #define MXR_GRP_CFG_WIN_BLEND_EN	(1 << 17)
 #define MXR_GRP_CFG_PIXEL_BLEND_EN	(1 << 16)
+#define MXR_GRP_CFG_MISC_MASK		((3 << 16) | (3 << 20))
 #define MXR_GRP_CFG_FORMAT_VAL(x)	MXR_MASK_VAL(x, 11, 8)
 #define MXR_GRP_CFG_FORMAT_MASK		MXR_GRP_CFG_FORMAT_VAL(~0)
 #define MXR_GRP_CFG_ALPHA_VAL(x)	MXR_MASK_VAL(x, 7, 0)
-- 
cgit v1.2.3


From 26a7af3ed8a59c27ce125e7619272ca45630d000 Mon Sep 17 00:00:00 2001
From: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Date: Wed, 16 Dec 2015 13:21:47 +0100
Subject: drm/exynos: mixer: also allow ARGB1555 and ARGB4444

Allow the remaining alpha formats now that blending
is properly setup.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_mixer.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index ae7b122274ac..31a9a228744e 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -76,7 +76,9 @@ enum mixer_flag_bits {
 
 static const uint32_t mixer_formats[] = {
 	DRM_FORMAT_XRGB4444,
+	DRM_FORMAT_ARGB4444,
 	DRM_FORMAT_XRGB1555,
+	DRM_FORMAT_ARGB1555,
 	DRM_FORMAT_RGB565,
 	DRM_FORMAT_XRGB8888,
 	DRM_FORMAT_ARGB8888,
@@ -169,6 +171,8 @@ static inline bool is_alpha_format(unsigned int pixel_format)
 {
 	switch (pixel_format) {
 	case DRM_FORMAT_ARGB8888:
+	case DRM_FORMAT_ARGB1555:
+	case DRM_FORMAT_ARGB4444:
 		return true;
 	default:
 		return false;
@@ -595,10 +599,12 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
 
 	switch (fb->pixel_format) {
 	case DRM_FORMAT_XRGB4444:
+	case DRM_FORMAT_ARGB4444:
 		fmt = MXR_FORMAT_ARGB4444;
 		break;
 
 	case DRM_FORMAT_XRGB1555:
+	case DRM_FORMAT_ARGB1555:
 		fmt = MXR_FORMAT_ARGB1555;
 		break;
 
-- 
cgit v1.2.3


From 5e68fef24fab07f4decc78d421838eb73b7e3931 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed, 16 Dec 2015 13:21:48 +0100
Subject: drm/exynos: mixer: unify a check for video-processor window

Always use macro instead of hard-coded '2' value in conditions related
to video processor window. Additional checks are not needed, because
video layer is registered only when video processor is available.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_mixer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 31a9a228744e..bf148dc3623c 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -438,7 +438,7 @@ static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
 				    MXR_LAYER_CFG_GRP1_VAL(priority),
 				    MXR_LAYER_CFG_GRP1_MASK);
 		break;
-	case 2:
+	case VP_DEFAULT_WIN:
 		if (ctx->vp_enabled) {
 			vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
 			mixer_reg_writemask(res, MXR_CFG, val,
@@ -990,7 +990,7 @@ static void mixer_update_plane(struct exynos_drm_crtc *crtc,
 	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
 		return;
 
-	if (plane->index > 1 && mixer_ctx->vp_enabled)
+	if (plane->index == VP_DEFAULT_WIN)
 		vp_video_buffer(mixer_ctx, plane);
 	else
 		mixer_graph_buffer(mixer_ctx, plane);
-- 
cgit v1.2.3


From d29c2c140787a1645306a11799e33adddf72e64f Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Tue, 5 Jan 2016 13:52:51 +0100
Subject: drm/exynos: crtc: rework atomic_{begin,flush}

Some CRTC drivers (like Exynos DRM Mixer) can handle blocking register
updates only on per-device level, not per-plane level. This patch changes
exynos_crts atomic_begin/atomic_flush callbacks to handle the entire crtc,
instead of given planes, so driver can handle both cases on their own.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 14 ++++++++------
 drivers/gpu/drm/exynos/exynos7_drm_decon.c    | 14 ++++++++------
 drivers/gpu/drm/exynos/exynos_drm_crtc.c      | 20 ++++----------------
 drivers/gpu/drm/exynos/exynos_drm_drv.h       | 10 ++++------
 drivers/gpu/drm/exynos/exynos_drm_fimd.c      | 14 ++++++++------
 5 files changed, 32 insertions(+), 40 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index 77073d8faaa3..1bf6a21130c7 100644
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -248,15 +248,16 @@ static void decon_shadow_protect_win(struct decon_context *ctx, int win,
 		       protect ? ~0 : 0);
 }
 
-static void decon_atomic_begin(struct exynos_drm_crtc *crtc,
-					struct exynos_drm_plane *plane)
+static void decon_atomic_begin(struct exynos_drm_crtc *crtc)
 {
 	struct decon_context *ctx = crtc->ctx;
+	int i;
 
 	if (test_bit(BIT_SUSPENDED, &ctx->flags))
 		return;
 
-	decon_shadow_protect_win(ctx, plane->index, true);
+	for (i = ctx->first_win; i < WINDOWS_NR; i++)
+		decon_shadow_protect_win(ctx, i, true);
 }
 
 #define BIT_VAL(x, e, s) (((x) & ((1 << ((e) - (s) + 1)) - 1)) << (s))
@@ -336,15 +337,16 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
 	decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
 }
 
-static void decon_atomic_flush(struct exynos_drm_crtc *crtc,
-				struct exynos_drm_plane *plane)
+static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
 {
 	struct decon_context *ctx = crtc->ctx;
+	int i;
 
 	if (test_bit(BIT_SUSPENDED, &ctx->flags))
 		return;
 
-	decon_shadow_protect_win(ctx, plane->index, false);
+	for (i = ctx->first_win; i < WINDOWS_NR; i++)
+		decon_shadow_protect_win(ctx, i, false);
 
 	if (ctx->out_type == IFTYPE_I80)
 		set_bit(BIT_WIN_UPDATED, &ctx->flags);
diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
index 8911f965b06c..52bda3b42fe0 100644
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
@@ -385,15 +385,16 @@ static void decon_shadow_protect_win(struct decon_context *ctx,
 	writel(val, ctx->regs + SHADOWCON);
 }
 
-static void decon_atomic_begin(struct exynos_drm_crtc *crtc,
-					struct exynos_drm_plane *plane)
+static void decon_atomic_begin(struct exynos_drm_crtc *crtc)
 {
 	struct decon_context *ctx = crtc->ctx;
+	int i;
 
 	if (ctx->suspended)
 		return;
 
-	decon_shadow_protect_win(ctx, plane->index, true);
+	for (i = 0; i < WINDOWS_NR; i++)
+		decon_shadow_protect_win(ctx, i, true);
 }
 
 static void decon_update_plane(struct exynos_drm_crtc *crtc,
@@ -517,15 +518,16 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
 	writel(val, ctx->regs + DECON_UPDATE);
 }
 
-static void decon_atomic_flush(struct exynos_drm_crtc *crtc,
-					struct exynos_drm_plane *plane)
+static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
 {
 	struct decon_context *ctx = crtc->ctx;
+	int i;
 
 	if (ctx->suspended)
 		return;
 
-	decon_shadow_protect_win(ctx, plane->index, false);
+	for (i = 0; i < WINDOWS_NR; i++)
+		decon_shadow_protect_win(ctx, i, false);
 }
 
 static void decon_init(struct decon_context *ctx)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 8f5ac535d809..5acaecba450a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -68,32 +68,20 @@ static void exynos_crtc_atomic_begin(struct drm_crtc *crtc,
 				     struct drm_crtc_state *old_crtc_state)
 {
 	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
-	struct drm_plane *plane;
 
 	exynos_crtc->event = crtc->state->event;
 
-	drm_atomic_crtc_for_each_plane(plane, crtc) {
-		struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
-
-		if (exynos_crtc->ops->atomic_begin)
-			exynos_crtc->ops->atomic_begin(exynos_crtc,
-							exynos_plane);
-	}
+	if (exynos_crtc->ops->atomic_begin)
+		exynos_crtc->ops->atomic_begin(exynos_crtc);
 }
 
 static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
 				     struct drm_crtc_state *old_crtc_state)
 {
 	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
-	struct drm_plane *plane;
 
-	drm_atomic_crtc_for_each_plane(plane, crtc) {
-		struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
-
-		if (exynos_crtc->ops->atomic_flush)
-			exynos_crtc->ops->atomic_flush(exynos_crtc,
-							exynos_plane);
-	}
+	if (exynos_crtc->ops->atomic_flush)
+		exynos_crtc->ops->atomic_flush(exynos_crtc);
 }
 
 static const struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index f0827dbebb7d..17b5ded72ff1 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -123,8 +123,8 @@ struct exynos_drm_plane_config {
  * @wait_for_vblank: wait for vblank interrupt to make sure that
  *	hardware overlay is updated.
  * @atomic_check: validate state
- * @atomic_begin: prepare a window to receive a update
- * @atomic_flush: mark the end of a window update
+ * @atomic_begin: prepare device to receive an update
+ * @atomic_flush: mark the end of device update
  * @update_plane: apply hardware specific overlay data to registers.
  * @disable_plane: disable hardware specific overlay.
  * @te_handler: trigger to transfer video image at the tearing effect
@@ -144,14 +144,12 @@ struct exynos_drm_crtc_ops {
 	void (*wait_for_vblank)(struct exynos_drm_crtc *crtc);
 	int (*atomic_check)(struct exynos_drm_crtc *crtc,
 			    struct drm_crtc_state *state);
-	void (*atomic_begin)(struct exynos_drm_crtc *crtc,
-			      struct exynos_drm_plane *plane);
+	void (*atomic_begin)(struct exynos_drm_crtc *crtc);
 	void (*update_plane)(struct exynos_drm_crtc *crtc,
 			     struct exynos_drm_plane *plane);
 	void (*disable_plane)(struct exynos_drm_crtc *crtc,
 			      struct exynos_drm_plane *plane);
-	void (*atomic_flush)(struct exynos_drm_crtc *crtc,
-			      struct exynos_drm_plane *plane);
+	void (*atomic_flush)(struct exynos_drm_crtc *crtc);
 	void (*te_handler)(struct exynos_drm_crtc *crtc);
 	void (*clock_enable)(struct exynos_drm_crtc *crtc, bool enable);
 };
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 6ae1b1e55783..70194d0e4fe4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -622,26 +622,28 @@ static void fimd_shadow_protect_win(struct fimd_context *ctx,
 	writel(val, ctx->regs + reg);
 }
 
-static void fimd_atomic_begin(struct exynos_drm_crtc *crtc,
-			       struct exynos_drm_plane *plane)
+static void fimd_atomic_begin(struct exynos_drm_crtc *crtc)
 {
 	struct fimd_context *ctx = crtc->ctx;
+	int i;
 
 	if (ctx->suspended)
 		return;
 
-	fimd_shadow_protect_win(ctx, plane->index, true);
+	for (i = 0; i < WINDOWS_NR; i++)
+		fimd_shadow_protect_win(ctx, i, true);
 }
 
-static void fimd_atomic_flush(struct exynos_drm_crtc *crtc,
-			       struct exynos_drm_plane *plane)
+static void fimd_atomic_flush(struct exynos_drm_crtc *crtc)
 {
 	struct fimd_context *ctx = crtc->ctx;
+	int i;
 
 	if (ctx->suspended)
 		return;
 
-	fimd_shadow_protect_win(ctx, plane->index, false);
+	for (i = 0; i < WINDOWS_NR; i++)
+		fimd_shadow_protect_win(ctx, i, false);
 }
 
 static void fimd_update_plane(struct exynos_drm_crtc *crtc,
-- 
cgit v1.2.3


From 3dbaab16c4cddbbb03ad7ed1a0285605a9cc4016 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Tue, 5 Jan 2016 13:52:52 +0100
Subject: drm/exynos: mixer: properly update all planes on the same vblank
 event

This patch also moves mixer_vsync_set_update() to newly introduced
mixer_atomic_begin/flush callbacks. This ensures that all mixer planes
will be updated on the same vsync event.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_mixer.c | 34 +++++++++++++++++++++++++---------
 1 file changed, 25 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index bf148dc3623c..b5fbc1cbf024 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -516,7 +516,6 @@ static void vp_video_buffer(struct mixer_context *ctx,
 	}
 
 	spin_lock_irqsave(&res->reg_slock, flags);
-	mixer_vsync_set_update(ctx, false);
 
 	/* interlace or progressive scan mode */
 	val = (ctx->interlace ? ~0 : 0);
@@ -567,7 +566,6 @@ static void vp_video_buffer(struct mixer_context *ctx,
 	mixer_cfg_vp_blend(ctx);
 	mixer_run(ctx);
 
-	mixer_vsync_set_update(ctx, true);
 	spin_unlock_irqrestore(&res->reg_slock, flags);
 
 	mixer_regs_dump(ctx);
@@ -642,7 +640,6 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
 		ctx->interlace = false;
 
 	spin_lock_irqsave(&res->reg_slock, flags);
-	mixer_vsync_set_update(ctx, false);
 
 	/* setup format */
 	mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
@@ -691,7 +688,6 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
 
 	mixer_run(ctx);
 
-	mixer_vsync_set_update(ctx, true);
 	spin_unlock_irqrestore(&res->reg_slock, flags);
 
 	mixer_regs_dump(ctx);
@@ -718,7 +714,6 @@ static void mixer_win_reset(struct mixer_context *ctx)
 	unsigned long flags;
 
 	spin_lock_irqsave(&res->reg_slock, flags);
-	mixer_vsync_set_update(ctx, false);
 
 	mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
 
@@ -749,7 +744,6 @@ static void mixer_win_reset(struct mixer_context *ctx)
 	if (ctx->vp_enabled)
 		mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
 
-	mixer_vsync_set_update(ctx, true);
 	spin_unlock_irqrestore(&res->reg_slock, flags);
 }
 
@@ -980,6 +974,16 @@ static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
 	mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
 }
 
+static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
+{
+	struct mixer_context *mixer_ctx = crtc->ctx;
+
+	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
+		return;
+
+	mixer_vsync_set_update(mixer_ctx, false);
+}
+
 static void mixer_update_plane(struct exynos_drm_crtc *crtc,
 			       struct exynos_drm_plane *plane)
 {
@@ -1009,12 +1013,18 @@ static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
 		return;
 
 	spin_lock_irqsave(&res->reg_slock, flags);
-	mixer_vsync_set_update(mixer_ctx, false);
-
 	mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
+	spin_unlock_irqrestore(&res->reg_slock, flags);
+}
+
+static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
+{
+	struct mixer_context *mixer_ctx = crtc->ctx;
+
+	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
+		return;
 
 	mixer_vsync_set_update(mixer_ctx, true);
-	spin_unlock_irqrestore(&res->reg_slock, flags);
 }
 
 static void mixer_wait_for_vblank(struct exynos_drm_crtc *crtc)
@@ -1055,6 +1065,8 @@ static void mixer_enable(struct exynos_drm_crtc *crtc)
 
 	pm_runtime_get_sync(ctx->dev);
 
+	mixer_vsync_set_update(ctx, false);
+
 	mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
 
 	if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
@@ -1063,6 +1075,8 @@ static void mixer_enable(struct exynos_drm_crtc *crtc)
 	}
 	mixer_win_reset(ctx);
 
+	mixer_vsync_set_update(ctx, true);
+
 	set_bit(MXR_BIT_POWERED, &ctx->flags);
 }
 
@@ -1113,8 +1127,10 @@ static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
 	.enable_vblank		= mixer_enable_vblank,
 	.disable_vblank		= mixer_disable_vblank,
 	.wait_for_vblank	= mixer_wait_for_vblank,
+	.atomic_begin		= mixer_atomic_begin,
 	.update_plane		= mixer_update_plane,
 	.disable_plane		= mixer_disable_plane,
+	.atomic_flush		= mixer_atomic_flush,
 	.atomic_check		= mixer_atomic_check,
 };
 
-- 
cgit v1.2.3


From d619894cf5c6a74a2e53a4701938dd4dd6736c60 Mon Sep 17 00:00:00 2001
From: Inki Dae <inki.dae@samsung.com>
Date: Thu, 24 Dec 2015 17:24:35 +0900
Subject: drm/exynos: crtc: do not wait for the scanout completion

This patch removes exynos_drm_crtc_complete_scanout function call
which makes sure for overlay data to be updated to real hardware
when drm driver is released.

With atomic modeset support, it doesn't need the funtion anymore
because atomic modeset interface makes sure that.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_crtc.c | 23 -----------------------
 drivers/gpu/drm/exynos/exynos_drm_crtc.h |  1 -
 drivers/gpu/drm/exynos/exynos_drm_fb.c   |  3 ---
 3 files changed, 27 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 5acaecba450a..cd9498164dc1 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -203,29 +203,6 @@ void exynos_drm_crtc_finish_update(struct exynos_drm_crtc *exynos_crtc,
 	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 }
 
-void exynos_drm_crtc_complete_scanout(struct drm_framebuffer *fb)
-{
-	struct exynos_drm_crtc *exynos_crtc;
-	struct drm_device *dev = fb->dev;
-	struct drm_crtc *crtc;
-
-	/*
-	 * make sure that overlay data are updated to real hardware
-	 * for all encoders.
-	 */
-	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-		exynos_crtc = to_exynos_crtc(crtc);
-
-		/*
-		 * wait for vblank interrupt
-		 * - this makes sure that overlay data are updated to
-		 *	real hardware.
-		 */
-		if (exynos_crtc->ops->wait_for_vblank)
-			exynos_crtc->ops->wait_for_vblank(exynos_crtc);
-	}
-}
-
 int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
 				       enum exynos_drm_output_type out_type)
 {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.h b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
index f9f365bd0257..6a581a8af465 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
@@ -28,7 +28,6 @@ void exynos_drm_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe);
 void exynos_drm_crtc_wait_pending_update(struct exynos_drm_crtc *exynos_crtc);
 void exynos_drm_crtc_finish_update(struct exynos_drm_crtc *exynos_crtc,
 				   struct exynos_drm_plane *exynos_plane);
-void exynos_drm_crtc_complete_scanout(struct drm_framebuffer *fb);
 
 /* This function gets pipe value to crtc device matched with out_type. */
 int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
index cbbb1a86e70a..d614194644c8 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
@@ -71,9 +71,6 @@ static void exynos_drm_fb_destroy(struct drm_framebuffer *fb)
 	struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
 	unsigned int i;
 
-	/* make sure that overlay data are updated before relesing fb. */
-	exynos_drm_crtc_complete_scanout(fb);
-
 	drm_framebuffer_cleanup(fb);
 
 	for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem); i++) {
-- 
cgit v1.2.3


From c74d8eb5649386c2cfcd65cc960fd283ba876877 Mon Sep 17 00:00:00 2001
From: Inki Dae <inki.dae@samsung.com>
Date: Tue, 5 Jan 2016 19:50:31 +0900
Subject: drm/exynos: fix kernel panic issue at drm releasing

This patch fixes a kernel panic issue which happened
when drm driver is closed while modetest.

This issue could be reproduced easily by launching modetest
with page flip repeatedly.

The reason is that invalid drm_file object could be accessed by
send_vblank_event function when finishing page flip if the drm_file
object was removed by drm_release and there was a pended page
flip event which was already committed to hardware.

So this patch makes the pended page flip event to be cancelled by
preclose callback which is called at front of drm_release function.

Changelog v2:
- free vblank event objects belonging to the request process,
  increment event space and decrease pending_update when cancelling
  the event

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
---
 drivers/gpu/drm/exynos/exynos_drm_crtc.c | 26 ++++++++++++++++++++++++++
 drivers/gpu/drm/exynos/exynos_drm_crtc.h |  4 ++++
 drivers/gpu/drm/exynos/exynos_drm_drv.c  |  5 +++++
 3 files changed, 35 insertions(+)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index cd9498164dc1..e36579c1c025 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -226,3 +226,29 @@ void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
 	if (exynos_crtc->ops->te_handler)
 		exynos_crtc->ops->te_handler(exynos_crtc);
 }
+
+void exynos_drm_crtc_cancel_page_flip(struct drm_crtc *crtc,
+					struct drm_file *file)
+{
+	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+	struct drm_pending_vblank_event *e;
+	unsigned long flags;
+
+	spin_lock_irqsave(&crtc->dev->event_lock, flags);
+	e = exynos_crtc->event;
+	if (e && e->base.file_priv == file) {
+		exynos_crtc->event = NULL;
+		/*
+		 * event will be destroyed by core part
+		 * so below line should be removed later with core changes
+		 */
+		e->base.destroy(&e->base);
+		/*
+		 * event_space will be increased by core part
+		 * so below line should be removed later with core changes.
+		 */
+		file->event_space += sizeof(e->event);
+		atomic_dec(&exynos_crtc->pending_update);
+	}
+	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
+}
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.h b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
index 6a581a8af465..cfdcf3e4eb1b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
@@ -40,4 +40,8 @@ int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
  */
 void exynos_drm_crtc_te_handler(struct drm_crtc *crtc);
 
+/* This function cancels a page flip request. */
+void exynos_drm_crtc_cancel_page_flip(struct drm_crtc *crtc,
+					struct drm_file *file);
+
 #endif
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 9756797a15a5..68f0f36f6e7e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -330,7 +330,12 @@ err_file_priv_free:
 static void exynos_drm_preclose(struct drm_device *dev,
 					struct drm_file *file)
 {
+	struct drm_crtc *crtc;
+
 	exynos_drm_subdrv_close(dev, file);
+
+	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+		exynos_drm_crtc_cancel_page_flip(crtc, file);
 }
 
 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
-- 
cgit v1.2.3