[PATCH REBASED 0/3] drm/exynos: add support for dynamic zpos in DECON and FIMD

[PATCH REBASED 0/3] drm/exynos: add support for dynamic zpos in DECON and FIMD

[Andrzej Hajda]

Hi Inki,

This small patchset adds dynamic zpos support for DECON and FIMD.
It was tested on tm2 and trats2.

The patchset is rebased on current exynos-drm-next.

Regards
Andrzej


Andrzej Hajda (3):
  drm/exynos/decon5433: add dynamic zpos support
  drm/exynos/fimd: create local helper for disabling hardware window
  drm/exynos/fimd: add dynamic zpos support

 drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 34 +++++-------
 drivers/gpu/drm/exynos/exynos_drm_fimd.c      | 54 ++++++++-----------
 2 files changed, 34 insertions(+), 54 deletions(-)

-- 
2.17.1

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[PATCH REBASED 1/3] drm/exynos/decon5433: add dynamic zpos support

[Andrzej Hajda]

DECON has fixed hardware window order. To implement dynamic zpos
normalized_zpos of active plane has to be connected to window number, and
remaining windows have to be disabled.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
 drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 34 +++++++------------
 1 file changed, 13 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
index 5b4e0e8b23bc..e0fda6da2ccb 100644
--- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
@@ -83,14 +83,6 @@ static const enum drm_plane_type decon_win_types[WINDOWS_NR] = {
 	[CURSON_WIN] = DRM_PLANE_TYPE_CURSOR,
 };
 
-static const unsigned int capabilities[WINDOWS_NR] = {
-	0,
-	EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
-	EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
-	EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
-	EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
-};
-
 static inline void decon_set_bits(struct decon_context *ctx, u32 reg, u32 mask,
 				  u32 val)
 {
@@ -402,7 +394,7 @@ 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->index;
+	unsigned int win = state->base.normalized_zpos + ctx->first_win;
 	unsigned int cpp = fb->format->cpp[0];
 	unsigned int pitch = fb->pitches[0];
 	dma_addr_t dma_addr = exynos_drm_fb_dma_addr(fb, 0);
@@ -452,19 +444,18 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
 	decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0);
 }
 
-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->index;
-
-	decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
-}
-
 static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
 {
 	struct decon_context *ctx = crtc->ctx;
 	unsigned long flags;
+	int win = hweight32(crtc->base.state->plane_mask) + ctx->first_win;
+
+	/* disable windows corresponding to disabled planes */
+	for (; win < WINDOWS_NR; ++win) {
+		if (!readl(ctx->addr + DECON_WINCONx(win)) & WINCONx_ENWIN_F)
+			break;
+		decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
+	}
 
 	spin_lock_irqsave(&ctx->vblank_lock, flags);
 
@@ -538,7 +529,7 @@ static void decon_disable(struct exynos_drm_crtc *crtc)
 	 * a destroyed buffer later.
 	 */
 	for (i = ctx->first_win; i < WINDOWS_NR; i++)
-		decon_disable_plane(crtc, &ctx->planes[i]);
+		decon_set_bits(ctx, DECON_WINCONx(i), WINCONx_ENWIN_F, 0);
 
 	decon_swreset(ctx);
 
@@ -607,7 +598,6 @@ static const struct exynos_drm_crtc_ops decon_crtc_ops = {
 	.disable_vblank		= decon_disable_vblank,
 	.atomic_begin		= decon_atomic_begin,
 	.update_plane		= decon_update_plane,
-	.disable_plane		= decon_disable_plane,
 	.mode_valid		= decon_mode_valid,
 	.atomic_flush		= decon_atomic_flush,
 };
@@ -628,7 +618,9 @@ static int decon_bind(struct device *dev, struct device *master, void *data)
 		ctx->configs[win].num_pixel_formats = ARRAY_SIZE(decon_formats);
 		ctx->configs[win].zpos = win - ctx->first_win;
 		ctx->configs[win].type = decon_win_types[win];
-		ctx->configs[win].capabilities = capabilities[win];
+		ctx->configs[win].capabilities = EXYNOS_DRM_PLANE_CAP_ZPOS
+					| EXYNOS_DRM_PLANE_CAP_WIN_BLEND
+					| EXYNOS_DRM_PLANE_CAP_PIX_BLEND;
 
 		ret = exynos_plane_init(drm_dev, &ctx->planes[win], win,
 					&ctx->configs[win]);
-- 
2.17.1

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[PATCH REBASED 2/3] drm/exynos/fimd: create local helper for disabling hardware window

[Andrzej Hajda]

Hardware window disabling is performed in multiple places. Creating
helper for it simplifies the code and prepares it for further improvements.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_fimd.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 786a8ee6f10f..a7993f5d8371 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -345,6 +345,14 @@ static void fimd_enable_shadow_channel_path(struct fimd_context *ctx,
 	writel(val, ctx->regs + SHADOWCON);
 }
 
+static void fimd_disable_win(struct fimd_context *ctx, int win)
+{
+	fimd_enable_video_output(ctx, win, false);
+
+	if (ctx->driver_data->has_shadowcon)
+		fimd_enable_shadow_channel_path(ctx, win, false);
+}
+
 static void fimd_clear_channels(struct exynos_drm_crtc *crtc)
 {
 	struct fimd_context *ctx = crtc->ctx;
@@ -363,12 +371,7 @@ static void fimd_clear_channels(struct exynos_drm_crtc *crtc)
 		u32 val = readl(ctx->regs + WINCON(win));
 
 		if (val & WINCONx_ENWIN) {
-			fimd_enable_video_output(ctx, win, false);
-
-			if (ctx->driver_data->has_shadowcon)
-				fimd_enable_shadow_channel_path(ctx, win,
-								false);
-
+			fimd_disable_win(ctx, win);
 			ch_enabled = 1;
 		}
 	}
@@ -880,15 +883,11 @@ 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->index;
 
 	if (ctx->suspended)
 		return;
 
-	fimd_enable_video_output(ctx, win, false);
-
-	if (ctx->driver_data->has_shadowcon)
-		fimd_enable_shadow_channel_path(ctx, win, false);
+	fimd_disable_win(ctx, plane->index);
 }
 
 static void fimd_enable(struct exynos_drm_crtc *crtc)
@@ -923,7 +922,7 @@ static void fimd_disable(struct exynos_drm_crtc *crtc)
 	 * a destroyed buffer later.
 	 */
 	for (i = 0; i < WINDOWS_NR; i++)
-		fimd_disable_plane(crtc, &ctx->planes[i]);
+		fimd_disable_win(ctx, i);
 
 	fimd_enable_vblank(crtc);
 	fimd_wait_for_vblank(crtc);
-- 
2.17.1

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[PATCH REBASED 3/3] drm/exynos/fimd: add dynamic zpos support

[Andrzej Hajda]

FIMD has fixed hardware window order. To implement dynamic zpos
normalized_zpos of active plane has to be connected to window number, and
remaining windows have to be disabled.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_fimd.c | 33 ++++++++----------------
 1 file changed, 11 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index a7993f5d8371..4d2bc32e26b6 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -228,14 +228,6 @@ static const uint32_t fimd_formats[] = {
 	DRM_FORMAT_ARGB8888,
 };
 
-static const unsigned int capabilities[WINDOWS_NR] = {
-	0,
-	EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
-	EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
-	EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
-	EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
-};
-
 static inline void fimd_set_bits(struct fimd_context *ctx, u32 reg, u32 mask,
 				 u32 val)
 {
@@ -781,6 +773,12 @@ static void fimd_atomic_flush(struct exynos_drm_crtc *crtc)
 	if (ctx->suspended)
 		return;
 
+	for (i = hweight32(crtc->base.state->plane_mask); i < WINDOWS_NR; i++) {
+		if (!(readl(ctx->regs + WINCON(i)) & WINCONx_ENWIN))
+			break;
+		fimd_disable_win(ctx, i);
+	}
+
 	for (i = 0; i < WINDOWS_NR; i++)
 		fimd_shadow_protect_win(ctx, i, false);
 
@@ -797,7 +795,7 @@ 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->index;
+	unsigned int win = state->base.normalized_zpos;
 	unsigned int cpp = fb->format->cpp[0];
 	unsigned int pitch = fb->pitches[0];
 
@@ -879,17 +877,6 @@ static void fimd_update_plane(struct exynos_drm_crtc *crtc,
 		atomic_set(&ctx->win_updated, 1);
 }
 
-static void fimd_disable_plane(struct exynos_drm_crtc *crtc,
-			       struct exynos_drm_plane *plane)
-{
-	struct fimd_context *ctx = crtc->ctx;
-
-	if (ctx->suspended)
-		return;
-
-	fimd_disable_win(ctx, plane->index);
-}
-
 static void fimd_enable(struct exynos_drm_crtc *crtc)
 {
 	struct fimd_context *ctx = crtc->ctx;
@@ -1008,7 +995,6 @@ static const struct exynos_drm_crtc_ops fimd_crtc_ops = {
 	.disable_vblank = fimd_disable_vblank,
 	.atomic_begin = fimd_atomic_begin,
 	.update_plane = fimd_update_plane,
-	.disable_plane = fimd_disable_plane,
 	.atomic_flush = fimd_atomic_flush,
 	.atomic_check = fimd_atomic_check,
 	.te_handler = fimd_te_handler,
@@ -1062,7 +1048,10 @@ 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];
-		ctx->configs[i].capabilities = capabilities[i];
+		ctx->configs[i].capabilities = EXYNOS_DRM_PLANE_CAP_ZPOS
+					     | EXYNOS_DRM_PLANE_CAP_WIN_BLEND
+					     | EXYNOS_DRM_PLANE_CAP_PIX_BLEND;
+
 		ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
 					&ctx->configs[i]);
 		if (ret)
-- 
2.17.1

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